Insights.
Selected Scientific Publications.

March 2026

Review ǀ Open Access ǀ ǀ Recovery, Athletic Performance

The Ergogenic Potential of Succinic Acid in Recursive Performance and Post-Exercise Recovery: A Systematic Review

(https://doi.org/10.3390/nu18050870) Karol Jędrejko, Oliver Catlin, Maciej Jedrejko, Bozena Muszynska, Izabela Bat, Susan M. Kleiner, Dominika Granda, Andrzej Pokrywka, Ralf Jäger. Nutrients. 2026, 18(5), 870

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February 2026

Research Article ǀ Open Access ǀ ǀ Liposome, Bioavailability, Berberine

Enhancing Berberine Absorption through Liposomal Delivery: A Pilot, Double-Blind, Cross-Over, Randomized Study.

(https://doi.org/10.2147/NDS.S582434) Martin Purpura, Ralf Jäger, Ashok Godavarthi, Halil İbrahim Ceylan, Ambrish Chandrappa, Grant M. Tinsley J Diet Suppl 2026, 18:1-13.

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February 2026

Review ǀ Open Access ǀ ǀ Probiotics, Enumeration, Bacteria

Revisiting Strategies for Bacterial Enumeration: The Case for Viable but Nonculturable (VBNC) Cells in Supplement Products.

(https://doi.org/10.1007/s12602-026-10936-9) Trevor Kirby, Jeremy R. Townsend, Erick Walts, Ren-Hau Lai, Lara Nyman, Ralph Esposito, P. Sapp, C. Edwards, Anthony Kiefer, Julie Zhu, Molly Cormier, Darshan Pathak, Connie Wong, Javier Ochoa-Reparaz, Andrea Castillo, Ralf Jäger. Probiotics Antimicrob Proteins 2026.

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January 2026

Research Article ǀ Open Access ǀ ǀ Antibiotics, Synbiotics, Urolithin A

Multi-Species Synbiotic Supplementation After Antibiotics Restores Microbial Diversity and Function, and Increases Gut Barrier Integrity: A Randomized, Placebo-Controlled Trial.

(https://doi.org/10.3390/antibiotics15020138) Brooke A. Napier, Jessica R. Allegretti, Paul Feuerstadt, Colleen R. Kelly, Nicholas W. Van Hise, Ralf Jäger, Gerrit A. Stuivenberg, Zain Kassam, Gregor Reid. Antibiotics 2026, 15(2), 138.

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January 2026

Research Article ǀ Open Access ǀ ǀ Tart Cherry, Exercise Recovery, Performance

Impact of Powdered Tart Cherry Supplementation on Performance Recovery Following Repeated Sprint Exercise.

(https://doi.org/10.3390/nu18030443) Anthony M. Hagele, Kyle S. Levers, Kevin F. Holley, Alex C. Schrautenmeier, Joesi M. Krieger, Joshua M. Iannotti, Connor J. Gaige, Ralf Jäger, Chad M. Kerksick. Nutrients. 2026, 18(3):443.

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January 2026

Research Article ǀ Open Access ǀ ǀ Synbiotics, Bloating, Decentralized Trial

A Randomized, Placebo-Controlled Trial Evaluating Multi-Species Synbiotic Supplementation for Bloating, Gas, and Abdominal Discomfort.

(https://doi.org/10.3390/nu18020255) Jessica R. Allegretti, Zain Kassam, Colleen R. Kelly, Ari Grinspan, Najwa El-Nachef, Ralf Jäger, Courtney Van Den Elzen, Ralf Jäger, Paul Feuerstadt. Nutrients. 2026, 18(2):225.

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November 2025

Research Article ǀ Open Access ǀ ǀ Tart Cherry, Urate, Inflammation

Effects of Tart Cherry Extract Supplementation on Plasma Urate and C-Reactive Protein Levels in Healthy Adults: a Randomized Controlled Trial

(https://doi.org/10.1080/19390211.2025.2589787) Ralf Jäger, Martin Purpura, Sebastian T. Balcombe, Ashok Godavarthi, Suda A. Reddy, Ecaterina Vasenina, Grant M. Tinsley J Diet Suppl 2026, 23(1):42-57.

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October 2025

Review ǀ Open Access ǀ ǀ Soccer, Performance, Professional Athletes

From Science to Dressing Room: Dietary Supplements for Elite Soccer Performance.

(https://doi.org/10.3390/jfmk10040408) Tindaro Bongiovanni, Federico Genovesi, Christopher Carling, Gianpiero Greco, Ralf Jäger J Funct Morphol Kinesiol. 2025, 10(4):408.

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September 2025

Research Article ǀ Open Access ǀ ǀ Liposome, Bioavailability, Coenzyme Q10

Impact of Liposomal Delivery on Coenzyme Q10 Absorption: A Double-Blind, Placebo-Controlled, Randomized Trial.

(https://doi.org/10.3389/fnut.2025.1605033) Ralf Jäger, Martin Purpura, Ashok Godavarthi, Halil İbrahim Ceylan, Sebastian T. Balcombe, Ambrish Chandrappa, Grant M. Tinsley Front. Nutr. 2025, 12:1605033.

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August 2025

Research Article ǀ Open Access ǀ ǀ Synbiotic, SCFA, Urolithin A

Multi-Species Synbiotic Supplementation Enhances Gut Microbial Diversity, Increases Urolithin-A and Butyrate Production, and Reduces Inflammation in Healthy Adults: A Randomized, Placebo-Controlled Trial.

(https://doi.org/10.3390/nu17172734) Brooke A. Napier, Jessica R. Allegretti, Paul Feuerstadt, Colleen R. Kelly, Nicholas W. Van Hise, Ralf Jäger, Zain Kassam, Gregor Reid. Nutrients 2025, 17(17), 2734.

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July 2025

Research Article ǀ Open Access ǀ ǀ Joint Health, Ginger, Inflammation

Effects of Ginger Supplementation on Markers of Inflammation and Functional Capacity in Individuals with Mild to Moderate Joint Pain

(https://doi.org/10.3390/nu17142365) Jacob Broeckel, Landry Estes, Megan Leonard, Broderick L. Dickerson, Drew E. Gonzalez, Martin Purpura, Ralf Jäger, Ryan J. Swinski, Christopher J. Rasmussen, Richard B. Kreider Nutrients 2025, 17(14), 2365

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July 2025

Research Article ǀ Open Access ǀ ǀ Probiotic, Omega-3, Athletic Performance

Synergistic Effects of Probiotic and Omega-3 Supplementation with Ultra-Short Race Pace Training on Sprint Swimming Performance.

(https://doi.org/10.3390/nu17142296) Ideh Maymandinejad, Mohammad Hemmatinafar, Ralf Jäger, Babak Imanian, Maryam Koushkie Jahromi, Katsuhiko Suzuki Nutrients 2025, 17(14), 2296

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March 2025

Research Article ǀ Open Access ǀ ǀ Bioavailability, Iron, Fermentation

Glycoprotein matrix-bound iron improves absorption vs. ferrous bisglycinate chelate and ferrous fumarate iron: A Randomized Crossover Trial

(https://doi.org/10.7759/cureus.80224) Ariane H. Secrest, Charlene N. Radler, Jaci Kelly, Nikolas Keratsopoulos, Alyssa Faterkowski, Katelyn Kolodziejczyk, Mathis Rollin, Robert Mills, Mandy E. Parra, Ralf Jäger, Martin. Purpura, Grant M. Tinsley, Lem W. Taylor. Cureus 2025, 17(3), e80224

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February 2025

Research Article ǀ Open Access ǀ ǀ Protein Absorption, Postbiotic, Plant Protein

Postbiotic supplementation increases amino acid absorption from plant-based meal: A placebo-controlled, randomized, double-blind, crossover study.

(https://doi.org/10.1007/s12602-020-09656-5) Christine M. Florez, Javier Zaragoza, Jessica Prather, Mandy Parra, Jaci Davis, Arnie Vargas, Audrey Ross, Ralf Jäger, Martin Purpura, Simone Guglielmetti, Grant M. Tinsley, Lem W. Taylor. Probiotics Antimicrob Proteins 2025, 17(5):3641-3655.

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January 2025

Position Stand ǀ Open Access ǀ ǀ Protein Absorption, Postbiotic, Plant Protein

International Society of Sports Nutrition Position Stand: Long-Chain Omega-3 Polyunsaturated Fatty Acids.

(https://doi.org/10.1080/15502783.2024.2441775) Ralf Jäger, Jeffrey L. Heileson, Sidney Abou Sawan, Broderick Dickerson, Megan Leonard, Richard B. Kreider, Chad M. Kerksick, Stephen M. Cornish, Darren G. Candow, Dean M. Cordingley, Scott C. Forbes, Grant M. Tinsley, Tindaro Bongiovanni, Bill I. Campbell, Shawn M. Arent, Jeffrey R. Stout, Douglas S. Kalman, Jose Antonio. J Int Soc Sports Nutr. 2025, 21(1):2441775.

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January 2025

Research Article ǀ Open Access ǀ ǀ Methylxanthine, Caffeine, Cognition

1-Methyxanthine Enhances Memory and Neurotransmitter Levels.

(https://doi.org/10.1371/journal.pone.0313486) Ralf Jäger, Sidney Abou Sawan, Marco Orrú, Grant M. Tinsley, Martin Purpura, Shawn D. Wells, Kylin Liao, Ashok Godavarthi PLoS One 2025, 20(1):e0313486.

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January 2025

Research Article ǀ Open Access ǀ ǀ Soccer, Probiotics, Sleep

A Lactobacillus consortium provides insights into the sleep-exercise-microbiome nexus in proof-of-concept studies of elite athletes and in the general population.

(https://link.springer.com/article/10.1186/s40168-024-01936-4) Tindaro Bongiovanni, Marina Santiago, Kinga Zielinska, Jonathan Scheiman, Carolina Barsa, Ralf Jäger, Daniela Pinto, Fabio Rinaldi, Giammaria Giuliani, Tullio Senatore, Aleksandar D. Kostic Microbiome 2025, 13(1):1

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December 2024

Position Stand ǀ Open Access ǀ ǀ Muscle Breakdown, HMB, Athletic Performance

International Society of Sports Nutrition position stand: β-Hydroxy-β-Methylbutyrate (HMB).

(https://doi.org/10.1080/15502783.2024.2434734) John A. Rathmacher, Lisa M. Picthford, Jeffrey R. Stout, Jeremy R. Townsend, Ralf Jäger, Richard B. Kreider, Chad M. Kerksick, Patrick S. Harty, Darren G. Candow, Brandon M. Roberts, Shawn M. Arent, Douglas S. Kalman, Jose Antonio. J Int Soc Sports Nutr. 2025, 21(1):2434734.

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December 2024

Research Article ǀ Open Access ǀ ǀ Dipeptides, Strength, Resistance Training

Dileucine ingestion, but not leucine, increases lower body strength and performance following resistance training: A double-blind, randomized, placebo-controlled trial.

(https://doi.org/10.1371/journal.pone.0312997) Anthony M. Hagele, Joesi M. Krieger, Connor J. Gaige, Kevin F. Holley, Kristen N. Gross, Joshua M. Iannotti, Leah E. Allen, Paige J. Sutton, Logan S. Orr, Petey W. Mumford, Martin Purpura, Ralf Jäger, Chad M. Kerksick PLoS One 2024, 19(12):e0312997.

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December 2024

Research Article ǀ Open Access ǀ ǀ Caffeine, Paraxanthine, Mental Flexibility

Paraxanthine Enhances Memory and Neuroplasticity More Than Caffeine in Rats.

(https://www.springermedicine.com/paraxanthine-enhances-memory-and-neuroplasticity-more-than-caffe/50266154) Ralf Jäger, Sidney Abou Sawan, Marco Orru, Grant M. Tinsley, Martin Purpura, Shawn D. Wells, Kylin Liao, Ashok Godavarthi. Exp. Brain Res. 2024, 243(1):8.

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December 2024

Research Article ǀ Open Access ǀ ǀ Liposome, Bioavailability, Vitamin C

Liposomal delivery enhances absorption of vitamin C into plasma and leukocytes: A Double-Blind, Placebo-Controlled, Randomized Trial.

(https://link.springer.com/article/10.1007/s00394-024-03487-8) Martin Purpura, Ralf Jäger, Ashok Godavarthi, Dhananjaya Bhaskarachar, Grant M. Tinsley Eur J Nutr. 2024, 63(8):3037-3046.

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July 2024

Research Article ǀ Open Access ǀ ǀ Ashwagandha, Cognition, Mood

Body composition and dietary intake profiles of elite Iranian swimmers and water polo athletes.

(https://doi.org/10.3390/nu16152393) Mohammad Hossein Samanipour, Shahzad Mohammadian, Juan Del Coso, Omid Salehian, Fatemeh Khodakhah Jeddi, Mehdi Khosravi, José M. González-Ravé, Halil İbrahim Ceylan, Hongyou Liu, Sidney Abou Sawan, Ralf Jäger Nutrients 2024, 16, 1813.

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June 2024

Research Article ǀ Open Access ǀ ǀ Ashwagandha, Cognition, Mood

Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.

(https://doi.org/10.3390/nu16121813) Megan Leonard, Broderick Dickerson, Landry Estes, Drew E. Gonzalez, Victoria Jenkins, Sarah Johnson, Dante Xing, Choongsung Yoo, Joungbo Ko, Martin Purpura, Ralf Jäger, Mark Faries, Wesley Kephart, Ryan Sowinski, Christopher J. Rasmussen, Richard B. Kreider Nutrients 2024, 16, 2393.

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June 2024

Research Article ǀ Open Access ǀ ǀ Weight Management, Phase 2, Fat Loss

Proprietary alpha-amylase inhibitor formulation from white kidney bean (Phaseolus vulgaris L.) promotes weight and fat loss: a 12-week, double-blind, placebo-controlled, randomized trial.

(https://doi.org/10.1038/s41598-024-63443-8) Ralf Jäger, Sidney Abou Sawan, Martin Purpura, Barbara Grube, Yvette Röske, Patricia De Costa, Pee-Win Chong. Sci Rep 2024, 14, 12685.

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May 2024

Research Article ǀ Open Access ǀ ǀ Weight Management, Phase 2, Fat Loss

A Dose-Response Study to Examine Paraxanthine's Impact on Energy Expenditure, Hunger, Appetite, and Lipolysis.

(https://doi.org/10.1080/19390211.2024.2351222) Kristen N. Gross, Leah E. Allen, Anthony M. Hagele, Joesi M. Krieger, Paige J. Sutton, Esther Duncan, Petey W. Mumford, Ralf Jäger, Martin Purpura, Chad M. Kerksick. J. Diet Suppl. 2024, 14:1-25.

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May 2024

Research Article ǀ Open Access ǀ ǀ Caffeine, Paraxanthine, Mental Errors

Paraxanthine provides greater improvement in cognitive function than caffeine following after performing a 10-km run.

(https://www.tandfonline.com/doi/full/10.1080/15502783.2024.2352779) Choongsung Yoo, Dante Xing, Drew E Gonzalez, Victoria Jenkins, Kay Nottingham, Broderick Dickerson, Megan Leonard, Joungbo Ko, Megan H. Lewis, Mark Faries, Wesley Kephart, Martin Purpura, Ralf Jäger, Shawn D Wells, Kylin Liao, Ryan Sowinski, Christopher J Rasmussen, Richard B Kreider J Int Soc Sports Nutr. 2024, 21(1):2352779.

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March 2024

Research Article ǀ Open Access ǀ ǀ Zinc, Bioavailability, Fermentation

Glycoprotein Matrix Zinc Exhibits Improved Absorption: A Randomized Crossover Trial.

(https://doi.org/10.3390/nu16071012) Ralf Jäger, Martin Purpura, Jaci Davis, Nikolas Keratsopoulos, Mandy E. Parra, Ariane H. Secrest, Grant M. Tinsley, Lem Taylor Nutrients 2024, 16(7), 1012.

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March 2024

Research Article ǀ Open Access ǀ ǀ Weight Management, Algae, Women

Effects of Supplementation with Microalgae Extract from Phaeodactylum tricornutum (Mi136) to Support Benefits from a Weight Management Intervention in Overweight Women.

(https://doi.org/10.3390/nu16070990) Broderick Dickerson, Jonathan Maury, Victoria Jenkins, Kay Nottingham, Dante Xing, Drew E. Gonzalez, Megan Leonard, Jacob Kendra, Joungbo Ko, Choongsung Yoo, Sarah Johnson, Rémi Pradelles, Martin Purpura, Ralf Jäger, Ryan Sowinski, Christopher J. Rasmussen, Richard B. Kreider Nutrients 2024, 16(7), 990.

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February 2024

Review ǀ Open Access ǀ ǀ Postbiotic, Sports Performance, Recovery

It’s Dead! Can Postbiotics Really Help Performance and Recovery? A Systematic Review

(https://doi.org/10.3390/nu16050720) Chad M. Kerksick, Ralf Jäger, Jessica Moon Nutrients 2024, 16(5), 720.

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December 2022

Research Article ǀ Open Access ǀ ǀ Protein, Probiotics, Amino Acids, Absorption

Probiotic BC30 Improves Amino Acid Absorption from Plant Protein Concentrate in Older Women

(https://link.springer.com/article/10.1007/s12602-022-10028-4) Kylie E. Walden, Anthony M. Hagele, Logan S. Orr, Kristen N. Gross, Joesi M. Krieger, Ralf Jäger, Chad M. Kerksick Probiotics & Antimicro. Prot. 2022, 16(1):125-137.

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December 2022

Research Article ǀ Non-Open Access ǀ ǀ Amino Acids, Muscle Protein Synthesis, Anabolism

Leucine ingestion promotes mTOR translocation to the periphery and enhances total and peripheral RPS6 phosphorylation in human skeletal muscle

(https://link.springer.com/article/10.1007/s00726-022-03221-w) Maksym N. H. Holowaty, Matthew J. Lees, Sidney Abou Sawan, Kevin J. M. Paulussen, Ralf Jäger, Martin Purpura, Scott A. Paluska, Nicholas A. Burd, Nathan Hodson & Daniel R. Moore Amino Acids 2022, 55(2):253-261.

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September 2022

Research Article ǀ Open Access ǀ ǀ Nootropic, Cognition, Memory

Effects of Acute Ashwagandha Ingestion on Cognitive Function

(https://www.mdpi.com/1660-4601/19/19/11852) Dante Xing, Choongsung Yoo, Drew Gonzalez, Victoria Jenkins, Kay Nottingham, Broderick Dickerson, Megan Leonard, Joungbo Ko, Mark Faries, Wesley Kephart, Martin Purpura, Ralf Jäger, Ryan Sowinski, Christopher J Rasmussen, Richard B Kreider Int J Environ Res Public Health  2022, 19(19):11852.

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August 2022

Research Article ǀ Open Access ǀ ǀ Probiotics, Anti-inflammatory, Immunity

In vitro assessment of the probiotic properties of an industrial preparation containing Lacticaseibacillus paracasei in the context of athlete health

(https://www.frontiersin.org/articles/10.3389/fphar.2022.857987/full) Helton Pereira Dos Santos Nunes DE Moura, Jason Michael Cholewa, Ralf Jäger, Eduardo Zapaterra Campos, Bruno Viana Rosa, Flávio Antônio DE Sousa Nunes, Clara Andressa DE Araújo Barros, Priscila Almeida Queiroz Rossi, Jose Gerosa-Neto, Nelo Eidy Zanchi, Fabrício Eduardo Rossi Front Pharmacol. 2022, 13:857987.

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July 2022

Research Article ǀ Open Access ǀ ǀ Capsaicin, Sports Nutrition, Muscle Health

Acute Low-Dose Capsiate Supplementation Improves Upper Body Resistance Exercise Performance in Trained Men: A Randomized, Crossover and Double-Blind Study

(https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9458288/) Helton Pereira dos Santos Nunes de Moura, Jason Michael Cholewa, Ralf Jäger, Eduardo Zapaterra Campos, Bruno Viana Rosa, Flavio Antonio de Sousa Nunes, Clara Andressa de Araujo Barros, Priscila Almeida Queiroz Rossi, Jose Gerosa-Neto, Nelo Eidy Zanchi, Fabrício Eduardo Rossi Int J Exerc Sci.  2021, 15(2):1007-1018.

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July 2022

Research Article ǀ Open Access ǀ ǀ Joint Health, Hops

Effects of Standardized Hops (Humulus lupulus L.) Extract on Joint Health: A Randomized, Placebo-Controlled, Double-Blind, Multiple Dose Study

(https://austinpublishinggroup.com/nutrition-metabolism/fulltext/ajnm-v9-id1124.pdf) Ralf Jäger, Brett Bernier, Jason Theodosakis, Gregory Bonfilio, Chad M. Kerksick, Martin Purpura Austin J Nutr Metab. 2022, 9(2):1124.

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July 2022

Research Article ǀ Open Access ǀ ǀ Sports Nutrition, Exercise, Performance

Acute Low-Dose Capsiate Supplementation Improves Upper Body Resistance Exercise Performance in Trained Men: A Randomized, Crossover and Double- Blind Study

(https://digitalcommons.wku.edu/ijes/vol15/iss2/12/) Helton Pereira dos Santos Nunes de Moura, Jason Michael Cholewa, Ralf Jäger, Eduardo Zapaterra Campos, Bruno Viana Rosa, Flavio Antonio de Sousa Nunes, Clara Andressa de Araujo Barros, Priscila Almeida Queiroz Rossi, Jose Gerosa-Neto, Nelo Eidy Zanchi, Fabricio Eduardo Rossi Int J Exerc Sci  2022, 15(2): 1007-1018.

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February 2022

Review Article ǀ Open Access ǀ ǀ Sports Nutrition, Creatine

Bioavailability, Efficacy, Safety and Regulatory Status of Creatine and Related Compounds: A Critical Review

(https://www.mdpi.com/2072-6643/14/5/1035) Richard B Kreider, Ralf Jäger, Martin Purpura Nutrients  2022, 15(2): 13(5):1035.

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February 2022

Research Article ǀ Open Access ǀ ǀ Paraxanthine, Sports Nutrition, Muscle Health

Paraxanthine Supplementation Increases Muscle Mass, Strength, and Endurance in Mice

(https://www.mdpi.com/2072-6643/14/4/893) Ralf Jäger, Martin Purpura, Shawn D. Wells, Kylin Liao, Ashok Godavarthi Nutrients  2022, 14(4):893.

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December 2021

Research Article ǀ Open Access ǀ ǀ Paraxanthine, Cognition, Brain Health

Dose-Response of Paraxanthine on Cognitive Function: A Double Blind, Placebo Controlled, Crossover Trial

(https://www.mdpi.com/2072-6643/13/12/4478) Dante Xing, Choongsung Yoo, Drew Gonzalez, Victoria Jenkins, Kay Nottingham, Broderick Dickerson, Megan Leonard, Joungbo Ko, Mark Faries, Wesley Kephart, Martin Purpura, Ralf Jäger, Shawn D. Wells, Ryan Sowinski, Christopher J. Rasmussen, Richard B. Kreider Nutrients  2021, 13(12):4478.

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December 2021

Research Article ǀ Open Access ǀ ǀ Capsaicin, Sports Nutrition, Muscle Health

Chronic capsiate supplementation increases fat-free mass and upper body strength but not the inflammatory response to resistance exercise in young untrained men: a randomized, placebo-controlled and double-blind study

(https://www.tandfonline.com/doi/full/10.1186/s12970-021-00446-0) Vilton Emanoel Lopes de Moura e Silva, Jason Michael Cholewa, Ralf Jäger, Nelo Eidy Zanchi, Marcelo Conrado de Freitas, Rayane Carvalho de Moura, Esmeralda Maria Lustosa Barros, Barbara Moura Antunes, Erico Chagas Caperut , Sergio Luiz Galan Ribeiro, Fabio Santos Lira, Marcos Antônio Pereira dos Santos, Fabrício Eduardo Rossi J Int Soc Sports Nutr  2021, 18:50.

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November 2021

Research Article ǀ Open Access ǀ ǀ ATP, Performance, Muscle Health

Dose Response of Acute ATP Supplementation on Strength Training Performance

(https://www.frontiersin.org/articles/10.3389/fspor.2021.780459/full) Helton Pereira dos Santos Nunes de Moura, Ralf Jäger, Martin Purpura, John A. Rathmacher, John C. Fuller Jr, Fabrício Eduardo Rossi Front. Sports Act. Living 2021, 3:780459.

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November 2021

Research Article ǀ Open Access ǀ ǀ Paraxanthine, Cognition, Brain Health

Acute Paraxanthine Ingestion Improves Cognition and Short-Term Memory and Helps Sustain Attention in a Double-Blind, Placebo-Controlled, Crossover Trial

(https://www.mdpi.com/2072-6643/13/11/3980) Martin Purpura, Ralf Jäger, Michael Falk Nutrients 2021, 13(11):3980.

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September 2021

Research Article ǀ Open Access ǀ ǀ Paraxanthine, Toxicity, Safety

An assessment of mutagenicity, genotoxicity, acute-, subacute and subchronic oral toxicity of paraxanthine (1,7-dimethylxanthine)

(https://www.sciencedirect.com/science/article/abs/pii/S0278691521006128) Choongsung Yoo, Dante Xing, Drew Gonzalez, Victoria Jenkins, Kay Nottingham, Broderick Dickerson, Megan Leonard, Joungbo Ko, Mark Faries, Wesley Kephart, Martin Purpura, Ralf Jäger, Shawn D. Wells, Ryan Sowinski, Christopher J. Rasmussen, Richard B. Kreider Food Chem Tox 2021, 158:112579.

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September 2021

Research Article ǀ Open Access ǀ ǀ Paraxanthine, Toxicity, Safety

An assessment of mutagenicity, genotoxicity, acute-, subacute and subchronic oral toxicity of paraxanthine (1,7-dimethylxanthine)

(https://www.sciencedirect.com/science/article/abs/pii/S0278691521006128) Choongsung Yoo, Dante Xing, Drew Gonzalez, Victoria Jenkins, Kay Nottingham, Broderick Dickerson, Megan Leonard, Joungbo Ko, Mark Faries, Wesley Kephart, Martin Purpura, Ralf Jäger, Shawn D. Wells, Ryan Sowinski, Christopher J. Rasmussen, Richard B. Kreider Food Chem Tox 2021, 158:112579.

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July 2021

Research Article ǀ Open Access ǀ ǀ Muscle Protein Synthesis, Muscle Health, Dipeptide

Dileucine ingestion is more effective than leucine in stimulating muscle protein turnover in young males: a double blind randomized controlled trial

(https://journals.physiology.org/doi/full/10.1152/japplphysiol.00295.2021) Kevin J.M. Paulussen, Rafael A. Alamilla, Amadeo F. Salvador, Colleen F. McKenna, Andrew T. Askow, Hsin-Yu Fang, Zhong Li, Alexander V. Ulanov, Scott A. Paluska, John A. Rathmacher, Ralf Jäger, Martin Purpura, Nicholas A. Burd J Appl Physiol 2021, 131: 1111–1122.

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June 2021

Review Article ǀ Open Access ǀ ǀ Sports Nutrition, Plant Protein, Body Composition

Plant Proteins and Exercise: What Role Can Plant Proteins Have in Promoting Adaptations to Exercise?

(https://www.mdpi.com/2072-6643/13/6/1962) Chad M. Kerksick, Andrew Jagim, Anthony Hagele, Ralf Jäger, Nutrients 2021, 13(6):1962.

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June 2021

Research Article ǀ Open Access ǀ ǀ Gut Health, Glucosamine, Prebiotic

Impact of Glucosamine Supplementation on Gut Health

(https://www.mdpi.com/2072-6643/13/7/2180) Jessica M, Moon, Peter Finnegan, Richard A. Stecker, Hanna Lee, Kayla M. Ratliff, Ralf Jäger, Martin Purpura, Carolyn M. Slupsky, Maria L. Marco, Craig J. Wissent, Jason Theodosakis, Chad M. Kerksick Nutrients 2021, 13(7):2180.

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June 2021

Review Article ǀ Open Access ǀ ǀ Sports Nutrition, Muscle Health, Body Composition

Chronic capsiate supplementation increases fat-free mass and upper body strength but not the inflammatory response to resistance exercise in young untrained men: a randomized, placebo-controlled and double-blind study

(https://jissn.biomedcentral.com/articles/10.1186/s12970-021-00446-0) Vilton Emanoel Lopes de Moura e Silva, Jason Michael Cholewa, Ralf Jäger, Nelo Eidy Zanchi, Marcelo Conrado de Freitas, Rayane Carvalho de Moura, Esmeralda Maria Lustosa Barros, Barbara Moura Antunes, Erico Chagas Caperuto, Sergio Luiz Galan Ribeiro, Fabio Santos Lira, Marcos Antônio Pereira dos Santos and Fabrício Eduardo Rossi J Int Soc Sports Nutr 2021, 18:50.

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June 2021

Review ǀ Open Access ǀ ǀ Traumatic Brain Injury, Creatine, Endurance

Effects of creatine intake on brain damage and endurance performance

(https://sndj-web.jp/news/001373.php) Ralf Jäger, Martin Purpura, Scott C. Forbes, Toshitada Inoue Sports Nutrition and Dietitians Japan (SNDJ) 2021

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May 2021

Abstract ǀ Open Access ǀ ǀ Cognition, RAD, EB2021

The effect of phosphatidylserine administration on cognition and symptoms of reactive attachment disorder - a randomized, double-blind, placebo-controlled clinical trial in adolescents

(https://faseb.onlinelibrary.wiley.com/doi/10.1096/fasebj.2021.35.S1.00180) Ralf Jäger, Martin Purpura, Takuma Hirayama, Toshitada Inoue, Yasuhisa Tatsumi, Keno Ishihara FASEB J 2021, 35(S1):180.

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May 2021

Abstract ǀ Open Access ǀ ǀ Joint Health, Collagen, EB2021

The effects of lemon verbena extract and hydrolyzed collagen supplementation, either alone or in combination, on subjects with mild arthritis of the knee joints

(https://faseb.onlinelibrary.wiley.com/doi/10.1096/fasebj.2021.35.S1.03579) Martin Purpura, Ralf Jäger, Karim Balan FASEB J 2021, 35(S1):3579.

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May 2021

Review ǀ Open Access ǀ ǀ Brain Health, Creatine

Improvement of mental performance by ingestion of creatine

(https://sndj-web.jp/news/001348.php) Ralf Jäger, Martin Purpura, Scott C. Forbes, Toshitada Inoue Sports Nutrition and Dietitians Japan (SNDJ) 2021

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January 2021

Review Article ǀ Open Access ǀ ǀ Chili Pepper, Sports Nutrition

Capsaicinoid and Capsinoids as an Ergogenic Aid: A Systematic Review and the Potential Mechanisms Involved

(https://journals.humankinetics.com/view/journals/ijspp/aop/article-10.1123-ijspp.2020-0677/article-10.1123-ijspp.2020-0677.xml) Vilton E.L. de Moura E Silva, Jason M. Cholewa, Francois Bilaut , Ralf Jäger, Marcela C. de Freitas, Fabio S. Lira, Fabricio E. Rossi Int J Sports Physiol Perform. 2021, 16, 464-473

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January 2021

Review Article ǀ Open Access ǀ|Sports Nutrition, Energy, Muscle Health

Health and ergogenic potential of oral adenosine-5′-triphosphate (ATP) supplementation.

(www.sciencedirect.com/science/article/pii/S1756464621000062) Ralf Jäger, Martin Purpura, John A. Rathmacher, John C. Fuller Jr., Lisa M. Pitchford, Fabricio E. Rossi, Chad M. Kerksick. J Funct Foods 2021, 78:104357.

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December 2020

Research Article ǀ Open Access ǀ ǀ Plant Protein, Sports Nutrition, Resistance Exercise

Effects of daily 24-gram doses of rice or whey protein on resistance training adaptations in trained males

(https://jissn.biomedcentral.com/articles/10.1186/s12970-020-00394-1) Jessica M. Moon, Kayla M. Ratliff, Julia C. Blumkaitis, Patrick S. Harty, Hannah A. Zabriskie, Richard A. Stecker, Brad S. Currier, Andrew R. Jagim, Ralf Jäger, Martin Purpura, Chad M. Kerksick J Int Soc Sports Nutr. 2020, 17(1):60.

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November 2020

Poster Presentation ǀ Open Access ǀ Cognition, Ashwagandha

Acute ashwagandha supplementation improves cognitive function

(https://jissn.biomedcentral.com/articles/10.1186/s12970-020-00382-5#Sec37) Dante Xing, Choongsung Yoo, Christopher J. Rasmussen, Martin Purpura, Ralf Jäger, Richard B. Kreider J Int Soc Sports Nutr. 2020, 17(1):59.

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October 2020

Research Article ǀ Open Access ǀ Protein, Probiotics, Amino Acids

Bacillus coagulans GBI-30, 6086 improves amino acid absorption from milk protein

(https://nutritionandmetabolism.biomedcentral.com/articles/10.1186/s12986-020-00515-2) Richard A. Stecker, Jessica M. Moon, Travis J. Russo, Kayla M. Ratliff, Petey W. Mumford, Ralf Jäger, Martin Purpura, Chad M. Kerksick Nutr Metab (Lond) 2020, 17:93.

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August 2020

Review ǀ Open Access ǀ Sports Nutrition, Probiotics, Performance

Recent advances in clinical probiotic research for sport

(https://journals.lww.com/co-clinicalnutrition/Abstract/9000/Recent_advances_in_clinical_probiotic_research_for.99050.aspx) Ralf Jäger, Alex E. Mohr, Jamie N. Pugh Curr Opin Clin Nutr Metab Care 2020. 23:428-436.

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August 2020

Research Article ǀ Open Access ǀ ATP, Safety

Subchronic (90-Day) repeated dose toxicity study of disodium adenosine-5'-triphosphate in rats

(www.sciencedirect.com/science/article/pii/S0273230020301860) Ralf Jäger, Martin Purpura, John C Fuller Jr Regul Toxicol Pharmacol 2020, 116:104760

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May 2020

Review ǀ Open Access ǀ Microbiota, Sports Nutrition, Diet

The athletic gut microbiota

(https://jissn.biomedcentral.com/articles/10.1186/s12970-020-00353-w) Alex E. Mohr, Ralf Jäger, Katie C. Carpenter, Chad M. Kerksick, Martin Purpura, Jeremy R. Townsend, Nicholas P. West, Katherine Black, Michael Gleeson, David B. Pyne, Shawn D. Wells, Shawn M. Arent, Richard B. Kreider, Bill I. Campbell, Laurent Bannock, Jonathan Scheiman, Craig J. Wissent, Marco Pane, Douglas S. Kalman, Jamie N. Pugh, Carmen P. Ortega-Santos, Jessica A. ter Haar, Paul J. Arciero, Jose Antonio J Int Soc Sports Nutr 2020, 17:24.

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May 2020

Research Article ǀ Open Access ǀ Probiotics, Protein, BCAA

Probiotic Administration Increases Amino Acid Absorption from Plant Protein: a Placebo-Controlled, Randomized, Double-Blind, Multicenter, Crossover Study

(link.springer.com/article/10.1007/s12602-020-09656-5) Ralf Jäger, Javier Zaragoza, Martin Purpura, Stefania Iametti, Mauro Marengo, Grant M. Tinsley, Anthony J. Anzalone, Jonathan M. Oliver, Walter Fiore, Andrea Biffi, Stacie Urbina, Lem Taylor Probiotics Antimicro Prot 2020, 12:1330-1339.

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April 2020

Research Article ǀ Open Access ǀ Beta-Glucan, Sports Nutrition, Immune Health

Yeast Beta-Glucan Supplementation Downregulates Markers of Systemic Inflammation after Heated Treadmill Exercise

(www.mdpi.com/2072-6643/12/4/1144) Hannah A. Zabriskier, Julia C. Blumkaitis, Jessica M. Moon, Bradley S. Currier, Riley Stefan, Kayla Ratliff, Patrick S. Harty, Richard A. Stecker, Karolina Rudnicka, Ralf Jäger, Michael D. Roberts, Kaelin Young, Andrew R. Jagim, , Chad M Kerksick Nutrients 2020, 12(4):1144.

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December 2019

Review ǀ Open Access ǀ Sports Nutrition, Probiotics

International Society of Sports Nutrition Position Stand: Probiotics

(jissn.biomedcentral.com) Ralf Jäger, Alex E. Mohr, Katie C. Carpenter, Chad M. Kerksick, Martin Purpura, Adel Moussa, Jeremy R. Townsend, Manfred Lamprecht, Nicholas P. West, Katherine Black, Michael Gleeson, David B. Pyne, Shawn D. Wells, Shawn M. Arent, Abbie E. Smith-Ryan, Richard B. Kreider, Bill I. Campbell, Laurent Bannock, Jonathan Scheiman, Craig J. Wissent, Marco Pane, Douglas S. Kalman, Jamie N. Pugh, Jessica A. ter Haar, Jose Antonio J Int Soc Sports Nut 2019, 16:62.

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July 2019

Research Article ǀ Open Access ǀ Curcumin, Sports Nutrition, Performance

Eight Weeks of a High Dose of Curcumin Supplementation May Attenuate Performance Decrements Following Muscle-Damaging Exercise.

(www.mdpi.com/2072-6643/11/7/1692) Ralf Jäger, Martin Purpura, Chad M Kerksick Nutrients 2019, 11:1642.

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August 2018

Review ǀ Open Access ǀ Sports Nutrition, Protein, Creatine

ISSN exercise & sports nutrition review update: research & recommendations.

(jissn.biomedcentral.com/articles/10.1186/s12970-018-0242-y) Chad M. Kerksick, Colin D. Wilborn, Michael D. Roberts, Abbie Smith-Ryan, Susan M. Kleiner, Ralf Jäger, Rick Collins, Mathew Cooke, Jaci N. Davis, Elfego Galvan, Mike Greenwood, Lonnie M. Lowery, Robert Wildman, Jose Antonio, Richard B. Kreider J Int Soc Sports Nutr 2018, 15:38.

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August 2018

Research Article ǀ Open Access ǀ Capsaicinoids, Weight Management, Body Fat

Capsaicinoids supplementation decreases percent body fat and fat mass: adjustment using covariates in a post hoc analysis.

(https://jissn.biomedcentral.com/articles/10.1186/s40608-018-0197-1) James Rogers, Stacie L. Urbina, Lem W. Taylor, Colin D. Wilborn, Martin Purpura, Ralf Jäger, Vijaya Juturu BMC Obesity 2018, 5:22.

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April 2018

Research Article ǀ Open Access ǀ Muscle Health, Sports Nutrition, Krill Oil

The Effects of Krill Oil on mTOR Signaling and Resistance Exercise: A Pilot Study

(www.hindawi.com/journals/jnme/2018/7625981/) John Georges, Matthew H. Sharp, Ryan P. Lowery, Jacob M. Wilson, Martin Purpura, Troy A. Hornberger, Flint Harding, James H. Johnson, David M. Peele, Ralf Jäger J Nutr Metab 2018, 2018:7625981.

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April 2018

Research Article ǀ Open Access ǀ Curcumin, Bioavailability

Analysis of different innovative formulations of curcumin for improved relative oral bioavailability in human subjects

(link.springer.com/article/10.1007%2Fs00394-016-1376-9) Martin Purpura, Ryan P. Lowery, Jacob M. Wilson, Haider Mannan, Gerald Münch, Valentina Razmovski-Naumovski Eur J Nutr 2018, 57:929.

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December 2017

Review ǀ Open Access ǀ Gut Health, Probiotics, Protein

Probiotic Bacillus coagulans GBI-30, 6086 Improves Protein Absorption and Utilization.

(link.springer.com/article/10.1007%2Fs12602-017-9354-y) Ralf Jäger, Martin Purpura, Sean Farmer, Howard A. Cash, David Keller Probiotics Antimicrob Proteins 2017, Dec 1 [Epub ahead of print].

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June 2017

Research Article ǀ Open Access ǀ Weight Management, Appetite, Capsaicinoids

Effects of twelve weeks of capsaicinoid supplementation on body composition, appetite and self-reported caloric intake in overweight individuals.

(www.sciencedirect.com/science/article/pii/S0195666317302623) Stacie L. Urbina, Michael D. Roberts, Wesley C. Kephart, Katelyn B. Villa, Emily N. Santos, Alyssa M. Olivencia, Haley M. Bennett, Marissa D. Lara, Cliffa A. Foster, Martin Purpura, Ralf Jäger, Lem W. Taylor, Colin D. Wilborn Appetite 2017, 113:264-273.

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June 2017

Review ǀ Open Access ǀ Muscle Health, Sports Nutrition, Protein

International Society of Sports Nutrition Position Stand: Protein and Exercise.

(https://jissn.biomedcentral.com/articles/10.1186/s12970-017-0177-8) Ralf Jäger, Chad M. Kerksick, Bill I. Campbell, Paul J. Cribb, Shawn D. Wells, Tim M. Skwiat, Martin Purpura, Tim N. Ziegenfuss, Arny A. Ferrando, Shwan M. Arent, Abbie E. Smith-Ryan, Jeffrey R. Stout, Paul J. Arciero, Michael J. Ormsbee, Lem W. Taylor, Colin D. Wilborn, Doug S. Kalman, Richard B. Kreider, Darryn S. Willoughby, Jay R. Hoffman, Jamie L. Krzykowski, Jose Antonio J Int Soc Sports Nutr 2017, 14:20.

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April 2017

Poster Presentation ǀ Open Access ǀ Curcumin, Performance, Sports Nutrition

Novel Form of Curcumin Attenuates Performance Decrements Following Muscle Damaging Exercise

(www.fasebj.org/doi/abs/10.1096/fasebj.31.1_supplement.lb415) Jonathan M. Oliver, Aaron R. Caldwell, Elizabeth Sanders, Joel B. Mitchell, David Rowlands, Martin Purpura, Ralf Jäger FASEB J. 2017, 31(1):Supplement lb415

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April 2017

Poster Presentation ǀ Open Access ǀ Curcumin, Muscle Damage, Sports Nutrition

Curcumin Reduces Muscle Damage and Soreness Following Muscle-Damaging Exercise

(www.fasebj.org/doi/abs/10.1096/fasebj.31.1_supplement.lb766) Ralf Jäger, Aaron R. Caldwell, Elizabeth Sanders, Joel B. Mitchell, James Rogers, Martin Purpura, Jonathan M. Oliver FASEB J. 2017, 31(1):Supplement lb766

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January 2017

Research Article ǀ Open Access ǀ Muscle Health, Sports Nutrition, ATP

Oral Adenosine-5′-Triphosphate (ATP) Administration Increases Post-Exercise ATP Levels, Muscle Excitability and Athletic Performance Following a Repeated Sprint Bout.

(https://www.tandfonline.com/doi/abs/10.1080/07315724.2016.1246989) Martin Purpura, John A. Rathmacher, Matthew H. Sharp, Ryan P. Lowery, Kevin A. Shields, Jeremy M. Partl, Jacob M. Wilson, Ralf Jäger J Am Coll Nutr. 2017, 36(3):177-183.

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October 2016

Research Article ǀ Open Access ǀ Probiotics, Sports Nutrition, Performance

Probiotic Streptococcus thermophilus FP4 and Bifidobacterium breve BR03 Supplementation Attenuates Performance and Range-of-Motion Decrements Following Muscle Damaging Exercise

(www.mdpi.com/2072-6643/8/10/642) Ralf Jäger, Martin Purpura, Jason D. Stone, Stephanie M. Turner, Anthony J Anzalone, Micah J. EImerbrink, M. Pane. Angela Amoruso, David S. Rowlands, Jonathan M. Oliver Nutrients 2016, 8(10):642.

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September 2016

Poster Presentation ǀ Open Access ǀ Creatine, Bioavaialability

Reduction of plasma creatine concentrations as an indicator of improved bioavailability

(https://jissn.biomedcentral.com/articles/10.1186/s12970-016-0144-9) Ralf Jäger, Martin Purpura, Roger C. Harris J Int Soc Sports Nutr 2016, 13(Suppl 1):33

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July 2016

Research Article ǀ Open Access ǀ Heart Health, Blood Flow, Curcumin

Novel Form of Curcumin Improves Endothelial Function in Young, Healthy Individuals: A Double-Blind Placebo Controlled Study

(www.hindawi.com/journals/jnme/2016/1089653/) Jonathan M. Oliver, Lee Stoner, David S. Rowlands, Aaron R. Caldwell, Elizabeth Sanders, Andreas Kreutzer, Joel B. Mitchell, Martin Purpura, Ralf Jäger J Nutr Metab 2016, 2016:1089653.

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July 2016

Research Article ǀ Open Access ǀ Gut Health, Probiotics, Sports Nutrition

Probiotic Bacillus coagulans GBI-30, 6086 Reduces Exercise-Induced Muscle Damage and Increases Recovery.

(https://peerj.com/articles/2276/) Ralf Jäger, Kevin A. Shields, Ryan P. Lowery, Eduard O. De Souza, Jeremy M. Partl, Chase Hollmer, Martin Purpura, Jacob M. Wilson, PeerJ 2016, 4:e2276.

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December 2015

Poster Presentation ǀ Open Access ǀ Plant Protein, Digestive Enzymes, Bioavailability

Digestive enzymes reduce quality differences between plant and animal proteins: a double-blind crossover study

(https://link.springer.com/article/10.1186%2F1550-2783-12-S1-P26) Julie Minevich, Mark A. Olsen, Joseph P. Mannion, Jaroslav H. Boublik, Josh O. McPherson, Ryan P. Lowery, Kevin Shields, Matthew Sharp, Eduardo O. De Souza, Jacob M. Wilson, Ralf Jäger J Int Soc Sports Nutr 2015, 12:P26

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July 2015

Review ǀ Open Access ǀ Muscle Health, Sports Nutrition, Beta-Alanine

International Society of Sports Nutrition Position Stand: Beta-Alanine.

(https://jissn.biomedcentral.com/articles/10.1186/s12970-015-0090-y) Eric T. Trexler, Abbie E. Smith-Ryan, Jeffrey R. Stout, Jay R. Hoffman, Colin D. Wilborn, Craig Sale, Richard B. Kreider, Ralf Jäger, Conrad P. Earnest, Laurent Bannock, Bill I. Campbell, Doug S. Kalman, Tim. N. Ziegenfuss, Jose Antonio J Int Soc Sports Nutr 2015, 13:20.

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November 2014

Research Article ǀ Open Access ǀ Plant Protein, Rice Protein, Bioavailability

A Comparison of Blood Amino Acids Concentrations Following Ingestion of Rice and Whey Protein Isolate: A Double-Blind Crossover Study.

(https://www.annexpublishers.co/full-text/JNH/306/A-Comparison-of-Blood-Amino-Acid-Concentrations-Following-Ingestion-of-Rice-and-Whey-Protein-Isolate-A-Double-Blind-Crossover-Study.php) Martin Purpura, Ryan P. Lowery, Jordan M. Joy, Eduard O. De Souza, Doug S. Kalman, Ralf Jäger, Jacob M. Wilson J Nutr Health Sci 2014, 1(3):306.

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June 2014

Research Article ǀ Open Access ǀ Muscle Health, Sports Nutrition, Phosphatidic Acid

Phosphatidic acid enhances mTOR signaling and resistance exercise induced hypertrophy.

(https://nutritionandmetabolism.biomedcentral.com/articles/10.1186/1743-7075-11-29) Jordan M. Joy, David M. Gundermann, Ryan P. Lowery, Ralf Jäger, Sean A. McCleary, Martin Purpura, Michael D Roberts, Stephanie M.C. Wilson, Troy A Hornberger, Jacob M. Wilson Nutr Metab (Lond). 2014 11:29.

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June 2014

Research Article ǀ Open Access ǀ Heart Health, Blood Flow, ATP

Oral adenosine-5’-triphosphate (ATP) administration increases blood flow following exercise in animals and humans

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-11-28) Ralf Jäger, Michael D. Roberts, Ryan P. Lowery, Jordan M. Joy, Clayton L. Cruthirds, Christopher M. Lockwood, John A. Rathmacher, Martin Purpura, Jacob M. Wilson J Int Soc Sports Nutr 2014, 11:28.

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February 2014

Research Article ǀ Open Access ǀ Creatine, Russian Tarragon, Muscle

Effects of short-term ingestion of Russian Tarragon prior to creatine monohydrate supplementation on whole body and muscle creatine retention and anaerobic sprint capacity: a preliminary investigation

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-11-6) Jonathan M. Oliver, Andrew R Jagim, Ivo Pischel, Ralf Jäger, Martin Purpura, Adam Sanchez, James Fluckey, Steven Riechman, Michael Greenwood, Katherine Kelly, Cynthia Meininger, Christopher Rasmussen, Richard B. Kreider J Int Soc Sports Nutr 2014, 11:6.

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January 2014

Research Article ǀ Open Access ǀ Curcumin, Bioavailability

Comparative absorption of curcumin formulations

(https://nutritionj.biomedcentral.com/articles/10.1186/1475-2891-13-11) Ralf Jäger, Ryan P Lowery, Allison V. Calvanese, Jordan M. Joy, Martin Purpura, Jacob M Wilson Nutr J 2014, 13:11.

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December 2013

Poster Presentation ǀ Open Access ǀ Phosphatidic Acid, Safety

Safety of soy-derived phosphatidic acid supplementation in healthy young males

(https://link.springer.com/article/10.1186%2F1550-2783-10-S1-P6) Joshua E. Dudeck, Jordan M. Joy, Ryan P. Lowery, Eduardo O. De Souza, Ralf Jäger, Sean A. McCleary, Stephanie M.C. Wilson, Martin Purpura, Jacob M. Wilson J Int Soc Sports Nutr 2013, 10:P6

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June 2013

Research Article ǀ Open Access ǀ Muscle Health, Plant Protein, Sports Nutrition

The effects of 8 weeks of whey or rice protein supplementation on body composition and exercise performance

(https://nutritionj.biomedcentral.com/articles/10.1186/1475-2891-12-86) Jordan M. Joy, Ryan P. Lowery, Jacob M. Wilson, Martin Purpura, Eduard O. De Souza, Stephanie M.C. Wilson, Douglas S. Kalman, Joshua E. Dudeck, Ralf Jäger Nutr J 2013, 12:86.

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May 2013

Poster Presentation ǀ Open Access ǀ Probiotics, Prebiotics, Synbiotics

Pro- and Prebiotic In Vitro Screening to Identify Potential Best-Match Synbiotics

(www.gastrojournal.org/article/S0016-5085(13)63345-4/pdf) Ralf Jäger, Martin Purpura, Jeroen Kiers, Mark Olsen Gastroenterology 2013, 144(5 Suppl 1):S-898

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March 2013

Research Article ǀ Open Access ǀ ADHD, Phosphatidylserine, Cognition

The effect of phosphatidylserine administration on memory and symptoms of attention-deficit hyperactivity disorder: a randomised, double-blind, placebo-controlled clinical trial

(https://onlinelibrary.wiley.com/doi/abs/10.1111/jhn.12090) Satoshi Hirayama, Koji Terasawa, Roland Rabeler, Takuma Hirayama, Toshitada Inoue, Yasuhisa Tatsumi, Martin Purpura, Ralf Jäger J Hum Nutr Diet. 2013, Suppl 2:284-291

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October 2012

Research Article ǀ Open Access ǀ Muscle Health, Sports Nutrition, Phosphatidic Acid

Efficacy of phosphatidic acid ingestion on lean body mass, muscle thickness and strength gains in resistance-trained men

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-9-47) Jay R Hoffman, Jeffery R Stout, David R Williams, Adam J Wells, Maren S Fragala, Gerald T Mangine, Adam M Gonzalez, Nadia S Emerson, William P McCormack, Tyler C Scanlon, Martin Purpura, Ralf Jäger J Int Soc Sports Nutr 2012, 9:47.

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March 2011

Review ǀ Open Access ǀ Creatine, Safety, Sports Nutrition

Analysis of the efficacy, safety, and regulatory status of novel forms of creatine

(https://link.springer.com/article/10.1007%2Fs00726-011-0874-6) Ralf Jäger, Martin Purpura, Andrew Shao, Toshitada Inoue, Richard B. Kreider Amino Acids 2011, 40(5): 1169-1383.

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December 2010

Research Article ǀ Open Access ǀ Brain Health, Cognition, Focus

The effects of acute and prolonged CRAM supplementation on reaction time and subjective measures of focus and alertness in healthy college students

(https://link.springer.com/article/10.1007%2Fs00726-011-0874-6) Jay R. Hoffman, Nicholas A. Ratamess, Adam Gonzalez, Noah A. Beller, Mattan W. Hoffman, Mark Olson, Martin Purpura, Ralf Jäger J Int Soc Sports Nutr 2010, 7:39.

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September 2010

Poster Presentation ǀ Open Access ǀ Cognition, Sports Nutrition, Phosphatidylserine

The effects of phosphatidylserine supplementation on cognitive functioning prior and following an acute bout of resistance training in young males

(https://link.springer.com/article/10.1186%2F1550-2783-7-S1-P2) Adam Parker, Josh Gordon, Aaron Thornton, John Lubker, Michelle Bartlett, Ralf Jäger, Martin Purpura, Mike Bird, Jonathan Oliver, Sunday Simbo, Chris Rasmussen, Richard B. Kreider J Int Soc Sports Nutr 2010, 7:P2

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September 2008

Poster Presentation ǀ Open Access ǀ Creatine, Russian Tarragon, Bioavailability

The effect of Russian Tarragon (Artemisia Dracunculus L.) on the plasma creatine concentration with creatine monohydrate administration

(https://link.springer.com/article/10.1186%2F1550-2783-5-S1-P4) Ralf Jäger, Iain P. Kendrick, Martin Purpura, Roger C. Harris, David M. Ribnicky, Ivo Pischel J Int Soc Sports Nutr 2008, 5:P4

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September 2008

Poster Presentation ǀ Open Access ǀ Brain Health, L-Theanine, Mental Regeneration

Improving Mental Regeneration After Physical Exercise

(https://link.springer.com/article/10.1186%2F1550-2783-5-S1-P3) Ralf Jäger, Martin Purpura, Kurt-Reiner Geiss, Thorsten Barthel, Reinhard Schnittker, Michael Weiß J Int Soc Sports Nutr 2008, 5:P3

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July 2008

Research Article ǀ Open Access ǀ Phosphatidylserine, Cortisol, Testosterone

The effect of phosphatidylserine on endocrine response to moderate intensity exercise

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-5-11) Michael A. Starks, Stacy L. Starks, Michael Kingsley, Martin Purpura, Ralf Jäger J Int Soc Sports Nutr 2008, 5:11

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February 2008

Research Article ǀ Open Access ǀ Creatine Pyruvate, Creatine Citrate, Sports Nutrition

The effects of creatine pyruvate and creatine citrate on performance during high intensity exercise

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-5-4) Ralf Jäger, Jan Metzger, Karin Lautmann, Vladimir Shushakov, Martin Purpura, Kurt-Reiner Geiss, Norbert Maassen J Int Soc Sports Nutr 2008, 5:4

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December 2007

Research Article ǀ Open Access ǀ Golf, Phosphatidylserine, Sports Nutrition

The effect of phosphatidylserine on golf performance

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-4-23) Ralf Jäger, Martin Purpura, Kurt-Reiner Geiss, Michael Weiß, Jochen Baumeister, Francesco Amatulli, Lars Schröder, Holger Herwegen J Int Soc Sports Nutr 2007, 4:23

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November 2007

Research Article ǀ Open Access ǀ Creatine, Bioavailability

Comparison of new forms of creatine in raising plasma creatine levels

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-4-17) Ralf Jäger, Roger C. Harris, Martin Purpura, Marc Francaux J Int Soc Sports Nutr 2007, 4:17

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July 2007

Review ǀ Open Access ǀ Phospholipids, Sports Nutrition

Phospholipids and sports performance

(https://jissn.biomedcentral.com/articles/10.1186/1550-2783-4-5) Ralf Jäger, Martin Purpura, Michael Kingsley J Int Soc Sports Nutr 2007, 4:5