Journal of the International Society of Sports Nutrition (JISSN) focuses on the acute and chronic effects of sports nutrition and supplementation strategies on body composition, physical performance and metabolism. JISSN is aimed at researchers and sport enthusiasts focused on delivering knowledge on exercise and nutrition on health, disease, rehabilitation, training, and performance. The journal provides a platform on which readers can determine nutritional strategies that may enhance exercise and/or training adaptations leading to improved health and performance.

Article
1. Effects of short-term betaine supplementation on muscle endurance and indices of endocrine function following acute high-intensity resistance exercise in young athletes
Hamid Arazi, Shima Aboutalebi, Behzad Taati, Jason M. Cholewa & Darren G. Candow

2. Intensified training in adolescent female athletes: a crossover study of Greek yogurt effects on indices of recovery
Brandon J. McKinlay, Phillip J. Wallace, Shai Olansky, Stacey Woods, Nigel Kurgan, Brian D. Roy, Andrea R. Josse, Bareket Falk & Panagiota Klentrou

3. Vitamin D supplementation and body composition changes in collegiate basketball players: a 12-week randomized control trial
Tamara Hew-Butler, Carrie Aprik, Brigid Byrd, Jordan Sabourin, Matthew VanSumeren, Valerie Smith-Hale & Andrew Blow

4. Dietary Intakes, Knowledge, and Perceptions of Semi-professional Rugby Athletes in Scotland
Sonam Hitendre, Rebecca Jordan, Christos Theodorakopoulos & Lois White

5. The ergogenic effect of acute carnosine and anserine supplementation: dosing, timing, and underlying mechanism
Sarah de Jager, Laura Blancquaert, Thibaux Van der Stede, Eline Lievens, Siegrid De Baere, Siska Croubels, Ettore Gilardoni, Luca G. Regazzoni, Giancarlo Aldini, Jan G. Bourgois & Wim Derave

6. Fluctuations in food and fluid intake during a 24-h World Championship: analysis of the deviation from nutritional programs
Keyne Charlot, Chloé Lavoué, Julien Siracusa, Emeric Chalchat, Pierre Hertert & Cyprien Bourrilhon

7. Influence of physical training on intracellular and extracellular zinc concentrations
Víctor Toro-Román, Jesús Siquier-Coll, Ignacio Bartolomé, Francisco J. Grijota, Diego Muñoz & Marcos Maynar-Mariño

8. The influence of caffeinated and non-caffeinated multi-ingredient pre-workout supplements on resistance exercise performance and subjective outcomes
Matthew T. Stratton, Madelin R. Siedler, Patrick S. Harty, Christian Rodriguez, Jake R. Boykin, Jacob J. Green, Dale S. Keith, Sarah J. White, Brielle DeHaven, Abegale D. Williams & Grant M. Tinsley

9. Review
Cultural differences in hydration practices among physically active individuals: a narrative review
Clarence Hong Wei Leow, Beverly Tan, Masashi Miyashita & Jason Kai Wei Lee

10. Pre-sleep protein supplementation after an acute bout of evening resistance exercise does not improve next day performance or recovery in resistance trained men
Michael J. Ormsbee, Patrick G. Saracino, Margaret C. Morrissey, Jaymie Donaldson, Liliana I. Rentería & Andrew J. McKune

11. Reducing energy availability in male endurance athletes: a randomized trial with a three-step energy reduction
Iva Jurov, Nicola Keay & Samo Rauter

12. Effects of beta-alanine supplementation on body composition: a GRADE-assessed systematic review and meta-analysis
Damoon Ashtary-Larky, Reza Bagheri, Matin Ghanavati, Omid Asbaghi, Alexei Wong, Jeffrey R. Stout & Katsuhiko Suzuki

13. An examination into the mental and physical effects of a saffron extract (affron®) in recreationally-active adults: A randomized, double-blind, placebo-controlled study
Adrian L Lopresti & Stephen J Smith

14. Royal jelly plus coenzyme Q10 supplementation improves high-intensity interval exercise performance via changes in plasmatic and salivary biomarkers of oxidative stress and muscle damage in swimmers: a randomized, double-blind, placebo-controlled pilot trial
Aleksandr N. Ovchinnikov, Antonio Paoli, Vladislav V. Seleznev & Anna V. Deryugina

15. Measured versus label declared macronutrient and calorie content in Colombian commercially available whey proteins
Andrés Zapata-Muriel, Patricia Echeverry, Trisha A. Van Dusseldorp, Jennifer Kurtz & Matías Monsalves-Alvarez

16. International society of sports nutrition position stand: tactical athlete nutrition
Drew E. Gonzalez, Matthew J. McAllister, Hunter S. Waldman, Arny A. Ferrando, Jill Joyce, Nicholas D. Barringer, J. Jay Dawes, Adam J. Kieffer, Travis Harvey, Chad M. Kerksick, Jeffrey R. Stout, Tim N. Ziegenfuss, Annette Zapp, Jamie L. Tartar, Jeffery L. Heileson, Trisha A. VanDusseldorp, Douglas S. Kalman, Bill I. Campbell, Jose Antonio & Richard B. Kreider

17. Dietary practices and supplement use among CrossFit® participants
Matthew Brisebois, Samuel Kramer, Keston G. Lindsay, Chien-Ting Wu & James Kamla

18 Comparison of the polyphenol content and in vitro antioxidant capacity of fruit-based nutritional supplements commonly consumed by athletic and recreationally active populations
Lee Rickards, Anthony Lynn, Margo E. Barker, Mark Russell & Mayur K. Ranchordas

19. Body Composition, Eicosapentaenoic Acid, and Vitamin D are Associated with Army Combat Fitness Test Performance
Jeffery L. Heileson, Jared M. McGowen, Jose M. Moris, Tomas J. Chapman-Lopez, Ricardo Torres, LesLee K. Funderburk & Jeffrey S. Forsse

20. Acute caffeine supplementation enhances several aspects of shot put performance in trained athletes
Verónica Giráldez-Costas, Millán Aguilar-Navarro, Jaime González-García, Juan Del Coso & Juan José Salinero

21. Rapid weight loss among elite-level judo athletes: methods and nutrition in relation to competition performance
Maruša Štangar, Anja Štangar, Volha Shtyrba, Blaž Cigić & Evgen Benedik

22. New perspectives for investigating muscular perfusion response after dietary supplement intake: an exploratory, randomized, double-blind, placebo-controlled crossover trial in healthy young athletes using contrast-enhanced ultrasound (CEUS)
Franziska Bürkle, Julian Doll, Arndt Neide, Simone Gantz, Stefanos Tsitlakidis & Christian Fischer

23. Dihydrocapsiate does not increase energy expenditure nor fat oxidation during aerobic exercise in men with overweight/obesity: a randomized, triple-blinded, placebo-controlled, crossover trial
Francisco J. Osuna-Prieto, Francisco M. Acosta, Unai A. Perez de Arrilucea Le Floc’h, Blanca Riquelme-Gallego, Elisa Merchan-Ramirez, Huiwen Xu, Juan Carlos De La Cruz-Márquez, Francisco J. Amaro-Gahete, Jose M. Llamas-Elvira, Eva M. Triviño-Ibáñez, Antonio Segura-Carretero & Jonatan R Ruiz

24. Seven-month wintertime supplementation of 1200 IU vitamin D has no effect on hand grip strength in young, physically active males: A randomized, controlled study
Leho Rips, Alar Toom, Rein Kuik, Ahti Varblane, Hanno Mölder, Marika Tammaru, Mart Kull, Vahur Ööpik, Jüri-Toomas Kartus, Helena Gapeyeva & Madis Rahu