Articles

A multi-ingredient containing, proteins, carbohydrate and creatine does not attenuate humoral immune response or performance decrease compared to carbohydrate during resistance training

Authors: Nadia Ashrafi, Marcos Seijo, Frank Pullen, Birthe V Nielsen, Joshua Smith, Christian Wilkinson, Yue Fu, Jack Miller, Eneko Larumbe-Zabala and Fernando Naclerio

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

Authors: Julie Minevich, Mark A Olson, Joseph P Mannion, Jaroslav H Boublik, Josh O McPherson, Ryan P Lowery, Kevin Shields, Matthew Sharp, Eduardo O De Souza, Jacob M Wilson, Martin Purpura and Ralf Jäger

The effect of a pre-workout supplement on power performance

Authors: Nic Martinez, Bill Campbell, Ryan Colquhoun, Dominic Cochrane, Madison Franek, Daniel Bove, Jeff Dolan, Laura Buchanan, Mallory Johnson, Courtney St Louis, Priscilla Lamadrid, Paul Hinebaugh, Ashkan Attarzadeh and Allison Pingel

A comparison of raw citrulline and citrulline peptide for increasing exercise-induced vasodilation and blood flow

Authors: Jordan M Joy, Roxanne M Vogel, Paul H Falcone, Matt M Mosman, Aaron C Tribby, Chad M Hughes, Jonathan D Griffin, Schyler B Tabor, Dylan J LeFever, Stephen B McChaughey, Michael P Kim and Jordan R Moon

Effects of matching diet type to obesity-related genotype on body composition changes in women during a six-month resistance-exercise training and walking program

Authors: A Coletta, B Sanchez, A O'Connor, R Dalton, S Springer, M Koozehchian, YP Jung, S Simbo, M Cho, C Goodenough, A Reyes, R Sowinski, L Wilkins, C Rasmussen and RB Kreider

Effects of acute ingestion of a multi-ingredient pre-workout supplement on lower body power and anaerobic sprint performance

Authors: AR Jagim, G Wright, K Schultz, C St Antoine, MT Jones and J M Oliver

Short-term powdered tart cherry supplementation encircling an acute endurance challenge potentially increases running performance and attenuates post-race markers of inflammation

Authors: A O'Connor, K Levers, R Dalton, E Galvan, C Goodenough, S Simbo, S Mertens-Talcott, C Rasmussen, M Greenwood and R Kreider

Effect of post-exercise ingestion of different molecular weight carbohydrate solutions. Part II: The incretin response

Authors: Anthony J Anzalone, Anthony L Almada, Leighsa E Van Eck, Margaret T Jones, Andrew R Jagim, Joel B Mitchell, Meena Shah and Jonathan M Oliver

Effects of shift type, job position and a rigorous work period on physical- and performance-related attributes in female nursing workers

Authors: Brennan J Thompson, Victoria K Banuelas, Chibuzo Akalonu, Matt S Stock and Dean Diersing

Powdered tart cherry supplementation surrounding a single bout of intense resistance exercise demonstrates potential attenuation of recovery strength decrement with no definitive oxidative or inflammatory effect

Authors: K Levers, R Dalton, E Galvan, C Goodenough, A O'Connor, S Simbo, N Barringer, S Mertens-Talcott, C Rasmussen, M Greenwood and R Kreider

A comparison of resting energy prediction equations in young recreationally active women

Authors: J Kisiolek, K Schultz, J Luedke, MT Jones, J M Oliver and AR Jagim

The effects of a botanical anti-inflammatory nutritional supplement while participating in a resistance training program on indices of body composition and metabolic, cardiovascular, muscular, and hemodynamic function in obese females

Authors: Sarah McKinley-Barnard, Josh Gann, Tom Andre, Erika Knue and Darryn S Willoughby

Effects of probiotic supplementation on markers of skeletal muscle damage, perceived recovery and athletic performance after an intense single leg training bout

Authors: Ralf Jäger, Kevin Shields, Matthew Sharp, Jeremey Partl, Jacob M Wilson, Ryan P Lowery, Eduardo O De Souza, Chase Holmer and Martin Purpura

Effect of post-exercise ingestion of different molecular weight carbohydrate solutions. Part III: Power output during a subsequent resistance training bout

Authors: Leighsa E Van Eck, Anthony L Almada, Margaret T Jones, Andrew Jagim, Joel Mitchell and Jonathan M Oliver

Acute hemodynamic effects of a multi-ingredient performance supplement on brachial artery vasodilation and blood flow volume following elbow flexion exercise in healthy young men

Authors: Roxanne M Vogel, Jordan M Joy, Paul H Falcone, Matt M Mosman, Aaron C Tribby, Chad M Hughes, Jonathan D Griffin, Schyler B Tabor, Dylan J LeFever, Stephen B McCaughey, Michael P Kim and Jordan R Moon

Effect of post-exercise ingestion of different molecular weight carbohydrate solutions. Part 1: The glucose and insulin response

Authors: Anthony L Almada, Leighsa E Van Eck, Meena Shah, Margaret T Jones, Andrew Jagim, Ryan Dalton, Joel Mitchell and Jonathan M Oliver

Effects of coffee and caffeine anhydrous on strength and sprint performance

Authors: Eric T Trexler, Erica J Roelofs, Katie R Hirsch, Meredith G Mock and Abbie E Smith-Ryan

The anabolic skeletal muscle response to acute resistance exercise is not impaired in rats fed a ketogenic diet

Authors: C Brooks Mobley, Angelia M Holland, Wesley C Kephart, Ryan P Lowery, Petey W Mumford, Anna E McCloskey, Joshua J Shake, Paulo Mesquita, Jacob M Wilson and Michael D Roberts

Observational case study - Vitamin 25(OH)D status of professional basketball players and its impact on athletic performance and recovery

Authors: Marc Bubbs

Ten weeks of branched chain amino acid supplementation improves select performance and immunological variables in trained cyclists

Authors: Wesley C Kephart, Taylor D Wachs, R Mac Thompson, C Brooks Mobley, Carlton D Fox, James R McDonald, Brian S Ferguson, Kaelin C Young, Ben Nie, Jeffrey S Martin, Joseph M Company, David D Pascoe, Robert D Arnold, Jordan R Moon and Michael D Roberts

Genetic variation related to caffeine metabolism or response during exercise

Authors: Nanci S Guest, Joseph Jamnik, Christopher Womack and Ahmed El-Sohemy

The benefits of inositol-stabilized arginine silicate as a workout ingredient

Authors: S Rood-Ojalvo, D Sandler, E Veledar and J Komorowski

The effects of supplementation with P-Synephrine alone and in combination with caffeine on resistance exercise performance

Little is known concerning the potential ergogenic effects of p-synephrine supplementation. Therefore, the purpose of the present study was to examine the effects of supplementation with p-synephrine alone and in...

Authors: Nicholas A. Ratamess, Jill A. Bush, Jie Kang, William J. Kraemer, Sidney J. Stohs, Vincenzo G. Nocera, Megan D. Leise, Keith B. Diamond and Avery D. Faigenbaum

A review on effects of conjugated linoleic fatty acid (CLA) upon body composition and energetic metabolism

Conjugated linoleic acid (CLA) is highly found in fats from ruminants and it appears to favorably modify the body composition and cardiometabolic risk factors. The capacity of CLA to reduce the body fat levels...

Authors: Tatiana Ederich Lehnen, Marcondes Ramos da Silva, Augusto Camacho, Aline Marcadenti and Alexandre Machado Lehnen

Null effect of ginsenoside Rb1 on improving glycemic status in men during a resistance training recovery

Ginsenoside Rb1, a principle active ingredients of Panax ginseng, has been shown to lower blood glucose in animals and increase insulin secretion in cultured insulinoma cells. The aim of this study was to determi...

Authors: Wei-Hsiang Chang, Ying-Lan Tsai, Chih-Yang Huang, City C. Hsieh, Rungchai Chaunchaiyakul, Yu Fang, Shin-Da Lee and Chia-Hua Kuo

Plausible ergogenic effects of vitamin D on athletic performance and recovery

The purpose of this review is to examine vitamin D in the context of sport nutrition and its potential role in optimizing athletic performance. Vitamin D receptors (VDR) and vitamin D response elements (VDREs)...

Authors: Dylan T. Dahlquist, Brad P. Dieter and Michael S. Koehle

Effects of oral phosphatidic acid feeding with or without whey protein on muscle protein synthesis and anabolic signaling in rodent skeletal muscle

Phosphatidic acid (PA) is a diacyl-glycerophospholipid that acts as a signaling molecule in numerous cellular processes. Recently, PA has been proposed to stimulate skeletal muscle protein accretion, but mecha...

Authors: C. Brooks Mobley, Troy A. Hornberger, Carlton D. Fox, James C. Healy, Brian S. Ferguson, Ryan P. Lowery, Rachel M. McNally, Christopher M. Lockwood, Jeffrey R. Stout, Andreas N. Kavazis, Jacob M. Wilson and Michael D. Roberts

The efficacy of a β-hydroxy-β-methylbutyrate supplementation on physical capacity, body composition and biochemical markers in elite rowers: a randomised, double-blind, placebo-controlled crossover study

β-hydroxy-β-methylbutyric acid (HMB) is an interesting supplement in sports. However, literature sources present a limited number of studies that verify the efficacy of HMB intake over a longer time period amo...

Authors: Krzysztof Durkalec-Michalski and Jan Jeszka

International society of sports nutrition position stand: Beta-Alanine

The International Society of Sports Nutrition (ISSN) provides an objective and critical review of the mechanisms and use of beta-alanine supplementation. Based on the current available literature, the conclusi...

Authors: 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 Campbell, Douglas Kalman, Tim N. Ziegenfuss and Jose Antonio

Rhabdomyolysis and exercise-associated hyponatremia in ultra-bikers and ultra-runners

Exercise-associated hyponatremia (EAH), rhabdomyolysis and renal failure appear to be a unique problem in ultra-endurance racers.

Authors: Daniela Chlíbková, Beat Knechtle, Thomas Rosemann, Ivana Tomášková, Jan Novotný, Alena Žákovská and Tomáš Uher

21 days of mammalian omega-3 fatty acid supplementation improves aspects of neuromuscular function and performance in male athletes compared to olive oil placebo

Omega-3 polyunsaturated fatty acids (N-3) are essential nutrients for human health and integral components of neural tissues. There is evidence that N-3 supplementation may benefit exercise performance, howeve...

Authors: Evan J. H. Lewis, Peter W. Radonic, Thomas M. S. Wolever and Greg D. Wells

Combined L-citrulline and glutathione supplementation increases the concentration of markers indicative of nitric oxide synthesis

Nitric oxide (NO) is endogenously synthesized from L-arginine and L-citrulline. Due to its effects on nitric oxide synthase (NOS), reduced glutathione (GSH) may protect against the oxidative reduction of NO. T...

Authors: Sarah McKinley-Barnard, Tom Andre, Masahiko Morita and Darryn S. Willoughby

Effects of a moderate intake of beer on markers of hydration after exercise in the heat: a crossover study

Exercise in the heat causes important water and electrolytes losses through perspiration. Optimal rehydration is crucial to facilitate the recuperation process after exercise. The aim of our study was to exami...

Authors: David Jiménez-Pavón, Mónica Sofía Cervantes-Borunda, Ligia Esperanza Díaz, Ascensión Marcos and Manuel J. Castillo

Sodium bicarbonate intake improves high-intensity intermittent exercise performance in trained young men

Sodium bicarbonate intake has been shown to improve exercise tolerance, but the effects on high-intensity intermittent exercise are less clear. Thus, the aim of the present study was to determine the effect of...

Authors: Peter Krustrup, Georgios Ermidis and Magni Mohr

Erratum to: The influence of a CYP1A2 polymorphism on the ergogenic effects of caffeine

Authors: Christopher J Womack, Michael J Saunders, Marta K Bechtel, David J Bolton, Michael Martin, Nicholas D Luden, Wade Dunham and Melyssa Hancock

The effects of acute garlic supplementation on the fibrinolytic and vasoreactive response to exercise

The purpose of this project was to examine the effects of acute garlic supplementation on fibrinolysis and vasoreactivity both at rest and following maximal exercise.

Authors: C. J. Womack, D. J. Lawton, L. Redmond, M. K. Todd and T. A. Hargens

Influence of a montmorency cherry juice blend on indices of exercise-induced stress and upper respiratory tract symptoms following marathon running—a pilot investigation

Prolonged exercise, such as marathon running, has been associated with an increase in respiratory mucosal inflammation. The aim of this pilot study was to examine the effects of Montmorency cherry juice on mar...

Authors: Lygeri Dimitriou, Jessica A Hill, Ahmed Jehnali, Joe Dunbar, James Brouner, Malachy P. McHugh and Glyn Howatson

Hydration status and fluid intake of urban, underprivileged South African male adolescent soccer players during training

Poor hydration compromises performance and heightens the risk of heat stress which adolescents are particularly susceptible to as they produce comparatively larger amount of metabolic heat during exercise. Thi...

Authors: Reno Eron Gordon, Susanna Maria Kassier and Chara Biggs

A nutrition and conditioning intervention for natural bodybuilding contest preparation: case study

Bodybuilding competitions are becoming increasingly popular. Competitors are judged on their aesthetic appearance and usually exhibit a high level of muscularity and symmetry and low levels of body fat. Common...

Authors: Scott Lloyd Robinson, Anneliese Lambeth-Mansell, Gavin Gillibrand, Abbie Smith-Ryan and Laurent Bannock

The effect of acute vs chronic magnesium supplementation on exercise and recovery on resistance exercise, blood pressure and total peripheral resistance on normotensive adults

Magnesium supplementation has previously shown reductions in blood pressure of up to 12 mmHg. A positive relationship between magnesium supplementation and performance gains in resistance exercise has also bee...

Authors: Lindsy S Kass and Filipe Poeira

Nutritional knowledge and eating habits of professional rugby league players: does knowledge translate into practice?

Adequate nutrient intake is important to support training and to optimise performance of elite athletes. Nutritional knowledge has been shown to play an important role in adopting optimal nutrition practices. ...

Authors: Ieva Alaunyte, John L Perry and Tony Aubrey

Acknowledgement of manuscript reviewers 2014

The editors of Journal of the International Society of Sports Nutrition would like to thank all our reviewers who have contributed to the journal from Volume 11 (2014).

Authors: Jose Antonio, Douglas Kalman and Richard Kreider

The risks of self-made diets: the case of an amateur bodybuilder

Following DIY (do it yourself) diets as well as consuming supplements exceeding by far the recommended daily intake levels, is common among athletes; these dietary habits often lead to an overconsumption of so...

Authors: Lucio Della Guardia, Maurizio Cavallaro and Hellas Cena

Three and six grams supplementation of d-aspartic acid in resistance trained men

Although abundant research has investigated the hormonal effects of d-aspartic acid in rat models, to date there is limited research on humans. Previous research has demonstrated increased total testosterone l...

Authors: Geoffrey W Melville, Jason C Siegler and Paul WM Marshall

Effects of protein type and composition on postprandial markers of skeletal muscle anabolism, adipose tissue lipolysis, and hypothalamic gene expression

We examined the acute effects of different dietary protein sources (0.19 g, dissolved in 1 ml of water) on skeletal muscle, adipose tissue and hypothalamic satiety-related markers in fasted, male Wistar rats (...

Authors: Christopher Brooks Mobley, Carlton D Fox, Brian S Ferguson, Corrie A Pascoe, James C Healy, Jeremy S McAdam, Christopher M Lockwood and Michael D Roberts

Ergogenic effects of caffeine and sodium bicarbonate supplementation on intermittent exercise performance preceded by intense arm cranking exercise

Caffeine and sodium bicarbonate ingestion have been suggested to improve high-intensity intermittent exercise, but it is unclear if these ergogenic substances affect performance under provoked metabolic acidif...

Authors: Matthaus Marriott, Peter Krustrup and Magni Mohr

Safety of a dose-escalated pre-workout supplement in recreationally active females

Pre-workout supplements (PWS) have increased in popularity among athletic populations for their purported ergogenic benefits. Most PWS contain a “proprietary blend” of several ingredients, such as caffeine, be...

Authors: Roxanne M Vogel, Jordan M Joy, Paul H Falcone, Matt M Mosman, Michael P Kim and Jordan R Moon

The effects PCSO-524®, a patented marine oil lipid and omega-3 PUFA blend derived from the New Zealand green lipped mussel (Perna canaliculus), on indirect markers of muscle damage and inflammation after muscle damaging exercise in untrained men: a randomized, placebo controlled trial

The purpose of the present study was to evaluate the effects of PCSO-524®, a marine oil lipid and n-3 LC PUFA blend, derived from New Zealand green- lipped mussel (Perna canaliculus), on markers of muscle damage ...

Authors: Timothy D Mickleborough, Jacob A Sinex, David Platt, Robert F Chapman and Molly Hirt

Energy availability discriminates clinical menstrual status in exercising women

Conditions of low energy availability (EA) (<30 kcal/kgLBM) have been associated with suppressed metabolic hormones and reductions in LH pulsatility in previously sedentary women during short-term manipulation...

Authors: Jennifer L Reed, Mary Jane De Souza, Rebecca J Mallinson, Jennifer L Scheid and Nancy I Williams

Vitamin C, A and E supplementation decreases the expression of HSPA1A and HSPB1 genes in the leukocytes of young polish figure skaters during a 10-day training camp

Overexpression of HSPA1A and HSPB1 has been shown to indicate stress and the degradation of damaged proteins. Therefore, the expression of these genes is often evaluated during exercise. Vitamin supplementation i...

Authors: Małgorzata Żychowska, Zbigniew Jastrzębski, Grzegorz Chruściński, Monika Michałowska–Sawczyn and Alicja Nowak-Zaleska