Articles

The short-term effect of high versus moderate protein intake on recovery after strength training in resistance-trained individuals

Dietary protein intakes up to 2.9 g.kg⁻¹.d⁻¹ and protein consumption before and after resistance training may enhance recovery, resulting in hypertrophy and strength gains. However, it remains unclear whether pro...

Authors: Justin Roberts, Anastasia Zinchenko, Craig Suckling, Lee Smith, James Johnstone and Menno Henselmans

Native whey protein with high levels of leucine results in similar post-exercise muscular anabolic responses as regular whey protein: a randomized controlled trial

Protein intake is essential to maximally stimulate muscle protein synthesis, and the amino acid leucine seems to possess a superior effect on muscle protein synthesis compared to other amino acids. Native whey...

Authors: Håvard Hamarsland, Anne Lene Nordengen, Sigve Nyvik Aas, Kristin Holte, Ina Garthe, Gøran Paulsen, Matthew Cotter, Elisabet Børsheim, Haakon B. Benestad and Truls Raastad

Enhanced aerobic exercise performance in women by a combination of three mineral Chelates plus two conditionally essential nutrients

Certain essential and conditionally essential nutrients (CENs) perform functions involved in aerobic exercise performance. However, increased intake of such nutrient combinations has not actually been shown to...

Authors: Robert A. DiSilvestro, Staci Hart, Trisha Marshall, Elizabeth Joseph, Alyssa Reau, Carmen B. Swain and Jason Diehl

Nutritional supplement practices of professional Ugandan athletes: a cross-sectional study

The use of nutritional supplements (NS) places athletes at great risk for inadvertent doping. Due to the paucity of data on supplement use, this study aimed to determine the proportion of Ugandan athletes usin...

Authors: Haruna Muwonge, Robert Zavuga, Peninnah Aligawesa Kabenge and Timothy Makubuya

Normative data on regional sweat-sodium concentrations of professional male team-sport athletes

The purpose of this paper was to report normative data on regional sweat-sodium concentrations of various professional male team-sport athletes, and to compare sweat-sodium concentrations among sports. Data to...

Authors: Mayur K. Ranchordas, Nicholas B. Tiller, Girish Ramchandani, Raj Jutley, Andrew Blow, Jonny Tye and Ben Drury

Evaluation of the effects of two doses of alpha glycerylphosphorylcholine on physical and psychomotor performance

Recent studies have suggested that alpha glycerylphosphorylcholine (A-GPC) may be an effective ergogenic aid. The present study was designed to assess the efficacy of two doses of A-GPC in comparison to placeb...

Authors: Lena Marcus, Jason Soileau, Lawrence W. Judge and David Bellar

Effects of a pre-workout supplement on hyperemia following leg extension resistance exercise to failure with different resistance loads

We sought to determine if a pre-workout supplement (PWS), containing multiple ingredients thought to enhance blood flow, increases hyperemia associated with resistance training compared to placebo (PBO). Given...

Authors: Jeffrey S. Martin, Petey W. Mumford, Cody T. Haun, Micheal J. Luera, Tyler W. D. Muddle, Ryan J. Colquhoun, Mary P. Feeney, Cameron S. Mackey, Paul A. Roberson, Kaelin C. Young, David D. Pascoe, Jason M. DeFreitas, Nathaniel D. M. Jenkins and Michael D. Roberts

Identifying and assessing views among physically-active adult gym members in Israel on dietary supplements

Sports dietary supplements are available for sale in public places including sports clubs. Although there is uncertainty regarding their safety, many gym members who regularly work out consume them. The presen...

Authors: Inbal Druker and Anat Gesser-Edelsburg

Vegan diets: practical advice for athletes and exercisers

With the growth of social media as a platform to share information, veganism is becoming more visible, and could be becoming more accepted in sports and in the health and fitness industry. However, to date, th...

Authors: David Rogerson

Practical nutritional recovery strategies for elite soccer players when limited time separates repeated matches

Specific guidelines that aim to facilitate the recovery of soccer players from the demands of training and a congested fixture schedule are lacking; especially in relation to evidence-based nutritional recomme...

Authors: Mayur Krachna Ranchordas, Joel T. Dawson and Mark Russell

The effects of phenylalanine on exercise-induced fat oxidation: a preliminary, double-blind, placebo-controlled, crossover trial

When combined with exercise, dietary amino acid (AA) supplementation is an effective method for accelerating fat mobilization. However, the effects of single AAs combined with exercise on fat oxidation remains...

Authors: Keisuke Ueda, Chiaki Sanbongi, Makoto Yamaguchi, Shuji Ikegami, Takafumi Hamaoka and Satoshi Fujita

Proceedings of the Fourteenth International Society of Sports Nutrition (ISSN) Conference and Expo

Authors:

Enzymatically modified isoquercitrin supplementation intensifies plantaris muscle fiber hypertrophy in functionally overloaded mice

Enzymatically modified isoquercitrin (EMIQ) is produced from rutin using enzymatic hydrolysis followed by treatment with glycosyltransferase in the presence of dextrin to add glucose residues. EMIQ is absorbed...

Authors: Akiko Kohara, Masanao Machida, Yuko Setoguchi, Ryouichi Ito, Masanori Sugitani, Hiroko Maruki-Uchida, Hiroyuki Inagaki, Tatsuhiko Ito, Naomi Omi and Tohru Takemasa

International society of sports nutrition position stand: nutrient timing

The International Society of Sports Nutrition (ISSN) provides an objective and critical review regarding the timing of macronutrients in reference to healthy, exercising adults and in particular highly trained...

Authors: Chad M. Kerksick, Shawn Arent, Brad J. Schoenfeld, Jeffrey R. Stout, Bill Campbell, Colin D. Wilborn, Lem Taylor, Doug Kalman, Abbie E. Smith-Ryan, Richard B. Kreider, Darryn Willoughby, Paul J. Arciero, Trisha A. VanDusseldorp, Michael J. Ormsbee, Robert Wildman, Mike Greenwood…

Branched-chain amino acids and muscle protein synthesis in humans: myth or reality?

The branched chain amino acids (BCAAs) are leucine, valine and isoleucine. A multi-million dollar industry of nutritional supplements has grown around the concept that dietary supplements of BCAAs alone produc...

Authors: Robert R. Wolfe

Availability of a sports dietitian may lead to improved performance and recovery of NCAA division I baseball athletes

The purpose was to survey dietary habits (DH) and nutrient timing (NT) practices of baseball student-athletes (mean ± SD; 20.7 ± 1.4 yr.) from three NCAA Division I institutions, and examine the effect of a sport...

Authors: Michael V. Hull, Jonathan Neddo, Andrew R. Jagim, Jonathan M. Oliver, Mike Greenwood and Margaret T. Jones

Acute cocoa Flavanols intake has minimal effects on exercise-induced oxidative stress and nitric oxide production in healthy cyclists: a randomized controlled trial

Cocoa flavanols (CF) can stimulate vasodilation by improved nitric oxide (NO) synthesis and have antioxidant and anti-inflammatory capacities. This study aimed to examine whether acute CF intake can affect exe...

Authors: Lieselot Decroix, Cajsa Tonoli, Danusa Dias Soares, Amandine Descat, Marie-José Drittij-Reijnders, Antje R. Weseler, Aalt Bast, Wilhelm Stahl, Elsa Heyman and Romain Meeusen

Salivary diagnostic markers in males and females during rest and exercise

Saliva is a useful diagnostic tool for analysis in sports, exercise and nutrition research, as collection is easy and non-invasive and it contains a large number of analytes affected by a range of physiologica...

Authors: Kay Rutherfurd-Markwick, Carlene Starck, Deborah K. Dulson and Ajmol Ali

The nutrition for sport knowledge questionnaire (NSKQ): development and validation using classical test theory and Rasch analysis

Appropriate dietary intake can have a significant influence on athletic performance. There is a growing consensus on sports nutrition and professionals working with athletes often provide dietary education. Ho...

Authors: Gina Louise Trakman, Adrienne Forsyth, Russell Hoye and Regina Belski

Individual fluid plans versus ad libitum on hydration status in minor professional ice hockey players

Despite exercising in cool environments, ice hockey players exhibit several dehydration risk factors. Individualized fluid plans (IFPs) are designed to mitigate dehydration by matching an individual’s sweat lo...

Authors: Dawn M. Emerson, Toni M. Torres-McGehee, Charles C. Emerson and Teri L. LaSalle

Effects of Methylsulfonylmethane (MSM) on exercise-induced oxidative stress, muscle damage, and pain following a half-marathon: a double-blind, randomized, placebo-controlled trial

Oxidative stress and muscle damage occur during exhaustive bouts of exercise, and many runners report pain and soreness as major influences on changes or breaks in training regimens, creating a barrier to trai...

Authors: Eric D. Withee, Kimberly M. Tippens, Regina Dehen, Deanne Tibbitts, Douglas Hanes and Heather Zwickey

Effect of eicosapentaenoic acids-rich fish oil supplementation on motor nerve function after eccentric contractions

This study investigated the effect of supplementation with fish oil rich in eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) on the M-wave latency of biceps brachii and muscle damage after a single s...

Authors: Eisuke Ochi, Yosuke Tsuchiya and Kenichi Yanagimoto

Ketogenic diet benefits body composition and well-being but not performance in a pilot case study of New Zealand endurance athletes

Low-carbohydrate, high-fat and ketogenic diets are increasingly adopted by athletes for body composition and sports performance enhancements. However, as yet, there is no consensus on their efficacy in improvi...

Authors: Caryn Zinn, Matthew Wood, Mikki Williden, Simon Chatterton and Ed Maunder

Effects of a combined protein and antioxidant supplement on recovery of muscle function and soreness following eccentric exercise

An acute bout of eccentric contractions (ECC) cause muscle fiber damage, inflammation, impaired muscle function (MF) and muscle soreness (MS). Individually, protein (PRO) and antioxidant (AO) supplementation m...

Authors: Stephen J. Ives, Samuel Bloom, Alexs Matias, Noelle Morrow, Natalya Martins, Yookee Roh, Daniel Ebenstein, Gabriel O’Brien, Daniela Escudero, Kevin Brito, Leah Glickman, Scott Connelly and Paul J. Arciero

International Society of Sports Nutrition Position Stand: protein and exercise

The International Society of Sports Nutrition (ISSN) provides an objective and critical review related to the intake of protein for healthy, exercising individuals. Based on the current available literature, t...

Authors: 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, Shawn M. Arent, Abbie E. Smith-Ryan, Jeffrey R. Stout, Paul J. Arciero, Michael J. Ormsbee, Lem W. Taylor, Colin D. Wilborn…

International society of sports nutrition position stand: diets and body composition

Position Statement: The International Society of Sports Nutrition (ISSN) bases the following position stand on a critical analysis of the literature regarding the effects of diet types (macronutrient compositi...

Authors: Alan A. Aragon, Brad J. Schoenfeld, Robert Wildman, Susan Kleiner, Trisha VanDusseldorp, Lem Taylor, Conrad P. Earnest, Paul J. Arciero, Colin Wilborn, Douglas S. Kalman, Jeffrey R. Stout, Darryn S. Willoughby, Bill Campbell, Shawn M. Arent, Laurent Bannock, Abbie E. Smith-Ryan…

International Society of Sports Nutrition position stand: safety and efficacy of creatine supplementation in exercise, sport, and medicine

Creatine is one of the most popular nutritional ergogenic aids for athletes. Studies have consistently shown that creatine supplementation increases intramuscular creatine concentrations which may help explain...

Authors: Richard B. Kreider, Douglas S. Kalman, Jose Antonio, Tim N. Ziegenfuss, Robert Wildman, Rick Collins, Darren G. Candow, Susan M. Kleiner, Anthony L. Almada and Hector L. Lopez

Serum concentration of several trace metals and physical training

The aim of this study was to observe the concentrations of trace metals boron, lithium, rubidium, antimony, tin and strontium in the serum of athletes from different modalities and sedentary subjects and the p...

Authors: Marcos Maynar, Francisco Llerena, Francisco J. Grijota, Javier Alves, María C. Robles, Ignacio Bartolomé and Diego Muñoz

Minimal dose of milk protein concentrate to enhance the anabolic signalling response to a single bout of resistance exercise; a randomised controlled trial

Resistance training is a potent stimulus to induce muscle hypertrophy. Supplemental protein intake is known to enhance gains in muscle mass through activation of the mammalian target of rapamycin complex 1 (mT...

Authors: Cameron J. Mitchell, Nina Zeng, Randall F. D’Souza, Sarah M. Mitchell, Kirsten Aasen, Aaron C. Fanning, Sally D. Poppitt and David Cameron-Smith

Evaluation of anti-fatigue property of the extruded product of cereal grains mixed with Cordyceps militaris on mice

Fatigue is a biological phenomenon that involves a feeling of extreme physical or mental tiredness that could potentially cause some severe chronic diseases. Recently, diet therapy has provided a new alternati...

Authors: Lei Zhong, Liyan Zhao, Fangmei Yang, Wenjian Yang, Yong Sun and Qiuhui Hu

The effect of acute pomegranate extract supplementation on oxygen uptake in highly-trained cyclists during high-intensity exercise in a high altitude environment

Recent research has indicated that pomegranate extract (POMx) may improve performance during aerobic exercise by enhancing the matching of vascular oxygen (O₂) provision to muscular requirements. POMx is rich in ...

Authors: Emma May Crum, Ahmad Munir Che Muhamed, Matthew Barnes and Stephen Robert Stannard

Nutrition practices and knowledge among NCAA Division III football players

Participation in collegiate American football is physically demanding and may have long-term health implications, particularly in relation to cardiovascular and neurological health. National Collegiate Athleti...

Authors: Elizabeth Lea Abbey, Cynthia Joy Wright and Christina M. Kirkpatrick

Dietary thiols in exercise: oxidative stress defence, exercise performance, and adaptation

Endurance athletes are susceptible to cellular damage initiated by excessive levels of aerobic exercise-produced reactive oxygen species (ROS). Whilst ROS can contribute to the onset of fatigue, there is incre...

Authors: Yanita McLeay, Stephen Stannard, Stuart Houltham and Carlene Starck

Effect of thyme extract supplementation on lipid peroxidation, antioxidant capacity, PGC-1α content and endurance exercise performance in rats

Athletes have a large extent of oxidant agent production. In the current study, we aimed to determine the influence of thyme extract on the endurance exercise performance, mitochondrial biogenesis, and antioxi...

Authors: Mostafa Khani, Pezhman Motamedi, Mohammad Reza Dehkhoda, Saeed Dabagh Nikukheslat and Pouran Karimi

Simple sugar supplementation abrogates exercise-induced increase in hepcidin in young men

At present many young people experience too much body iron accumulation. The reason of this phenomenon is not clear. There is accumulating evidences that not proper diet and lack of exercise could be a main co...

Authors: Maja Tomczyk, Jakub Kortas, Damian Flis, Wojciech Skrobot, Rafal Camilleri and Jedrzej Antosiewicz

Ingestion of oxygenated water enhances lactate clearance kinetics in trained runners

Drinks with higher dissolved oxygen concentrations have in recent times gained popularity as a potential ergogenic aid, despite a lack of evidence regarding their efficacy. The aim of this study was to assess ...

Authors: Neil Fleming, Jeremiah Vaughan and Matthew Feeback

Abstracts from ISSN Brazil

Authors: André Barroso Heibel, Pedro Henrique Lopes Perim, Bryan Saunders, André Barroso Heibel, Déborah Michelly Abrantes, Caíque Fagundes Rauber, Caio Eduardo Gonçalves Reis, Jeferson Oliveira Santana, Diana Madureira, Elias de França, Caroline Ayme Fernandes Yoshioka, Marco Aurélio Lamolha, Cesar Augustus Zocoler, Paulo Roberto Sousa e Silva, Erico Chagas Caperuto, Janaína Lavalli Goston…

Effects of cranberry (Vaccinum macrocarpon) supplementation on iron status and inflammatory markers in rowers

The aim of this study was to analyze the effect of supplementation with cranberry (Vaccinum macrocarpon) on the levels of pro-inflammatory cytokines, hepcidin and selected markers of iron metabolism in rowers sub...

Authors: Anna Skarpańska - Stejnborn, Piotr Basta, Jerzy Trzeciak, Alicja Michalska, M. Emin Kafkas and Donata Woitas - Ślubowska

Effects of an amylopectin and chromium complex on the anabolic response to a suboptimal dose of whey protein

Previous research has demonstrated the permissive effect of insulin on muscle protein kinetics, and the enhanced insulin sensitizing effect of chromium. In the presence of adequate whole protein and/or essenti...

Authors: T. N. Ziegenfuss, H. L. Lopez, A. Kedia, S. M. Habowski, J. E. Sandrock, B. Raub, C. M. Kerksick and A. A. Ferrando

Effect of low dose, short-term creatine supplementation on muscle power output in elite youth soccer players

To determine the effects of a low dose, short-term Creatine monohydrate (Cr) supplementation (0.03 g.kg.d⁻¹ during 14 d) on muscle power output in elite youth soccer players.

Authors: Aquiles Yáñez-Silva, Cosme F. Buzzachera, Ivan Da C. Piçarro, Renata S. B. Januario, Luis H. B. Ferreira, Steven R. McAnulty, Alan C. Utter and Tacito P. Souza-Junior

Effect of mouth rinsing and ingestion of carbohydrate solutions on mood and perceptual responses during exercise

The aim of this study was to investigate whether mouth rinsing or ingesting carbohydrate (CHO) solutions impact on perceptual responses during exercise.

Authors: Ajmol Ali, Catherine Moss, Michelle Ji Yeon Yoo, Alanah Wilkinson and Bernhard H. Breier

Effects of acute ingestion of a pre-workout dietary supplement with and without p-synephrine on resting energy expenditure, cognitive function and exercise performance

The purpose of this study was to examine the effects of acute ingestion of a pre-workout dietary supplement (PWS) with and without p-synephrine (S) on perceptions of readiness to perform, cognitive function, exer...

Authors: Y. Peter Jung, Conrad P. Earnest, Majid Koozehchian, Elfego Galvan, Ryan Dalton, Dillon Walker, Christopher Rasmussen, Peter S. Murano, Mike Greenwood and Richard B. Kreider

Serum reference value of two potential doping candidates—myostatin and insulin-like growth factor-I in the healthy young male

Myostatin negatively regulates muscle growth, and its inhibition by suitable proteins can increase muscle bulk and exercise performance. However, the reference values of serum myostatin in athletes performing ...

Authors: Der-Sheng Han, Chi-Huang Huang, Ssu-Yuan Chen and Wei-Shiung Yang

Effects of ingesting a pre-workout dietary supplement with and without synephrine for 8 weeks on training adaptations in resistance-trained males

The purpose of this study was to examine whether ingesting a pre-workout dietary supplement (PWS) with and without synephrine (S) during training affects training responses in resistance-trained males.

Authors: Y. Peter Jung, Conrad P. Earnest, Majid Koozehchian, Minye Cho, Nick Barringer, Dillon Walker, Christopher Rasmussen, Mike Greenwood, Peter S. Murano and Richard B. Kreider

The influence of caffeine ingestion on strength and power performance in female team-sport players

The aim of this study was to examine the influence of caffeine supplementation on knee flexor and knee extensor strength before, during and after intermittent running exercise in female team-sport players taki...

Authors: Ajmol Ali, Jemma O’Donnell, Andrew Foskett and Kay Rutherfurd-Markwick

Effect of electrolyzed high-pH alkaline water on blood viscosity in healthy adults

Previous research has shown fluid replacement beverages ingested after exercise can affect hydration biomarkers. No specific hydration marker is universally accepted as an ideal rehydration parameter following...

Authors: Joseph Weidman, Ralph E. Holsworth Jr., Bradley Brossman, Daniel J. Cho, John St.Cyr and Gregory Fridman

The effects of a multi-ingredient supplement on markers of muscle damage and inflammation following downhill running in females

The effects of a multi-ingredient performance supplement (MIPS) on markers of inflammation and muscle damage, perceived soreness and lower limb performance are unknown in endurance-trained female athletes. The...

Authors: Jessica L. Köhne, Michael J. Ormsbee and Andrew J. McKune

Exercise-induced stress behavior, gut-microbiota-brain axis and diet: a systematic review for athletes

Fatigue, mood disturbances, under performance and gastrointestinal distress are common among athletes during training and competition. The psychosocial and physical demands during intense exercise can initiate...

Authors: Allison Clark and Núria Mach

Training time frame, a possible key to literature discrepancy on fasting athletes

There is a discrepancy in the literature as to whether fasting during Ramadan affects athletic performance.

Authors: Navid Moghadam and Farzin Farahbakhsh

Effect of tart cherry juice on recovery and next day performance in well-trained Water Polo players

Tart Montmorency cherries contain high concentrations of phytochemicals and anthocyanins, which have recently been linked to improved athletic recovery and subsequent performance. To date however, previous wor...

Authors: Rachel McCormick, Peter Peeling, Martyn Binnie, Brian Dawson and Marc Sim