Effect of acute L‐Alanyl‐L‐Glutamine and electrolyte ingestion on cognitive function and reaction time following endurance exercise

Pruna, Gabriel J.; Hoffman, Jay R.; Mccormack, William Patrick; Jajtner, Adam R.; Townsend, Jeremy R.; Bohner, Jonathan D.; Monica, Michael B. La; Wells, Adam J.; Stout, Jeffrey R.; Fragala, Maren S.; Fukuda, David H.

doi:10.1080/17461391.2014.969325

Cited by 15 publications

(6 citation statements)

References 30 publications

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“…For example, amateur soccer players who ingested 5 g of glutamine in a multi-ingredient supplement experienced attenuated perceived fatigue after a 90 min intermittent sprint test [18]. In addition, acute rehydration with an L-alanyl-L-glutamine drink improved reaction time after exhaustive treadmill running [50]. Similar to the current study, we recently reported that oral glutamine prior to, and after firefighting simulations increased HSP70, which aligned with lower subjective fatigue on the second day of physical work [51].…”

Section: Discussionmentioning

confidence: 99%

Oral Glutamine Supplement Reduces Subjective Fatigue Ratings during Repeated Bouts of Firefighting Simulations

Moore

Moriarty²,

Mermier³

et al. 2019

Safety

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Wildland firefighting requires repetitive (e.g., consecutive work shifts) physical work in dangerous conditions (e.g., heat and pollution). Workers commonly enter these environments in a nonacclimated state, leading to fatigue and heightened injury risk. Strategies to improve tolerance to these stressors are lacking. Purpose: To determine if glutamine ingestion prior to and after consecutive days of firefighting simulations in the heat attenuates subjective ratings of fatigue, and evaluate if results were supported by glutamine-induced upregulation of biological stress responses. Methods: Participants (5 male, 3 female) ingested glutamine (0.15 g/kg/day) or a placebo before and after two consecutive days (separated by 24 h) of firefighter simulations in a heated chamber (35 °C, 35% humidity). Perceived fatigue and biological stress were measured pre-, post-, and 4 h postexercise in each trial. Results: Subjective fatigue was reduced pre-exercise on Day 2 in the glutamine group (p < 0.05). Peripheral mononuclear cell expression of heat shock protein 70 (HSP70) and serum antioxidants were elevated at 4 h postexercise on Day 1 in the glutamine trial (p < 0.05). Conclusions: Ingestion of glutamine before and after repeated firefighter simulations in the heat resulted in reduced subjective fatigue on Day 2, which may be a result of the upregulation of biological stress systems (antioxidants, HSPs). This response may support recovery and improve work performance.

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Section: Discussionmentioning

confidence: 99%

Oral Glutamine Supplement Reduces Subjective Fatigue Ratings during Repeated Bouts of Firefighting Simulations

Moore

Moriarty²,

Mermier³

et al. 2019

Safety

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“…Two years later, the same research group reported that rehydration with L-alanyl-L-glutamine after 2.3% dehydration in a basketball scrimmage led to an improvement in basketball skill performance and visual reaction time when compared to water [ 525 ]. A 2016 study indicated that L-alanyl-L-glutamine maintained reaction time in an upper and lower-body activities after an exhaustive bout of treadmill running [ 526 ]. Finally, a 2015 paper determined that L-alanyl-L-glutamine significantly improved treadmill running performance when compared to no hydration [ 527 ].…”

Section: Introductionmentioning

confidence: 99%

ISSN exercise & sports nutrition review update: research & recommendations

Kerksick

Wilborn

Roberts

et al. 2018

Journal of the International Society of Sports Nutrition

653

741

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BackgroundSports nutrition is a constantly evolving field with hundreds of research papers published annually. In the year 2017 alone, 2082 articles were published under the key words ‘sport nutrition’. Consequently, staying current with the relevant literature is often difficult.MethodsThis paper is an ongoing update of the sports nutrition review article originally published as the lead paper to launch the Journal of the International Society of Sports Nutrition in 2004 and updated in 2010. It presents a well-referenced overview of the current state of the science related to optimization of training and performance enhancement through exercise training and nutrition. Notably, due to the accelerated pace and size at which the literature base in this research area grows, the topics discussed will focus on muscle hypertrophy and performance enhancement. As such, this paper provides an overview of: 1.) How ergogenic aids and dietary supplements are defined in terms of governmental regulation and oversight; 2.) How dietary supplements are legally regulated in the United States; 3.) How to evaluate the scientific merit of nutritional supplements; 4.) General nutritional strategies to optimize performance and enhance recovery; and, 5.) An overview of our current understanding of nutritional approaches to augment skeletal muscle hypertrophy and the potential ergogenic value of various dietary and supplemental approaches.ConclusionsThis updated review is to provide ISSN members and individuals interested in sports nutrition with information that can be implemented in educational, research or practical settings and serve as a foundational basis for determining the efficacy and safety of many common sport nutrition products and their ingredients.

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“…The shuffle reaction ball drill with a higher score showed a significant difference compared to the side shuffle drill. Shuffle reaction ball drill is an exercise to increase reaction time and dexterity skills by using a stimulus about the sense of response to seeing [5][6][7][8][9].…”

Section: Discussionmentioning

confidence: 99%