Salivary Cortisol Responses and Session Ratings of Perceived Exertion to a Rugby Match and Fatigue Test

Júnior, P.C. Caetano; Castilho, Maiara L.; Raniero, Leandro

doi:10.1177/0031512517704340

Cited by 13 publications

(8 citation statements)

References 32 publications

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“…Despite the high intensity reported and significant duration of the games, no differences were observed between pre- and post-cortisol concentrations for the whole group. These results do not agree with other studies in basketball, 11,26 rugby, 27 tennis, 10,28 and judo competitions 29,30 which state that increases in cortisol can be explained by the increase in the physiological demands of the competition measured through RPE 3,11,31 or HR. 3…”

Section: Discussioncontrasting

confidence: 94%

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Does the type of disability influence salivary cortisol concentrations of athletes in official wheelchair basketball games?

Seron

Carvalho

Modesto

et al. 2019

International Journal of Sports Science & Coaching

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The objective of this work is to describe and compare the behavior of cortisol in official wheelchair basketball matches according to the type of disability. This is a cross-sectional study in which 34 elite wheelchair basketball athletes were divided into three groups, based on disability (spinal cord injury, poliomyelitis, and amputation). Cortisol concentration (baseline, pre-, and post-game) and heart rate were analyzed in five official games. Heart rate data were stratified according to the Edwards method. Significant differences were observed in pre- and post-cortisol concentrations only for the amputated group. No significant correlations were found between cortisol variation and intensity ranges. Athletes with neurological damage were not responsive to wheelchair basketball in relation to salivary cortisol concentrations. The game intensity cannot be verified by the biomarker cortisol for all types of disabilities. It is necessary to pay attention to the energy availability for athletes with neurological injuries during the game and post-game recovery.

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Section: Discussioncontrasting

confidence: 94%

“…Similar behavior has been observed in rugby athletes without disability; Caetano-Júnior et al. 27 reported reductions in cortisol concentrations in two athletes and Lindsay et al. 37 found different magnitudes of increased cortisol concentrations.…”

Section: Discussionsupporting

confidence: 61%

Does the type of disability influence salivary cortisol concentrations of athletes in official wheelchair basketball games?

Seron

Carvalho

Modesto

et al. 2019

International Journal of Sports Science & Coaching

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“…It was also demonstrated that decreases in the blood glucose concentration trigger the pituitary-adrenocortical axis to enhance secretion of ACTH and cortisol during prolonged exercise in humans [ 7 , 8 ]. Moreover, there were significant correlations between the cortisol response and the sense of fatigue during stressful exercise [ 9 , 10 ]. These reports point out that cortisol is released in response to glycogen depletion or reduced blood glucose levels to maintain the blood glucose level, delaying fatigue.…”

Section: Introductionmentioning

confidence: 99%

Acute supplementation with an amino acid mixture suppressed the exercise-induced cortisol response in recreationally active healthy volunteers: a randomized, double-blinded, placebo-controlled crossover study

Tsuda

Murakami

Yamaguchi

et al. 2020

Journal of the International Society of Sports Nutrition

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Background Few studies have demonstrated the suppressive effects of amino acids (AAs) on the level of cortisol during exercise in humans. We hypothesized that an AA mixture containing arginine, which promotes lipid metabolism, valine, which effectively decreases the level of glucocorticoid, and serine, a substrate in the production of phosphatidylserine that is reported to blunt increases in cortisol, would suppress the exercise-induced cortisol response by combining the positive effects of the AAs synergistically. Methods A randomized, double-blinded, placebo-controlled crossover trial was conducted. Twenty healthy recreationally active males ingested either an AA mixture containing 1.8 g of arginine, 1.1 g of valine, and 0.1 g of serine or a placebo. Thirty minutes after ingestion, subjects performed an exercise trial on a cycle ergometer for 80 min at 50% maximal oxygen consumption. Plasma cortisol and other blood parameters immediately before and after the exercise were evaluated. Results Plasma cortisol concentrations after exercise were significantly higher than those before exercise in the placebo condition (9.51 ± 0.85 vs 14.39 ± 2.15, p < 0.05), while there was no significant difference in the AA condition (9.71 ± 0.93 vs 9.99 ± 1.23, p = 0.846). In addition, the increase in plasma cortisol before and after exercise was significantly lower in the AA condition than in the placebo condition (0.28 [− 2.75, 3.31] vs 4.87 [0.89, 8.86], p < 0.05). For the level of adrenocorticotropin, there was a significant difference between before and after exercise only in the placebo condition (24.21 ± 2.91 vs 53.17 ± 6.97, p < 0.01) but not in the AA condition (27.33 ± 3.60 vs 46.92 ± 10.41, p = 0.057). Blood glucose, plasma lactate, plasma ammonia, serum creatine phosphokinase, serum total ketone body, and serum free fatty acid were also significantly changed by the exercise load in both conditions, but no significant differences were observed between the two conditions. Conclusions The present study demonstrated that the AA mixture suppressed the cortisol response during exercise without affecting exercise-related biological parameters such as glucose or lipid metabolism. Trial registration UMIN Clinical Trials Registry, UMIN000023587 . Registered 19 August 2016.

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“…It was demonstrated that prolonged exercise induced a decrease in blood glucose, which caused an increase in the sense of fatigue [1] and that carbohydrate supplementation postponed fatigue during exercise by maintaining blood glucose levels [2,3]. One of the glucocorticoid hormones, cortisol, which quickly increases during exercise [4,5], was reported to significantly correlate with the feeling of fatigue during exercise [6,7]. It was also reported that ammonia, which is produced by accelerating the catabolism of muscle proteins when energy is depleted during prolonged exercise, led to the feeling of fatigue through neurotoxic effects [8,9].…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of Arginine, Valine, and Serine on Exercise-Induced Fatigue in Healthy Volunteers: A Randomized, Double-Blinded, Placebo-Controlled Crossover Study

et al. 2019

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Although several kinds of amino acids (AAs) are known to affect physiological actions during exercise, little is known about the combined effects of a mixture of several AAs on fatigue during exercise. The aim of the present study was to investigate the effect of an AA mixture supplement containing arginine, valine, and serine on exercise-induced fatigue in healthy volunteers. These AAs were selected because they were expected to reduce fatigue during exercise by acting the positive effects synergistically. A randomized, double-blinded, placebo-controlled crossover trial was conducted. Thirty-nine males ingested an AA mixture containing 3600 mg of arginine, 2200 mg of valine, and 200 mg of serine or a placebo each day for 14 days. On the 14th day, the participants completed an exercise trial on a cycle ergometer at 50% of VO2max for 120 min. After the two-week washout period, the participants repeated the same trial with the other test sample. The participant’s feeling of fatigue based on a visual analog scale (VAS) and a rating of perceived exertion (RPE), as well as blood and physical parameters were evaluated. The feeling of fatigue based on VAS and RPE were significantly improved in AA compared to those in placebo. In the blood analysis, the increase in serum total ketone bodies during exercise and plasma tryptophan/branched-chain amino acids were significantly lower in AA than those in placebo. The present study demonstrated that supplementation with an AA mixture containing arginine, valine, and serine reduced the feeling of fatigue during exercise. The AA mixture also changed several blood parameters, which may contribute to the anti-fatigue effect.

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Salivary Cortisol Responses and Session Ratings of Perceived Exertion to a Rugby Match and Fatigue Test

Cited by 13 publications

References 32 publications

Does the type of disability influence salivary cortisol concentrations of athletes in official wheelchair basketball games?

Does the type of disability influence salivary cortisol concentrations of athletes in official wheelchair basketball games?

Acute supplementation with an amino acid mixture suppressed the exercise-induced cortisol response in recreationally active healthy volunteers: a randomized, double-blinded, placebo-controlled crossover study

Combined Effect of Arginine, Valine, and Serine on Exercise-Induced Fatigue in Healthy Volunteers: A Randomized, Double-Blinded, Placebo-Controlled Crossover Study

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