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Publishing type：Research paper (bulletin of university, research institution)  

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Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Routledge  

Recent studies have shown the contribution of genetic determinants to athletes’ physical ability. However, despite the fact that cognitive abilities like self-control and stress-tolerance influence athletes’ competitive performance, few studies to date have investigated the association between genetic polymorphism, which is linked to cognitive ability and athletic performance. The present study investigated the link between single-nucleotide polymorphisms (SNPs), which are known to exert influences on dopaminergic neural function and competitive performance of swimmers. The results have revealed superior competitive performance in competitive swimmers with Met allele of catechol-O-methyltransferase Val158Met polymorphism than those with Val/Val genotype. The investigated SNPs of DRD2 and DRD3 were not associated with swimmer’s competitive performance. This finding indicates that genetic polymorphism linked to cognitive ability influences the athletes’ performance.

DOI： 10.1080/02640414.2017.1309058

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Language：Japanese   Publisher：国士舘大学体育学部附属体育研究所  

CiNii Books

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Language：Japanese   Publisher：国士舘大学体育学部附属体育研究所  

【Purpose】The purpose of this study was to determine changes in salivary cortisol and testosterone levels when athletes swam at peak performance. Salivary cortisol reflects mental and physical stress, but testosterone reflects only physical stress. Performance requirements were gradually increased until athletes reached their peak performance. A correlation between cortisol and testosterone levels and a correlation between cortisol levels in blood and testosterone levels in saliva have already been demonstrated. Only a medical professional can draw blood, but coaches can sample saliva, so salivary hormone levels can readily be measured. Cortisol and testosterone levels in saliva are reported to fluctuate as a result of stress. Thus, this study examined whether salivary cortisol and testosterone levels are an effective index for physical training.【Methods】Subjects were 14 male swimmers who were university students. All of the subjects had successfully participated in student swimming competitions in Japan. Subjects swam freestyle for 200 m. Subjects swam 4 times (best time +40 seconds, +30 seconds, +20 seconds, and maximal effort) and were given a rest time of 15 minutes betw

CiNii Books

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Event date： 2022.6 　 　

Presentation type：Poster presentation  

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