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논문 기본 정보

자료유형
학술저널
저자정보
Yongsuk Seo (Kent State University) Jung-Hyun Kim (Kyung Hee University)
저널정보
한국생활환경학회 한국생활환경학회지 한국생활환경학회지 제27권 제6호
발행연도
2020.12
수록면
787 - 795 (9page)
DOI
10.21086/ksles.2020.12.27.6.787

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초록· 키워드

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The purpose of this study was to assess the effects of hyperthermia on isometric handgrip strength and endurance. Twelve healthy men completed two experimental trials: active hyperthermia (AH) involving treadmill exercise at 60% VO2max or passive hyperthermia (PH) via water garment until their rectal temperature (Tre) increased 1.5°C in ambient heat (35°C, 50%). Isometric handgrip strength and endurance were assessed on the dominant arm using a handheld dynamometer for maximal voluntary contraction (MVC), dynamic endurance (MVC10), and static endurance (MVC75%) immediately before and after hyperthermia. Exposure time to PH was significantly longer than AH, leading to a higher level of dehydration (AH: 0.9±0.1, PH: 1.4±0.3 kg) and forearm muscle temperature in PH (AH: 35.7±0.8, PH: 38.3±0.5°C) (p < 0.001). MVC did not change within or between the conditions. MVC10 was significantly impaired only in PH compared to AH (p=0.001) whereas MVC75% was significantly impaired at a similar degree in AH and PH (p<0.001). The study findings suggest that sustained force production ability is impaired following either mode of hyperthermia, whereas MVC remained unaffected. Together with hyperthermia-induced central fatigue, dehydration and high muscle temperature also appeared to influence handgrip strength and endurance.

목차

Abstract
1. Introduction
2. Methods
3. Results
4. Discussion
5. Conclusion
REFERENCES

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