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    RISS 인기검색어

      Sweating responses to isometric hand‐grip exercise and forearm muscle metaboreflex in prepubertal children and elderly

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      https://www.riss.kr/link?id=O120798363

      • 저자
      • 발행기관
      • 학술지명
      • 권호사항
      • 발행연도

        2017년

      • 작성언어

        -

      • Print ISSN

        0958-0670

      • Online ISSN

        1469-445X

      • 등재정보

        SCI;SCIE;SCOPUS

      • 자료형태

        학술저널

      • 수록면

        214-227   [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]

      • 구독기관
        • 전북대학교 중앙도서관  
        • 성균관대학교 중앙학술정보관  
        • 부산대학교 중앙도서관  
        • 전남대학교 중앙도서관  
        • 제주대학교 중앙도서관  
        • 중앙대학교 서울캠퍼스 중앙도서관  
        • 인천대학교 학산도서관  
        • 숙명여자대학교 중앙도서관  
        • 서강대학교 로욜라중앙도서관  
        • 계명대학교 동산도서관  
        • 충남대학교 중앙도서관  
        • 한양대학교 백남학술정보관  
        • 이화여자대학교 중앙도서관  
        • 고려대학교 도서관  
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      다국어 초록 (Multilingual Abstract)

      What is the central question of this study? Non‐thermal factors (e.g. muscle metaboreflex) contribute to the sweating response during exercise. Although it is well recognized that the sweating responses caused by core temperature elevation in prepub...

      What is the central question of this study?
      Non‐thermal factors (e.g. muscle metaboreflex) contribute to the sweating response during exercise. Although it is well recognized that the sweating responses caused by core temperature elevation in prepubertal children and the elderly are attenuated compared with young adults, it is unknown whether non‐thermal sweating is also attenuated in these populations.

      What is the main finding and its importance?
      The non‐thermal sweating response during isometric hand‐grip exercise and isolated muscle metaboreflex were attenuated in prepubertal children compared with young adults in a non‐uniform manner over the body, but only during the muscle metaboreflex in the elderly. This may explain the maturation‐ and ageing‐related decline of sweating during exercise.


      What is the central question of this study?
      Non‐thermal factors (e.g. muscle metaboreflex) contribute to the sweating response during exercise. Although it is well recognized that the sweating responses caused by core temperature elevation in prepubertal children and the elderly are attenuated compared with young adults, it is unknown whether non‐thermal sweating is also attenuated in these populations.
      What is the main finding and its importance?
      The non‐thermal sweating response during isometric hand‐grip exercise and isolated muscle metaboreflex were attenuated in prepubertal children compared with young adults in a non‐uniform manner over the body, but only during the muscle metaboreflex in the elderly. This may explain the maturation‐ and ageing‐related decline of sweating during exercise.
      The purpose of the present study was to investigate sweating responses to isometric hand‐grip (IH) exercise and muscle metaboreflex in prepubertal children and the elderly. In hot conditions (ambient temperature, 35°C; relative humidity, 45%), 13 healthy young adults, 10 prepubertal children and 10 elderly subjects (aged 20.4 ± 1.2, 11.4 ± 0.5 and 63.5 ± 3.1 years, respectively) repeated a three hand‐grip exercise protocol that consisted of 1 min IH exercise at 15, 30 or 45% of maximal voluntary contraction (MVC) followed by 2 min postexercise forearm occlusion. Local sweat rates (SRs) on the forehead, chest, forearm, thigh and palm were continuously measured (ventilated capsule method). The forehead SR in prepubertal children during IH exercise at 45% MVC was significantly lower than that of young adults (0.26 ± 0.22 and 0.08 ± 0.15 mg cm−2 min−1 for young adults and children, respectively; P < 0.05) but not of the elderly at any exercise intensities. The SR on the chest (0.22 ± 0.22 and −0.01 ± 0.05 mg cm−2 min−1 for young adults and children, respectively), forearm (0.14 ± 0.12 and 0.03 ± 0.04 mg cm−2 min−1) and thigh (0.13 ± 0.10 and 0.02 ± 0.03 mg cm−2 min−1) during postexercise occlusion at 45% MVC was significantly lower in children than in young adults (P < 0.05). Elderly subjects showed a significantly lower SR on the forearm (0.04 ± 0.04 and 0.01 ± 0.02 mg cm−2 min−1 for young adults and elderly, respectively) and thigh (0.07 ± 0.07 and 0.01 ± 0.03 mg cm−2 min−1) at 15% MVC and on the thigh at 45% MVC (0.13 ± 0.10 and 0.04 ± 0.04 mg cm−2 min−1) during postexercise occlusion compared with young adults (P < 0.05). These results suggest that sweating responses to IH exercise and muscle metaboreflex were underdeveloped in prepubertal children and that ageing attenuates the response to the muscle metaboreflex in a way that is not consistent across the body.

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