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논문 기본 정보

자료유형
학술저널
저자정보
김광일 (경희대학교) 최현민 (경희대학교) 김찬호 (경희대학교) 노호성 (경희대학교) 김종경 (경희대학교)
저널정보
한국체육과학회 한국체육과학회지 한국체육과학회지 제20권 제5호 (자연과학편)
발행연도
2011.10
수록면
911 - 918 (8page)

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연구주제
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초록· 키워드

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Previous studies have demonstrated that obesity alters autonomic functions. Muscle metaboreflex (MMR) evoked excessive blood pressure response in obese adults. However, there is no information about the MMR control in obese children during exercise. The aim of this study was to examine the effects of MMR on pressor response in Korean obese children. Twelve obese children (OC), and Twelve non-obese children group (NOC) participated in this study. The maximum voluntary contraction (MVC) was obtained using a handgrip strength device. Each subject performed handgrip static exercise (SE) at 50% of MVC for 3 mins followed by 2 mins of post exercise muscular ischemia (PEMI) by inflating a cuffs on the upper arm to 200 mmHg. Mean arterial blood pressure (MAP), heart rate (HR), stroke volume (SV), cardiac output (CO), and total vascular conductances (TVC) were continuously obtained from rest through SE and PEMI.. From resting baseline values, MAP was significantly increased in both groups, however, the increase in MAP was significantly higher in OC compared to the NOC (24.4±2.4 vs. 20.6±3.0 mmHg; 21.3±3.0 vs. 11.5±1.4 mmHg) during SE and PEMI. The metaboreflex-induced CO responses were little increased in both groups, while there was no difference in CO between two groups. The TVC was significantly decreased in OC with little change in NOC.. This study indicates that obesity exaggerated the pressor response mediated by muscle metaboreflex activation in children and may help to explain the neural mechanism by where obese children display excessive blood pressure response during exercise and an prevalence of hypertension in adulthood.

목차

Abstract
Ⅰ. 서론
Ⅱ. 연구방법
Ⅲ. 결과
Ⅳ. 논의
Ⅴ. 결론
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UCI(KEPA) : I410-ECN-0101-2013-692-001072287