單次阻力運動對年輕肥胖男性動脈硬化指標的影響

Effect of Acute Resistance Exercise on Arterial Stiffness Indices in Obese Young Men

黃依婷(I-Ting Huang) ； 林慈芳(Tzu-Fang Lin) ； 戴旭志(Hsu-Chi Tai) ； 吳柏翰(Bo-Han Wu) ； 林正常(Jung-Charng Lin)

《大專體育學刊》 17卷1期 (2015/03) Pp. 96-107

https://doi.org/10.5297/ser.1701.009

摘要

本研究旨在探討單次阻力運動對年輕肥胖男性的動脈硬化相關指標的影響。本研究招募20名大學健康男生為受試者，將身體質量指數≥27者分派至肥胖組（n=10），身體質量指數＜24者分派至對照組（n=10）。實驗開始前，所有受試者皆進行心踝血管指數（cardio-ankle vascular index, CAVI）、收縮壓（systolic blood pressure, SBP）、足踝上臂動脈血壓比（ankle-brachial index, ABI）、血漿一氧化氮濃度（plasma nitric oxide, NO）及最大肌力（one repetition maximum, 1 RM）之測量。隨後，進行單次中強度（6個動作，60% 1 RM，8次反覆，共進行3組）之阻力運動，並在運動後立即（P0）與運動後30分鐘（P30）測量動脈硬化相關指標（項目：CAVI, SBP, ABI, NO）。研究結果指出：肥胖組與對照組的SBP與CAVI值，在阻力運動後立即皆顯著降低，但在運動後30分鐘即恢復安靜水準。而肥胖組血漿NO濃度在阻力運動後30分鐘顯著高於對照組。此外，兩組的ABI在運動前後並無顯著差異。本研究結論：本研究發現單次中強度阻力運動對年輕肥胖男性之動脈硬化指標並無負面影響，並且可增加血液中NO濃度，進而調節血管平滑肌舒張的功能。

關鍵字

心－踝血管指數 ； 足踝上臂動脈血壓比 ； 一氧化氮 ； 血管內皮功能

並列摘要

This study aimed to investigate the effect of acute resistance exercise on arterial stiffness related indices in obese young males. Twenty young college students were recruited for this study, and divided into obesity (BMI ≥ 27, n = 10) and control (BMI ＜ 24, n = 10) groups. Cardio-ankle vascular index (CAVI), systolic arterial pressure (SBP), ankle-brachial index (ABI), plasma nitric oxide (NO) and one repetition maximal test (1 RM) were measured prior to the experiment. On the day of experiment, all subjects performed an acute bout of moderate resistance exercise (6 sessions, 60% 1 RM, 8 repetitions for 3 sets), and then arterial stiffness variables, including CAVI, SBP, ABI and NO were measured immediately (P0) and 30 minutes after (post, P30) resistance exercise. Results indicated that CAVI of both groups were significantly decreased at P0 compared to pre-exercise, but returned to base level at P30. Plasma NO level in obesity group was significantly higher than that of control group, and significantly increased at P30. In addition, there were no significant differences of ABI between preand post-exercise in both groups. The results suggest that an acute bout of resistance exercise was unable to raise the arterial stiffness levels in obese young males, but increased the NO concentrations to promote the function of vascular endothelial cell.

並列關鍵字

cardio-ankle vascular index ； ankle-brachial index ； nitric oxide ； endothelial function

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