單次低或中強度運動可增強低密度脂蛋白氧化抗性

Low or Moderate Intense Exercise Bout Increases the Resistance of LDL to Oxidation in Well-trained Exercisers

吳文惠(Wen-Huey Wu) ； 呂香珠(Hsiang-Chu Lu)

《中華民國營養學會雜誌》 24卷2期 (1999/05) Pp. 179-187

https://doi.org/10.6691/JCNS.199905_24(2).0004

摘要

為了解不同強度運動對低密度脂蛋白氧化性的影響，由大專羽球隊招募10名受試者，任選其中6名交叉進行低強度與中強度跑步運動各一次，中間間隔4天，每次消耗900大卡。於跑步前後10分鐘及跑步後11小時抽血。低強度運動後10分鐘及11小時，低密度脂蛋白體外氧化潛伏期均顯著比運動前長（分別增長69 & 65%）；中強度運動亦增長低密度脂蛋白氧化潛伏期，但幅度較少（分別增長30 & 27%），且僅有在11小時才與運動前有顯著差異。低密度脂蛋白氧化產生的Thiobarbituric acid reactive substances (TBARS)量不受運動影響。另4名為不運動控制組，於相當於運動組運動前及運動後11小時抽血，比較兩時間低密度脂蛋白氧化潛伏期及TBARS量，無顯著差異。本研究顯示低強度運動已足夠增進低密度脂蛋白氧化抗性，且此效果至少可持續至運動後11小時不減。

關鍵字

低密度脂蛋白氧化性 ； 運動

並列摘要

To investigate the effect of different intense exercise bout on the susceptibility of low density lipoprotein (LDL) to oxidation, 10 well-trained college students were recruited. 6 of them performed a randomized cross-over trial of low (35% VO2 max) and moderate (58% VO2 max) intense exercises, separated by 4 days, on a treadmill to expense 900 kcal. Venous blood was collected before, at 10 min, and 11 hr after the exercise. Low intense exercise significantly increased lag time for in vitro LDL oxidation at 10 min and 11 hr after exercise (69 & 65% increases, respectively). Moderate intense exercise also increased lag time at these two time points (30 & 27% increases, respectively) but significant difference was found only at 11 hr. The production of thiobarbituric acid reactive substances (TBARS) of oxidized LDL was not changed by exercises. The rest 4 volunteers were served as non-exercise control. Blood was withdrawn after overnight fasting and 3 hours after meal, and no significant difference was found in lag time or TBARS of LDL. The results indicate that a single low intense exercise bout is enough to increase resistance of LDL to oxidation and the effect can be remained at least 11 hr after exercise.

並列關鍵字

LDL oxidation ； exercise