A single versus multiple bouts of moderate-intensity exercise for fat metabolism
A single versus multiple bouts of moderate-intensity exercise for fat metabolism
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DOI：
10.1111/j.1475-097x.2010.01003.x
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发表时间：
2011-05-01
影响因子：
1.8
通讯作者：
Takamatsu, Kaoru
中科院分区：
文献类型：
--
作者：
Goto, Kazushige;Tanaka, Kiyoji;Takamatsu, Kaoru
本研究比较了相同强度（60%最大摄氧量）和总运动时间（30 min）的“一次30 min运动”和“三次10 min运动”的脂肪代谢。9名健康男性参与了三项试验：（1）单次30分钟的运动（单次），（2）三次10分钟的运动，间隔10分钟的休息（重复）和（3）休息（休息）。每次运动都是在最大摄氧量的60%下用自行车测力计进行的，然后休息180分钟。在单次和重复试验中，运动后血乳酸浓度显著升高（P < 0. 05），但在恢复期，单次试验显示出显著更高的值（P < 0. 05）。血浆甘油浓度的响应没有观察到显著差异。重复试验在运动过程中产生了较小的运动感知等级增加（P < 0，中心点01）。在运动过程中，在单次和重复试验之间没有观察到呼吸交换率（RER）的显著差异。然而，重复试验中恢复期的RER值显著低于单次试验和休息试验（P < 0中心点05），表明重复试验中脂肪氧化的相对贡献更高（P < 0中心点05）。这些结果表明，重复进行10分钟的适度运动，与单次30分钟的连续运动相比，可以导致更大的运动诱导的脂肪氧化。
P>This study compared the fat metabolism between 'a single bout of 30-min exercise' and 'three bouts of 10-min exercise' of the same intensity (60% maximal oxygen uptake) and total exercise duration (30 min). Nine healthy men participated in three trials: (1) a single 30-min bout of exercise (Single), (2) three 10-min bouts of exercise, separated by a 10-min rest (Repeated) and (3) rest (Rest). Each exercise was performed with a cycle ergometer at 60% of maximal oxygen uptake, followed by 180-min rest. Blood lactate concentration increased significantly after exercise in the Single and Repeated trials (P < 0 center dot 05), but the Single trial showed a significantly higher value during the recovery period (P < 0 center dot 05). No significant difference was observed in the responses of plasma glycerol concentration. The Repeated trial produced a smaller increase in the ratings of perceived exertion during the exercise (P < 0 center dot 01). During the exercise, no significant difference was observed in respiratory exchange ratio (RER) between the Single and Repeated trials. However, the RER values during the recovery period were significantly lower in the Repeated trial than in the Single and Rest trials (P < 0 center dot 05), indicating higher relative contribution of fat oxidation in the Repeated trial (P < 0 center dot 05). These results suggest that the repetition of 10-min of moderate exercise can contribute to greater exercise-induced fat oxidation compared with a single 30-min bout of continuous exercise.