Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.
Int J Sports Med. 2013 Jan;34(1):21-7. doi: 10.1055/s-0032-1321897. Epub 2012 Aug 15.
Long periods of sedentary behaviour may adversely affect health irrespective of overall physical activity levels. This study compared the effects of sitting, standing and walking on postprandial lipaemia in healthy normolipidaemic Japanese men. 15 participants, aged 26.8±2.0 years (mean±SD), completed 3, 2-day trials in a random order: 1) sitting (control), 2) standing, and 3) walking. On day 1 of the sitting trial, participants rested. On day 1 of the standing trial, participants stood for six, 45-min periods. On day 1 of the walking trial, participants walked briskly for 30 min at approximately 60% of maximum heart rate. On day 2 of each trial, participants rested and consumed test meals for breakfast and lunch. Venous blood samples were collected in the morning and afternoon on day 1, and in the fasted state (0 h) and at 2, 4 and 6 h postprandially on day 2. On day 2 area under the serum triacylglycerol concentration vs. time curve was 18% lower on the walking trial than the sitting and standing trials (1-factor ANOVA, P=0.015). Hence postprandial lipaemia was not reduced after standing but was reduced after low-volume walking compared with sitting in healthy normolipidaemic Japanese men.
长时间的久坐行为可能会对健康产生不利影响，而与总体身体活动水平无关。本研究比较了坐着、站着和行走对健康的日本正常血脂男性餐后血脂的影响。15 名参与者，年龄 26.8±2.0 岁（均值±标准差），以随机顺序完成了 3 次为期 2 天的试验：1）坐着（对照），2）站立，和 3）行走。在坐着试验的第 1 天，参与者休息。在站立试验的第 1 天，参与者站立 6 个 45 分钟的时间段。在行走试验的第 1 天，参与者以大约 60%的最大心率快步走 30 分钟。在每个试验的第 2 天，参与者休息并在早餐和午餐时摄入测试餐。在第 1 天的早晨和下午以及第 2 天的空腹（0 小时）以及餐后 2、4 和 6 小时采集静脉血样。在第 2 天，血清三酰甘油浓度与时间曲线下面积在行走试验中比在坐立和站立试验中低 18%（单因素方差分析，P=0.015）。因此，与坐姿相比，站立后餐后血脂没有降低，但与坐姿相比，低容量行走后餐后血脂降低。
