Waseda University, Faculty of Sport Sciences, Tokorozawa, Japan.
Int J Sports Med. 2011 Nov;32(11):829-34. doi: 10.1055/s-0031-1279770. Epub 2011 Sep 29.
Physical activity-induced lowering of postprandial lipaemia is short-lived. However, little is known regarding the role of physical activity status on postprandial lipaemia. The purpose of the present study was to compare postprandial triacylglycerol concentrations in active and inactive older adults. A total of 26 older adults (aged 69.8±0.9 years, mean±SEM; 10 male and 16 female) were analysed in a cross-sectional design. Based on accelerometer data, participants were divided into either the active group (≥150 min/week of moderate-intensity physical activity, N=15) or the inactive group (<150 min/week of moderate-intensity physical activity, N=11). After a 48-h period of physical activity avoidance and a 10-h overnight fast, participants consumed a test meal of moderate fat content (35%). Capillary blood samples were collected in the fasted state and at 2, 4, and 6 h postprandially. After adjusting for fasting triacylglycerol concentrations, body mass, body mass index and waist circumference, postprandial capillary triacylglycerol concentrations were significantly lower in the active than inactive group ( P=0.046). These findings demonstrate that regular physical activity lowers postprandial lipaemia independent of the acute effects of physical activity in older adults.
身体活动引起的餐后血脂降低是短暂的。然而，对于身体活动状态对餐后血脂的影响知之甚少。本研究的目的是比较活跃和不活跃的老年人餐后三酰甘油浓度。在一项横断面设计中，对 26 名年龄在 69.8±0.9 岁（平均值±SEM；10 名男性和 16 名女性）的老年人进行了分析。根据加速度计数据，参与者被分为活跃组（≥150 分钟/周的中等强度体力活动，N=15）或不活跃组（每周中等强度体力活动<150 分钟，N=11）。在避免 48 小时的身体活动和 10 小时的夜间禁食后，参与者摄入了中等脂肪含量（35%）的测试餐。在禁食状态和餐后 2、4 和 6 小时采集毛细血管血样。在校正空腹三酰甘油浓度、体重、体重指数和腰围后，活跃组的餐后毛细血管三酰甘油浓度明显低于不活跃组（P=0.046）。这些发现表明，定期的身体活动可降低餐后血脂，与老年人身体活动的急性影响无关。
