School of Sport and Exercise Sciences, Loughborough University, Leicestershire, UK.
Int J Sport Nutr Exerc Metab. 2009 Dec;19(6):569-82. doi: 10.1123/ijsnem.19.6.569.
The current study investigated the acute effects of accumulating short bouts of running on circulating concentrations of postprandial triacylglycerol (TAG) and C-reactive protein (CRP). Ten men, age 21-32 yr, completed two 1-d trials. On 1 occasion participants ran at 70% of maximum oxygen uptake in six 5-min bouts (i.e., 8:30, 10, and 11:30 a.m. and 1, 2:30, and 4 p.m.) with 85 min rest between runs. On another occasion participants rested throughout the day. In both trials, participants consumed test meals at 9 a.m. and 12 p.m. In each trial, venous blood samples were collected at 8:30, 10, and 11:30 a.m. and 1, 2:30, 4, and 5:30 p.m. for plasma TAG measurement and at 8:30 a.m. and 5:30 p.m. for serum CRP measurement. Total area under the curve for plasma TAG concentration versus time was 10% lower on the exercise trial than the control trial (M +/- SEM: 13.5 +/- 1.8 vs. 15.0 +/- 1.9 mmol x 9 hr(-1) x L(-1); p = .004). Serum CRP concentrations did not differ between trials or over time. This study demonstrates that accumulating short bouts of running reduces postprandial plasma TAG concentrations (a marker for cardiovascular disease risk) but does not alter serum CRP concentrations.
本研究旨在探讨短时间、多次累积跑步对餐后三酰甘油（TAG）和 C 反应蛋白（CRP）循环浓度的急性影响。10 名年龄在 21-32 岁的男性参与者完成了两次 1 天试验。在其中一次试验中，参与者以 70%最大摄氧量在 6 个 5 分钟的回合中跑步（即上午 8:30、10:00 和 11:30 以及下午 1:00、2:30 和 4:00），两次跑步之间休息 85 分钟。在另一次试验中，参与者全天休息。在两次试验中，参与者分别在上午 9 点和 12 点进食测试餐。在每次试验中，分别在上午 8:30、10:00 和 11:30 以及下午 1:00、2:30、4:00 和 5:30 点采集静脉血样，用于测量血浆 TAG 浓度，并在上午 8:30 和下午 5:30 点采集血清 CRP 浓度。与对照试验相比，运动试验中血浆 TAG 浓度的总曲线下面积降低了 10%（M +/- SEM：13.5 +/- 1.8 对 15.0 +/- 1.9 mmol x 9 hr(-1) x L(-1)；p =.004）。两次试验或随时间推移，血清 CRP 浓度均无差异。本研究表明，短时间、多次累积跑步可降低餐后血浆 TAG 浓度（心血管疾病风险的标志物），但不会改变血清 CRP 浓度。
