School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM.
Sport, Health and Performance Enhancement (SHAPE) Research Centre, Nottingham Trent University, Nottingham, UNITED KINGDOM.
Med Sci Sports Exerc. 2018 Nov;50(11):2351-2359. doi: 10.1249/MSS.0000000000001702.
Although laboratory-based moderate- to high-intensity exercise reduces postprandial lipemia in adolescents, this exercise differs to the free-living physical activities in which young people typically engage. This study compared the effect of free-living afterschool soccer activity and treadmill exercise on in-school postprandial lipemia in adolescent boys.
Fifteen boys (12.6 ± 0.5 yr) completed three, 2-d experimental trials. On day 1, participants rested (CON), exercised for 48 min on a treadmill at 60% V˙O2peak (TM), or played 48 min of 5-a-side soccer (SOC). On day 2, participants attended school where a capillary blood sample determined fasting triacylglycerol ([TAG]) and glucose ([glucose]) concentrations. Participants then consumed a standardized breakfast (0 h) and lunch (4.5 h), and blood samples were collected postprandially at 2.5, 5.0, and 7.0 h.
Reductions in fasting [TAG] were small-moderate after TM (-16%, 95% confidence interval [CI] = -27% to -2%, effect size [ES] = 0.46), but large after SOC (-30%, 95% CI = -40% to -20%, ES = 1.00) compared with CON; the concentration was also lower in SOC compared with TM (-18%, 95% CI = -29% to -5%, ES = 0.53). On the basis of ratios of geometric means, the area under the TAG versus time curve was 18% lower after TM (95% CI = -29% to -5%, ES = 0.51) and 25% lower after SOC (95% CI = -35% to -13%, ES = 0.76) compared with CON. By contrast, SOC and TM were not significantly different (-9%, 95% CI = -21% to 5%, ES = 0.25).
Compared with duration-matched inactivity (CON), after-school small-sided soccer (SOC) and treadmill exercise (TM) resulted in a similar, moderate reduction of postprandial lipemia in adolescent boys.
尽管基于实验室的中高强度运动可降低青少年的餐后血脂，但这种运动与年轻人通常参与的自由生活体育活动不同。本研究比较了自由生活课后足球活动和跑步机运动对青少年男孩在校内餐后血脂的影响。
15 名男孩（12.6±0.5 岁）完成了三项为期 2 天的实验试验。第 1 天，参与者休息（CON），在跑步机上以 60%最大摄氧量（V˙O2peak）运动 48 分钟（TM），或进行 48 分钟的 5 对 5 足球（SOC）。第 2 天，参与者在学校上课，采集毛细血管血样以确定空腹三酰甘油（[TAG]）和葡萄糖（[glucose]）浓度。然后，参与者在 0 小时时摄入标准化早餐，在 4.5 小时时摄入午餐，并在餐后 2.5、5.0 和 7.0 小时时采集血样。
与 CON 相比，TM 后空腹 [TAG] 降低幅度较小（-16%，95%置信区间[CI] = -27%至-2%，ES = 0.46），但 SOC 后降低幅度较大（-30%，95%CI = -40%至-20%，ES = 1.00）；与 TM 相比，SOC 时的浓度也较低（-18%，95%CI = -29%至-5%，ES = 0.53）。基于几何均数比值，TM 后 TAG 与时间曲线下面积降低 18%（95%CI = -29%至-5%，ES = 0.51），SOC 后降低 25%（95%CI = -35%至-13%，ES = 0.76），与 CON 相比。相比之下，SOC 和 TM 之间没有显著差异（-9%，95%CI = -21%至 5%，ES = 0.25）。
与匹配时间的不活动（CON）相比，课后小场地足球（SOC）和跑步机运动（TM）使青少年男孩的餐后血脂水平得到了相似的、适度的降低。
