Abstract：
A single bout of cycling or running performed in the evening can reduce postprandial lipaemia (PPL) the following morning, although this is currently unknown for upper-body exercise. The aim of this study was to determine if a bout of arm-crank exercise (high-intensity interval [HIIE] or moderate-intensity continuous [MICE]), can attenuate PPL in noninjured individuals. Eleven healthy and recreationally active participants (eight males, three females; age: 27 ± 7 years; body mass index: 23.5 ± 2.5 kg·m-2) volunteered to participate in three trials: HIIE (10 × 60 s at 80% peak power output), MICE (50% peak power output of isocaloric duration), and a no-exercise control condition. Each exercise bout was performed at 18:00, and participants consumed a standardised evening meal at 20:00. Following an overnight fast, a 5-h mixed-macronutrient tolerance test was performed at 08:00. There were no significant differences in triglyceride incremental area under the curve between HIIE (192 ± 94 mmol·L-1 per 300 min), MICE (184 ± 111 mmol·L-1 per 300 min), and the no-exercise condition (175 ± 90 mmol·L-1 per 300 min) (P = 0.46). There were no significant differences in incremental area under the curve for glucose (P = 0.91) or insulin (P = 0.59) between conditions. Upper-body MICE and HIIE performed in the evening do not influence PPL the following morning, in normotriglyceridemic individuals. Clinical Trials Registration: NCT04277091. Novelty: Arm-crank exercise has no effect on PPL when performed the evening prior to a mixed-macronutrient meal test. Upper-body sprint interval exercise should be investigated as a potential solution to reduce PPL.
摘要：
在晚上进行一次骑自行车或跑步可以减少第二天早上的餐后血脂（PPL），尽管目前上半身运动尚不清楚。这项研究的目的是确定是否进行了手臂曲柄运动（高强度间隔[HIIE]或中等强度连续[MICE]），可以减弱未受伤个体的PPL。11名健康且从事娱乐活动的参与者(8名男性，3名女性；年龄：27±7岁；体重指数：23.5±2.5kg·m-2）自愿参加三项试验：HIIE（80％峰值功率输出为10×60s），MICE（等热持续时间的50％峰值功率输出），和无运动控制条件。每次锻炼都在18:00进行，参与者在20:00吃了标准化的晚餐。经过一夜的禁食，在08:00进行了5小时的混合常量营养素耐受性测试.HIIE之间的甘油三酯增量曲线下面积没有显着差异（每300分钟192±94mmol·L-1），MICE（每300分钟184±111mmol·L-1），和无运动条件（每300分钟175±90mmol·L-1）（P=0.46）。两种条件之间的葡萄糖（P=0.91）或胰岛素（P=0.59）的曲线下面积增量没有显着差异。晚上进行的上身MICE和HIIE不会影响第二天早上的PPL，在甘油三酯正常的个体中。临床试验注册：NCT04277091。新颖性：在混合常量营养素餐测试之前的晚上进行手臂曲柄运动对PPL没有影响。上身冲刺间隔运动应作为减少PPL的潜在解决方案进行研究。
