Mestek Michael L, Garner John C, Plaisance Eric P, Taylor James Kyle, Alhassan Sofiya, Grandjean Peter W
Dept of Health & Human Performance, Auburn University, AL 36849, USA.
Int J Sport Nutr Exerc Metab. 2006 Jun;16(3):245-54. doi: 10.1123/ijsnem.16.3.245.
The purpose of this study was to compare blood lipid responses to continuous versus accumulated exercise. Nine participants completed the following conditions on separate occasions by treadmill walking/jogging at 70% of VO2max: 1) one 500-kcal session and 2) three 167 kcal sessions. Total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and triglycerides (TG) concentrations were measured from serum samples obtained 24 h prior to and 24 and 48 h after exercise. All blood lipid responses were analyzed in 2 (condition) x 3 (time) repeated measures ANOVAs. HDL-C increased by 7 mg/dL over baseline at 48 h post-exercise with three accumulated sessions versus 2 mg/dL with continuous exercise (P < 0.05). Triglyceride concentrations were unchanged in both conditions. These findings suggest that three smaller bouts accumulated on the same day may have a modestly greater effect for achieving transient increases in HDL-C compared to a continuous bout of similar caloric expenditure.
本研究的目的是比较持续运动与累积运动对血脂的影响。九名参与者在不同时间分别通过以最大摄氧量（VO2max）的70%进行跑步机步行/慢跑，完成以下条件：1）一次500千卡的运动时段和2）三次167千卡的运动时段。在运动前24小时以及运动后24小时和48小时采集的血清样本中测量总胆固醇（TC）、高密度脂蛋白胆固醇（HDL-C）和甘油三酯（TG）浓度。所有血脂反应均采用2（条件）×3（时间）重复测量方差分析进行分析。与持续运动相比，三次累积运动时段在运动后48小时时HDL-C比基线升高7mg/dL，而持续运动升高2mg/dL（P<0.05）。两种条件下甘油三酯浓度均未改变。这些发现表明，与相同热量消耗的持续运动相比，同一天累积的三次较短运动时段可能对实现HDL-C的短暂升高有适度更大的效果。
