Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
Med Sci Sports Exerc. 2011 Sep;43(9):1744-51. doi: 10.1249/MSS.0b013e3182148a7e.
An active lifestyle is widely recognized as having a beneficial effect on cardiovascular health. However, no clear consensus exists as to whether exercise training increases overall physical activity energy expenditure (PAEE) or whether individuals participating in regular exercise compensate by reducing their off-exercise physical activity. The purpose of this study was to evaluate changes in PAEE in response to aerobic training (AT), resistance training (RT), or combined aerobic and resistance training (AT/RT).
Data are from 82 participants in the Studies of Targeted Risk Reduction Interventions through Defined Exercise-Aerobic Training versus Resistance Training study, a randomized trial of overweight (body mass index = 25-35 kg·m(-2)) adults, in which participants were randomized to receive 8 months of AT, RT, or AT/RT. All subjects completed a 4-month control period before randomization. PAEE was measured using triaxial RT3 accelerometers, which subjects wore for a 5- to 7-d period before and after the exercise intervention. Data reduction was performed with a previously published computer-based algorithm.
There was no significant change in off-exercise PAEE in any of the exercise training groups. We observed a significant increase in total PAEE that included the exercise training, in both AT and AT/RT but not in RT.
Eight months of exercise training was not associated with a compensatory reduction in off-exercise physical activity, regardless of exercise modality. The absence of compensation is particularly notable for AT/RT subjects, who performed a larger volume of exercise than did AT or RT subjects. We believe that the extended duration of our exercise training program was the key factor in allowing subjects to reach a new steady-state level of physical activity within their daily lives.
积极的生活方式被广泛认为对心血管健康有益。然而，对于运动训练是否会增加总体体力活动能量消耗（PAEE），或者经常参加运动的个体是否会通过减少非运动体力活动来进行补偿，目前尚无明确共识。本研究旨在评估有氧运动训练（AT）、抗阻训练（RT）或有氧和抗阻联合训练（AT/RT）对 PAEE 的影响。
数据来自 Studies of Targeted Risk Reduction Interventions through Defined Exercise-Aerobic Training versus Resistance Training 研究中的 82 名参与者，该研究是一项针对超重（体重指数 = 25-35kg·m(-2))成年人的随机试验，参与者被随机分配接受 8 个月的 AT、RT 或 AT/RT。所有受试者在随机分组前都完成了 4 个月的对照期。PAEE 使用三轴 RT3 加速度计测量，受试者在运动干预前后佩戴 5-7 天。使用先前发表的基于计算机的算法进行数据缩减。
在任何运动训练组中，非运动 PAEE 均无显著变化。我们观察到 AT 和 AT/RT 中总 PAEE 包括运动训练在内均显著增加，但 RT 中没有增加。
无论运动方式如何，8 个月的运动训练均与非运动体力活动的补偿性减少无关。AT/RT 受试者没有补偿，这尤其值得注意，因为他们比 AT 或 RT 受试者进行了更大的运动量。我们认为，我们的运动训练计划延长了时间，是受试者在日常生活中达到新的稳定体力活动水平的关键因素。
