Department of Kinesiology, Michigan State University, East Lansing, MI 48824, USA.
Eur J Sport Sci. 2013;13(4):422-30. doi: 10.1080/17461391.2011.635707. Epub 2011 Dec 5.
Several studies have examined energy expenditure in various sports but there is a lack of research on the contribution of exercise and habitual activity during different training periods. This study examined changes in total daily energy expenditure (TDEE) and its components during high- and low-volume training periods. Further, changes in time spent in sedentary, light, moderate and vigorous activity in response to different training volumes were explored. Energy expenditure was measured in 15 male endurance athletes during 2 non-consecutive weeks - 1 week of high volume (>13 hours) training and another week of low volume (<7 hours) training. The SenseWear Pro 3 Armband, individual heart-rate-oxygen consumption regression and indirect calorimetry was used to measure non-exercise activity thermogensis (NEAT), exercise energy expenditure (EEE) and resting metabolic rate, respectively. Time spent at different intensities was assessed using previously established MET cutpoints. TDEE as well as EEE increased significantly with higher training volume, while no difference in NEAT occurred. Further, significantly less time was spent in sedentary activities during the high-volume week. These results suggest that highly trained athletes do not compensate for increased training volume and reduce sedentary activities to allow for more training time.
几项研究已经检查了各种运动中的能量消耗，但缺乏对不同训练期间运动和习惯性活动贡献的研究。本研究检查了高容量和低容量训练期间总日常能量消耗（TDEE）及其组成部分的变化。此外，还探讨了针对不同训练量，久坐、轻度、中度和剧烈活动时间的变化。在 2 周内（1 周高容量（>13 小时）训练和另 1 周低容量（<7 小时）训练），对 15 名男性耐力运动员进行了能量消耗测量。SenseWear Pro 3 臂带、个体心率-耗氧量回归和间接测热法分别用于测量非运动活动产热（NEAT）、运动能量消耗（EEE）和静息代谢率。使用先前建立的 MET 切点评估不同强度的时间。随着训练量的增加，TDEE 和 EEE 显著增加，而 NEAT 没有差异。此外，在高容量周，久坐活动的时间明显减少。这些结果表明，训练有素的运动员不会为了增加训练量而补偿，也不会减少久坐活动，以腾出更多的训练时间。
