Harris Ann M, Macbride Leslie R, Foster Randal C, McCrady Shelly K, Levine James A
Endocrine Research Unit, Mayo Clinic, Rochester, Minnesota, 55905.
J Therm Biol. 2006 Dec;31(8):634-638. doi: 10.1016/j.jtherbio.2006.08.007.
We wanted to examine if spontaneous physical activity contributes to non-shivering thermogenesis. Ten lean, healthy male subjects wore a physical activity, micro-measurement system whilst the room temperature was randomly altered at two hourly intervals between thermoneutral (72°F), cool (62°F) and warm (82°F) temperatures. Physical activity measured during the thermoneutral, cooling and warming periods was not significantly different. Cooling, increased EE above basal and thermoneutral values 2061 ± 344 kcal/day (p <0.01). Thus, the increase in energy expenditure associated with short-term environmental cooling in lean, healthy males does not appear to be due to increased spontaneous physical activity or fidgeting.
我们想要研究自发身体活动是否有助于非寒战产热。十名体型偏瘦的健康男性受试者佩戴了一个身体活动微量测量系统，同时室温以两小时为间隔在热中性温度（72°F）、凉爽温度（62°F）和温暖温度（82°F）之间随机变化。在热中性、降温及升温期间测量的身体活动并无显著差异。降温使能量消耗比基础值和热中性值增加了2061±344千卡/天（p<0.01）。因此，体型偏瘦的健康男性在短期环境降温时能量消耗的增加似乎并非由于自发身体活动或坐立不安的增加。
