Wouters-Adriaens Mirjam P E, Westerterp Klaas R
Department of Human Biology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands.
Br J Nutr. 2006 Jun;95(6):1166-70. doi: 10.1079/bjn20061784.
Recommendations for daily energy requirements use factorial calculations based on BMR. Expressing total energy requirements as a multiple of BMR is based on the assumption that BMR is equal to overnight metabolic rate (OMR). The objective of the present study was to determine if BMR is an appropriate proxy for OMR in children, young adults and elderly. Data are presented of thirty children (11 (SD 2) years), thirty young adults (25 (SD 5) years) and fifty-nine elderly (61 (SD 5) years). OMR was measured in a respiration chamber while sleep was not hindered and BMR was measured directly afterwards with a ventilated hood system under strictly controlled conditions. The mean ratio of OMR:BMR was 0.92 (SD 0.09) for children, which was significantly different from 1.00 (P<0.001), 1.00 (SD 0.07) for young adults and 1.06 (SD 0.09) for elderly which was also different from 1.00 (P<0.001). For adults, BMR is an appropriate measure of OMR. In children, the use of BMR to estimate OMR would introduce an overestimate and for elderly an underestimate.
每日能量需求的建议是基于基础代谢率（BMR）进行因子计算得出的。将总能量需求表示为BMR的倍数是基于BMR等于夜间代谢率（OMR）这一假设。本研究的目的是确定在儿童、年轻人和老年人中，BMR是否是OMR的合适替代指标。文中给出了30名儿童（11（标准差2）岁）、30名年轻人（25（标准差5）岁）和59名老年人（61（标准差5）岁）的数据。在呼吸室内测量OMR，测量时睡眠不受干扰，随后在严格控制的条件下用通风罩系统直接测量BMR。儿童的OMR:BMR平均比值为0.92（标准差0.09），与1.00显著不同（P<0.001）；年轻人的该比值为1.00（标准差0.07），老年人的为1.06（标准差0.09），这也与1.00不同（P<0.001）。对于成年人，BMR是OMR的合适测量指标。对于儿童，用BMR来估计OMR会导致高估，而对于老年人则会导致低估。
