Energy expenditure determined by self-reported physical activity is related to body fatness
Energy expenditure determined by self-reported physical activity is related to body fatness
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DOI：
10.1002/j.1550-8528.1999.tb00387.x
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发表时间：
1999-01-01
期刊：
影响因子：
--
通讯作者：
Sun, M
中科院分区：
文献类型：
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作者：
Buchowski, MS;Townsend, KM;Sun, M
目的：活动自我报告是评估每日体力活动（PA）和相关能量消耗（EE）的常用工具。本研究探讨了影响相对体脂（%BF）之间的差异自我报告和测量的持续时间和相关的EE在healthands.Research Methods和Procedures：男性和女性（n = 115，年龄38+/-9岁），范围在%BF从7.9%到58.9%，花了两个独立的天（正常和运动）在整个房间间接热量计EE测量。而在房间热量计，受试者报告的类型，强度和持续时间的每一个执行PA。身体活动纲要被用来计算每项报告活动的能量成本。所有自我报告的活动（EEr）的EE被分为四个强度水平，同步，并与EE从房间热量计（EEm）。结果：随着%BF的增加，受试者显着高估持续时间更剧烈的活动（大于或等于4.5），而低估中等活动（2.5至4.4代谢当量（MET））。持续时间和/或强度的误报导致高估或低估了这些水平的PA相关EE。报告的EE睡眠低于测量的EE睡眠，尽管两者的持续时间相似。其结果是，总EEr是类似的EEm.Discussion：成人的自我报告中产生的每日总PA和相关EE的个体变异性很高。具有较高%BF的人报告中到高水平PA的持续时间和/或强度的准确性低于较瘦的个体。我们得出结论，使用身体活动纲要不适合准确估计具有较高%BF的成人AA自我报告的EE。
Objective: Activity self-reports are a commonly used tool in assessing daily physical activity (PA) and associated energy expenditure (EE). This study examined the effect of relative body fatness (%BF) on differences between self-reported and measured duration and associated EE in healthy adults.Research Methods and Procedures: Men and women (n = 115, age 38+/-9 years), ranging in %BF from 7.9% to 58.9%, spent two separate days (normal and exercise) in a whole-room indirect calorimeter where EE was measured. While in the room calorimeter, subjects reported the type, intensity, and duration of each performed PA. The Compendium of Physical Activity was used to calculate the energy cost of each reported activity. The EE of all self-reported activities (EEr) was categorized into four intensity levels, synchronized, and compared with EE from the room calorimeter (EEm).Results: With increasing %BF, subjects significantly overestimated duration of more strenuous activities (greater than or equal to 4.5), while underestimating moderate activities (2.5 to 4.4 metabolic equivalents (METs)). Misreporting of duration and/or intensity caused an overestimation or underestimation of PA-associated EE at these levels. Reported EE sleep was lower than measured EE sleep, although both had similar durations. As a result, total EEr was similar to EEm.Discussion: Individual variability of daily total PA and associated EE generated from self-reports in adults is high. Persons with a higher %BF report duration and/or intensity of moderate to high levels of PA with lower accuracy than leaner individuals. We conclude using the Compendium of Physical Activity is not suitable for the accurate estimation of self-reported EE of AA in adults with a higher %BF.