Assessment of energy expenditure in overweight women
Fogelholm, M.; Hiilloskorpi, H.; Laukkanen, R.; Oja, P.; Van Marken Lichtenbelt, W.; Westerterp, K.
Medicine and Science in Sports and Exercise 30(8): 1191-1197
1998
ISSN/ISBN: 0195-9131 PMID: 9710856 Document Number: 491380
Purpose: To compare field measures of average daily energy expenditure (ADEE) against criterion data by the doubly labeled water method (DLW) in overweight women. Methods: The subjects were 20 overweight (BMI 29.2 +- 3.0 kgcntdotm-2) premenopausal women. Energy expenditure was measured by DLW and by the factorial method (activity diary, two techniques differing by method to obtain resting energy expenditure, REE), heart-rate monitoring (HR, two techniques differing by the FLEX-point to discriminate sedentary and activity HR), accelerometer, and pedometer. Results: The ADEEDLW was 10.26 +- 1.1 MJcntdotd-1. The mean bias (ADEE by the alternative minus ADEEDLW) was smallest for the accelerometer (+0.08 +- 1.63 MJ) and HR-FLEX10 (+0.11 +- 1.67 MJ). The HR-FLEX0 technique (lower FLEX-point) overestimated ADEE by +1.18 (+- 1.97 MJ). However, the random error (SD of bias) was smallest for both factorial techniques (REE measured: -0.48 +- 0.81 MJ; REE calculated from the WHO equation: -0.22 +- 0.88 MJ). Conclusions: The results show that simple factorial methods may assess ADEE with small random errors in populations with a rather narrow range of physical activity. The accelerometer and HR with the higher FLEX-point gave comparable results with smaller bias but larger random error compared with the factorial techniques.