TY - JOUR
T1 - Comparison of energy expenditure estimates from doubly labeled water, a physical activity questionnaire, and physical activity records
AU - Conway, Joan M.
AU - Seale, James L.
AU - Jacobs, David R.
AU - Irwin, Melinda L.
AU - Ainsworth, Barbara E.
PY - 2002
Y1 - 2002
N2 - Background: Various methods are used by epidemiologists to estimate the energy cost of physical activity; these include physical activity records and recalls. However, there is limited validation of these methods against the doubly labeled water technique for determining energy expenditure (EE). Objective: We compared EE as estimated by indirect methods (physical activity records and recall questionnaires) used in epidemiologic studies with EE obtained from doubly labeled water (EEDLW) in free-living men. Design: We determined EEDLW, energy intake at weight maintenance, and EE from 7-d physical activity records (EERecord) and a 7-d physical activity recall questionnaire (EERecall) in 24 men aged 41 ± 2.0 y (̄ ± SEM) with a body mass index (in kg/m2) of 25.1 ± 0.5. Results: There was excellent agreement between EEDLW (13.27 ± 0.35 MJ/d) and energy intake (13.19 ± 0.36 MJ/d), with a difference of 0.5 ± 1.0% (̄ ± SE). The indirect measures of physical activity and EE were 14.17 ± 0.37 MJ/d for EERecord (difference from EEDLW: 7.9 ± 3.2%) and 17.40 ± 1.45 MJ/d for EERecall (difference from EEDLW: 30.6 ± 9.9%). Conclusions: Seven-day physical activity records provide an acceptable estimate of EE in free-living adults compared with EEDLW, but 7-d physical activity recalls have limited application to estimate daily EE. For optimal validity, the 7-d physical activity records require good subject compliance and the provision of careful instructions for their use.
AB - Background: Various methods are used by epidemiologists to estimate the energy cost of physical activity; these include physical activity records and recalls. However, there is limited validation of these methods against the doubly labeled water technique for determining energy expenditure (EE). Objective: We compared EE as estimated by indirect methods (physical activity records and recall questionnaires) used in epidemiologic studies with EE obtained from doubly labeled water (EEDLW) in free-living men. Design: We determined EEDLW, energy intake at weight maintenance, and EE from 7-d physical activity records (EERecord) and a 7-d physical activity recall questionnaire (EERecall) in 24 men aged 41 ± 2.0 y (̄ ± SEM) with a body mass index (in kg/m2) of 25.1 ± 0.5. Results: There was excellent agreement between EEDLW (13.27 ± 0.35 MJ/d) and energy intake (13.19 ± 0.36 MJ/d), with a difference of 0.5 ± 1.0% (̄ ± SE). The indirect measures of physical activity and EE were 14.17 ± 0.37 MJ/d for EERecord (difference from EEDLW: 7.9 ± 3.2%) and 17.40 ± 1.45 MJ/d for EERecall (difference from EEDLW: 30.6 ± 9.9%). Conclusions: Seven-day physical activity records provide an acceptable estimate of EE in free-living adults compared with EEDLW, but 7-d physical activity recalls have limited application to estimate daily EE. For optimal validity, the 7-d physical activity records require good subject compliance and the provision of careful instructions for their use.
KW - Basal metabolic rate
KW - Doubly labeled water
KW - Energy intake
KW - Exercise
KW - Men
KW - Physical activity recall
KW - Physical activity records
KW - Stanford 7-d physical activity questionnaire
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U2 - 10.1093/ajcn/75.3.519
DO - 10.1093/ajcn/75.3.519
M3 - Article
C2 - 11864858
AN - SCOPUS:0036178044
VL - 75
SP - 519
EP - 525
JO - American Journal of Clinical Nutrition
JF - American Journal of Clinical Nutrition
SN - 0002-9165
IS - 3
ER -