Validity of Dietary Surveys in Physically Active Japanese Male Students

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"Under or overestimating dietary intake is considered a serious problem in dietary surveys. We compared estimated energy intake (EI) with measured total energy expenditure (TEE) in 22 physically active Japanese male students (age: 20.6±1.2 years: active group) and 37 physically non-active male students (age: 19.3±1.4 years: control group). EI was estimated by a food frequency questionnaire (FFQg). TEE was calculated by using the time study method with a measured basal metabolic rate. The accuracy of EI (EI/TEE) was 0.57 in the active group and 0.74 in the control group; showing a significant difference between the two groups (p<0.01). EI/TEE was negatively associated (r=-0.395, p<0.05) with BMI in the control group, but not in the active group. Intake of confectioneries, oils and fruits in the active group was significantly higher (p<0.01, p<0.05, p<0.01 respectively) than the control group. Intake of confectioneries and fruits per 1,000kcal was significantly higher (p<0.05, p<0.01 respectively) but grains were significantly lower (p<0.01) in the active group than the control group. EI/TEE was positively associated (r=0.539, p<0.05) with intake of fish per 1,000kcal in the active group. These results suggested that underestimating dietary intake might occur more often among physically active male students than physically inactive male students and it seemed to be associated with their lack of interest in food rather than psychological factors."
川崎医療福祉大学の論文

Validity of Dietary Surveys in Physically Active Japanese Male Students

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