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Validity of a Semi-Quantitative Food Frequency Questionnaire for Collegiate Athletes.

Ayaka Sunami,Kazuto Sasaki,Yoshio Suzuki,Nobuhide Oguma,J. Ishihara,Ayumi Nakai,Jun Yasuda,Y. Yokoyama,T. Yoshizaki,Yuki Tada,A. Hida,Yukari Kawano

Published 2016 in Journal of Epidemiology

ABSTRACT

BACKGROUND Food frequency questionnaires (FFQs) have been developed and validated for various populations. To our knowledge, however, no FFQ has been validated for young athletes. Here, we investigated whether an FFQ that was developed and validated to estimate dietary intake in middle-aged persons was also valid for estimating that in young athletes. METHODS We applied an FFQ that had been developed for the Japan Public Health Center-based Prospective Cohort Study with modification to the duration of recollection. A total of 156 participants (92 males) completed the FFQ and a 3-day non-consecutive 24-hour dietary recall (24hDR). Validity of the mean estimates was evaluated by calculating the percentage differences between the 24hDR and FFQ. Ranking estimation was validated using Spearman's correlation coefficient (CC), and the degree of miscategorization was determined by joint classification. RESULTS The FFQ underestimated energy intake by approximately 10% for both males and females. For 35 nutrients, the median (range) deattenuated CC was 0.30 (0.10 to 0.57) for males and 0.32 (-0.08 to 0.62) for females. For 19 food groups, the median (range) deattenuated CC was 0.32 (0.17 to 0.72) for males and 0.34 (-0.11 to 0.58) for females. For both nutrient and food group intakes, cross-classification analysis indicated extreme miscategorization rates of 3% to 5%. CONCLUSIONS An FFQ developed and validated for middle-aged persons had comparable validity among young athletes. This FFQ might be useful for assessing habitual dietary intake in collegiate athletes, especially for calcium, vitamin C, vegetables, fruits, and milk and dairy products.

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