VALIDATION OF THE 1990 and 1995 RECOMMENDATIONS USING DIARIES AND ACCELEROMETERS.

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69 The purpose of this study was to validate the potential of two questions in assessing the current or the previous physical activity (PA) recommendations. These two interviewer-administered questions were validated against a 7-day PA diary and a CSA accelerometer. Participants were 28 Latina and 28 African-American women who participated in the Women On The Move Study M age=51.30 ± 9.68). CSA and diary data were summarized, using a FORTRAN algorithm, to assess if each participant: 1) accumulated 30 minutes of moderate-intensity PA on at least five days in the previous week; and 2) did 20 to 60 minutes of moderate to high intensity endurance exercise on at least three days in the previous week. Cutoffs employed to summarize the diary data were 3 and 4 METs while all counts above 1560 served to summarize the CSA data. Kappa coefficients of agreement for the 1990 recommendation question were as follow:.30 (p<.05) for the CSA accelerometer;.23 (p<.05) for diary patterns above 3 MET; and.42 (p<.05) for diary patterns above 4 MET. Kappa coefficients of agreement for the 1995 recommendation question were as follow:.19 (p=.07) for the CSA accelerometer;.33 (p<.05) for diary patterns above 3 MET; and.43 (p<.05) for diary patterns above 4 MET. In summary, it is observed that these two global recommendation questions correlate significantly with the validation standards. Of interest is to note that the CSA, although significant with the 1990 recommendation question, was not significantly correlated with the 1995 recommendation question. In contrast the diary data was significantly correlated with both questions. Because the newer recommendation emphasizes more unstructured activities, the CSA accelerometer alone may not adequately identify unstructured activities or non walking activities.