Purpose: To examine the validity and repeatability of a short leisure time physical activity (LTPA) questionnaire during pregnancy.
Methods: Seventy-nine women with uncomplicated pregnancies and weeks' gestation
Results: Forty-five (57%) and 47 (59%) women were available for pedometer and logbook comparisons and 49 (62%) for repeatability assessment. LTPAQ2 showed no correlation with pedometer but moderate correlation with the logbook for the frequency of moderate to vigorous-intensity LTPA (r(s) = 0.68, 95% CI 0.48 to 0.81). In repeatability, the typical error for frequency estimates varied from 1.2 to 3.7 sessions and CV for duration from 119 to 369%. The corresponding values for systematic error were -1.0 to 0.3 sessions and 4 to 36%. The 95% limits of agreement for single variables were large.
Conclusions: The questionnaire was valid for assessing moderate to vigorous-intensity LTPA but its individual repeatability proved weak.
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