There was high-quality evidence that the Pregnancy Physical Activity Questionnaire (PPAQ) has sufficient reliability in assessing total physical activity (PA) and vigorous PA (VPA) in pregnancy. However, the questionnaire revealed insufficient construct validity in assessing these scores, but the evidence for this was of low-to-moderate quality.

The Australian Women’s Activity Study (AWAS), Leisure-Time Exercise Questionnaire (LTEQ), Leisure-Time Physical Activity Questionnaire (LTPAQ), and Recent Physical Activity Questionnaire (RPAQ) showed both insufficient reliability and construct validity when assessing either total PA, moderate-to-vigorous PA, or VPA in pregnancy. This assessment was based on very low-to-moderate quality evidence.

Most importantly, we need more high-quality evidence regarding the validity of objective measures of PA in pregnancy, such as accelerometers, and standards in data collection and processing criteria of these devices. Only then will we be able to guarantee adequate and comparable estimations of the validity of a PA questionnaire in pregnancy.