The self-reported nature of the data and the fact of our main outcome (physical exercise pattern)
comes from non-validated questionnaire are also limitations that should be acknowledged
to interpreter our results. The available validated questionnaires comprise different
aspects of physical activity and a limited period of time, such the last 7 days, on e or three
months [20–22] which is insufficient to embrace the whole gestation, leading the need of longitudinal
studies.