Number of days required to estimate physical activity constructs objectively measured in different age groups: Findings from three Brazilian (Pelotas) population-based birth cohorts.
Luiza Isnardi Cardoso RicardoAndrea WendtLeony Morgana GallianoWerner de Andrade MullerGloria Isabel Niño CruzFernando WehrmeisterSoren BrageUlf EkelundInácio Crochemore M SilvaPublished in: PloS one (2020)
Our results show that four and five measurement days are needed to estimate all habitual PA constructs, for children and adults, respectively. Also, among 30-year-old adults, it is important to make efforts towards weekend days measurement.