Figure 1. Changes in (a) Height, (b) Mass, and (c) BMI z-scores during the academic year

From

Evaluating Associations between Physical Activity and Growth, Academic Attainment, and Socioeconomic Factors in Primary School Children - A Prospective Cohort Study

McCluskey M, Al-shallawi AN, Penk D, Bridges J, Gilson N, Hermens H, Buurke J, Pandyan A

Journal of Physical Activity Research. 2021, 6(2), 112-121 doi:10.12691/jpar-6-2-8