a positive trendgold
Based on the obtained results of the Hedge g test with 95% confidence interval for differences between morphological characteristics in relation to sex, children aged 7 years in 1990 and 2020, 7-year-old boys in 1990 show a positive trend in body height ( g = 0.7), body mass ( g = 0.68), upper arm skinfold ( g = 1.49), and forearm circumference ( g = 0.52).