Table 3.

Cross-sectional associations of physical activity and pubertal development with GPA at baseline and follow-up.

	All			Boys			Girls
	β	95%CI	p	β	95%CI	p	β	95%CI	p
Baseline
MVPA	0.101	0.026 to 0.179	0.009	0.144	0.028 to 0.260	0.028	−0.015	−0.120 to 0.090	0.780
PDS	0.015	−0.065 to 0.095	0.713	−0.095	−0.214 to 0.024	0.116	0.104	−0.004 to 0.211	0.058
Follow-up
MVPA	0.058	−0.020 to 0.136	0.144	0.059	−0.058 to 0.177	0.321	0.057	−0.048 to 0.163	0.285
PDS	0.044	−0.036 to 0.124	0.279	−0.033	−0.155 to 0.088	0.592	0.104	−0.002 to 0.211	0.055

Note: Data are standardized regression coefficients, and their 95% CIs are adjusted for age and sex.

Abbreviations: CI = confidence interval; GPA = grade point average; MVPA = moderate-to-vigorous physical activity; PDS = Pubertal Development Scale.