Table 3.

The bootstrapping analysis of the mediating effects.

Variables	Effect	BootSE	BootLLCI	BootULCI	Proportion
Indirect_all effect	0.072	0.015	0.044	0.102	20.28%
Indirect effect 1	0.059	0.014	0.034	0.089	16.54%
Indirect effect 2	0.012	0.006	0.002	0.023	3.27%
Indirect effect 3	0.001	0.001	0.000	0.004	0.42%
Direct effect	0.288	0.037	0.216	0.361	79.72%
Total effect	0.360	0.038	0.289	0.435	100.00%

SE and CI are estimated based on 1,000 Bootstrap samples. LL, low limit; CI, confidence interval; UL, upper limit. Indirect effect 1: Physical Activity_ Interpersonal relationships _Academic Engagement; Indirect effect 2: Physical Activity _Academic Support _Academic Engagement; Indirect effect 3: Physical Activity _Interpersonal relationships _Academic Support _Academic Engagement.