Table 3.

Mediation effect test based on Bootstrap.

		Effect	Boot SE	Boot LLCI	Boot ULCI	Ratio of indirect to total effect
Total effect		0.397	0.032	0.403	0.530
Direct effect		0.260	0.035	0.240	0.377	65.49%
	Total indirect effect	0.137	0.018	0.125	0.197	34.51%
Indirect effect	Indirect effect 1	0.068	0.014	0.053	0.108	17.13%
	Indirect effect 2	0.059	0.012	0.046	0.092	14.86%
	Indirect effect 3	0.010	0.003	0.006	0.018	2.52%
	Compare 1	0.011	0.020	−0.026	0.052
	Compare 2	0.068	0.014	0.042	0.097
	Compare 3	0.056	0.012	0.034	0.081

Boot SE and Boot LLCI and Boot ULCI, respectively, refer to the standard error of effect and lower and upper limits of 95% confidence interval estimated by Bootstrap deviation correction method. Indirect effect 1: Physical exercise→social-emotional competency→social adaptability; Indirect effect 2: Physical exercise→self-esteem→social adaptability; Indirect effect 3: Physical exercise→social-emotional competency→self-esteem→social adaptability.