Table 3 Mediating effect and 95% confidence interval estimated by the bootstrap method.

		Estimate	Bias-corrected 95% CI			Percentile 95% CI			Percentage of effect
		Estimate	Lower	Upper	p	Lower	Upper	p	Percentage of effect
PA	Indirect effect	0.113	0.083	0.143	***	0.083	0.143	***	70.63%
	Direct effect	0.047	0.008	0.085	*	0.008	0.084	*	29.37%
	Total effect	0.160	0.111	0.209	***	0.110	0.208	***
Low PA	Indirect effect	− 0.085	− 0.113	− 0.055	**	− 0.115	− 0.056	***	67.46%
	Direct effect	− 0.040	− 0.074	− 0.008	*	− 0.073	− 0.007	*	31.75%
	Total effect	− 0.126	− 0.168	− 0.081	***	− 0.168	− 0.082	***
Medium PA	Indirect effect	0.036	0.007	0.064	*	0.008	0.065	*
	Direct effect	–	− 0.005	0.057	0.102	− 0.006	0.056	0.106
	Total effect	–	0.020	0.104	**	0.020	0.104	**
High PA	Indirect effect	0.085	0.056	0.114	***	0.056	0.114	***
	Direct effect	–	− 0.007	0.063	0.119	− 0.008	0.062	0.125
	Total effect	–	0.065	0.158	**	0.066	0.159	**

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