Improvement of students’ mental health in a Lai physical education program incorporating psychological scales

Figure 1.

Correlation analysis results

Variable	M	SD	T	Yj	Yx	XT	XJ
T	23.40	14.10	1
Yj	28.33	5.95	0.496**	1
Yx	9.95	4.73	-0.391**	-0.589**	1
XT	75.42	18.13	0.437**	0.785**	-0.573**	1
XJ	173.61	36.40	-0.585**	-0.811**	0.661**	-0.762**	1

The factors of the mental health scale are consistent with the same degree

Mental health	Eigenvalue	Contribution rate	Issue number	Factor load	Common degree
Happy life	5.39	21.52%	38	0.710	0.592
			37	0.681	0.513
			28	0.642	0.533
			39	0.585	0.476
			19	0.583	0.442
			7	0.543	0.462
Willing to learn	2.27	9.12%	1	0.810	0.671
			18	0.720	0.554
			24	0.673	0.587
			54	0.670	0.510
			2	0.495	0.340
Interpersonal harmony	1.84	7.42%	25	0.643	0.462
			70	0.630	0.462
			29	0.628	0.561
			56	0.617	0.420
			59	0.570	0.342
Test stabilization	1.51	6.05%	66	0.765	0.604
			44	0.711	0.622
			6	0.547	0.367
			60	0.542	0.375
			63	0.451	0.275
Emotional stability	1.24	5.01%	26	0.775	0.621
			30	0.741	0.585
			31	0.653	0.460
			43	0.612	0.411

The physical and mental health changes before and after the physical education

Mental health	M	SD	P
Happy life	0.22015	0.4752	0.005
Willing to learn	0.20835	0.5301	0.020
Interpersonal harmony	0.15487	0.2110	0.000
Test stabilization	0.12831	0.2920	0.012
Emotional stability	0.18075	0.4121	0.015

The reliability analysis of the psychological scale

Reliability analysis table
Mental health	Cronbachα coefficient		Half degree
Total scale	0.841		0.852
Happy life	0.781		0.738
Willing to learn	0.753		0.750
Interpersonal harmony	0.655		0.611
Test stabilization	0.644		0.561
Mental health	0.674		0.684
The verification factor analysis of the structural model
Index	RMSEA	GFI	NNFI	CFI
Value	0.06	0.94	0.87	0.89

Intermediate effect test

Benefit type	Effect value	Boot SE	Bootstrap95%CI
			Boot LLCL	Boot ULCL	Relative effect ratio(%)
Total effect	-0.0142	0.0009	-0.0160	-0.0132	100%
Indirect effect	-0.0055	0.0006	-0.0071	-0.0046	38.73%
Indirect total effect	-0.0087	0.0009	-0.0105	-0.0073	61.34%
Ind1	-0.0055	0.0006	0.0072	-0.0045
Ind2	-0.0006	0.0004	-0.0012	-0.0001
Ind3	-0.0031	0.0005	-0.0037	-0.0020
(C1)Ind1→Ind2	-0.0050	0.0009	-0.0062	0.0035
(C2)Ind1→Ind3	-0.0031	0.0009	-0.0045	-0.0011
(C3)Ind2→Ind3	0.0022	0.0003	0.0016	0.0030

Regression analysis

Regression equation		Integral fitting index			Standard regression coefficient
Result variable	Predictor variable	R2	Adjust R2	F	β	T
XJ	Grade	0.353	0.354	70.541	-0.081	-2.443*
	Biotically				0.040	1.235
	Only child				0.049	1.501
	Majors				-0.052	-1.602
	T				-0.573	-17.591***
Yj	Grade	0.257	0.250	43.530	0.085	2.548*
	Biotically				-0.031	-0.855
	Only child				-0.042	-1.262
	Majors				0.021	0.521
	T				0.480	13.710***
Yx	Grade	0.155	0.151	23.613	-0.060	-1.611
	Biotically				0.015	0.507
	Only child				0.061	1.652
	Majors				-0.045	-1.182
	T				-0.375	-10.045***
XT	Grade	0.643	0.630	156.031	0.093	3.770***
	Biotically				-0.020	-0.771
	Only child				0.030	1.299
	Majors				-0.021	-0.800
	T				0.051	1.642
	Yj				0.651	19.782***
	Yx				-0.163	-5.245***
XJ	Grade	0.759	0.755	244.032	0.008	0.350
	Biotically				0.011	0.721
	Only child				0.018	0.891
	Majors				-0.042	-1.821
	T				-0.211	-9.101***
	Yj				-0.340	-11.470***
	Yx				0.200	7.881***
	XT				-0.249	-7.750***