Understanding the Motives of Undertaking Physical Activity with Different Levels of Intensity among Adolescents: Results of the INDARES Study

Table 3

Results of multiple regressions examining the association between motives and PA in boys.

Physical activity	Motives	B	β	T	P
Vigorous intensity	F(5,509) = 11.822, p < .001, Model = .104
	(Constant)	-529.160		-1.177	.240
	Interest	31.506	.125	1.557	.120
	Competence	67.977	.274	3.436	< .001
	Appearance	35.612	.147	2.684	.008
	Fitness	-41.823	-.119	-1.708	.088
	Social	-47.726	-.158	-2.923	.004
Moderate intensity	F(5,509) = 2.648, p = .022, Model = .025
	(Constant)	807.764		1.491	.136
	Interest	-19.582	-.067	-.803	.422
	Competence	21.702	.076	.910	.363
	Appearance	10.708	.038	.670	.503
	Fitness	39.441	.097	1.337	.182
	Social	12.895	.037	.655	.512
Total	F(5,509) = 6.820, p < .001, Model = .063
	(Constant)	1498.001		1.422	.155
	Interest	36.749	.064	.775	.438
	Competence	103.562	.182	2.235	.026
	Appearance	56.490	.102	1.817	.070
	Fitness	-16.495	-.020	-.288	.774
	Social	-47.173	-.068	-1.233	.218