The association between physical fitness and mental health in Norwegian adolescents

BMC Public Health

Table 2 Linear mixed effect models with Total difficulties score as the dependent variable

Model	Independent variable	B (95% CI)	p
1	Body mass index	.058 (−.027 to .142)	.184
2	Sit-ups	−.088 (−.156 to −.020)	.011
3	Standing broad jump	−.008 (−.018 to .003)	.147
4	Handgrip strength	−.024 (−.062 to .013)	.206
5	Muscular strength z score	−.458 (−.810 to −.109)	.010
6	Cardiorespiratory fitness	−.006 (−.009 to −.003)	<.001
7 – Fully adjusted model	Intercept	18.8 (14.6 to 23.0)	<.001
	Body mass index	.003 (−.086 to .093)	.941
	Muscular strength z score	−.033 (−.450 to .381)	.873
	Cardiorespiratory fitness	−.006 (−.009 to −.002)	.001

Note. 29 school clusters were included as random effects in all models; all models were controlled for sex, socioeconomic status, and birthplace. B Unstandardized regressioncoefficient, CI Confidence interval, p Significance level

ISSN: 1471-2458