Association between 90o push-up and cardiorespiratory fitness: cross-sectional evidence of push-up as a tractable tool for physical fitness surveillance in youth

Table 10 Age-, sex-, and weight status-adjusted model for the associations between measures of musculoskeletal fitness (dependent variable: curl-up)

Model	Predictor variable	VIF	p - value	β	95% CI
Model 2	Trunk lift	1.122	.162	.088	(−.160, .955)
	90^o push-up**	1.357	<.001	.413	(.462, .926)
	Sit-and-reach	1.290	.712	.025	(−.408, .596)
	Age**	1.092	.001	.200	(.682, 2.745)
	female*	1.168	.017	.154	(.511, 5.229)
	Weight status	1.294	.102	−.111	(− 2.502, .226)

* Indicates statistical significance at the level of p < .05. ** Indicates statistical significance at the level of p < .01. β Standardized Beta Coefficient, VIF Variance Inflation Factor

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