Table 3.

Partial correlation between quadriceps setting and knee extension strength with individual test of the health-related physical fitness assessment

	Quadriceps setting strength				Knee extension strength
	r	95% CI		p	r	95% CI		p
		Lower	Upper			Lower	Upper
Grip strength	0.441	0.238	0.607	<0.001	0.485	0.290	0.641	<0.001
Number of sit-ups	0.226	0.107	0.465	0.025	0.346	0.129	0.531	0.003
Sit and reach distance	0.282	0.059	0.478	0.017	0.082	−0.148	0.303	0.498
One leg standing time	0.168	−0.061	0.381	0.160	0.095	−0.135	0.315	0.431
10 m obstacle walking time	−0.391	−0.568	−0.180	0.001	−0.220	−0.426	0.007	0.066
6 min walking distance	0.353	0.137	0.537	0.003	0.236	0.010	0.439	0.053

‘r’ refers topartial correlation coefficient (adjusted for age, sex, and BMI).

BMI, body mass index.