Table 2. Correlation between serum testosterone level, anthropometric data, and knee strength.

Variable	Testosterone
	r	p-value
No. of comorbidities	-0.212	0.101
Weight	-0.394	0.002*
Waist	-0.434	0.000*
Body mass index	-0.353	0.005*
Thigh circumference, right	-0.261	0.042*
Thigh circumference, left	-0.270	0.035*
Calf circumference, right	-0.390	0.002*
Calf circumference, left	-0.336	0.008*
Thigh circumference/weight, right	0.411	0.001*
Thigh circumference/weight, left	0.408	0.001*
Calf circumference/weight, right	0.330	0.009*
Calf circumference/weight, left	0.384	0.002*
Thigh circumference/waist, right	0.258	0.045*
Thigh circumference/waist, left	0.253	0.049*
Calf circumference/waist, right	0.147	0.259
Calf circumference/waist, left	0.216	0.094
Calf/thigh circumference, right	-0.194	0.135
Calf/thigh circumference, left	-0.063	0.630
Knee extension strength, right	-0.009	0.943
Knee extension strength, left	-0.127	0.328
Knee flexion strength, right	-0.062	0.635
Knee flexion strength, left	-0.141	0.278
Knee extension strength/weight, right	0.334	0.008*
Knee extension strength/weight, left	0.264	0.040*
Knee flexion strength/weight, right	0.186	0.150
Knee flexion strength/weight, left	0.114	0.381

Partial correlation analyses with age as a confounding factor were performed.

r: Pearson correlation coefficient.

^*p<0.05.