. 2022 Feb 23;57(8):771–779. doi: 10.4085/1062-6050-0647.21

Table 6.

Bivariate Correlations Among Pain Severity and Duration, Quadriceps Function, and Self-Reported Function

	Pain Severity	Pain Duration	Quadriceps				Self-Reported Function
	Pain Severity	Pain Duration	Maximal Strength	Explosive Strength	Activation	Endurance	Self-Reported Function
Pain severity	1
Pain duration	0.53^a	1
Quadriceps maximal strength	−0.42^a	−0.40^a	1
Quadriceps explosive strength	−0.28^b	−0.28^b	0.44^a	1
Quadriceps activation	−0.44^a	−0.31^b	0.47^a	0.20^b	1
Quadriceps endurance	−0.31^b	−0.36^b	0.56^a	0.26^b	0.36^b	1
Self-reported function	−0.85^a	−0.56^a	0.46^a	0.36^b	0.51^a	0.36^b	1

P < .0001.

P < .05.