Validating Efficacy of Shea Nut Oil Extract in Knee Osteoarthritis Patients

Table 3

The correlation between muscle thickness change and other possible contributary factors.

Baseline data	Correlation coefficient	P value
OA severity level
PTC at 90	−0.2	0.15
PTC at 60	−0.09	0.51
PTC at submax	−0.02	0.88
Pain duration
PTC at 90	0.03	0.85
PTC at 60	−0.11	0.42
PTC at submax	−0.15	0.26
Pain scale
PTC at 90	0.06	0.69
PTC at 60	0.05	0.73
PTC at submax	0.05	0.74

PTC: percentage of thickness change; 90: MVC at knee flexion 90°; 60: MVC at knee flexion 60°; submax: submaximal effort (30% of MVC) at knee flexion 60°.