Table 4. Comparison of the improvements shown by the experimental and control groups (Mean±SD) (Unit: ).

	Experimental group (n=15)	Control group (n=15)
Active knee flexion	−1.33±2.29	−0.80±2.70
Knee joint MMT quadriceps*	−1.73±0.46	−1.06±0.59
Knee joint MMT hamstring	−1.20±0.56	−1.06±0.96
WOMAC score*	4.30±1.57	1.33±1.56

*p<0.05, Knee flexion (angle°), MMT=Manual muscle test, MMT score, K-WOMAC = Korean-Western Ontario and McMaster Universities osteoarthritis index score