Ten studies examined the effect of early versus delayed implementation of post-operative exercise. Implementing early exercise was
more effective than delayed exercise in the short term recovery of shoulder flexion ROM (Weighted Mean Difference (WMD): 10.6
degrees; 95%Confidence Interval (CI): 4.51 to 16.6); however, early exercise also resulted in a statistically significant increase in wound
drainage volume (Standardized Mean Difference (SMD) 0.31; 95% CI: 0.13 to 0.49) and duration (WMD: 1.15 days; 95% CI: 0.65
to 1.65).