Table 4.

The normalized strength, force generated as percent of bodyweight, at baseline and discharge.

Healthy group (n 14) Painful group (n 11)	Baseline	3-week Follow up	Interaction group x time (p-value)	Main effect of Time (mean difference; 95%CI; p-value)	Main effect of group (mean difference; 95%CI; p-value)
Abduction
Healthy	13.2 ± 3.6	14.5 ± 3.8	0.59		3.4% (0.6-6.2%)
Painful	9.6 ± 2.8	11.2 ± 3.1			p 0.02†
Total (n 25)	11.6 ± 3.6	13.1 ± 3.8		1.5% (0.9-2.0%) p<0.001*
Prone Elevation
Healthy	7.7 ± 2.7	9.8 ± 3.1	0.85		1.8% (-0.2 – 3.7%)
Painful	6 ± 2.2	8 ± 1.3			p 0.08
Total (n 25)	6.9 ± 2.5	8.9 ± 2.6		2.0% (1.3-2.6%) p<0.001*
Flexion
Healthy	11.5 ± 3.2	12.5 ± 3.3	0.97		2.6% (0.3-4.9%)
Painful	8.9 ± 2.5	9.8 ± 2.3			p 0.03†
Total (n 25)	10.3 ± 3.2	11.3 ± 3.2		1.0% (0.2-1.7%) p 0.014*

^*indicates significant main effect of time. Results represent change regardless of group

^†indicates significant main effect of group. Results represent group differences regardless of timepoint