The effects of bracing and knee flexion angle on hamstring activity during crutch walking: A preliminary study for post-operative care

Figures & data

Table 1. Semitendinosus sEMG activity during ambulation with and without a brace at specified knee flexion angles

Knee flexion angle	Normalized peak signal amplitude per condition^a		p-value
	Braced	Unbraced
0˚	19 ± 17.0	18 ± 11.3	0.686
30˚	35 ± 26.6	25 ± 21.2	0.182
60˚	41 ± 21.2	37 ± 24.5	0.713
90˚	29 ± 16.4	42 ± 25.0	0.181

^a Data are expressed as percentage of peak dynamic sEMG and presented as mean ± SD.

Table 2. Biceps femoris EMG activity during ambulation with and without a brace at various knee flexion angles

Knee flexion angle	Normalized peak signal amplitude per condition ^a		p-value
	Braced	Unbraced
0˚	23 ± 15.4	23 ± 16.8	0.818
30˚	29 ± 20.5	44 ± 35.1	0.210
60˚	47 ± 18.0	45 ± 28.5	0.088
90˚	32 ± 14.2	52 ± 30.4	0.100

^a Data are expressed as percentage of peak dynamic sEMG and presented as mean ± SD.