Table 1

Peak and Integrated EMG values for comparison group and ACLR athletes.

Participant category	EMG measurement method	Swing	Stance	P value	ES		Swing	Stance	P value	ES
Participant category	EMG measurement method	Lateral hamstring (HS)	Lateral HS	P value	ES		Medial HS	Medial HS	P value	ES
Comparison	iEMG	43.72 (14.27)	10.61 (4.02)	0.00		−3.62	50.37 (14.35)	11.96 (5.67)	0.00		−3.84
Comparison	Peak	0.84 (0.15)	0.83 (0.17)	0.86		−0.04	0.85 (0.17)	0.73 (0.20)	0.01		−0.63
BTB graft injured	iEMG	46.81 (25.25)	9.00 (6.47)	0.00		−2.38	45.27 (16.54)	10.03 (4.65)	0.00		−3.45
BTB graft injured	Peak	0.87 (0.15)	0.73 (0.11)	0.03		−1.05	0.82 (0.20)	0.60 (0.24)	0.02		−0.97
BTB graft non-injured	iEMG	51.67 (37.99)	9.62 (4.23)	0.01		−1.99	38.05 (16.11)	8.04 (3.37)	0.00		−3.08
BTB graft non-injured	Peak	0.74 (0.26)	0.82 (0.22)	0.43		0.33	0.80 (0.28)	0.58 (0.25)	0.01		−0.63
HS graft injured	iEMG	48.01 (20.28)	9.48 (4.11)	0.00		−3.16	44.59 (17.07)	8.52 (4.42)	0.00		−3.35
HS graft injured	Peak	0.77 (0.14)	0.79 (0.22)	0.85		0.08	0.81 (0.21)	0.56 (0.25)	0.01		−1.09
HS graft non-injured	iEMG	46.30 (25.15)	8.52 (3.82)	0.00		−2.61	45.27 (16.54)	10.03 (4.64)	0.00		−3.33
HS graft non-injured	Peak	0.77 (0.14)	0.79 (0.22)	0.86		0.08	0.81 (0.16)	0.68 (0.15)	0.06		−0.86

Mean (SD) values and pairwise comparisons for both peak EMG and iEMG for both lateral and medial HS in swing and stance phases for each of the cohorts. Data bars are proportionate representing the magnitude (ES) and direction of the difference in HS activation comparing swing to stance phase. Note that stance phase activation is less than swing phase in 17 out of 20 comparisons, and in all 10 comparisons for the medial HS.
Bold values indicate statistically significant results.
EMG, electromyography; ES, effect size.