. 2021 Oct 1;16(5):1210–1221. doi: 10.26603/001c.27975

Table 2. Included Study Demographic Information.

Study	Intervention Details	Study Design	Participants (n)	Age (Years)	Gender	Sport	Outcome Measures
Haroy, J et al., 2017¹⁹	CA performed on both sides compared to Nordic Hamstring. Intervention performed 3x per week for 8 weeks with 1 set per side, progressing from 3-5 reps to 12-15 reps from beginner to advanced athletes.	RCT	33	Control Group - 16.9 ± 1.0	100 % Male	Soccer	EHAD
Haroy, J et al., 2017¹⁹		RCT	33	Intervention Group- 16.7 ± 0.9	100 % Male	Soccer	EHAD
Ishoi, L et al., 2016²¹	CA performed both sides compared to control group with no intervention. Intervention performed 2x per week for 8 weeks, progressing from 2 sets of 6 reps per side each session to 3 sets of 15 reps per side each session	Cluster RCT	20	Control - 17.4 (17-18)*	100 % Male	Soccer	EHAD
				Intervention - 17.3 (17-18)*			EHAB
				Intervention - 17.3 (17-18)*			EHAD:EHAB
Polglass, G et al., 2019²²	Modified Progressive CA (MPCA) with no comparison group. MPCA consisted of 6 levels, ranging from an assisted isometric adduction to a full CA exercise. Intervention was performed 2x per week for 8 weeks, progressing from 2 sets of 6 reps per side to 3 sets of 10 reps per side.	Cohort	17	27.4 (20-35)*	100 % Male	Soccer	EHAD
							EHAB
							EHAD:EHAB
Kohavi, B et al., 2018²³	CA compared to sliding hip (SH) exercises and control group with active mobilization. Intervention performed 2x per week for 8 weeks, progressing from 2 sets of 6 reps per side to 4 sets of 9 reps per side.	Prospective RCT	42	17.5 ± 1.1	100 % Male	Soccer	EHAD
							EHAB
							EHAD:EHAB
Serner, A et al., 2014¹⁷	Examined the EMG activity of 6 different adductor exercises.	Cohort	35	21.4 ± 3.3	100 % Male	Soccer	EMG activity

* = age range; EHAD = eccentric hip adduction strength; EHAB = eccentric hip abduction strength; EMG=electromyography