Table 4.

Results on the return to play (RTP) measurements for all athletes (N = 158) and comparison of results between athletes tested by their primary physical therapist (N = 69) and those not tested by their primary physical therapist (N = 89).

RTP measurement	LSI (all athletes), mean (± SD)	Athletes passing the RTP criterion (all athletes), N (%)	Athletes passing the RTP criterion (athletes tested), N (%)	Athletes passing the RTP criterion (athletes not tested), N (%)	p-value*
Isometric knee extensor	100 (±11)	133(84)	61(81)	72 (88)	0.200
strength
Isometric knee flexor	94 ( ± 12)	101 (64)	50 (73)	51 (57)	0.049
strength
Eccentric knee flexor	95 ( ± 14)	98 (62)	46 (67)	52 (58)	0.290
strength
Isometric hip abduction strength	102 ( ± 11)	136(86)	60 (87)	76 (85)	0.778
Vertical jump	93 ( ± 12)	101 (64)	48 (70)	53 (60)	0.194
Hop for distance	98 ( ± 7)	139 (88)	61 (88)	78 (88)	0.883
Side hop	94 ( ± 16)	107 (68)	47 (68)	60 (67)	0.926
All quantitative measurements		30 (19)	17(25)	13(15)	0.111
Single-leg hop-and-hold
Operated leg	_	136 (86)	61 (88)	75 (84)	0.456
Non-operated leg	-	138 (87)	61 (88)	77(87)	0.723
CMJ with LESS
Operated leg	4.8 ( ± 2.6)	101 (64)	52 (75)	49 (55)	0.024
Non-operated leg	4.8 ( ± 2.6)	103 (65)	55 (80)	48 (54)	0.003
Both qualitative measurements
Only the operated leg	-	89 (56)	47 (68)	42 (47)	0.009
	-	91 (58)	50 (73)	41 (46)	0.001
Only the non-operated leg
Both legs together	-	81 (51)	46 (67)	35 (39)	0.001
All 9 measurements	-	25 (16)	16 (23)	9(10)	0.026
together

RTP = return to play, LSI = Limb Symmetry Index, CMJ = counter movement jump, LESS = Landing Error Scoring System *p-value for comparison between athletes tested by their own physical therapist and those not tested by their own physical therapist