Table 2.

Maximal voluntary contraction data of both legs of ACL-deficient patients and active and less-active controls (mean ± SD)

Variables	Group	Non-injured leg/dominant leg	Injured leg/non-dominant leg	Difference
				Absolute	Percentage
Quadriceps (Nm/kg)
Eccentric 60°/s	ACL patients	3.6 ± 0.8	3.1 ± 0.8	0.5†	13.9
	Active controls	4.0 ± 1.0	3.6 ± 0.8	0.4†	10.0
	Less-active controls	3.5 ± 0.9	3.5 ± 1.0	0.0	0.0
Isometric	ACL patients	3.5 ± 0.7	3.1 ± 0.8	0.4†	11.4
	Active controls	3.7 ± 0.6	3.6 ± 0.7	0.1	2.7
	Less-active controls	3.4 ± 0.7	3.2 ± 0.8	0.2†	5.9
Concentric 60°/s	ACL patients	2.5 ± 0.6	2.2 ± 0.6	0.3†	12.0
	Active controls	2.6 ± 0.6	2.6 ± 0.5	0	0.0
	Less-active controls	2.5 ± 0.6	2.4 ± 0.6	0.1†	4.0
Concentric 120°/s	ACL patients	2.1 ± 0.5	1.9 ± 0.5	0.2†	9.5
	Active controls	2.1 ± 0.5	2.2 ± 0.4	−0.1	−4.8
	Less-active controls	2.0 ± 0.5	1.9 ± 0.5	0.1	5.0
Concentric 180°/s	ACL patients	1.9 ± 0.5	1.7 ± 0.4	0.2†	10.5
	Active controls	1.8 ± 0.5	1.9 ± 0.4	−0.1	−5.6
	Less-active controls	1.9 ± 0.5	1.7 ± 0.4	0.2†	10.5
Hamstring (Nm/kg)
Eccentric 60°/s	ACL patients	2.4 ± 0.5	2.0 ± 0.5	0.4†	16.7
	Active controls	2.4 ± 0.4	2.4 ± 0.5	0.0	0.0
	Less-active controls	2.5 ± 0.6	2.3 ± 0.6	0.2	8.0
Isometric	ACL patients	1.5 ± 0.3	1.4 ± 0.4	0.1†	6.7
	Active controls	1.6 ± 0.4	1.6 ± 0.4	0.0	0.0
	Less-active controls	1.5 ± 0.3	1.5 ± 0.4	0.0	0.0
Concentric 60°/s	ACL patients	1.3 ± 0.3	1.2 ± 0.3	0.1	7.7
	Active controls	1.4 ± 0.4	1.4 ± 0.3	0.0	0.0
	Less-active controls	1.2 ± 0.3	1.2 ± 0.4	0.0	0.0
Concentric 120°/s	ACL patients	1.1 ± 0.3	1.1 ± 0.3	0.0	0.0
	Active controls	1.3 ± 0.4	1.2 ± 0.3	0.1	7.7
	Less-active controls	1.1 ± 0.2	1.1 ± 0.3	0.0	0.0
Concentric 180°/s	ACL patients	1.1 ± 0.3	1.1 ± 0.2	0.0	0.0
	Active controls	1.2 ± 0.3	1.2 ± 0.4	0.0	0.0
	Less-active controls	1.0 ± 0.3	1.0 ± 0.3	0.0	0.0

^†Between-leg difference within each group (P < 0.05)