. 2017 May;52(5):422–428. doi: 10.4085/1062-6050-52.3.05

Table 2. .

Quadriceps Function and Hamstrings Coactivation After Anterior Cruciate Ligament Reconstruction: Independent-Samples t Tests (Mean ± SD)

	Group
Dependent Variable	Injured	Uninjured
Peak torque, Nm/kg^a	1.86 ± 0.74	2.56 ± 0.37
Peak rate of torque development, Nm/s/kg^a	39.4 ± 18.7	52.9 ± 16.4
Central activation ratio, %^a	83.3 ± 11.1	93.7 ± 3.2
Quadriceps electromyographic amplitude, mV^a	0.25 ± 0.12	0.37 ± 0.26
Hamstrings co-activation, % maximal voluntary isometric contraction^a	27.2 ± 12.8	14.3 ± 3.7

P < .05 indicates the injured-group mean was different than the uninjured-group mean.