. Author manuscript; available in PMC: 2015 Jan 8.

Published in final edited form as: J Orthop Sports Phys Ther. 2012 Oct 22;42(12):1039–1049. doi: 10.2519/jospt.2012.3763

TABLE 1.

Subject Information for Aim 1 (n = 13)^*

	3 mo	1 y	3 y
Height, m	1.72 ± 0.08	…	…
Weight, kg	91.9 ± 10.6	91.1 ± 10.9	89.9 ± 10.9
BMI, kg/m²	31.0 ± 4.1	30.8 ± 4.2	30.4 ± 4.0
SF-36 PCS	45.2 ± 8.0	52.2 ± 4.4^†	46.0 ± 8.7^‡
SF-36 MCS	58.0 ± 5.3	58.2 ± 4.4	56.9 ± 4.2
KOS-ADL	0.81 ± 0.10	0.88 ± 0.09^‡	0.88 ± 0.09
TUG, s	7.4 ± 1.3	6.9 ± 1.4^†	7.0 ± 11.3
SCT, s	11.3 ± 3.0	10.1 ± 2.3^†	10.2 ± 2.1
6MW, m	581.1 ± 109.5	580.2 ± 172.8	615.2 ± 113.8
Knee e-AROM, deg^§	1.6 ± 2.4	–0.2 ± 3.4^‡	–2.1 ± 3.7
Knee f-AROM, deg	119.5 ± 8.9	124.7 ± 6.9^‡	128.5 ± 8.3^‡
MVIC, N/BMI
Operated	18.4 ± 7.4^‖	21.2 ± 9.2^‡^¶	19.8 ± 7.5
Nonoperated	27.8 ± 9.7	25.9 ± 11.2	21.5 ± 9.8^‡
CAR, %
Operated	92.5 ± 4.7	93.2 ± 7.1	90.6 ± 9.8
Nonoperated	92.2 ± 6.2	90.4 ± 6.5	89.0 ± 8.8

Abbreviations: 6MW, 6-minute walk test; BMI, body mass index; CAR, central activation ratio; e-AROM, extension active range of motion; f-AROM, flexion active range of motion; KOS-ADL, Knee Outcome Survey activities of daily living subscale; MCS, mental component summary; MVIC, maximum voluntary isometric contraction; PCS, physical component summary; SCT, stair-climbing test; SF-36, Medical Outcomes Study 36-Item Short-Form Health Survey; TUG, timed up-and-go test.

Values are mean ± SD.

^†

Significant difference from the previous session (P<.01).

^‡

Significant difference from the previous session (P<.05).

^§

Negative direction of e-AROM indicates hyperextension of the knee.

^‖

Significant difference from the nonoperated limb (P<.01).

^¶

Significant difference from the nonoperated limb (P<.05).