Table 1.
Strength and rate of torque development values and changes over time
| Presurgery | 5 Months | 5 Months Mean Difference to Baseline | Return to Activity (9 months) | Return to Activity Mean Difference to 5 months | Return to Activity Mean Difference to Baseline | |
|---|---|---|---|---|---|---|
| MVIC ACL | 124.79 (44.80) | 99.64 (38.11) | −25.15*
(−41.51, -8.78) P < 0.01 |
109.41 (40.07) | 9.77 (−1.05, 20.60) P = 0.09 |
−15.38 (−32.10, 1.35) P = 0.08 |
| MVIC non-ACL | 160.80 (49.08) | 171.48 (57.41) | 10.681 (−2.64, 24.00) P = 0.15 |
155.16 (47.96) | −16.33*
(−29.86, −2.79) P = 0.01 |
−5.645 −20.180 8.891 P = 0.99 |
| Mean between limb difference | 36.02*
(23.76, 48.27) P < 0.01 |
71.85*
(58.66, 85.04) P < 0.01 |
45.75*
(34.26, 57.24) P < 0.01 |
|||
| RTD50 ACL | 723.30 (350.03) | 518.75 (315.01) | −204.55*
(−381.28, −27.81) P = 0.02 |
647.08 (399.36) | 128.32*
(14.51, 242.14) P = 0.02 |
−76.22 (−278.26, 125.81) P > 0.99 |
| RTD50 non-ACL | 928.55 (428.93) | 934.25 (394.05) | 5.70 (−158.04, 169.44) P > 0.99 |
821.41 (357.93) | −112.85 (−269.09, 43.40) P = 0.23 |
−107.15 (−312.80, 98.51) P = 0.58 |
| Mean between limb difference | 205.26*
(59.53, 350.98) P < 0.01 |
415.50*
(306.04, 524.96) P < 0.01 |
174.33*
(92.54, 256.12) P < 0.01 |
|||
| RTD100 ACL | 677.95 (323.79) | 471.22 (285.59) | −206.73*
(−340.17, -73.30) P < 0.01 |
602.06 (304.03) | 130.84*
(49.81, 211.87) P < 0.01 |
−75.89 (−211.89, 60.11) P = 0.49 |
| RTD100 non-ACL | 901.25 (389.70) | 937.47 (372.81) | 36.21 (−103.44, 175.87) P > 0.99 |
798.97 (318.07) | −138.49*
(−246.54, -30.45) P < 0.01 |
−102.28 (−252.35, 47.79) P = 0.28 |
| Mean between limb difference | 223.30*
(113.21, 333.39) P < 0.01 |
466.25*
(361.86, 570.63) P < 0.01 |
196.91*
(129.19, 264.63) P < 0.01 |
|||
| RTD200 ACL | 462.80 (189.87) | 333.55 (165.24) | −129.25*
(−203.94, -54.56) P < 0.01 |
408.55 (174.67) | 75.00*
(29.38, 120.62) P < 0.01 |
−54.25 (−133.82, 25.33) P = 0.28 |
| RTD200 non-ACL | 613.18 (225.43) | 654.97 (237.78) | 41.79 (−25.91, 109.50) P = 0.38 |
578.45 (207.07) | −76.52*
(−139.80, -13.25) P = 0.01 |
−34.73 (−107.30, 37.84) P = 0.69 |
| Mean between limb difference | 150.38*
(95.28, 205.49) P < 0.01 |
321.42*
(257.05, 385.79) P < 0.01 |
169.90*
(121.06, 218.73) P < 0.01 |
|||
| RTDmax ACL | 880.02 (440.29) | 602.09 (381.35) | −277.92*
(−479.90, -75.95) P < 0.01 |
769.85 (469.30) | 167.76*
(33.62, 301.90) P = 0.01 |
−110.16 (−330.41, 110.08) P = 0.63 |
| RTDmax non-ACL | 1150.25 (555.89) | 1182.15 (502.17) | 31.90 (−172.07, 235.87) P > 0.99 |
1001.9 (439.59) | −180.24*
(−335.03, −25.46) P = 0.02 |
−148.34 (−369.86, 73.17) P = 0.29 |
| Mean between limb difference | 270.23*
(106.79, 433.66) P < 0.01 |
580.05*
(450.61, 709.50) P < 0.01 |
232.05*
(138.53, 325.57) P < 0.01 |
ACL, anterior cruciate ligament; MVIC, maximum voluntary isometric contraction; RTD, rate of torque development.
Data are presented as mean (standard deviation) or mean (95% confidence intervals), *P < 0.05.