Table 2. Muscle volumes (cm3).
Muscle volume (cm3) (mean (SD) for muscle groups and individual muscles. Strong and weak legs were designated based on the sum of the knee extensor and flexor torques. Volumes were calculated using Analyze 11.0 for each ROI.
| S_ = Strong Leg W_ = Weak Leg |
MS | P-Value S vs W | CON | P-Value S vs W | P-value MS vs. Con |
|---|---|---|---|---|---|
|
| |||||
| Knee Extensors | 371.24 (113.61) | 461.06 (177.98) | .33 | ||
| S_RF | 216.27 (76.95) | 247.51 (95.36) | .65 | ||
| W_RF | 208.10 (71.58) | .12 | 252.50 (92.26) | .40 | .44 |
| S_VL | 561.12 (154.58) | 654.18 (281.04) | .57 | ||
| W_VL* | 502.70 (157.72) | .03 | 691.82 (274.38) | .21 | .16 |
| S_VI | 356.28 (152.05) | 399.83 (189.34) | .65 | ||
| W_VI | 348.19 (158.60) | .40 | 414.24 (162.30) | .58 | .44 |
| S_VM | 397.94 (106.44) | 504.44 (184.40) | .20 | ||
| W_VM | 379.33 (105.94) | .12 | 523.99 (205.13) | .12 | .16 |
| Knee Flexors | 131.81 (35.90) | 140.77 (36.68) | .80 | ||
| S_BFL | 185.33 (62.08) | 194.03 (63.06) | .72 | ||
| W_BFL | 165.58 (46.59) | .09 | 194.40 (59.78) | .78 | .38 |
| S_BFS | 57.11 (15.75) | 72.75 (26.71) | .20 | ||
| W_BFS | 58.37 (14.07) | .89 | 67.53 (23.19) | .48 | .38 |
| S_SM | 215.37 (44.13) | 183.74 (36.00) | .16 | ||
| W_SM* | 199.50 (48.07) | .03 | 200.71 (46.18) | .05 | .96 |
| S_ST | 150.57 (59.97) | 154.50 (42.72) | 1.00 | ||
| W_ST* | 130.73 (52.80) | .01 | 179.19 (98.20) | 1.00 | .33 |
| S_Grac | 76.26 (28.36) | 81.27 (31.52) | .72 | ||
| W_Grac | 79.33 (28.73) | .40 | 79.56 (28.39) | .58 | 1.00 |
| S_TA | 105.98 (24.38) | 119.35 (30.08) | .44 | ||
| W_TA | 108.64 (28.93) | .78 | 112.65 (29.76) | .07 | .72 |
| S_GL | 243.74 (87.40) | 215.35 (38.09) | .44 | ||
| W_GL | 226.70 (78.13) | .07 | 238.22 (56.16) | .16 | .88 |
| S_GM | 211.21 (37.52) | 255.05 (58.43) | .13 | ||
| W_GM† | 197.37 (43.35) | .33 | 253.70 (49.44) | .89 | .04 |
| S_Sol | 360.68 (148.22) | 420.77 (106.38) | .28 | ||
| W_Sol | 346.91 (148.15) | .67 | 395.95 (120.24) | .09 | .23 |
| S_TFL | 52.44 (28.17) | 58.43 (29.53) | .65 | ||
| W_TFL | 47.48 (25.29) | .21 | 59.41 (25.41) | .78 | .33 |
| S_Iliop | 311.04 (113.26) | 349.99 (132.68) | .51 | ||
| W_Iliop | 297.74 (75.96) | .58 | 365.51 (114.34) | .16 | .16 |
| S_Sart | 120.14 (45.84) | 156.03 (59.05) | .16 | ||
| W_Sart | 106.53 (39.04) | .05 | 157.91 (67.90) | .58 | .13 |
| S_AdM | 521.40 (166.26) | 589.04 (304.91) | .88 | ||
| W_AdM | 470.86 (140.85) | .16 | 588.73 (285.72) | .40 | .51 |
†
= P < 0.05 between MS and CON.
*
= P < 0.05 between legs.
RF, Rectus Femoris; VL, Vastus Lateralis; VI, Vastus Intermedius; VM, Vastus Medialis; BFL, Biceps Femoris Long Head; BFS, Biceps Femoris Short Head; SM, Semimembranosus; ST, Semitendinosus; Grac, Gracilis; TA, Tibialis Anterior; GL, Gastrocnemius Lateral Head; GM, Gastrocnemius Medial Head; Sol, Soleus; TFL, Tensor Fasciae Latae; Iliop, Iliopsoas; Sart, Sartorius; AdM, Adductor Magnus.