Mersmann F, Bohm S, Schroll A, Boeth H, Duda G, Arampatzis A
Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, Berlin, Germany.
Scand J Med Sci Sports. 2015 Apr;25(2):e208-13. doi: 10.1111/sms.12285. Epub 2014 Jun 27.
The present study investigated the applicability of a muscle volume prediction method using only the muscle length (L(M)), the maximum anatomical cross-sectional area (ACSA(max)), and a muscle-specific shape factor (p) on the quadriceps vastii. L(M), ACSA(max), muscle volume, and p were obtained from magnetic resonance images of the vastus intermedius (VI), lateralis (VL), and medialis (VM) of female (n = 20) and male (n = 17) volleyball athletes. The average p was used to predict muscle volumes (V(p)) using the equation V(p) = p × ACSA(max) × L(M). Although there were significant differences in the muscle dimensions between male and female athletes, p was similar and on average 0.582, 0.658, 0.543 for the VI, VL, and VM, respectively. The position of ACSA(max) showed low variability and was at 57%, 60%, and 81% of the thigh length for VI, VL, and VM. Further, there were no significant differences between measured and predicted muscle volumes with root mean square differences of 5-8%. These results suggest that the muscle shape of the quadriceps vastii is independent of muscle dimensions or sex and that the prediction method could be sensitive enough to detect changes in muscle volume related to degeneration, atrophy, or hypertrophy.
本研究调查了一种仅使用肌肉长度（L(M)）、最大解剖横截面积（ACSA(max)）和特定肌肉形状因子（p）来预测股四头肌体积的方法的适用性。L(M)、ACSA(max)、肌肉体积和p是从20名女性和17名男性排球运动员的股中间肌（VI）、股外侧肌（VL）和股内侧肌（VM）的磁共振图像中获取的。使用公式V(p) = p×ACSA(max)×L(M)，用平均p来预测肌肉体积（V(p)）。尽管男女运动员的肌肉尺寸存在显著差异，但p相似，VI、VL和VM的平均p分别为0.582、0.658和0.543。ACSA(max)的位置变异性较低，VI、VL和VM分别位于大腿长度的57%、60%和81%处。此外，测量的肌肉体积与预测的肌肉体积之间没有显著差异，均方根差异为5 - 8%。这些结果表明，股四头肌的肌肉形状与肌肉尺寸或性别无关，并且该预测方法可能足够灵敏，能够检测与退变、萎缩或肥大相关的肌肉体积变化。
