Savage R A, Millerchip R, Whitehouse G H, Edwards R H
Magnetic Resonance Research Centre, University of Liverpool, England.
Eur J Appl Physiol Occup Physiol. 1991;63(3-4):265-8. doi: 10.1007/BF00233859.
This paper considers an internal standard of lumbar muscularity. The cross-sectional areas (Acs) of the intervertebral disc and paraspinal muscles were measured in 147 working men from an axial magnetic resonance image passing through the L3-4 disc. Lumbar muscularity was expressed by two ratios; the ratio between the Acs of the right psoas and the Acs of the intervertebral disc (P:disc), and the ratio between the combined Acs values of the right erector spinae and quadratus lumborum and the Acs of the disc (ESQL:disc). When the subjects were divided into two age groups (76 aged 20-30 years and 71 aged 31-58 years) lumbar muscularity was found to be significantly greater (P less than 0.001) in the younger age group (P:disc = 0.8, SD 0.2; ESQL:disc = 2.0, SD 0.3) than in the older age group (P:disc = 0.7, SD 0.2; ESQL:disc = 1.8, SD 0.3). Lumbar muscularity was not significantly affected by occupation or by a history of low back pain.
本文研究了腰椎肌肉量的内部标准。从通过L3 - 4椎间盘的轴向磁共振图像中，测量了147名在职男性的椎间盘和椎旁肌的横截面积（Acs）。腰椎肌肉量通过两个比率来表示：右腰大肌的Acs与椎间盘的Acs之比（P:椎间盘），以及右竖脊肌和腰方肌的Acs总和与椎间盘的Acs之比（ESQL:椎间盘）。当将受试者分为两个年龄组（76名年龄在20 - 30岁之间，71名年龄在31 - 58岁之间）时，发现年轻年龄组（P:椎间盘 = 0.8，标准差0.2；ESQL:椎间盘 = 2.0，标准差0.3）的腰椎肌肉量显著大于（P小于0.001）年长年龄组（P:椎间盘 = 0.7，标准差0.2；ESQL:椎间盘 = 1.8，标准差0.3）。腰椎肌肉量不受职业或腰痛病史的显著影响。
