Spine system changes in soldiers after load carriage training in a plateau environment: A prediction model research  

作　　者：Hao Qu Ling-Jia Yu Ju-Tai Wu Gang Liu Sheng-Hui Liu Peng Teng Li Ding Yu Zhao 

机构地区：[1]Department of Orthopaedics,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100730,China [2]Department of Orthopaedics,Beijing Friendship Hospital,Beijing 100050,China [3]Department of Orthopaedics,the Affiliated Hospital of Xuzhou Medical University,Xuzhou 221006,Jiangsu,China [4]Department of Radiology,Qinghai Red Cross Hospital,Xining 810000,Qinghai,China [5]School of Biological Science and Medical Engineering,Beihang University,Beijing 100191,China [6]National Laboratory of Human Factors Engineering,China Astronaut Research and Training Center,Beijing 100094,China

出　　处：《Military Medical Research》2021年第3期373-383,共11页军事医学研究（英文版）

基　　金：supported by the National Key Research and Development Program of China (2018YFB1307603);the National Natural Science Foundation of China (8174100706)。

摘　　要：Background: Low back pain is the most common spinal disorder among soldiers, and load carriage training(LCT) is considered the main cause. We aimed to investigate changes in the spine system of soldiers after LCT at high altitudes and the change trend of the lumbar spine and surrounding soft tissues under different load conditions.Methods: Magnetic resonance imaging scans of the lumbar spines of nine soldiers from plateau troops were collected and processed. We used ImageJ and Surgimap software to analyze changes in the lumbar paraspinal muscles, intervertebral discs(IVDs), intervertebral foramina, and curvature. Furthermore, the multiple linear regression equation for spine injury owing to LCT at high altitudes was established as the mathematical prediction model using SPSS Statistics version 23.0 software.Results: In the paraspinal muscles, the cross-sectional area(CSA) increased significantly from(9126.4±691.6) mm~2 to(9862.7±456.4) mm~2, and the functional CSA(FCSA) increased significantly from(8089.6±707.7) mm~2 to(8747.9±426.2) mm~2 after LCT(P<0.05);however, the FCSA/CSA was not significantly different. Regarding IVD, the total lumbar spine showed a decreasing trend after LCT with a significant difference(P<0.05). Regarding the lumbar intervertebral foramen, the percentage of the effective intervertebral foraminal area of L3/4 significantly decreased from 91.6%±2.0% to 88.1%±2.9%(P<0.05). For curvature, the lumbosacral angle after LCT(32.4°±6.8°) was significantly higher(P<0.05) than that before LCT(26.6°±5.3°), while the lumbar lordosis angle increased significantly from(24.0°±7.1°) to(30.6°±7.4°)(P<0.05). The linear regression equation of the change rate, ΔFCSA%=–0.718+23.085×load weight, was successfully established as a prediction model of spinal injury after LCT at high altitudes.Conclusion: The spinal system encountered increased muscle volume, muscle congestion, tissue edema, IVD compression, decreased effective intervertebral foramen area, and increased lumbar curvature after

关 键 词：SPINE Load carriage Paraspinal muscle Intervertebral disc Prediction model 

分 类 号：R826.64[医药卫生—临床医学]