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

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

doi:10.1186/s40779-020-00293-1

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

RESEARCH | Updated：2023-02-28

- Spine system changes in soldiers after load carriage training in a plateau environment: A prediction model research
- Military Medical Research Vol. 8, Issue 3, Pages: 373-383(2021)
- Affiliations：
  
  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
- Author bio：
  
  * ding1971316@buaa.edu.cn;
  zhaoyupumch@126.com
- Funds：
- DOI：10.1186/s40779-020-00293-1
  CLC：
- Published：2021-09
- Accepted：
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Qu et al.: Spine system changes in soldiers after load carriage training in a plateau environment: A prediction model research. Mil Med Res, 2020, 7: 63.
DOI：

Qu et al.: Spine system changes in soldiers after load carriage training in a plateau environment: A prediction model research. Mil Med Res, 2020, 7: 63. DOI： 10.1186/s40779-020-00293-1.

摘要

Abstract

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

to (9862.7±456.4) mm

and the functional CSA (FCSA) increased significantly from (8089.6±707.7) mm

to (8747.9±426.2) mm

after LCT (

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 (

0.05). Regarding the lumbar intervertebral foramen

the percentage of the effective intervertebral foraminal area of L

3/4

significantly decreased from 91.6%±2.0% to 88.1%±2.9% (

0.05). For curvature

the lumbosacral angle after LCT (32.4°±6.8°) was significantly higher (

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°) (

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 LCT

which revealed important pathophysiological mechanisms of lumbar spinal disorders in soldiers following short-term and high-load weight training. The injury prediction model of the spinal system confirmed that a load weight <60% of soldiers’ weight cannot cause acute pathological injury after short-term LCT

providing a reference supporting the formulation of the load weight standard for LCT.

关键词

Keywords

references

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