Analysis of strength and elastic strain of neck muscle in the flying personnel with neck pain before and after neck muscle training
10.3760/cma.j.cn113854-20210420-00066
- VernacularTitle:颈痛飞行人员颈肌训练前后颈肌强度及弹性应变值分析
- Author:
Xue LI
1
;
Yongchun WANG
;
Jinying LIU
;
Dingzhang CHEN
;
Xiangwu FEI
;
Huijun YU
;
Xiaojian CHEN
;
Jiaojie LI
;
Jianhua XU
;
Danli YOU
;
Yanhong GUO
;
Wei HUANG
Author Information
1. 空军杭州特勤疗养中心疗养二区 310007
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Muscle strength;
Neck pain;
Flying personnel
- From:
Chinese Journal of Aerospace Medicine
2022;33(1):18-23
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the relationship between neck muscle strength and elastic strain of flying personnel by comparing the changes of neck muscle elastic strain values and neck muscle strength before and after neck muscle training in flying personnel with neck pain.Methods:By using CME-1 neck muscle strength trainer, 56 flying personnel were trained under isometric and changeable velocity and resistant (CVR) training mode for 2 weeks. The neck muscle strength and neck muscle elastic strain values before and after training were compared.Results:The elastic strain values of longus colli, splenius capitis and levator scapula were significantly increased by neck muscle training ( t=4.154, 2.348, 2.745, P<0.001, P=0.040, 0.006). The relative growth rate of the average elastic strain values of longus colli, splenius capitis and levator scapula after training was 13.75%, 4.18% and 2.8%, respectively. After neck muscle training, the average maximum neck muscle strength and average 10 s maximum impulse in the directions of forward flexion, backward extension, left flexion and right flexion were higher than those before training, and the difference was statistically significant ( t=3.364-8.284, all P<0.01); The relative growth rate of the average maximum neck muscle strength in each direction was 39.3%, 34.6%, 35.2% and 28.4%, respectively, and the relative growth rate of the average 10 s maximum impulse was 51.4%, 33.6%, 42.7% and 34.5%, respectively. The elastic strain values of levator scapula and longus colli were negatively correlated with the average maximum muscle strength of anterior flexor ( r=-0.281, -0.387, P=0.036, 0.004). Conclusions:Neck muscle training can effectively improve the strength of neck muscle groups and the elastic strain of some muscle groups. The elastic strain values of levator scapula and longus colli are negatively correlated with the average maximum muscle strength of anterior flexor, those suggesting that neck muscle training has a certain effect on enhancing the activity of anterior flexor muscle groups and maintaining the physiological lordosis of cervical spine.
