Influence of carrying system on human gait and fatigue
10.3760/cma.j.issn.1001-9391.2019.10.006
- VernacularTitle: 背负系统对人体步态及疲劳的影响
- Author:
Lufang ZHANG
1
;
Yujia ZHU
;
Zhichuan TANG
Author Information
1. School of Design Zhejiang University of Technology, Hangzhou 310023, China
- Publication Type:Journal Article
- Keywords:
Gait;
Fatigue;
Plantar pressure;
Surface electromyography;
Carrying system
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2019;37(10):746-751
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the influence of different variable combinations of the carrying system on gait and muscle fatigue during weight-bearing walking on both shoulders and back, and to optimize daily carrying experience.
Methods:From September to December, 2018, 6 male college students were selected as subjects; the electromyographic signal of the anterior tibial muscle and plantar pressure were measured during weight-bearing walking under six different variable combinations of the carrying system (with the three variables of gravity center, single or double shoulders, and waist cushion), and a subjective evaluation test was performed for the degree of fatigue. The electromyographic data and plantar pressure data were processed and compared to evaluate behavior and fatigue.
Results:Different variable combinations of the carrying system had significant influence on the degree of fatigue and gait (P<0.05). Both subjective and objective analyses found that the carrying system with different heights of gravity center and single-or double-shoulder carrying mode had great influence on human fatigue and walking gait, while the hardness of waist cushion had little influence. Compared with the other groups, the group with a high gravity center, a double-shoulder carrying mode, and a soft waist cushion had a significantly smaller slope of average electromyographic amplitude, a significantly larger slope of median frequency, and a significantly lower degree of plantar pressure curve disorder.
Conclusion:The carrying system with a relatively high gravity center, a double-shoulder carrying mode, and a soft waist cushion can significantly relieve fatigue, with low influence on walking gait.
