Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (2): 329-332.doi: 10.3969/j.issn.1673-8225.2011.02.034

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Plantar pressure distribution in a sitting position under different tensile loads of the upper limbs  

Yang Jian-xin1, Ma Chao2, Zhao Zi-qiang1, Tan Cheng3, Zhang Chun-lin1   

  1. 1School of Mechanical Engineering, Beijing Institute of Technology, Beijing  100081, China
    2Key Laboratory of Modern Test & Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing  100192, China
    3China Astronaut Research and Training Center, Beijing  100094, China
  • Received:2010-07-01 Revised:2010-08-13 Online:2011-01-08 Published:2011-01-08
  • About author:Yang Jian-xin☆, Studying for doctorate, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China chitangzibi@hotmail.com
  • Supported by:

    the Foundation for Key Laboratory Development of Beijing Municipal Education Commission, No. KF20091123204

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Abstract:

BACKGROUND: Plantar pressure measurement has been widely used in biomechanical gait studies, which mainly concentrated on time features and plantar pressure distribution of people at normal walking or wear different kinds of shoes.
OBJECTIVE: To explore the plantar pressure distribution in a sitting position under different tensile loads of the upper limbs. 
METHODS: Plantar pressure distribution signals of 40 sitting subjects with different tensile load were recorded using Seat 16/53 mFLEX test system. The plantar pressure distribution of different age and gender under 30%, 50%, 80%, and 100% maximal voluntary contraction (MVC) conditions were analyzed.
RESULTS AND CONCLUSION: Under different tensile loads, the plantar pressure value of young male was obviously higher than that of females (P < 0.05). But, the differences were not significant in middle-aged group (P > 0.05). Regardless of gender differences, all participants were shown inhomogenous stress around the plantar. In different load, youth male right plantar pressure was smaller than left, but the young female’s right plantar pressure was significantly greater than the left (P < 0.05). The left plantar pressure of the middle-aged group changed little at 30-80% MVC, but the difference was obviously decreased in 100% MVC (P < 0.05). The results demonstrated that both age and sex affect human plantar pressure changes under different tensile loads.

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