Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (24): 3900-3905.doi: 10.3969/j.issn.2095-4344.2017.24.022

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Gait characteristics of obese children wearing school bags during walking

Yan Song-hua1, 2, Wang Lu3, Liang Xiu-qiao4, Zhang Kuan1, 2   

  1. 1School of Biomedical Engineering, 2Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing 100069, China; 3Beijing Children’s Hospital, Capital Medical University, Beijing 100045, China; 4Yulin Primary School of Fengtai District, Beijing 100069, China
  • Revised:2017-03-13 Online:2017-08-28 Published:2017-08-30
  • About author:Yan Song-hua, M.D., Associate professor, Master’s supervisor, School of Biomedical Engineering, Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application, Capital Medical University, Beijing 100069, China
  • Supported by:

    the Natural Science Foundation of Beijing, No. 7152018; the Program of Cultivating Young Talents in Universities of Beijing, No. CIT&TCD201404177; the Major Project of Beijing Municipal Science & Technology Commission, No. Z151100003715001

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Abstract:

BACKGROUND: Children usually wear school bags when walking, and overweight school bags do harm to the lower extremity and foot, thus affecting the child development.

OBJECTIVE: To investigate the effect of obesity on gait characteristics of children wearing school bags during walking.
METHODS: Forty pupils were enrolled in accordance with body mass index and “China school-age children and adolescents overweight, obesity screening body mass index classification standard”, including 20 obese children (body mass index: (28.13±3.4) kg/m2) and 20 non-obese ones (body mass index: (17.44±1.57) kg/m2). The gait parameters of children wearing school bags during walking were measured using a 2-m Footscan Plantar Pressure Plate System from RSscan International.
RESULTS AND CONCLUSION: Compared with the non-obese children, the peak pressures under the metatarsal heads II-V, midfoot and heel lateral were significantly higher in obese children wearing school bags during walking (P < 0.05). The time to peak pressures under the toes II-V, the metatarsal heads IV, V and midfoot was also significantly higher (P < 0.05). In addition, the arch index for the foot, and right foot axis angle were significantly larger in the obese children as compared with the non-obese children (P < 0.05). To conclude, obese children wearing school bags during walking have weaker walking stability with flatter foot pattern, the larger foot axis angle and dynamic plantar pressure distribution changes compared with non-obese children, which can result in foot damage.

 

Key words: Obesity, Child, Gait, Tissue Engineering

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