Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： To investigate whether high-definition tDCS ( HD-tDCS) of the primary motor cortex ( Ml ) canaffect dynamic postural control in the Y-balance task of healthy young adults. Twelve healthy adult maleswere recruited , and a randomized ,crossover experimental design was used in this study.The effect of HD-tDCS on dynamic postural control was assessed using Y-balance. Parameters included the reach distanceand the center of pressure ( COP)displacement and average velocity in the Y-balance task. Y-balancetasks were assessed at baseline and immediately after tDCS.Two-way repeated measures ANOVA examined the effect of tDCS.Results show that after HD-tDCS of the Ml ,the reach distance in the anterior directionof the right leg Y-balance task significantly increased by 2.84% ;COP of medial-lateral displacement andCOP displacement path length significantly decreased by 20% and 16% in the posteromedial direction,and COP of medial-lateral displacement significantly decreased by 20% in the posterolateral direction ofthe left leg Y-balance task.This study provides certain evidence that HD-tDCS improves dynamic posturalcontrol in healthy young adults.
Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： Nowadays , with the development of various running shoes and the progress in nunning shoe tech-nology , the incidence of nunning injury still remains high.Whether traditional running shoes ( motion con-trol shoes , cushioning shoes , and neutral stabilizers) or minimalist shoes , which have made a comeback inrecent years, can reduce injury rates and improve athletic performance still remains a great controversy.This paper classifies different nunning shoes and reviews the effects of footwear biomechanics.The aim ofthe review is to summarize the biomechanical mechanisms of different footwear and its effects on lower ex-tremity injuries and performance in order to provide suggestions on running shoes selection and prevent/ re-duce the risk of running-related injuries. Studies have shown that even customizing traditional cushioningshoes to fit the foot type does not reduce the incidence of nunning-related injuries.Minimalist shoes have the advantages of reducing joint torque and patella contact stress and strengthening the mechanical proper-ties of intrinsic foot muscles and Achilles tendons. One suggestion is that it is necessary to perform thegradual transformation project and try to coordinate with the strengthening exercises of lower limb muscles,such as foot core exercise.Future studies should focus on the underlying biomechanical mechanisms ofrunning shoes and lower limb injury , which can provide theoretical basis for reducing and preventing lowerlimb injuries and offer more suggestions for runners to choose their own running shoes.
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