Subjects: Mechanics >> Applied Mechanics submitted time 2023-03-20 Cooperative journals: 《应用力学学报》
Abstract： This study aimed to explore whether there are sex-based differences in the morphological andmechanical properties of the gastrocnemius muscle- tendon unit ( gMTU ). We recruited 18 healthy maleand 18 healthy female adults with no training experience or no regular exercise habits. The ultrasonographysystem and digital MyotonPro were used to measure the architectural and mechanical properties of thegMTU，respectively.An independent t-test was utilized to quantify the sex-based differences in themorphological and mechanical properties of the gMTU . The results are as follows ; The MG pennation angleand thickness were greater in the males than in the females , while no significant gender difference wasobserved in MG fascicle length; the males possessed greater length and CSA of the AT than females; thefemales possessed lower MG vertical stiffness and greater logarithmic decrement than the males;and therewas no significant difference in AT vertical stiffness and logarithmic decrement between the males and the females. Thus , morphological and mechanical properties of the gMTU significantly differ between the twogenders.
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.
Hits
YES
Hits
Downloads
Comment