Abstract
Results The following are the findings. Firstly, the total time taken for forward breakfall of the martial arts showed 1.53±0.04 s for skilled, and 1.41±0.06s for unskilled subjects (p<.01). Second, during forward breakfall of the martial arts, the skilled subjects came up with significantly faster impact velocity in the primary point of impact (E2) (p<.001), but the unskilled subjects showed significantly faster impact velocity in the secondary point of impact (E3) (p<.001). Third, the forward breakfall of the martial arts did not show any difference between left and right side in the reaction force, but unskilled subjects proved a significantly greater forward and backward reaction force in the secondary point of impact(E3) both right and left sides (right: p<.01, left: p<.001). The skilled subjects showed a significantly greater vertical reaction force in the primary point of impact (E2) (right: p<.001, left: p<.001), and unskilled subjects showed a larger vertical reaction force in the secondary point of impact (E3), respectively (right: p<.01, left: p<.05).
Highlights
The purpose of this study was to provide basic quantitative data to minimize the injury occurring during forward breakfall by the comparative analysis of biomechanical factors through 3D motion analysis, analysis of ground reaction force, and EMG analysis of the forward breakfall of the martial arts targeting 10 skilled and 10 unskilled subjects
The floor reaction force and three-dimensional motion analysis program was used for the Kwon3dXP
Research which is freely available for redistribution
Summary
The purpose of this study was to provide basic quantitative data to minimize the injury occurring during forward breakfall by the comparative analysis of biomechanical factors through 3D motion analysis, analysis of ground reaction force, and EMG analysis of the forward breakfall of the martial arts targeting 10 skilled and 10 unskilled subjects. Correlation between radiography and motions of foot and ankle during gait using 3D multisegment foot model Dong Yeon Lee*, Sang Gyo Seo, Ji-Beom Kim, Sung Ju Kim, In Ho Choi
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