A40 シミュレーション解析による足関節底屈角度増加が水中ドルフィンキックのパフォーマンスに与える影響(水泳)

概要

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The purpose of this study was to investigate the relationship between plantar flexion angle and underwater dolphin kick performance by simulation model SWUM (SWimming hUman Model). The input data were obtained by the anthropometric and motion analysis using 2-D DLT method to compute unsteady fluid forces, buoyancy and gravity acting on the swimmer. To recreate the swimming dynamics on the simulation, fluid coefficients, used to calculate the unsteady fluid forces, were identified to minimize the difference between measured and simulated swimming velocity by the least-squares method. Simulations of the increased plantar flexion angle were executed with the optimal fluid coefficients. The results show the swimming velocity increased due to the increment of the thrust generated by the feet after increasing the plantar flexion angle. Furthermore, it was suggested that the flexibility of plantar flexion is important, though it is not a determinant factor of the underwater dolphin kick performance.
社団法人日本機械学会の論文
2007-11-13