H9 Mechanical properties of the support leg joints in running

Abstract

The purpose of this stUdy was tO quantifY the charaCteristics ef the support leg jo 血 tS in running by using the mechanical properties ． The st雌hess and the vbcos 貢y ooe伍 dent were used to obtain joint characbe 由 tics ， Four subjecrts ' 3 ・ D images 伽 m motion analyses and i脚 d rea 〔 炬 on 飾rces we rded by Vlcon motion analysiS system and two fbrcepiadi ) mls ． The angular velocities which conthbute iX ) ve 雌 cal direCtiOn movement were extraeted fU ) m joint ． angular velocities using Jaoobin Matrix ． Joint stifihess and v 艪 i 砂 ooe伽 ent were ( 烈 c 虹a艶 d 加 m the joint torque and the angu vel ity and a 沁 w1 罐ch oontribute tO ver し i(烈 direction movement by the equation of the tr )rque 血 jo 血 t and the evaluation fUnct ion． Ifthe oDeHicients we 祀 nega 紅ve values ， compensatien tOrques were rep1 且 ced with them ． In comparison amo the subje 〔 重 s who have difillrent runni 皿 g fbrms or between the shod and bare conditions ， the d丗 brences wele observed at も he joj 皿 も mechanical