Kinematic and kinetics of judo
Isokinetic dynamometry testing on male university sport and exercise science students looking at Hamstring/Quadriceps ratio, peak torque, peak torque to body mass ratio and power.
Abstract
Isokinteic dynamometry testing is important in monitoring injury and performance. There are few studies that have looked at male university sport and exercise science students bilateral difference of the hamstrings and quadriceps at 60˚s and 180˚s.The purpose of the study was to look at injury and performance of the hamstrings and quadriceps at 60˚s and 180˚s on the dominant and non-dominant side. Looking at the hamstring to quadriceps muscular ratio (H/Q%), average peak torque, average peak torque to body mass ratio (PT/BM) and average power. The study uses 12 participants (age 21.3±1.2yrs, height 1.8±0.1m and mass 77±8.9kg) randomly picked from 55 sport and exercise science. No significant main effect for limb dominance in peak torque of the quadriceps (P = 0.200), However, there was a significant difference (P = 0.005) for hamstrings peak torque on the non-dominant side. No significant main effect for velocity in peak torque of the quadriceps and hamstrings at 60°s (P = 0.200). However, there was a significant difference (P = 0.021) for hamstrings peak torque at 180°s. The study shows there is peak torque-velocity, peak torque-power and peak torque-H/Q ratios. There is no difference in dominance for each independent variable.
Introduction
Isokinetic is the velocity of a movement that is controlled and maintained by a device which creates a dynamic muscular contraction (Thistle et al, 1967). Isokinetic testing enables precise muscle strength assessment in athletes. Advantages of isokinetic testing is that it can isolate weak muscle groups, it allows torque, work and power to become quantified data and it allows maximal resistance throughout the whole range of movement being exercised. (Perrin, 1993).
Bracic et al (2011) used the isokinetic dynamometer to find the
Abstract
Isokinteic dynamometry testing is important in monitoring injury and performance. There are few studies that have looked at male university sport and exercise science students bilateral difference of the hamstrings and quadriceps at 60˚s and 180˚s.The purpose of the study was to look at injury and performance of the hamstrings and quadriceps at 60˚s and 180˚s on the dominant and non-dominant side. Looking at the hamstring to quadriceps muscular ratio (H/Q%), average peak torque, average peak torque to body mass ratio (PT/BM) and average power. The study uses 12 participants (age 21.3±1.2yrs, height 1.8±0.1m and mass 77±8.9kg) randomly picked from 55 sport and exercise science. No significant main effect for limb dominance in peak torque of the quadriceps (P = 0.200), However, there was a significant difference (P = 0.005) for hamstrings peak torque on the non-dominant side. No significant main effect for velocity in peak torque of the quadriceps and hamstrings at 60°s (P = 0.200). However, there was a significant difference (P = 0.021) for hamstrings peak torque at 180°s. The study shows there is peak torque-velocity, peak torque-power and peak torque-H/Q ratios. There is no difference in dominance for each independent variable.
Introduction
Isokinetic is the velocity of a movement that is controlled and maintained by a device which creates a dynamic muscular contraction (Thistle et al, 1967). Isokinetic testing enables precise muscle strength assessment in athletes. Advantages of isokinetic testing is that it can isolate weak muscle groups, it allows torque, work and power to become quantified data and it allows maximal resistance throughout the whole range of movement being exercised. (Perrin, 1993).
Bracic et al (2011) used the isokinetic dynamometer to find the