A Laboratory Report on the Study of Shoulder Joint Torque

3165 Words13 Pages
Introduction A study was conducted to collect and analyse data concerning joint torque at different weight bearing capacities, specifically the torque of the shoulder joint. The subject performed a forward flexion of the shoulder (with the elbow fully extended and palms facing up) holding 12kg, 14kg, 15kg, 16kg and 20kg weights respectively. The movement was captured via a high definition camera, set in video mode, with the camera settings adjusted accordingly. Prior to the video capture, the subject’s characteristics (segment lengths, body mass and height) were taken. Once the information was gathered, using the ‘Kinovea’ software program, the data was analysed and interpreted. Via the use of the Kinovea software program, screenshots can be taken and shoulder position in space could be calculated along with segment lengths, centre of mass positions, joint centre length and angle of the line of pull. With the interpretation of this additional data, shoulder joint torque and anterior deltoid force can be determined via the use of scaling factors and biomechanical equations. Once calculated, the results displayed greater torque production whilst holding the 12 kilogram plate, and least torque production holding the 20 kilogram weight. The summary of these results demonstrate that the greater the load of force acting upon a joint, the greater the torque required moving that force in the opposite direction. Hence the less torque generated by that joint, being additionally due to its position in space. This can vastly be related correspondingly to sport science and the demands particular sports have on the body in relation to joint torque production and their capabilities. Method The objective of this study was to obtain raw joint data and interpret the results to an applied relevant setting. In the exercise, the participant must hold a weight in their preferred

More about A Laboratory Report on the Study of Shoulder Joint Torque

Open Document