Isometric elbow flexion and extension joint torque measurements considering biomechanical aspects

Strength prediction for arbitrary postures presupposes correlations between joint angles and joint torques due to the length -- tension relationship of muscles. This paper investigates isometric elbow flexion and extension joint torque curves as a function of elbow flexion, shoulder flexion, and forearm rotation. Numerous authors have already examined elbow joint torque functions. However either only young or male subjects or old subjects with a high sample size but only one measurement posture were used. Alongside posture effects this study focuses on age and gender effects. Therefore four subject groups consisting of five young males, five young females, four old males, and three old females took part. Significant influences were obtained for elbow and shoulder flexion, age and gender. The results show that increasing shoulder flexion leads to decreasing elbow flexion joint torques whereas this effect gains in importance with increasing elbow flexion angles. Unlike previous studies no consistent results were found concerning the influence of forearm rotation. The extension torques were 79 Isometric elbow flexion and extension joint torque measurements considering biomechanical aspects (PDF Download Available). Available from: https://www.researchgate.net/publication/228535401_Isometric_elbow_flexion_and_extension_joint_torque_measurements_considering_biomechanical_aspects [accessed Mar 24, 2016].     «

Strength prediction for arbitrary postures presupposes correlations between joint angles and joint torques due to the length -- tension relationship of muscles. This paper investigates isometric elbow flexion and extension joint torque curves as a function of elbow flexion, shoulder flexion, and forearm rotation. Numerous authors have already examined elbow joint torque functions. However either only young or male subjects or old subjects with a high sample size but only one measurement posture...     »