Question

The difference in the level of excitation between elbow flexion and elbow extension in the sagittal plane about a transverse axis

Answer 1

In bisecp curls which produces flexion at elbow ,the biseps muscle is the angonist . In biscep curl ,bicep is the angonist on the way up when it contracts concentrically and on the way down when it contracts ecentrically

During elbow flexation where bicep is angonist the tricep muscle is the antagoinst. While the agonist contravts causing movment to occur .the antagonist typically relaxes as not to impede the agonist. If the load is heavy when the load is lowered from top position the antagonist tricep muscle would produce sufficent amount of tension to control the movements as weight lowers this helps to ensure that gravity doesnot accelerate the movement causing damage tonelbow jpintb. The tricep becomes the agonist and the bicep the the antagonist when the elbow extends against gravity .