Work so far.
Bicep curl – · With the bicep curl, the concentric (work) phase occurs when the dumbbell is raised towards the shoulders, and the eccentric phase is when the dumbbell is lowered back down. · For the biceps curl, the concentric (up) phase occurs when the dumbbell is lifted towards the shoulder. · For the biceps curl, the muscle that causes elbow flexion is the biceps. Please note that these same muscles are worked for both the concentric and eccentric phases – they get shorter during the concentric phase and longer during the eccentric phase. · For the biceps curl, the antagonist of the biceps is the triceps. Squat – · the concentric phase occurs when you raise yourself from the squat position (i.e. stand up) because you are pushing your body weight upwards against gravity; and working ecc...