Lab 13: iWorx EMG Activity of Antagonist Muscles: wrist Flexion and Extension and Arm Wrestling
Anterior surface leads for flexion/extension
Red + closest to elbow over flexors Black - most distal to elbow over flexors ground intermediate and lateral to the red and black leads
Percent diff in abs. int. in agonist vs antagonist
agonist abs. int - antagonist/ agonist
which muscles were agonist during flexion
anterior muscles
Antagonist
muscles that work in opposition to each other, opposes desired movement
Agonist
muscles that work together, gives desired movement
which muscles were agonist during extension
posterior muscles
Lead placement for arm wrestling
red - lateral edge of anterior surface of forearm over the pronator teres, close to wrist black - middle of anterior surface of forearm closer to elbow and medial to red white - on biceps brachii near elbow brown - on biceps brachii proximal to white
Posterior surface leads for flexion/extension
white +2 closest to elbow over extensors brown -2 more distal to elbow over extensors