Arm Wrestling Exercise

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Recommended: Chapter 22 musculoskeletal system

The locations of electrode placement on the biceps brachii (upper arm) and pronator teres (forearm) were determined. The muscles were located by activating muscles of the hand through flexion and extension and noting the areas where the muscles develop tension in these positions. The first pair of electrodes were placed over the Pronator teres muscle on the anterior surface of the forearm. They were placed side by side, with 2-4 cm between them on the length of the muscle as it crosses the anterior forearm. The second pair of electrodes were placed over the Biceps brachii on the proximal left arm. One of the electrodes was placed approximately 4 cm above the elbow. Finally the second electrode was placed 2-4 cm above the first, proximal to the shoulder. An additional electrode was used as the ground. It was placed on the left lower abdomen above the waist. The recording lead wires were snapped to the appropriate positions.
The subject was instructed to get into the correct arm wrestling position, the neutral position, with an opponent before starting the recording. Their arms were placed perpendicular to the tabletop. The participant was instructed to slowly move their arm from the neutral
The participant and opponent were instructed to rest their forearms on the tabletop and clasp their hands in arm wrestling starting position. The recording was started and the subjects were instructed to begin arm wrestling after starting the recording. The EMG activities from the muscles of the arm were recorded while the subject is winning or losing during the arm wrestling match. The recording was marked appropriately when the subject’s arm changes from a winning or losing position. The match was halted when the subject and/or the opponent pinned the other’s hand to the table, thus winning the arm wrestling match. The recording was halted at this

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