Coactivation Rate Contraction

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The electrocardiogram measures the contractions of a heart and heart contractions are regular with muscle fibers activated in a certain order. The skeletal muscles that were measured were of many muscle fibers and did not occur all in a certain order but with the muscle fibers out of sync with one another. The EMG trace showed that there was a larger contraction of the biceps when more weight was added as the amplitude of the EMG trace increased when weight was added. Coactivation is when a pair of antagonist muscles are operative in contradiction each other, for example, the biceps and triceps. When a bicep is activated to contract, the tricep relaxes and vice versa Yes, as the bicep is unable to lower the lower arm. Coactivation is necessary
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