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Muscle activation strategies in multiple muscle systems.

Multiple neural and mechanical factors need to be taken into account to understand muscle activation strategies during human movement. These factors include lateral force transmission via connective tissue, summation of forces across a joint, tendon compliance that influences muscle shortening/lengthening, and the activity of biarticular muscles that influences activation strategies in monoarticular muscles. The relevance of these factors to muscle activation strategy in multiple muscle systems is introduced.