True synergy in muscle contraction occurs when?

True synergy in muscle contraction occurs when different muscle groups coordinate effectively to perform a movement, which is best represented by the concept of all muscle groups working together. This cooperation allows for a more efficient and effective contraction, optimizing movement patterns and distributing the workload across various muscles.

In this context, synergy indicates that instead of one muscle working in isolation, multiple muscles play supportive roles, contributing to the desired outcome. While a muscle may contract to prevent secondary action, this does not encapsulate the broader idea of synergy, which is fundamentally about collaboration among various muscles. Hence, the understanding of synergy is intricately linked with the joint efforts of the muscle groups involved in a specific action.