Biomechanical analysis demonstrates antagonistic trunk muscle coactivation maintains lumbar stability in healthy individuals, highlighting neuromuscular control in spine protection.
This study demonstrated that antagonistic trunk flexor-extensor muscle coactivation was present around the neutral spine posture in healthy individuals. This coactivation increased with added mass to the torso. Using a biomechanical model, the coactivation was explained entirely on the basis of the need for the neuromuscular system to provide the mechanical stability to the lumbar spine.
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Cholewicki et al. (1997) studied this question.
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