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← Human Body & HealthWhy does prolonged muscle immobilization lead to decreased force generation during subsequent contractions?
A)Decreased glycolytic enzyme activity
B)Increased motor neuron excitability
C)Sarcomere number decreases in series✓
D)Elevated intramuscular calcium buffering
💡 Explanation
Muscle immobilization causes sarcomere number to decrease in series because the muscle adapts to the shortened length, optimizing force production at that length through sarcomere remodeling. Therefore, force generation decreases across the full range of motion, rather than a change in enzyme activity or motor neuron function.
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