Muscle force cannot be directly inferred via muscle activity

Can muscle force truly be inferred from measuring muscle activation?

Assessing neural drive using electromyography (EMG) does not infer the level of muscle force produced in a contraction. Despite the fact that such limitations are widely acknowledged, this issue has received minimal attention within the clinical literature. The following commentary exposes these limitations within the context of patellofemoral pain (PFP); more specifically, the proposed aetiology consisting of an imbalance in force production between the vastus medialis (VM) and vastus lateralis (VL) muscles.


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