Why the study?
Does upper motoneuron lesion alter motor unit firing rate and contractile properties in the tibialis anterior muscle of hemiparetic patients?
Population
15 hemiparetic patients
Comparison
Observation of paretic and nonparetic tibialis… vs Control TA muscles and nonparetic TA muscles
Design
Cross-sectional
Authors
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Altered type I fiber predominance and properties in paretic TA may contribute to weakness; hypothesis-generating for targeted rehabilitation after stroke.
Does upper motoneuron lesion alter motor unit firing rate and contractile properties in the tibialis anterior muscle of hemiparetic patients?
Upper motoneuron lesions lead to altered motor unit firing rates and muscle fiber composition, with paretic muscles showing slower type I fibers and nonparetic muscles showing increased type I expression due to compensatory activity.
Frontera et al. (1997) studied this question.
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