Key result
Overuse of tibialis anterior muscle fibres due to prior polio or L5 root lesion was associated with lower concentric peak torque (6-24 Nm vs 15-34 Nm; p<0.01) compared to healthy controls.
Why the study?
Does long-term overuse of residual muscle fibres due to prior polio or L5 root lesion alter torque-velocity relation and muscle fibre characteristics compared to healthy controls?
Case-Control
Does long-term overuse of residual muscle fibres due to prior polio or L5 root lesion alter torque-velocity relation and muscle fibre characteristics compared to healthy controls?
p-value: p=< 0.01
Long-term overuse of residual muscle fibers in patients with prior polio or L5 root lesions leads to histochemical changes (increased type 1 fibers) without parallel changes in contractile properties at higher velocities.
No takes yet. Share an insight, caveat, or question.
Should not yet change rehab protocols for post-polio or L5-lesion patients; leaves open effects of fiber shifts on function and training response.
Tollbäck et al. (2020) conducted a case-control in Prior polio or L5 root lesion. Overuse of tibialis anterior muscle fibres due to prior polio or L5 root lesion vs. Age and sex matched healthy subjects was evaluated on Concentric peak torque at an angular velocity of 30 degrees/s (p=< 0.01). Overuse of tibialis anterior muscle fibres due to prior polio or L5 root lesion was associated with lower concentric peak torque (6-24 Nm vs 15-34 Nm; p<0.01) compared to healthy controls.
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