Conclusions : Age-related differences support the impact of stroke-related sarcopenia as a contributor to hemiparetic muscle dysfunction .
Abstract Background : Despite extensive study of the impact of stroke on muscle and functional performance , questions remain regarding the extent to which changes are due to the neurological injury vs. age-related loss of morphology and force production .
Objectives : To synthesize available evidence describing post-stroke changes in lower extremity muscle size and strength compared to healthy adults .
Upper motor neuron lesions: their effect on muscle performance and appearance in stroke patients with minor motor impairment.
OBJECTIVE To evaluate muscular performance and appearance in patients with prior stroke who were ambulatory . DESIGN Nonr and omized study . SETTING University hospital laboratory . SUBJECTS Sixteen persons ( 11 men , 5 women ) with minor motor impairments , 6 to 24 months after stroke , were included . As reference , data were used from a population -based sample of 144 men and women . MAIN OUTCOME MEASUREMENTS Muscle performance was evaluated using a  Kin-Com dynamometer  in both the affected and the nonaffected leg . Peak isometric strength was measured at a 60 degree angle in both extension and flexion . Maximal isokinetic strength was measured at 60 degrees/sec and at 180 degrees/sec . Endurance was evaluated during isometric and dynamic knee extensions . Muscle biopsies were taken on nine patients and muscle tissue areas were determined with computed tomography . RESULTS The affected leg was weaker but not different in relative endurance compared with the nonaffected side . The performance of the nonaffected side was somewhat lower than that of a matched reference population . No major difference in fiber composition between the affected and nonaffected legs was noted , except for a lower degree of capillarization in the affected leg . CONCLUSION In well-functioning stroke patients with good motor performance , further muscle training that includes resistance exercise might be indicated
Conclusions : Age-related differences support the impact of stroke-related sarcopenia as a contributor to hemiparetic muscle dysfunction .
Abstract Background : Despite extensive study of the impact of stroke on muscle and functional performance , questions remain regarding the extent to which changes are due to the neurological injury vs. age-related loss of morphology and force production .
Objectives : To synthesize available evidence describing post-stroke changes in lower extremity muscle size and strength compared to healthy adults .