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 .
Grip and knee extension muscle strength reflect a common construct among adults.
INTRODUCTION Both grip and knee extension strength are often used to characterize overall limb muscle strength . We sought to determine if the measures actually reflect a common construct . METHODS The isometric grip and knee extension strength of 164 healthy men and women ( range , 18 - 85 years ) were measured bilaterally using st and ard procedures . Pearson correlations ( r ) , Cronbach alpha , principal components analysis , and multiple regression/correlation were used to investigate the dimensionality of the measures . RESULTS Left and right grip forces and knee extension torques were highly correlated , internally consistent , and loaded on a single component . Gender and age explained the variance in both measures , but height added to the explanation of grip strength , whereas weight added to the explanation of knee extension strength . CONCLUSIONS Among healthy adults , grip and knee extension strength reflect a common underlying construct . The measures , however , are affected differently by height and weight
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 .