In claudication patients , SE is more effective than UE at improving maximal walking and claudication distances , yet there is no difference in general quality of life or patient-reported community-based walking .
BACKGROUND Supervised exercise ( SE ) is widely accepted as an effective therapy for intermittent claudication ( IC ) , but its use is limited by cost .
Unsupervised exercise ( UE ) represents a less costly alternative .
We assessed the comparative effectiveness of SE vs UE in patients with IC .
Skeletal muscle adaptation in response to supervised exercise training for intermittent claudication.
OBJECTIVES There is evidence that the improvement following supervised exercise for claudication results from skeletal muscle adaptation . The myosin heavy chain ( MHC ) determines muscle fibre type and therefore efficiency . Immunohistochemical analysis has failed to take account of hybrid MHC expression within myofibres . This study sought evidence of differential MHC protein expression following supervised exercise for claudication . DESIGN 38 claudicants were recruited . Subjects undertook a three-month supervised exercise programme .  Controls were patients awaiting angioplasty for claudication . MATERIAL S AND METHODS Subjects underwent paired gastrocnemius biopsy . Relative expression of MHC proteins was determined by SDS-PAGE electrophoresis . Non-parametric data is presented as median with the inter-quartile range and parametric as the mean ± st and ard deviation . RESULTS Upon completion of the exercise programme there was a 94 % increase ( 124 ( 106 - 145 ) to 241 ( 193 - 265 ) metres , p = 0.002 ) in maximum walking distance , which was not evident in the control group . An 11.1 % ( p = 0.02 ) increase in MHC I expression was observed in the exercise but not the control group ( 34.3 % ± 6.8 to 45.4 % ± 4.4 ) . There was a positive correlation between the change in MHC I expression and the improvement in claudication distance ( r = 0.69 , p < 0.05 ) . CONCLUSIONS Supervised exercise training for claudication results in an increase in the proportion of MHC type I expression within the symptomatic gastrocnemius muscle
In claudication patients , SE is more effective than UE at improving maximal walking and claudication distances , yet there is no difference in general quality of life or patient-reported community-based walking .
BACKGROUND Supervised exercise ( SE ) is widely accepted as an effective therapy for intermittent claudication ( IC ) , but its use is limited by cost .
Unsupervised exercise ( UE ) represents a less costly alternative .
We assessed the comparative effectiveness of SE vs UE in patients with IC .