During walking , oxygen consumption ( ml O2/kg/min ) and heart rate ( beats/min ) increased with a higher walking speed and a more proximal amputation .
During walking , oxygen consumption ( ml O2/kg/min ) and heart rate ( beats/min ) increased with a higher walking speed and a more proximal amputation .
OBJECTIVE To systematic ally review the literature on the metabolic costs of activities of daily living ( ADL ) in persons with a lower limb amputation ( LLA ) .
Energy expenditure of transfemoral amputees during floor and treadmill walking with different speeds
Background : Walking energy expenditure , calculated as the percent utilization of the maximal aerobic capacity , is little investigated in transfemoral amputees . Objectives : Compare the energy expenditure of  healthy participants ( control participants ) and transfemoral amputees walking with their respective  preferred walking speeds on the treadmill ( TPWS ) and floor ( FPWS ) . Study design : R and omized cross-over study . Methods : Oxygen uptake ( VO2 ) was measured when walking with the FPWS and TPWS . VO2max was measured by an incremental treadmill test . Results : Mean ± st and ard deviation VO2max of the transfemoral amputees and control participants were 30.6 ± 8.7 and 49.0 ± 14.4 mL kg−1 min−1 , respectively ( p < 0.05 ) . TPWS for the transfemoral amputees and control participants was 0.89 ± 0.2 and 1.33 ± 0.3 m s−1 , respectively ( p < 0.01 ) . FPWS for the transfemoral amputees and control participants was 1.22 ± 0.2 and 1.52 ± 0.1 m s−1 , respectively ( p < 0.01 ) . Walking on floor with the FPWS , the energy expenditure of the transfemoral amputees and control participants was 54 % and 31 % of VO2max , respectively ( p < 0.01 ) . Walking on the treadmill with the TPWS , the energy expenditure of the transfemoral amputees and control participants was 42 % and 29 % of the VO2max , respectively ( p < 0.05 ) . Conclusion : Energy expenditure is higher for the transfemoral amputees than the control participants , regardless of walking surface . There are minimal differences in energy expenditure between treadmill and floor walking for the control participants but large differences for the transfemoral amputees . Clinical relevance During walking , the transfemoral amputees expend a larger percentage of their maximal aerobic capacity than healthy participants . With a low VO2max , ordinary activities , such as walking , become physically more challenging for the transfemoral amputees than the control participants , and this may , in turn , have a negative effect on the walking range of the transfemoral amputees
During walking , oxygen consumption ( ml O2/kg/min ) and heart rate ( beats/min ) increased with a higher walking speed and a more proximal amputation .
During walking , oxygen consumption ( ml O2/kg/min ) and heart rate ( beats/min ) increased with a higher walking speed and a more proximal amputation .
OBJECTIVE To systematic ally review the literature on the metabolic costs of activities of daily living ( ADL ) in persons with a lower limb amputation ( LLA ) .