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 ) .
Long-term clinical evaluation of the automatic stance-phase lock-controlled prosthetic knee joint in young adults with unilateral above-knee amputation
Abstract Purpose : The purpose of this study was to clinical ly evaluate the automatic stance-phase lock ( ASPL ) knee mechanism against participants ’ existing weight-activated braking ( WAB ) prosthetic knee joint . Method : This prospect i ve crossover study involved 10 young adults with an above-knee amputation . Primary measurements consisted of tests of walking speeds and capacity . Heart rate was measured during the six-minute walk test and the Physiological Cost Index ( PCI ) which was calculated from heart rate estimated energy expenditure . Activity was measured with a pedometer .  User function and quality of life were assessed using the Lower Limb Function Question naire ( LLFQ ) and Prosthetic Evaluation Question naire ( PEQ ) . Long-term follow-up over 12 months were completed . Results : Walking speeds were the same for WAB and APSL knees . Energy expenditure ( PCI ) was lower for the ASPL knees ( p = 0.007 ) . Step counts were the same for both knees , and question naires indicated ASPL knee preference attributed primarily to knee stability and improved walking , while limitations included terminal impact noise . Nine of 10 participants chose to keep using the ASPL knee as part of the long-term follow-up . Conclusions : Potential benefits of the ASPL knee were identified in this study by functional measures , question naires and user feedback , but not changes in activity or the PEQ . Keywords : Amputee ; artificial knee joint ; energy expenditure ; prosthesis ; stance-phase control ; transfemoral amputation , stance-phase
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 ) .