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 ) .
Assessment of aerobic capacity and walking economy of unilateral transfemoral amputees
Background : Studies of the maximal oxygen uptake ( VO2max ) of transfemoral amputees have mostly used protocol s that activate a relatively small muscle mass . Consequently , transfemoral amputee VO2max may be systematic ally underestimated , and the validity of these test protocol s is question able . Objectives : ( 1 ) Investigate validity and reliability of a VO2max walking protocol and ( 2 ) compare the VO2max of a transfemoral amputee group with a group of matching controls . Study design : ( 1 ) R and omized crossover study : walking versus running VO2max for the control group and ( 2 ) case-control study : transfemoral amputees versus control group VO2max . Methods : Twelve transfemoral amputees and control participants performed a walking VO2max test with increasing treadmill inclinations to voluntary exhaustion . The control group also completed a running ( “ gold-st and ard ” ) VO2max test . Results : Mean ( st and ard deviation ) control group VO2max following walking and running was similar , that is , 2.99 ( 0.6 ) L min−1 and 3.09 ( 0.7 ) L min−1 , respectively . Mean ( st and ard deviation ) transfemoral amputee walking VO2max was 2.14 ( 0.8 ) L min−1 ( compared to CON ; p < 0.01 ) . Mean intraclass correlation coefficient of repeated VO2 measurements was 0.97 , and within-subjects st and ard deviation was 60 mL min−1 . Conclusions : The walk protocol is valid . Walking VO2max of transfemoral amputees was 40 % lower compared to control group . Reliability of the walking protocol is comparable to other walking protocol s. Clinical relevance The design , alignment , and material s of prostheses are important for effective ambulation . Cardio-respiratory fitness is , however , also important in this regard , and a low fitness may compromise health and independent living . Hence , transfemoral amputees with low physical fitness should engage in regular physical activity to improve health , gait capacity , and independency
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 ) .