Physiologic comparison of forward and reverse wheelchair propulsion

摘要: Salvi FJ, Hoffman MD, Sabharwal S, Clifford PS. Physiologic comparison of forward and reverse wheelchair propulsion. Arch Phys Med Rehabil 1998;79:36-40. Objectives: Conventional propulsion is physio- logically demanding because the small muscle mass that used low mechanical efficiency movement. Previ- ous research has suggested a wheeling technique might be more economical than conventional wheeling. The present study sought to compare physiologic demands techniques. Design: A repeated measures design was dependent variables between techniques in same subjects. Setting: Human exercise laboratory. Participants: Ten able-bodied men. Intervention: Subjects completed graded, discontinuous ex- ercise tests on ergometer, using both Main Outcome Measures: Oxygen uptake (Vo2), ventilation (VE), heart rate were measured during last 30 seconds each 3-minute stage. Blood lactate concentration ((La)) rating perceived exertion (RPE) determined immediately after Results: Repeated analysis variance demon- strated X)o2, VE, rate, (La), RPE all signifi- cantly greater (p < .05) with compared ~/o2 values averaged 9% higher at identical power outputs. Conclusions: Reverse physiologi- cally does not appear offer potential for improving economy © )998 by American Congress Rehabilitation Medicine Academy Physical Rehabili- tation