A Kinematics and Kinetic Comparison of （运动学和动力学的比较）.pdf

APPLIED SCIENCES Biodynamics A Kinematics and Kinetic Comparison of Overground and Treadmill Running 1 1 1 1,2 1 PATRICK O. RILEY , JAY DICHARRY , JASON FRANZ , UGO DELLA CROCE , ROBERT P. WILDER , and D. CASEY KERRIGAN1 1Department of Physical Medicine and Rehabilitation, University of Virginia, Charlottesville, VA; and 2Department of Biomedical Sciences, University of Sassari, Sassari, ITALY ABSTRACT RILEY, P. O., J. DICHARRY, J. FRANZ, U. D. CROCE, R. P. WILDER, and D. C. KERRIGAN. A Kinematics and Kinetic Comparison of Overground and Treadmill Running. Med. Sci. Sports Exerc., Vol. 40, No. 6, pp. 1093–1100, 2008. Purpose: The purpose of this study was to compare the kinematic and kinetic parameters of treadmill running to those of overground running. Methods: Twenty healthy young subjects ran overground at their self-selected moderate running speed. Motion capture and ground reaction force (GRF) data for three strides of each limb were recorded and the subjects _ average running speed was evaluated. The subjects then ran on an instrumented treadmill set to their average overground running speed while motion capture and GRF data were recorded. The kinematics (body segment orientations and joint angles) and kinetics (net joint moments and joint powers) for treadmill (15 consecutive gait cycles) and overground running (three cycles each limb) were calculated and compared. Results: The features of th