Gait Posture - Stanford University.pdfVIP

G Model GAIPOS-2640; No of Pages 9 Gait Posture xxx (2008) xxx–xxx Contents lists available at ScienceDirect Gait Posture journal homepage: www.elsevi /loc ate/gaitpost Capacity to increase walking speed is limited by impaired hip and ankle power generation in lower functioning persons post-stroke I. Jonkers a,b,*, S. Delp b, C. Patten c,d a Faculty of Kinesiology and Rehabilitation Sciences, K.U. Leuven, Belgium b Departments of Mechanical Engineering and Bioengineering, Stanford University, USA c Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, USA d Departments of Physical Therapy, Applied Physiology Kinesiology, and Neurology, University of Florida, USA A R T I C L E I N F O A B S T R A C T Article history: It is well known that stroke patients walk with reduced speed, but their potential to increase walking Received 17 April 2007 speed can also be impaired and has not been thoroughly investigated. We hypothesized that failure to Received in revised form 14 July 2008 effectively recruit both hip flexor and ankle plantarflexor muscles of the paretic side limits the potential Accepted 23 July 2008 to increase walking speed in lower functioning hemiparetic subjects. To test this hypothesis, we measured gait kinematics and kinetics of 12 persons with hemiparesis following stroke at self-selected Keywords: and fast walking conditions. Two groups were identified: (1) lower functioning subjects (n = 6)