title: Effects of High- and Low-Velocity Resistance Training on Gait Kinematics and Kinetics in Individuals with Hip Osteoarthritis: A Randomized Controlled Trial.
abstract: OBJECTIVE
  The aim of this study was to investigate the effects of high-velocity (HV) and low-velocity (LV) resistance training on gait kinematics and kinetics in patients with hip osteoarthritis.
  
  
  METHODS
  This was a single-blind, randomized controlled trial. Forty-six women with hip osteoarthritis were randomly allocated to the HV (n = 23) or LV (n = 23) training group. The participants underwent an 8-week home-based the HV or LV resistance-training program, involving the hip and knee muscles. Outcome measures included gait kinematics and kinetics using 3-dimensional analyses, muscle strength and power, the Harris Hip Score, and hip pain using the visual analog scale.
  
  
  RESULTS
  There was no significant difference in changes for any of the outcome measures between groups. After the training session, muscle power, walking speed, and cadence significantly increased only in the HV group, whereas stride length and the peak hip extension angle during gait significantly increased, and pain on the visual analog scale and the peak ankle dorsiflexion moment during gait significantly decreased only in the LV group. Muscle strength and Harris Hip Score significantly increased in both groups.
  
  
  CONCLUSIONS
  The results of this study may indicate that the potential effect of resistance training on abnormal gait pattern depends on movement velocities during training.
authors.affiliation: From the Faculty of Rehabilitation, Kobe Gakuin University, Kobe (YF); Graduate School of Medicine, Kyoto University, Kyoto (YF, HT, KS, YK, NI); School of Rehabilitation, Hyogo University of Human Sciences, Kobe (RT) Japan; Physical Medicine and Rehabilitation Unit, Istituto Ortopedico Rizzoli, Bologna, Italy (YO); and Graduate School of Medicine, Gifu University, Gifu, Japan (HA).
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Fukumoto
authors.forename: Hiroshige
authors.initials: H
authors.lastname: Tateuchi
authors.forename: Rui
authors.initials: R
authors.lastname: Tsukagoshi
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Okita
authors.forename: Haruhiko
authors.initials: H
authors.lastname: Akiyama
authors.forename: Kazutaka
authors.initials: K
authors.lastname: So
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kuroda
authors.forename: Noriaki
authors.initials: N
authors.lastname: Ichihashi
mesh_terms: D001696:Biomechanical Phenomena / Q000502:physiology; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D015207:Osteoarthritis, Hip / Q000503:physiopathology / Q000534:rehabilitation*; D055070:Resistance Training / Q000379:methods*; D016037:Single-Blind Method; D064232:Visual Analog Scale; D000072797:Walking Speed / Q000502:physiology