title: Three-dimensional lower extremity kinematics of Chinese during activities of daily living.
abstract: OBJECTIVE
  There were gender differences regarding lower extremity kinematics. The purpose of this study was to investigate three-dimensional kinematics of lower extremity for young Chinese during daily activities and to identify gender differences in lower extremity kinematics.
  
  
  METHODS
  Lower extremity motions of 40 healthy volunteers (20 males and 20 females) were recorded while each subject performing each of three daily activities (walking, jogging, and deep squatting). The spatiotemporal parameters (speed, cadence and step length) and 3D joint kinematics (peak angles and mean range of motions) were compared with previous results and within gender group. Independents t-tests were used to test statistical significance (p< 0.05).
  
  
  RESULTS
  Statistical analysis suggested that there was no gender difference in sagittal plane motions at the hip, knee and ankle joints, while females displayed greater non-sagittal plane joint motions compared to their male counterparts.
  
  
  CONCLUSIONS
  The outcomes of this study added basic understanding of joint biomechanics during daily activities of Chinese and provided a basis for comparison to patients with various joint diseases.
authors.affiliation: College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China Julius Wolff Institute, Charite Universitätmedizin Berlin, Berlin, Germany.
authors.forename: Shuyang
authors.initials: S
authors.lastname: Han
authors.affiliation: College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Cheng
authors.affiliation: College of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Xu
mesh_terms: D000203:Activities of Daily Living; D000843:Ankle Joint / Q000502:physiology; D044466:Asian People; D001696:Biomechanical Phenomena / Q000502:physiology; D005260:Female; D006801:Humans; D007717:Knee / Q000502:physiology; D007719:Knee Joint / Q000502:physiology; D035002:Lower Extremity / Q000502:physiology*; D008297:Male; D011187:Posture / Q000502:physiology*; D012420:Running / Q000502:physiology*; D012727:Sex Characteristics; D012737:Sex Factors; D016138:Walking / Q000502:physiology*; D055815:Young Adult
keywords: Daily activities; deep squatting; gender difference; kinematics