title: The energetic cost of gait retraining: A pilot study of the acute effect.
abstract: OBJECTIVE
  To investigate the acute effect of gait retraining aimed at reducing tibial peak positive acceleration (PPA) on energetic cost (VO2).
  
  
  METHODS
  Intervention with a pre/post-test design.
  
  
  METHODS
  University biomechanics laboratory.
  
  
  METHODS
  12 healthy male runners (23.4 ± 5.3 years, 179.7 ± 4.3 cm, 75.6 ± 9.2 kg).
  
  
  METHODS
  Tibial PPA and oxygen consumption (VO2) were measured after a five minute baseline run and at the end of a gait retraining session aimed at minimizing tibial PPA.
  
  
  RESULTS
  Tibial PPA significantly decreased between baseline and after gait retraining (32.6%, p = 0.007). VO2significantly increased between the two time periods (9.3%, p = 0.008). There was no correlation between change in tibial PPA and change in VO2(p = 0.956, r = 0.018).
  
  
  CONCLUSIONS
  Practitioners who aim to reduce injury risk by minimizing tibial PPA in runners need to consider the possible acute effect on performance as a result of changes in VO2. Further investigation is warranted to understand the energetic cost of different kinematic strategies used by individuals.
authors: School of Exercise Science, Australian Catholic University, Queensland, Australia. Electronic address: andrew.townshend@acu.edu.au.
authors: Andrew D
authors: AD
authors: Townshend
authors: Centre for Musculoskeletal Research, Mary MacKillop Institute for Health Research, Australian Catholic University, Queensland, Australia.
authors: Melinda M
authors: MM
authors: Franettovich Smith
authors: School of Exercise Science, Australian Catholic University, Queensland, Australia.
authors: Mark W
authors: MW
authors: Creaby
mesh_terms: D000054:Acceleration; D001676:Biofeedback, Psychology; D001696:Biomechanical Phenomena / Q000502:physiology; D003430:Cross-Sectional Studies; D004734:Energy Metabolism / Q000502:physiology*; D005684:Gait / Q000502:physiology*; D006801:Humans; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D010865:Pilot Projects; D012420:Running / Q000502:physiology; D013977:Tibia / Q000502:physiology*; D055815:Young Adult
keywords: Acceleration; Biofeedback; Biomechanics; Fractures