title: The effect of high-intensity cycling training on postural sway during standing under rested and fatigued conditions in healthy young adults.
abstract: OBJECTIVE
  The purpose of this study was to investigate whether high-intensity cycling training leads to adapted responses of balance performance in response to exercise-induced muscle fatigue.
  
  
  METHODS
  Eighteen healthy adults were assigned to either 3-weeks (n = 8, age 20.1 ± 2.6 years, height 177 ± 5 cm, mass 73.6 ± 5.1 kg) or 6-weeks (n = 10, age 24.3 ± 5.8 years, height 179 ± 6 cm, mass 81.0 ± 15.8 kg) of high-intensity training (HIT) on a cycle ergometer. The centre of pressure (COP) displacement in the anteroposterior (COPAP) direction and COP path length (COPL) were measured before and after the first and final high-intensity training sessions.
  
  
  RESULTS
  Pre-training, exercise-induced fatigue elicited an increase in COPAP (3-weeks; p = 0.001, 6-weeks; p = 0.001) and COPL (3-weeks; p = 0.002, 6-weeks; p = 0.001) returning to pre-exercise levels within 10-min of recovery. Following 3-weeks of training, significant increases in COPAP (p = 0.001) and COPL (p = 0.002) were observed post-fatigue, returning to pre-exercise levels after 15-min of recovery. After 6-weeks of training no significant increases in sway (COPAP; p = 0.212, COPL; p = 0.998) were observed following exercise-induced fatigue.
  
  
  CONCLUSIONS
  In summary, 3 weeks of HIT resulted in longer recovery times following fatigue compared to pre-training assessments. After 6 weeks of HIT, postural sway following fatigue was attenuated. These results indicate that HIT could be included in injury prevention programmes, however, caution should be taken during early stages of the overreaching process.
authors: Sport, Exercise and Life Sciences, University of Northampton, Boughton Green Road, Northampton, NN2 7AL, UK. mathew.hill@northampton.ac.uk.
authors: Mathew W
authors: MW
authors: Hill
authors: Department of Life Sciences, University of Derby, Kedleston Road, Derby, DE22 1GB, UK.
authors: Matthew F
authors: MF
authors: Higgins
authors: School of Life Sciences, Coventry University, Priory Street, Coventry, CV1 5FB, UK.
authors: Michael J
authors: MJ
authors: Price
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology; D001642:Bicycling / Q000502:physiology*; D005260:Female; D000072696:High-Intensity Interval Training / Q000379:methods*; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology; D018763:Muscle Fatigue / Q000502:physiology*; D053580:Muscle Strength / Q000502:physiology; D064797:Physical Conditioning, Human / Q000379:methods; D010807:Physical Endurance / Q000502:physiology*; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D012146:Rest / Q000502:physiology; D055815:Young Adult
keywords: Balance; Cycling; Endurance training; Fatigue; Postural stability; Recovery