title: Activation of the hip adductor muscles varies during a simulated weight-bearing task.
abstract: OBJECTIVE
  To investigate the pattern of muscle activation of the individual hip adductor muscles using a standardised simulated unilateral weight-bearing task.
  
  
  METHODS
  A repeated measures design.
  
  
  METHODS
  Laboratory.
  
  
  METHODS
  20 healthy individuals (11 females, 9 males) participated in the study. Age ranged from 20 to 25 years.
  
  
  METHODS
  Surface electromyography recordings from adductor magnus and adductor longus muscles were taken at levels representing 10-50% of body weight during a simulated weight-bearing task. Electromyography (EMG) data were normalised to maximal voluntary isometric contraction.
  
  
  RESULTS
  The adductor magnus was recruited at significantly higher levels than the adductor longus muscle during a simulated weight-bearing task performed across 10-50% of body weight (p < 0.01).
  
  
  CONCLUSIONS
  Adductor magnus and adductor longus muscles are recruited to different extents during a simulated weight-bearing task. This information should be considered when selecting exercises for management and prevention of groin strains. Closed chain exercises with weight-bearing through the lower limb are more likely to recruit the adductor magnus muscle over the adductor longus muscle.
authors.affiliation: Centre for Musculoskeletal Research, Mary Mackillop Institute for Health Research, Australian Catholic University, Brisbane 4102, Australia. Electronic address: julie.hides@acu.edu.au.
authors.forename: Julie A
authors.initials: JA
authors.lastname: Hides
authors.affiliation: Division of Physiotherapy, School of Health and Rehabilitation Sciences, St Lucia Campus, The University of Queensland, Brisbane 4072, Australia.
authors.forename: Paula
authors.initials: P
authors.lastname: Beall
authors.affiliation: Centre for Musculoskeletal Research, Mary Mackillop Institute for Health Research, Australian Catholic University, Brisbane 4102, Australia.
authors.forename: Melinda M
authors.initials: MM
authors.lastname: Franettovich Smith
authors.affiliation: Centre for Musculoskeletal Research, Mary Mackillop Institute for Health Research, Australian Catholic University, Brisbane 4102, Australia.
authors.forename: Warren
authors.initials: W
authors.lastname: Stanton
authors.affiliation: Centre for Musculoskeletal Research, Mary Mackillop Institute for Health Research, Australian Catholic University, Brisbane 4102, Australia.
authors.forename: Tanja
authors.initials: T
authors.lastname: Miokovic
authors.affiliation: Division of Physiotherapy, School of Health and Rehabilitation Sciences, St Lucia Campus, The University of Queensland, Brisbane 4072, Australia.
authors.forename: Carolyn
authors.initials: C
authors.lastname: Richardson
mesh_terms: D000328:Adult; D004576:Electromyography; D015444:Exercise / Q000502:physiology*; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D064368:Healthy Volunteers; D006615:Hip; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D018482:Muscle, Skeletal / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology*; D055815:Young Adult
keywords: Adductor longus; Adductor magnus; Weight-bearing