title: Dynamic postural stability differences between male and female players with and without ankle sprain.
abstract: OBJECTIVE
  To evaluate dynamic stability index (DSI) differences between males and females for different jump directions. To examine both preseason DSI differences between players with and without a history of ankle sprain, and between players with and without an ankle sprain during the subsequent season.
  
  
  METHODS
  Prospective cohort design.
  
  
  METHODS
  Laboratory.
  
  
  METHODS
  47 male (22.9 ± 3.9 y) and 19 female (21.5 ± 2.9 y) sub-elite and elite team sport players.
  
  
  METHODS
  Ankle sprain history was collected using an injury history questionnaire. DSI of a single-leg hop-stabilization task measured preseason was collected using force plates and calculated using a Matlab program. Ankle sprains were reported during the subsequent season.
  
  
  RESULTS
  Male players demonstrated larger DSI than female players on forward medial/lateral stability index (MLSI) and vertical stability index (VSI), diagonal VSI, and lateral anterior/posterior stability index (APSI) and VSI. Forward, diagonal and lateral dynamic postural stability indices (DPSI) were larger for males (p < 0.001). No significant differences were found between players with and without a previous ankle sprain nor between players with and without an ankle sprain during the subsequent season.
  
  
  CONCLUSIONS
  Male players showed larger DSI scores than female players, indicating lower dynamic stability. Sex-specific training sessions or prevention programs should be developed.
authors.affiliation: University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands. Electronic address: j.m.dallinga@umcg.nl.
authors.forename: Joan M
authors.initials: JM
authors.lastname: Dallinga
authors.affiliation: University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands; Hanze University Groningen, School of Sports Studies, Zernikeplein 17, 9747 AS Groningen, The Netherlands. Electronic address: h.t.d.van.der.does@umcg.nl.
authors.forename: Henrike T D
authors.initials: HT
authors.lastname: van der Does
authors.affiliation: University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands; Hanze University Groningen, School of Sports Studies, Zernikeplein 17, 9747 AS Groningen, The Netherlands. Electronic address: a.benjaminse@umcg.nl.
authors.forename: Anne
authors.initials: A
authors.lastname: Benjaminse
authors.affiliation: University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands; Hanze University Groningen, School of Sports Studies, Zernikeplein 17, 9747 AS Groningen, The Netherlands. Electronic address: k.a.p.m.lemmink@umcg.nl.
authors.forename: Koen A P M
authors.initials: KA
authors.lastname: Lemmink
mesh_terms: D016512:Ankle Injuries / Q000503:physiopathology* / Q000517:prevention & control; D001490:Basketball / Q000293:injuries*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D004856:Postural Balance / Q000502:physiology*; D011446:Prospective Studies
keywords: Ankle injuries; Dynamic task; Lower extremity; Postural stability