title: Relationship between body height and spatiotemporal parameters during a 100-m sprint in able-bodied and unilateral transtibial sprinters.
abstract: BACKGROUND
  Although anthropometric factors could influence sprint performance in able-bodied sprinters, little is known about the relationships between these anthropometric factors and sprint performance in amputee sprinters.
  
  
  OBJECTIVE
  To investigate the relationships between body height and spatiotemporal parameters of 100-m sprints in unilateral transtibial amputee and able-bodied sprinters.
  
  
  METHODS
  This is a cross-sectional study.
  
  
  METHODS
  We analyzed elite-level 100-m races of 14 male unilateral transtibial amputee sprinters and 22 male able-bodied sprinters from publicly available Internet broadcasts. For each sprinter's run, the mean step length and frequency were determined using the number of steps in conjunction with the official race time. Furthermore, body height data for sprinters in both groups were obtained from publicly available resources.
  
  
  RESULTS
  Linear relationships were found between body height and mean step length and frequency in able-bodied sprinters, respectively. However, there were no significant relationships between body height and spatiotemporal parameters in transtibial amputee sprinters.
  
  
  CONCLUSIONS
  The results of this study suggest that the relationship between body height and spatiotemporal parameters during a 100-m sprint is not the same between unilateral transtibial amputees and able-bodied sprinters. Clinical relevance Understanding of the relationship between body height and spatiotemporal parameters during a 100-m sprint would provide important information that could be utilized for evaluating prosthetic sprint performance and coaching.
authors.affiliation: 1 National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Hobara
authors.affiliation: 2 German Sport University Cologne, Cologne, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Potthast
authors.affiliation: 2 German Sport University Cologne, Cologne, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Müller
authors.affiliation: 1 National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan.
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kobayashi
authors.affiliation: 3 Sangyo Gijutsu Sogo Kenkyujo Rinkaifukutoshin Center, Tokyo, Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Hashizume
authors.affiliation: 1 National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan.
authors.forename: Thijs A
authors.initials: TA
authors.lastname: Herdoorn
authors.affiliation: 1 National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Mochimaru
mesh_terms: D000671:Amputation, Surgical / Q000379:methods; D000674:Amputees / Q000534:rehabilitation*; D001186:Artificial Limbs; D056352:Athletes; D054874:Athletic Performance / Q000502:physiology*; D001696:Biomechanical Phenomena; D001827:Body Height; D003430:Cross-Sectional Studies; D006801:Humans; D007564:Japan; D008297:Male; D012016:Reference Values; D012420:Running / Q000502:physiology*; D018709:Statistics, Nonparametric; D013977:Tibia / Q000601:surgery
keywords: Prosthetic sprinting; running-specific prostheses; step frequency; step length