title: Effects of running experience on coordination and its variability in runners.
abstract: The purpose of this study was to examine the differences in coordination variability in running gait between trained runners and non-runners using continuous relative phase (CRP) analysis. Lower extremity kinematic data were collected for 22 participants during the stance phase. The participants were assigned to either a runner or non-runner group based on running volume training. Segment coordination and coordination variability were calculated for selected hip-knee and knee-ankle couplings. Independent t-tests and magnitude-based inferences were used to compare the 2 groups. There were limited differences in the CRP and its variability among runners and non-runner groups. The runners group achieved moderately lower coordination compared with non-runners group in the phase angle for hip abduction/adduction and knee flexion/extension. The runners tended to show moderately lower coordination variability in the phase angle for knee flexion/extension and subtalar inversion/eversion in comparison to non-runners group. These results suggested that levels of experience as estimated from weekly training volume had little influence on coordination and its variability.
authors.affiliation: a Physical Performance Sports Research , Universidad Pablo de Olavide , Seville , Spain.
authors.forename: Pablo
authors.identifier: http://orcid.org/0000-0002-1863-4285
authors.initials: P
authors.lastname: Floría
authors.affiliation: b Department of Sport , CEU San Pablo University , Seville , Spain.
authors.forename: Alberto
authors.initials: A
authors.lastname: Sánchez-Sixto
authors.affiliation: c Running Injury Clinic , Calgary , Canada.|d University of Calgary , Calgary , Canada.
authors.forename: Reed
authors.initials: R
authors.lastname: Ferber
authors.affiliation: e Biomechanics Research Unit , University of Limerick , Limerick , Ireland.
authors.forename: Andrew J
authors.identifier: http://orcid.org/0000-0002-5569-4885
authors.initials: AJ
authors.lastname: Harrison
mesh_terms: D001696:Biomechanical Phenomena; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D035002:Lower Extremity / Q000502:physiology*; D064797:Physical Conditioning, Human; D012420:Running / Q000502:physiology*; D013996:Time and Motion Studies; D055815:Young Adult
keywords: Continuous relative phase; dynamical systems; joint couplings; lower extremity; training volume