title: Influence of shod/unshod condition and running speed on foot-strike patterns, inversion/eversion, and vertical foot rotation in endurance runners.
abstract: The aim of this study was to determine the influence of barefoot running on foot-strike patterns, eversion-inversion, running speed and vertical foot rotation in endurance runners. Eighty healthy recreational runners (age = 34.11 ± 12.95 years old, body mass index = 22.56 ± 2.65 kg · m(-2)) performed trials in shod/unshod running conditions on a treadmill at comfortable and competitive self-selected speeds. Data were collected by systematic observation of lateral and back recordings at 240 Hz. McNemar's test indicated significant differences between shod/unshod conditions and foot strike at comfortable and competitive speeds (P < 0.001). Speed was related to vertical foot rotation type for shod (P < 0.01) and unshod conditions (P < 0.05). Significant differences were found between shod/unshod conditions in foot rotation at comfortable running speeds (P < 0.001) and competitive running speeds (P < 0.01). No significant difference was found in inversion or eversion (P ≥ 0.05). In conclusion, the results suggest that running kinematics, in terms of foot-strike patterns and vertical foot rotation, differ between shod/unshod conditions, while the inversion or eversion degree remains unchanged.
authors: a Department of Didactics of Corporal Expression , University of Jaén , Spain.
authors: M
authors: M
authors: Muñoz-Jimenez
authors: a Department of Didactics of Corporal Expression , University of Jaén , Spain.
authors: P A
authors: PA
authors: Latorre-Román
authors: b Faculty of Sport Sciences , University of Granada , Spain.
authors: V M
authors: VM
authors: Soto-Hermoso
authors: a Department of Didactics of Corporal Expression , University of Jaén , Spain.
authors: F
authors: F
authors: García-Pinillos
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D004867:Equipment Design; D005260:Female; D005528:Foot / Q000502:physiology*; D005684:Gait / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010807:Physical Endurance / Q000502:physiology*; D011403:Pronation / Q000502:physiology; D012399:Rotation; D012420:Running / Q000502:physiology*; D012775:Shoes; D055815:Young Adult
keywords: asymmetry; barefoot; kinematics; long distance; running