Altered vertical ground reaction forces in participants with chronic ankle instability while running
Deutscher übersetzter Titel: | Veränderte vertikale Bodenreaktionskraft bei Probanden mit chronischer Sprunggelenksinstabilität während des Laufens |
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Autor: | Bigouette, John; Simon, Janet; Liu, Kathy; Docherty, Carrie L. |
Erschienen in: | Journal of athletic training |
Veröffentlicht: | 51 (2016), 9, S. 682-687, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1062-6050, 0160-8320, 1938-162X |
DOI: | 10.4085/1062-6050-51.11.11 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201612009027 |
Quelle: | BISp |
Abstract des Autors
Context: Altered gait kinetics may increase the risk of long-term injuries in participants with chronic ankle instability (CAI). Vertical ground reaction forces (vGRFs) can provide insight into how body loading is altered.
Objective: To compare the components of vGRFs while running in participants with or without CAI.
Design: Cohort study.
Setting: University biomechanics laboratory.
Patients or Other Participants: Twenty-four experienced, college-aged runners. Groups were categorized by the presence (CAI group) or absence (control group) of CAI through self-reported questionnaires.
Intervention(s): After a warm-up period, all participants ran on an instrumented treadmill for 5 minutes at 3.3 m/s. Data were collected during the last 30 seconds. Five continuous trials of heel-to-toe running were identified per participant and averaged for statistical analysis.
Main Outcome Measure(s): The dependent variables were impact peak force (N/body weight [BW]), active peak force (N/BW), time to impact peak force (milliseconds), time to active peak force (milliseconds), and average loading rate ([N/BW]/s).
Results: A difference was found between groups (P = .002). The CAI group had higher impact peak forces (P = .001) and active peak forces (P = .002) compared with the control group. The CAI group also had an increased loading rate (P = .001) and a shorter time to reach the active peak force (P = .001) compared with the control group. No difference was seen between groups in the time to reach the impact peak force (P = .952).
Conclusions: Participants with CAI produced altered vGRFs and loading rates while running. Altered loading rates could predispose individuals with CAI to stress-related injuries and repetitive sprains.