Lower extremity variability changes with drop-landing height manipulations
Gespeichert in:
| Deutscher übersetzter Titel: | Die Variabilität der unteren Extremität verändert sich mit der Höhenmodifikation bei der Drop-Jump-Landung |
|---|---|
| Autor: | Nordin, Andrew D.; Dufek, Janet S. |
| Erschienen in: | Research in sports medicine |
| Veröffentlicht: | 25 (2017), 2, S. 144-155, Lit. |
| Format: | Literatur (SPOLIT) |
| Publikationstyp: | Zeitschriftenartikel |
| Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
| Sprache: | Englisch |
| ISSN: | 1543-8627, 1543-8635 |
| DOI: | 10.1080/15438627.2017.1282353 |
| Schlagworte: | |
| Online Zugang: | |
| Erfassungsnummer: | PU201706004705 |
| Quelle: | BISp |
Abstract des Autors
Landing is a common lower extremity injury mechanism in sport, with potential connections to movement control accessed through variability measures. We investigated intra-subject lower extremity variability changes following drop-landing height manipulations using standard deviation (SD) and coefficient of variation (CV) among lower extremity peak sagittal joint angles and moments. Fourteen healthy participants completed five drop-landing trials from five heights 20%, 60%, 100%, 140% and 180% maximum vertical jump height (MVJH). Peak joint angles and moments increased with greater landing height (p < 0.001), highlighting inter-joint differences (Flexion: Knee > Hip > Ankle, p < 0.001; Extensor Moment: Hip > Knee > Ankle, in excess of 60% MVJH, p < 0.05). Kinematic and kinetic SD increased with variable magnitudes, while CV decreased at greater landing heights (p ≤ 0.016). Decreased relative variability under greater task demands may underscore non-contact injury mechanisms from repetitive loading of identical structures.