Lower extremity variability changes with drop-landing height manipulations.
Res Sports Med
; 25(2): 144-155, 2017.
Article
em En
| MEDLINE
| ID: mdl-28105865
ABSTRACT
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.
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Base de dados:
MEDLINE
Assunto principal:
Extremidade Inferior
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Articulação do Quadril
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Articulação do Joelho
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Articulação do Tornozelo
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Movimento
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article