The influence of heel height on vertical ground reaction force during landing tasks in recreationally active and athletic collegiate females.
Int J Sports Phys Ther
; 8(1): 1-8, 2013 Feb.
Article
em En
| MEDLINE
| ID: mdl-23439490
PURPOSE: To determine if heel height alters vertical ground reaction forces (vGRF) when landing from a forward hop or drop landing. BACKGROUND: Increased vGRF during landing are theorized to increase ACL injury risk in female athletes. METHODS: Fifty collegiate females performed two single-limb landing tasks while wearing heel lifts of three different sizes (0, 12 & 24 mm) attached to the bottom of a athletic shoe. Using a force plate, peak vGRF at landing was examined. Repeated measures ANOVAs were used to determine the influence of heel height on the dependent measures. RESULTS: Forward hop task- Peak vGRF (normalized for body mass) with 0 mm, 12 mm, and 24 mm lifts were 2.613±0.498, 2.616±0.497 and 2.495±0.518% BW, respectively. Significant differences were noted between 0 and 24 mm lift (p<.001) and 12 and 24 mm lifts (p=.004), but not between the 0 and 12 mm conditions (p=.927). Jump-landing task- No significant differences were found in peak vGRF (p=.192) between any of the heel lift conditions. CONCLUSIONS: The addition of a 24 mm heel lift to the bottom of a sneaker significantly alters peak vGRF upon landing from a unilateral forward hop but not from a jumping maneuver.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Int J Sports Phys Ther
Ano de publicação:
2013
Tipo de documento:
Article
País de publicação:
Estados Unidos