Achilles tendon material properties are greater in the jump leg of jumping athletes.
J Musculoskelet Neuronal Interact
; 16(2): 105-12, 2016 06 01.
Article
en En
| MEDLINE
| ID: mdl-27282454
ABSTRACT
PURPOSE:
The Achilles tendon (AT) must adapt to meet changes in demands. This study explored AT adaptation by comparing properties within the jump and non-jump legs of jumping athletes. Non-jumping control athletes were included to control limb dominance effects.METHODS:
AT properties were assessed in the preferred (jump) and non-preferred (lead) jumping legs of male collegiate-level long and/or high jump (jumpers; n=10) and cross-country (controls; n=10) athletes. Cross-sectional area (CSA), elongation, and force during isometric contractions were used to estimate the morphological, mechanical and material properties of the ATs bilaterally.RESULTS:
Jumpers exposed their ATs to more force and stress than controls (all p≤0.03). AT force and stress were also greater in the jump leg of both jumpers and controls than in the lead leg (all p<0.05). Jumpers had 17.8% greater AT stiffness and 24.4% greater Young's modulus in their jump leg compared to lead leg (all p<0.05). There were no jump versus lead leg differences in AT stiffness or Young's modulus within controls (all p>0.05).CONCLUSION:
ATs chronically exposed to elevated mechanical loading were found to exhibit greater mechanical (stiffness) and material (Young's modulus) properties.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Tendón Calcáneo
/
Deportes
/
Adaptación Fisiológica
/
Atletas
Tipo de estudio:
Diagnostic_studies
Límite:
Adolescent
/
Adult
/
Humans
/
Male
Idioma:
En
Revista:
J Musculoskelet Neuronal Interact
Asunto de la revista:
FISIOLOGIA
/
NEUROLOGIA
/
ORTOPEDIA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Estados Unidos