Patellar and Achilles Tendon Stiffness in Elite Soccer Players Assessed Using Myotonometric Measurements.


Journal

Sports health
ISSN: 1941-0921
Titre abrégé: Sports Health
Pays: United States
ID NLM: 101518422

Informations de publication

Date de publication:
Historique:
pubmed: 3 1 2019
medline: 29 5 2019
entrez: 3 1 2019
Statut: ppublish

Résumé

Tendon overuse injuries are an issue in elite footballers (soccer players) and may affect tendon function. Achilles and patellar tendinopathy are the most frequent pathologies. Tendon stiffness, the relationship between the force applied to a tendon and the displacement exerted, may help represent tendon function. Stiffness is affected by training and pathology. Nevertheless, information regarding this mechanical property is lacking for elite soccer athletes. Achilles and patellar tendon stiffness assessed using myotonometric measurements will be greater in elite soccer athletes than in control participants. Cross-sectional study. Level 4. Forty-nine elite soccer athletes and 49 control participants were evaluated during the 2017 preseason. A handheld device was used to measure Achilles and patellar tendon stiffness. Dominant and nondominant limbs were assessed for both groups. A significantly stiffer patellar tendon was found for both the dominant and the nondominant limb in the elite soccer athletes compared with the control group. Nevertheless, no differences were found in Achilles tendon stiffness between groups. When comparing between playing positions in soccer athletes, no significant differences were found for both tendons. Greater patellar tendon stiffness may be related to an improvement in force transmission during muscle contraction. On the other hand, it seems that after years of professional training, Achilles tendon stiffness does not change, conserving the storing-releasing function of elastic energy. The nonsignificant differences between positions may be attributable to the years of homogeneous training that the players underwent. The present study shows another technique for measuring mechanical properties of tendons in soccer athletes that could be used in clinical settings. In the future, this technique may help clinicians choose the best exercise protocol to address impairments in tendon stiffness.

Sections du résumé

BACKGROUND: UNASSIGNED
Tendon overuse injuries are an issue in elite footballers (soccer players) and may affect tendon function. Achilles and patellar tendinopathy are the most frequent pathologies. Tendon stiffness, the relationship between the force applied to a tendon and the displacement exerted, may help represent tendon function. Stiffness is affected by training and pathology. Nevertheless, information regarding this mechanical property is lacking for elite soccer athletes.
HYPOTHESIS: UNASSIGNED
Achilles and patellar tendon stiffness assessed using myotonometric measurements will be greater in elite soccer athletes than in control participants.
STUDY DESIGN: UNASSIGNED
Cross-sectional study.
LEVEL OF EVIDENCE: UNASSIGNED
Level 4.
METHODS: UNASSIGNED
Forty-nine elite soccer athletes and 49 control participants were evaluated during the 2017 preseason. A handheld device was used to measure Achilles and patellar tendon stiffness. Dominant and nondominant limbs were assessed for both groups.
RESULTS: UNASSIGNED
A significantly stiffer patellar tendon was found for both the dominant and the nondominant limb in the elite soccer athletes compared with the control group. Nevertheless, no differences were found in Achilles tendon stiffness between groups. When comparing between playing positions in soccer athletes, no significant differences were found for both tendons.
CONCLUSION: UNASSIGNED
Greater patellar tendon stiffness may be related to an improvement in force transmission during muscle contraction. On the other hand, it seems that after years of professional training, Achilles tendon stiffness does not change, conserving the storing-releasing function of elastic energy. The nonsignificant differences between positions may be attributable to the years of homogeneous training that the players underwent.
CLINICAL RELEVANCE: UNASSIGNED
The present study shows another technique for measuring mechanical properties of tendons in soccer athletes that could be used in clinical settings. In the future, this technique may help clinicians choose the best exercise protocol to address impairments in tendon stiffness.

Identifiants

pubmed: 30601077
doi: 10.1177/1941738118820517
pmc: PMC6391548
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

157-162

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Auteurs

Iver Cristi-Sánchez (I)

Escuela de Kinesiología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.

Claudia Danes-Daetz (C)

Laboratorio Integrativo de Biomecánica y Fisiología del Esfuerzo, Escuela de Kinesiología, Facultad de Medicina, Universidad de los Andes, Santiago, Chile.

Alejandro Neira (A)

Escuela de Kinesiología, Facultad de Ciencias, Universidad Mayor, Santiago, Chile.

Wilson Ferrada (W)

Clínica MEDS, Santiago, Chile.

Roberto Yáñez Díaz (R)

Clínica MEDS, Santiago, Chile.

Rony Silvestre Aguirre (R)

Clínica MEDS, Santiago, Chile.

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