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Are Sport-Specific Profiles of Tendon Stiffness and Cross-Sectional Area Determined by Structural or Functional Integrity?
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Journal Article
Are Sport-Specific Profiles of Tendon Stiffness and Cross-Sectional Area Determined by Structural or Functional Integrity?
2016
Overview
The present study aimed to determine whether distinct sets of tendon properties are seen in athletes engaged in sports with contrasting requirements for tendon function and structural integrity. Patellar and Achilles tendon morphology and force-deformation relation were measured by combining ultrasonography, electromyography and dynamometry in elite ski jumpers, distance runners, water polo players and sedentary individuals. Tendon cross-sectional area normalized to body mass2/3 was smaller in water polo players than in other athletes (patellar and Achilles tendon; -28 to -24%) or controls (patellar tendon only; -9%). In contrast, the normalized cross-sectional area was larger in runners (patellar tendon only; +26%) and ski jumpers (patellar and Achilles tendon; +21% and +13%, respectively) than in controls. Tendon stiffness normalized to body mass2/3 only differed in ski jumpers, compared to controls (patellar and Achilles tendon; +11% and +27%, respectively) and to water polo players (Achilles tendon only; +23%). Tendon size appears as an adjusting variable to changes in loading volume and/or intensity, possibly to preserve ultimate strength or fatigue resistance. However, uncoupled morphological and mechanical properties indicate that functional requirements may also influence tendon adaptations.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
Achilles Tendon - anatomy & histology
/ Achilles Tendon - physiology
/ Achilles Tendon - ultrastructure
/ Adaptation, Physiological - physiology
/ Adult
/ Athletes
/ Humans
/ Knee
/ Male
/ Medicine and Health Sciences
/ Patellar Ligament - anatomy & histology
/ Patellar Ligament - physiology
/ Patellar Ligament - ultrastructure
/ Range of Motion, Articular - physiology
/ Research and Analysis Methods
/ Running
/ Skiing
/ Studies
/ Tendons
