Transverse tendon stiffness is reduced in people with Achilles tendinopathy: A cross-sectional study

Autor: Alex Scott, Evan Finnamore, Lyndal Solomons, Michael Ryan, Charlotte Waugh, Christopher West
Rok vydání: 2018
Předmět:
Male
Cross-sectional study
Physiology
Biochemistry
Running
Stiffness
Diagnostic Radiology
Cohort Studies
Tendons
0302 clinical medicine
Ultrasound Imaging
Medicine and Health Sciences
Musculoskeletal Diseases
Musculoskeletal System
Ultrasonography
030222 orthopedics
Achilles tendon
Multidisciplinary
Feet
Radiology and Imaging
Ultrasound
Middle Aged
musculoskeletal system
Tendon
medicine.anatomical_structure
Connective Tissue
Research Design
Physical Sciences
Medicine
Legs
Female
medicine.symptom
Anatomy
Cohort study
Research Article
musculoskeletal diseases
Adult
medicine.medical_specialty
Waist
Imaging Techniques
Science
Materials Science
Material Properties
Research and Analysis Methods
Asymptomatic
Achilles Tendon
03 medical and health sciences
Tendon Injuries
Diagnostic Medicine
medicine
Humans
Mechanical Properties
business.industry
Biological Locomotion
Biology and Life Sciences
Proteins
030229 sport sciences
medicine.disease
Cross-Sectional Studies
Biological Tissue
Body Limbs
Tendinopathy
Physical therapy
business
Collagens
Zdroj: PLoS ONE
PLoS ONE, Vol 14, Iss 2, p e0211863 (2019)
ISSN: 1932-6203
Popis: ObjectivesThe objective of the current cross-sectional study was to examine Achilles tendon transverse stiffness in a group of recreational runners with Achilles tendinopathy, in comparison to an asymptomatic group of runners with similar training history. We also aimed to determine the between-week intra-individual reliability of this measurement technique.DesignCross-sectional cohort study.MethodsA hand-held dynamometer was used to assess the transverse stiffness of the Achilles tendon (AT) in twenty-five recreational runners. In ten people with midportion Achilles tendinopathy (5 men, 5 women), measurements were taken directly over the most symptomatic location. In 15 people who were free of AT symptoms (7 men, 8 women), measurements were taken at an equivalent location on the tendon. Participants returned after one week to determine measurement reliability (intra-class correlation coefficient/ICC and minimum detectable change/MDC95). We also collected information about people's tendon loading activities, tendon thickness (ultrasound mesaurement), and symptoms (Victorian Institute of Sports Assessment-Achilles / VISA-A score).ResultsThe AT transverse stiffness was lower in people with Achilles tendinopathy (777 N/m ± 86) compared to those who were asymptomatic (873 N/m ± 72) (p < 0.05). AT transverse stiffness was negatively correlated with age and tendon thickness, and positively correlated with VISA-A score and waist circumference. Reliability was good, with ICC of 0.81 in people with tendinopathy and 0.80 in healthy controls, and an MDC95 of 118 and 87N/m in these two respective groups.ConclusionsTransverse Achilles tendon stiffness can be reliably measured in people with midportion Achilles tendinopathy, and appears to be lower in people who are older, more symptomatic, and with more extensive tendon thickening. The potential clinical utility of monitoring tendon stiffness in the management of tendon injuries merits further study.
Databáze: OpenAIRE
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