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Journal of biomechanics1994; 27(7); 899-905; doi: 10.1016/0021-9290(94)90262-3

Exercise-induced hyperthermia as a possible mechanism for tendon degeneration.

Abstract: Mathematical modelling of tendon thermodynamics predicted that the temperature of the central core of the equine superficial digital flexor tendon would plateau at 11 degrees C above the tendon surface temperature during a sustained gallop. A mean temperature differential (between tendon core and surface) of 5.4 (S.E. +/- 1.0) degrees C was demonstrated in vivo in four horses. Peak intra-tendinous temperatures in the range 43-45 degrees C were recorded. Temperatures above 42.5 degrees C are known to result in fibroblast death in vitro [Hall (1988) Radiobiology for the Radiologist, 3rd Edn., pp. 294-329]. These in vivo recordings provide a possible aetiology for the degenerative changes that are observed in the central core of tendons in both equine and human athletes.
Publication Date: 1994-07-01 PubMed ID: 8063840DOI: 10.1016/0021-9290(94)90262-3Google Scholar: Lookup
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research suggests that physical activity could elevate the inner temperature of tendons, potentially causing tendon degeneration in equine and human athletes due to fibroblast cell death.

Research Aim and Methodology

  • The study aimed to understand whether intensive exercise and the resulting heat could lead to tendon degradation through the death of fibroblast cells. The research focused on the equine superficial digital flexor tendon, common in both horses and humans.
  • Researchers used mathematical modeling to predict how the temperature inside the tendon would rise during prolonged strenuous activity like a sustained gallop.
  • They then verified these predictions through in vivo tests on four horses, measuring and comparing the temperature at the core and surface of the tendons during exercise.

Key Findings

  • The predictions made via mathematical modeling suggested that the core temperature of the tendon could increase to a point 11 degrees Celsius higher than the tendon’s surface temperature.
  • The in vivo experiments confirmed these predictions, showing an average temperature difference of 5.4 degrees Celsius (with a standard error of +/- 1.0) between the core and surface of the tendon.
  • The study found observed peak intra-tendinous temperatures to be around 43-45 degrees Celsius, which is significantly higher than 42.5 degrees Celsius, a threshold where fibroblast cell death is known to occur.

Implications of the Research

  • The results indicate that intense physical activity can cause significant internal heating in tendons, which can lead to degenerative changes due to fibroblast cell death.
  • This temperature-induced damage could explain the common occurrence of tendon degradation in equine and human athletes. These findings may have crucial implications for athletic training, injury prevention, and treatment protocols.
  • Future research could focus on devising strategies to regulate tendon temperature during strenuous activity, potentially mitigating the risk of exercise-induced tendon degeneration.

Cite This Article

APA
Wilson AM, Goodship AE. (1994). Exercise-induced hyperthermia as a possible mechanism for tendon degeneration. J Biomech, 27(7), 899-905. https://doi.org/10.1016/0021-9290(94)90262-3

Publication

ISSN: 0021-9290
NlmUniqueID: 0157375
Country: United States
Language: English
Volume: 27
Issue: 7
Pages: 899-905

Researcher Affiliations

Wilson, A M
  • Department of Anatomy, University of Bristol, U.K.
Goodship, A E

    MeSH Terms

    • Achilles Tendon / blood supply
    • Achilles Tendon / physiopathology
    • Animals
    • Body Temperature / physiology
    • Electrodes, Implanted
    • Energy Metabolism / physiology
    • Exercise / physiology
    • Fever / physiopathology
    • Forecasting
    • Hoof and Claw
    • Horses
    • Humans
    • Models, Biological
    • Regional Blood Flow / physiology
    • Running / physiology
    • Tendons / blood supply
    • Tendons / physiopathology
    • Thermal Conductivity
    • Thermodynamics
    • Thermometers

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