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Changes in muscular pennation angle after crenotherapy.

Paola Brancaccio1, Florence Somma, Federica Provenzano

  • 1II University of Naples, Service of Sports Medicine, Napoli, Italy.

Muscles, Ligaments and Tendons Journal
|July 27, 2013
PubMed
Summary
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Warm thermal water therapy (crenotherapy) reduced muscle pennation angle in runners, suggesting a decrease in muscular contracture. Swimmers showed no significant changes after the treatment.

Area of Science:

  • Sports Medicine
  • Physiotherapy
  • Musculoskeletal Ultrasound

Background:

  • Muscular architecture, including fiber organization and pennation angle, is crucial for muscle function.
  • Increased pennation angle is associated with muscle contraction.
  • The effect of crenotherapy on muscular architecture is not well understood.

Purpose of the Study:

  • To investigate the impact of crenotherapy on the pennation angle of athletes.
  • To compare the effects of thermal therapy on runners versus swimmers.

Main Methods:

  • 45 amateur athletes (30 runners, 15 swimmers) participated in the study.
  • Muscular ultrasound and clinical examinations were performed before and after 10 sessions of crenotherapy.
  • Pennation angle measurements were compared between groups and before/after treatment.
Keywords:
crenotherapymuscular architecturepennation angle

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Main Results:

  • Baseline pennation angles differed significantly between runners (19.1° ± 3.8°) and swimmers (16.7° ± 2.4°).
  • Following crenotherapy, runners showed a significant decrease in resting pennation angle (17.5° ± 2.9°).
  • No significant changes in pennation angle were observed in swimmers.

Conclusions:

  • Crenotherapy significantly reduced the pennation angle in runners, indicating a potential decrease in muscular contracture.
  • The observed variations suggest that thermal therapy may benefit athletes experiencing muscle tightness, particularly runners.