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Related Experiment Videos

Ankle cryotherapy facilitates soleus function.

J Ty Hopkins1, Rhonda Stencil

  • 1School of Kinesiology and Recreation, Illinois State University, Normal, IL 61790-5120, USA. jthopki@ilstu.edu

The Journal of Orthopaedic and Sports Physical Therapy
|December 21, 2002
PubMed
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Ankle cryotherapy enhances soleus motor function and torque production for up to 60 minutes post-treatment. This study supports using joint cooling before activity and rehabilitation for improved motor function.

Area of Science:

  • Neuromuscular physiology
  • Sports medicine
  • Rehabilitation science

Background:

  • Cryotherapy's effects on muscle and joint function are debated.
  • Joint cooling may enhance, while muscle cooling may impair, motor function.
  • The relationship between the Hoffmann reflex (H-reflex) and voluntary activity post-cryotherapy is unclear.

Purpose of the Study:

  • To assess ankle cryotherapy's impact on soleus voluntary and resting motor function over 60 minutes.
  • To investigate the correlation between changes in torque production and H-reflex following ankle cryotherapy.

Main Methods:

  • A 2-factor experimental design with repeated measures was used.
  • Thirty subjects underwent baseline testing of normalized H-reflex and plantar flexion torque.

Related Experiment Videos

  • Fifteen subjects received 30 minutes of ankle cryotherapy, with measurements taken at 30, 60, and 90 minutes post-treatment.

    • Main Results:

    • Both peak H-reflex and plantar flexion torque significantly increased post-cryotherapy compared to baseline.
    • Measurements at 30, 60, and 90 minutes were greater than in the control group.
    • A weak correlation was found between H-reflex and torque changes at 30 minutes.

    Conclusions:

    • A 30-minute ankle cryotherapy application facilitates the soleus motoneuron pool for at least 60 minutes.
    • These findings support the use of joint cooling prior to physical activity and rehabilitation.
    • Ankle cryotherapy may improve motor function and torque production.