Dynamic Postural-Stability Deficits After Cryotherapy to the Ankle Joint

Area of Science:

• Sports Medicine
• Biomechanics
• Physiology

Background:

• Decreased postural stability is a significant risk factor for lower limb injuries in athletes.
• Cryotherapy is frequently used during athletic events, but its immediate effects on balance are not well understood.
• Understanding cryotherapy's impact is crucial for injury prevention and performance optimization.

Purpose of the Study:

• To evaluate the acute effects of a 15-minute ankle-joint cryotherapy intervention on dynamic postural stability.
• To assess changes in balance performance and center-of-pressure dynamics following cryotherapy.

Main Methods:

• A controlled laboratory study involving 29 elite collegiate male field-sport athletes.
• Participants underwent the Star Excursion Balance Test (SEBT) in anterior, posterolateral, and posteromedial directions before and after 15 minutes of ankle cryotherapy.
• Measurements included normalized reach distances, sagittal-plane joint kinematics (hip, knee, ankle), and center-of-pressure path velocity.

Main Results:

• A significant decrease in SEBT reach-distance scores was observed across all directions post-cryotherapy (P < .05).
• No significant changes were found in hip, knee, or ankle sagittal-plane kinematics (P > .05).
• A significant decrease in the mean velocity of the center-of-pressure path was noted in all reach directions post-cryotherapy (P < .05).

Conclusions:

• Immediate application of 15-minute ankle cryotherapy adversely affects dynamic postural stability.
• The observed impairment in balance suggests a potential increased risk for musculoskeletal injuries following this intervention.
• Further research is needed to explore recovery times and optimal cryotherapy protocols for athletes.