Influence of Induced Plantar Hypothermia on the Achilles Tendon Stretch Reflex
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چکیده
Previous studies indicate that plantar cutaneous afferents participate in modulation of muscle reflexes; however, the mechanisms remain unclear. Thus, the aim of this study was to investigate the influence of hypothermically reduced plantar foot sensation on the Achilles tendon reflex. Short latency responses of three muscles were analyzed under three temperatures: Stage I (25°C), Stage II (12°C), Stage IIIa (0°C) and Stage IIIb (0°C). Hypothermia was induced by a self-built thermal-plate and controlled by an infrared thermal camera. Results showed significant delays only for M. soleus when comparing the first temperature conditions (25°C and 12°C) to the last one (0°C). However, these delays were not relevant. Further investigations are suggested to elucidate the role of afferent inputs of the foot sole on stretch reflex responses.
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تاریخ انتشار 2013