Effects of High-Intensity Interval Training on Motor Skills Recovery in Sciatic Nerve Crush-Induced Rats
±è±âÇö, ½ÅÇü¼ö, Á¤³²Áø, Ȳº¸°¢,
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±è±âÇö ( Kim Ki-Hyun )
Kyungwoon University Department of Physical Therapy
½ÅÇü¼ö ( Shin Hyung-Soo )
Kyungwoon University Department of Physical Therapy
Á¤³²Áø ( Jung Nam-Jin )
Kyungwoon University Department of Physical Therapy
Ȳº¸°¢ ( Hwangbo Gak )
Daegu University Department of Physical Therapy
Abstract
PURPOSE: This study examined the effects of mild- intensity exercise (MIE) and high-intensity interval exercise (HIIE) on the recovery of the motor function over time in sciatic nerve crush injury rats.
METHODS: The MIE group ran on a treadmill at a speed of 8.3 m/min to perform low-intensity training with maximum oxygen uptakes ranging from 40 to 50%. The HIIE group ran on the treadmill at a speed of 25 m/min to perform high-intensity training with a maximum oxygen uptake of 80%. The interval training was performed based on a 1:1 work-to-rest ratio. The effects of each form of exercise on the rats¡¯ walking abilities following their recovery from the peripheral nerve injuries were evaluated based on the results of behavior tests performed at one and 14 days.
RESULTS: According to the test results, the MIE group showed significant improvements in the rats¡¯ ankle angle in the initial stance phase, and in the ankle and knee angles in the toe-off phase (p<.05). The HIIE group exhibited significant improvements in the ankle and knee angles in the initial stance phase, SFI(p<.05).
CONCLUSION: The state of such patients can be improved by applying the results of this study in that MIE and HIIE on a treadmill can contribute to the recovery of the peripheral nerve and motor skill. In particular, MIE is used as a walking functional training in the toe-off stance phase, while HIIE is suitable in the initial stance stage.
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Sciatic nerve injury; High-intensity interval training; Motor skills recovery
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