کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6803451 | 1433542 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Restoration of post-activation depression of the H-reflex by treadmill exercise in aged rats
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
سالمندی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Restoration of post-activation depression of the H-reflex by treadmill exercise in aged rats Restoration of post-activation depression of the H-reflex by treadmill exercise in aged rats](/preview/png/6803451.png)
چکیده انگلیسی
The purpose of this study was to evaluate the effects of aging and chronic physical activity on the postactivation depression of the Hoffman reflex (H-reflex). The maximal amplitude H wave/maximal amplitude M wave ratio was measured, and the rate-sensitive depression of the H-reflex was assessed. Measurements were performed on sedentary rats aged of 3, 6, 12, and 20Â months and on animals aged of 12 and 20Â months performing an incremental treadmill exercise protocol during the last eight weeks preceding the recordings. At the end of the experiment, the muscle mass and/or body mass ratio was calculated. Results indicated that the H-reflex depression of the tibialis anterior and soleus muscles were present until age of 6 and 12Â months, respectively. For the tibialis anterior muscle, results also pointed out a decrease in the relative muscle mass with age and that the exercise allowed to restore the rate-sensitive depression of the H-reflex and to increase the relative muscle mass in comparison with sedentary animals. These findings clearly demonstrate that neural alteration of the spinal cord is prevented by activity in aged rats.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurobiology of Aging - Volume 42, June 2016, Pages 61-68
Journal: Neurobiology of Aging - Volume 42, June 2016, Pages 61-68
نویسندگان
Guillaume Caron, Tanguy Marqueste, Patrick Decherchi,