کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2848504 1167426 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Exercise-induced depression of the diaphragm motor evoked potential is not affected by non-invasive ventilation
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی فیزیولوژی
پیش نمایش صفحه اول مقاله
Exercise-induced depression of the diaphragm motor evoked potential is not affected by non-invasive ventilation
چکیده انگلیسی
Whole body exercise is followed by a depression of the diaphragm motor evoked potential (MEP). It is unknown whether the change is due to diaphragm activity or whole body exercise. To test the hypothesis that exercise-induced MEP depression was related to diaphragm activity, we performed two experiments. The first examined the effect of whole body exercise, performed with and without the use of non-invasive ventilation (NIV). NIV resulted in significant unloading of the diaphragm (pressure time product 101 ± 68 cm H2O/s/min versus 278  ±  95 cm H2O/s/min, p < 0.001). Both conditions produced significant MEP depression compared to the control condition (% drop at 5 min, after exercise and exercise with NIV: 29 and 34%, p = 0.77). Study 2 compared exercise with isocapnic hyperventilation. At 20 min the MEP had fallen by 29% in the exercise session versus 5% with hyperventilation (p = 0.098). We conclude that the work of breathing during whole body exercise is not the primary driver of exercise-induced diaphragm MEP depression.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 155, Issue 3, 15 March 2007, Pages 243-254
نویسندگان
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