کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5925900 1571323 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical activity of the diaphragm during progressive cycling exercise in endurance-trained men
ترجمه فارسی عنوان
فعالیت الکتریکی دیافراگم در طی تمرین دوچرخه سواری پیشرفته در مردان آموزش دیده استقامت
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی فیزیولوژی
چکیده انگلیسی
The study aimed to investigate diaphragm respiratory drive modulation through electrical activity of the diaphragm (EADi) during progressive cycling in endurance-trained men (N = 7) and to test day-to-day measurement reliability. Normalized EADi increased at exercise intensities from 40% workload (WL) to 70% and 85%WL but plateaued from 70% to 85% (p < 0.05). V˙O2, V˙CO2, V˙E, increased at all exercise intensities, where Vt and BF increased from 40% to 55% WL and from 70% to 85% and RER increased at 70% and 85% (p < 0.05). Bland-Altman plots of normalized EADi showed bias of 0.9% and −6.4% and limits of agreement of ±36.0% and ±30.4% for absolute measurements and relative changes from 40% WL, respectively. Within-day variability appeared constant indicating that measurements within a trial are reliable. Results suggest that diaphragm respiratory drive increases at moderate exercise intensities, but plateaus at high intensities where other respiratory muscles might contribute significantly to the breathing effort, perhaps to “protect” against diaphragm fatigue.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 205, 1 January 2015, Pages 77-83
نویسندگان
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