کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5926108 1167338 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Respiratory motor output during an inspiratory capacity maneuver is preserved despite submaximal exercise
ترجمه فارسی عنوان
خروجی موتور تنفسی در طی یک مانور ظرفیت نفوذی با وجود تمرینات زیرمجموعه حفظ می شود
کلمات کلیدی
ظرفیت التهابی دیافراگم، تست ورزش الکترومیوگرافی دیافراگمی،
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی فیزیولوژی
چکیده انگلیسی


- Diaphragm EMG reached a plateau during either 80% or 60% constant work rate exercise tests.
- Plateau of the diaphragm EMG during exercise does not mean that there is neural inhibition.
- Inspiratory capacity maneuver seldom entails a maximal effort even in well trained normal subjects.

It is unknown whether respiratory motor output is constrained during exhaustive exercise in healthy adults. We hypothesised that neural inhibition did occur; to test this hypothesis we measured diaphragm EMG from a maximal inspiratory capacity maneuver (EMGdi-IC) at rest and during exercise. EMGdi-IC was measured before and after the amplitude of the diaphragm EMG entered a plateau phase in eleven healthy adults undertaking exercise at 60% and 80% of maximal workload achieved from incremental exercise. The mean EMGdi-IC at rest was 65 ± 16% of the maximum that could be obtained from a battery of inspiratory tasks. Before and after the plateau phase of diaphragm EMG, EMGdi-IC was 68 ± 13% and 72 ± 12% (p > 0.05) during 60% of the maximum workload, and was 70 ± 13% and 78 ± 13% (p > 0.05) during 80% of the maximum workload achieved on an incremental test. A further sub-study in which 5 participants exercised at 90% of the maximum workload also showed that EMGdi-IC was not diminished during exercise. Our data show that exercise condition does not reduce the magnitude of EMGdi-IC. This argues against neural inhibition as feature of submaximal exercise in healthy adults.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 189, Issue 1, 1 October 2013, Pages 87-92
نویسندگان
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