کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2846623 1571297 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of consistent practice of yogic breathing exercises on the human cardiorespiratory system
ترجمه فارسی عنوان
اثر تمرینات تنفس یوگا بر سیستم قلبی عروقی انسان
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی فیزیولوژی
چکیده انگلیسی


• The effect of yogic breathing exercise (YBE) on chemosensitivity was investigated.
• Practice of YBE can significantly alter end-tidal cases.
• Practice of YBE results in complex cerebrovascular and cardiovascular oscillations.
• Consistent practice of YBE may reduce chemosensitivity.

The purpose of this investigation was to quantify the cardiovascular, respiratory, and cerebrovascular effects of two common yogic breathing exercises (YBE): bhastrika and chaturbhuj; and to determine the effect of their consistent practice on chemosensitivity. The first study was cross-sectional and compared experienced yogic breathers (YB) with matched controls; whereas the second was a 10-week longitudinal training study. The results support four major findings. First chaturbhuj resulted in a hypoxic stimulus in experienced YB compared to control [end-tidal oxygen tension (PETO2), YB: 77.5 ± 5.7 mmHg, P < 0.05; control: 94.3 ± 12.0 mmHg]. Second, performance of chaturbhuj resulted in cyclic oscillations of mean arterial pressure (MAP), heart rate (HR), and middle cerebral artery velocity (MCAv) consistent with the phases of respiration. Third, post training, performance of bhastrika reduced PETO2 (end breath-hold: 90.8 8 ± 12.1 mmHg) compared to rest (100.1 ± 7.4, P < 0.05); it also resulted in significantly increased MAP at end breath-hold (96.7 ± 13.0 mmHg) compared to rest (83.0 ± 6.6 mmHg, P < 0.05) and significantly increased mean MCAv (end breath-hold: 87.4 ± 23.0 cm/s, P < 0.05; rest: 55.8 ± 26.3 cm/s). Fourth, experienced YB had lower central chemosensitivity than controls (YB: 3.4 ± 0.4; control: 4.6 ± 1.2 L/min/mmHg; P < 0.05). In conclusion, YBE significantly alter end-tidal gases, resulting in complex oscillations of cardiovascular and cerebrovascular variables, and if practiced consistently, may reduce chemosensitivity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Respiratory Physiology & Neurobiology - Volume 233, November 2016, Pages 41–51
نویسندگان
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