نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I
نویسندگان
1 دانشجوی دکتری، گروه فیزیولوژی ورزشی، دانشکدۀ علوم ورزشی ، دانشگاه مازندران، بابلسر، ایران
2 .استادیار، گروه فیزیولوژی ورزشی، دانشکدۀ علوم ورزشی، دانشگاه مازندران، بابلسر، ایران
3 .استاد، گروه فیزیولوژی ورزشی، دانشکدۀ علوم ورزشی، دانشگاه مازندران، بابلسر، ایران و مرکز تحقیقات سلامت و عملکرد ورزشی، گروه فیزیولوژی ورزشی، دانشکدۀ علوم ورزشی، دانشگاه مازندران، بابلسر، ایران
چکیده
هدف تحقیق حاضر بررسی تأثیرات پوشیدن ماسک‌های جراحی و N95 بر پاسخ شاخص‌های فیزیولوژیک و الکتروکاردیوگرام متعاقب تمرین بیشینه در زنان سالم بود. در یک طرح نیم‌تجربی، 36 زن داوطلب سالم (میانگین سن و BMI به‌ترتیب 9/3±3/30 سال و 1/3±47/22 کیلوگرم بر متر مربع) به‌طور تصادفی به 3 گروه 12 نفره شامل تمرین بیشینه‌ای با ماسک N95 (Max-N95 mask)، تمرین بیشینه‌ای با ماسک جراحی (Max-Surgical mask) و گروه فعالیت بیشینه بدون ماسک (MaxNomask) تقسیم شدند. آزمودنی‌ها در گروه‌های مذکور، پروتکل بیشینه‌ای بروس اصلاح شده را به‌ترتیب با ماسک جراحی، ماسک N95 یا بدون ماسک اجرا کردند. شاخص‌های فیزیولوژیک، الکتروکاردیوگرافی و زمان واماندگی ارزیابی شدند. داده‌ها با تحلیل واریانس یکطرفه در سطح 05/0P ≤ بررسی شد. فعالیت واماندهساز روی نوار گردان در گروه ماسک N95 موجب کاهش معنادار فاصلۀ QTc نسبت به گروه ماسک جراحی(001/0>P) و گروه کنترل بدون ماسک (027/0=P) شد. هرچند افزایش مقادیر بین‌گروهی ضربان قلب و QRS متعاقب فعالیت واماندهساز معنادار نبود، اما بسیار به سطح معناداری نزدیک بود (مقدار P به‌ترتیب 073/0 و 075/0).نتایج نشان داد در افراد سالم، فعالیت بدنی بیشینه‌ای نظارت‌شده به‌ویژه با ماسک جراحی عملی و ایمن است و فقط با تغییرات جزئی در شاخص‌های ECG و فیزیولوژیک به‌ویژه کاهش جزئی در QTc همراه است. مطالعات آتی باید تأثیر فعالیت بدنی با شدت‌های مختلف در طی استفاده از ماسک‌ها را در افراد سالمند یا مبتلا به بیماری‌های التهابی مزمن ارزیابی کنند.
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
The effect of two types of respiratory masks during exhaustive activity in corona pandemic on physiological and electrocardiography markers in middle-aged women
نویسندگان [English]
- Fourozan Zahedmanesh 1
- Khadijeh Nasiri 2
- Valiollah Dabidi Roshan 3
1 Ph.D student in Exercise Physiology, University of Mazandaran, Babolsar, Iran.
2 Assistant Professor, Department of Exercise Physiology, Physical Education Faculty, Mazandaran University, Babolsar, Iran.
3 Department of Sports Physiology, Faculty of Physical Education and Sport Sciences, University, of Mazandaran, Babolsar, Iran.
چکیده [English]
Background and aim: Current study aim was to examine the effects of wearing surgical and N95 facemasks on response of the physiological and electrocardiography markers include; QRS complex, QT interval, ST depression and P amplitude during exhaustive maximal exercise in middle-aged women.
Methods; In a semi- experimental protocol, 36 healthy volunteers females (mean age and BMI of 30.3 ± 3.9 years and 22.47 ± 3.1 kg/m2, respectively) randomly allocated to three groups of 12 peoples consist to; Max-N95 mask, Max-Surgical mask, and Max-Nomask). Subjects in the aforesaid groups performed a maximal Bruce protocol, while wearing a surgical mask, an N95 mask and without a mask, respectively. Physiological and electrocardiography parameters and time to exhaustion were compared. Data was analyzed to one-way ANOVA at P≤ 0.05 level.
Result: Maximal exercising with N95 mask was associated with a significant decrease in QTc interval levels, as compared to Max-Surgical mask (P<0.05) and Max-Nomask (P<0.027) groups. Although, the intergroup differences increase in heart rate and QRS following Bruce protocol were not differ significantly, very nearly significant level (P value was 0.073 and 0.075, respectively).
Conclusion: In healthy subjects, supervised maximal physical activity, particularly with a surgical mask is feasible, safe, and associated with only minor changes in ECG and physiological parameters, specifically a mild decrease in QTc. Future studies should examine impact of physical activity with various intensities, while using any mask in aged persons and or suffering from chronic inflammatory diseases.
کلیدواژه‌ها [English]
- Respiratory Masks
- Coronavirus 2019 Pandemic
- Maximal Physical Activity
- Electrocardiogram
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