مقایسه‌ی تأثیر هشت هفته تمرین تناوبی با شدت زیاد و تمرین تداومی با شدت متوسط بر متغیرهای فیزیولوژیک آزمون ورزشی در بیماران قلبی پس از عمل جراحی بای‌پس شریان کرونر

نوع مقاله : مقاله های پژوهشی

نویسندگان

1 استاد، گروه فیزیولوژی ورزشی، دانشکده‌ی تربیت بدنی، دانشگاه تهران، تهران، ایران

2 دانشجوی دکتری، گروه فیزیولوژی ورزشی، دانشکده‌ی تربیت بدنی، دانشگاه تهران، تهران، ایران

3 کارشناس ارشد، گروه فیزیولوژی ورزشی، دانشکده‌ی تربیت بدنی، دانشگاه تهران، تهران، ایران

چکیده

مقدمه: بازتوانی قلبی موجب بهبود ظرفیت عملکردی بیماران قلبی پس از عمل بای‌پس شریان کرونر (Coronary artery bypass graft یا CABG) می‌شود. بنابراین، هدف این مطالعه مقایسه‌ی هشت هفته تمرین تناوبی با تمرین تداومی بر متغیرهای فیزیولوژیک آزمون ورزشی در بیماران قلبی پس از عمل پیوند بای‌پس شریان کرونر بود.روش‌ها: در این مطالعه‌ی کارآزمایی بالینی، 30 بیمار قلبی مرکز قلب تهران که عمل جراحی CABG بر روی آن‌ها انجام شد، به طور تصادفی به دو گروه برنامه‌ی تمرینی تناوبی با شدت زیاد و تمرین تداومی با شدت متوسط (برنامه‌ی رایج) تقسیم شدند. برنامه‌ی گروه تناوبی شامل 6 تکرار 4 دقیقه‌ای با شدت 95-90 درصد ضربان قلب حداکثر و گروه تداومی 80-60 دقیقه با شدت 85-70 درصد ضربان قلب حداکثر سه جلسه در هفته به مدت هشت هفته بود. قبل و بعد از برنامه‌ی تمرینی، ظرفیت عملکردی (VO2 peak یا Peak oxygen uptake)، مسافت طی شده، زمان رسیدن تا واماندگی و ضربان قلب بیشینه هنگام اجرای آزمون ورزشی بروس برآورد شد. داده‌های جمع‌آوری شده، با استفاده از آزمون One-way analysis of variance (One-way ANOVA) و آزمون تعقیبی LSD (Fisher's least significant difference) تجزیه و تحلیل شدند.یافته‌ها: ظرفیت عملکردی به دنبال هر دو برنامه‌ی تمرینی، بدون تفاوت معنی‌دار بین دو گروه، افزایش معنی‌داری پیدا کرد (05/0 > P). افزایش مسافت طی شده، زمان رسیدن تا واماندگی و ضربان قلب بیشینه، پس از برنامه‌ی تناوبی بیشتر از برنامه‌ی تداومی بود (05/0 > P).نتیجه‌گیری: به نظر می‌رسد هر دو برنامه‌ی تمرینی تناوبی با شدت زیاد و تداومی با شدت متوسط موجب بهبود ظرفیت عملکردی بیماران قلبی پس از عمل بای‌پس شریان کرونر می‌شوند. با این حال، تمرین تناوبی نسبت به تداومی در برخی پارامترها مثل مسافت طی شده، زمان رسیدن تا واماندگی و ضربان قلب بیشینه هنگام آزمون ورزشی مؤثرتر بود.

کلیدواژه‌ها


عنوان مقاله [English]

Comparing the Effect of Eight Weeks of High-Intensity Interval Training and Moderate-Intensity Continuous Training on Physiological Variables of Exercise Stress Test in Cardiac Patient after Coronary Artery Bypass Graft

نویسندگان [English]

  • Abbas Ali Gaeini 1
  • Sadegh Satarifard 2
  • Ali Heidary 3
1 Professor, Department of Exercise Physiology, School of Physical Education, University of Tehran, Tehran, Iran
2 PhD Student, Department of Exercise Physiology, School of Physical Education, University of Tehran, Tehran, Iran
3 Department of Exercise Physiology, School of Physical Education, University of Tehran, Tehran, Iran
چکیده [English]

Background: Cardiac rehabilitation improves functional capacity in cardiac patients after coronary artery bypass. The aim of this study was to compare the eight weeks of interval training with continuous training on stress test physiological variables in patient with cardiac diseases after coronary artery bypass graft (CABG) surgery .Methods: In this clinical trial study, 30 patient with cardiac diseases in Tehran Heart Center (Iran) having had CABG surgery were randomly divided into two groups, high-intensity interval and continuous moderate-intensity training (program common). The program of interval group was included 4 repeats × 4 minutes at 90-95% peak of heart rate (HR) and continuous group, 60-80 minute at 70-85% peak HR, three sessions per week for 8 weeks. Functional capacity (VO2 peak), distance traveled, time to exhaustion and maximum heart rate  (HRmax) were assessed during the Bruce exercise stress test before and after the training program. The collected data were analyzed using the one-way analysis of variances (ANOVA) and post hoc Fisher's least significant difference (LSD) tests.Findings: Functional capacity was increased significantly following the both of training programs with no significant difference between the two groups (P < 0.05). The increases in traveled distance, time to exhaustion, and HRmax after interval program were more in interval program group (P < 0.05).Conclusion: It seems that both high-intensity interval and moderate-intensity continuous training improve functional capacity in cardiac patient with cardiac diseases after coronary artery bypass sugery. However, interval training was more beneficial than continuous training in some parameters such as traveled distance, time to exhaustion, and HRmax during exercise stress test.

کلیدواژه‌ها [English]

  • Exercise stress test
  • Interval training
  • Coronary artery bypass graft (CABG) surgery
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