نوع مقاله : مقاله پژوهشی Released under CC BY-NC 4.0 license I Open Access I

نویسندگان

1 دانشجوی دکتری، گروه فیزیولوژی ورزشی، دانشکدة علوم ورزشی، دانشگاه اصفهان، اصفهان، ایران

2 دانشیار، گروه فیزیولوژی ورزشی، دانشکدة علوم ورزشی، دانشگاه اصفهان، اصفهان، ایران

3 استادیار، مرکز تحقیقات متابولیک کبد، مرکز آموزشی درمانی کودکان امام حسین (ع)، دانشگاه علوم پزشکی اصفهان، اصفهان،

چکیده

هدف پژوهش حاضر بررسی رابطة بین سطوح سرمی سالوسین‌ها با نیمرخ لیپیدی، مقاومت انسولینی آمادگی قلبی تنفسی، ترکیب بدنی و درصد چربی بدن متعاقب یک دوره تمرینات تناوبی منتخب با شدت‌های متفاوت در زنان دارای اضافه ‌وزن و چاق بود. در این مطالعه 40 زن غیرفعال در 3 گروه همگن به شکل هدفمند تقسیم شدند: کنترل (14=n ؛ kg/m28/2± 2/30=BMI)؛ تمرین تناوبی با شدت متوسط،80-75%ضربان قلب بیشینه (13=n ؛kg/m23/3±2/31=BMI) و تناوبی با شدت زیاد، 95-90%ضربان قلب بیشینه (13=n؛ kg/m24/3 ±19/30=BMI). آزمودنی‌های تجربی به مدت 8 هفته در تمرینات تناوبی رکاب زدن با شدت‌های مختلف شرکت داشتند. نمونه‌گیری خون به‌ترتیب به فاصلة 48 ساعت قبل از شروع اولین جلسة تمرینی و 48 ساعت پس از آخرین جلسة تمرینی انجام گرفت و متغیرهای تحقیق در شرایط یکسان اندازه‌گیری شدند. از آزمون‌ ضریب همبستگی پیرسون برای تحلیل آماری داده‌ها در ســطح 05/0P< استفاده شد. نتایج نشان داد که میان سطوح سالوسین بتا و کلسترول تام، سالوسین آلفا و HDL، سالوسین آلفا و آمادگی قلبی تنفسی آزمودنی‌ها ارتباط مثبت و معنادار، و میان سالوسین آلفا و درصد چربی بدن ارتباط معکوس و معناداری وجود دارد. به‌نظر می‌رسد تمرینات تناوبی با شدت‌های مختلف می‌توانند در بهبود آمادگی قلبی و سلامت عمومی افراد چاق مؤثر باشند. از آنجا که بین شدت تمرینات تناوبی و بهبود آمادگی قلبی تنفسی، مقاومت انسولینی و نیمرخ لیپیدی آزمودنی‌ها رابطة قابل توجهی وجود دارد، بنابراین انجام تمرینات تناوبی با شدت بالا برای توسعة تندرستی این گروه از افراد جامعه پیشنهاد می‌شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

The Relationship between Serum Levels of Alpha and Beta Salusins and Lipid Profile, Insulin Resistance, Cardio-Respiratory Fitness and the Effect of Interval Training with Different Intensities in Overweight/Obese Women

نویسندگان [English]

  • Maryam Nazari 1
  • Vazgan Minasian 2
  • Silva Hovsepian 3

1 Ph.D. Student, Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran

2 Associate Professor, Department of Exercise physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran

3 Assistant Professor, Metabolic Liver Disease Research Center, Imam Hossien Children’s Hospital, Isfahan University of Medical Sciences, Isfahan, Iran

چکیده [English]

The aim of this study was to investigate the relationship between serum levels of salusins and lipid profile, insulin resistance, cardio-respiratory fitness, body composition and body fat percentage after a period of selected interval training with different intensities in overweight/obese women. In this study, 40 sedentary women were divided into 3 homogeneous groups purposively: control (BMI=30.2±2.8 kg/m2, n=14), moderate-intensity interval training: 75-80% HRmax (BMI=31.2±3.3 kg/m2, n=13), and high-intensity interval training: 90-95% HRmax (BMI=30.19±3.4 kg/m2, n=13). The subjects of experimental groups participated in the interval training (pedaling) with different intensities for 8 weeks. Blood samples were collected 48 hours before the first training session and 48 hours after the last training session. The research variables were measured under similar conditions. Pearson correlation coefficient test was used to statistically analyze the data (P<0.05). The findings revealed significant positive relationships between salusin β levels and total cholesterol, salusin α and HDL and salusin α and cardio-respiratory fitness; there was a significant reverse relationship between salusin α and body fat percentage. It seems that interval training with different intensities can influence the improvement of cardio fitness and general health of obese individuals. Since there is a considerable relationship between the intensity of interval training and the improvement of cardio-respiratory fitness, insulin resistance and lipid profile, high-intensity interval training is recommended to improve well-being of this group of people.

کلیدواژه‌ها [English]

  • Obesity
  • salusin α
  • salusin β
  • training
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