تغییرپذیری فشار خون، ضربان و شاخص اکسیژن مصرفی قلب و ارتباط آنها با نیمرخ چربی‌های بدن در افراد فعال و غیرفعال

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار گروه فیزیولوژی ورزشی دانشگاه تربیت دبیر شهید رجایی تهران

2 مربی دانشگاه آزاد اسلامی‌ واحد شوشتر

3 دانشجوی دکتری فیزیولوژی ورزشی دانشگاه تربیت دبیر شهید رجایی تهران

چکیده

هدف از پژوهش حاضر بررسی تغییرات فشار خون، ضربان و شاخص اکسیژن مصرفی قلب و ارتباط آن با نیمرخ چربی‌های بدن در دانشجویان فعال و غیرفعال است. به این منظور ده دانشجوی فعال (میانگین سن 21 سال، وزن 1/68 کیلوگرم و قد 1/174 سانتی‌متر) و ده دانشجوی غیرفعال (میانگین سن 5/21 سال، وزن 07/73 کیلوگرم و قد 177 سانتی‌متر) به‌صورت تصادفی از بین دانشجویان پسر دانشگاه تربیت دبیر شهید رجایی که برای شرکت در پژوهش داوطلب شده بودند، انتخاب شدند. شرکت‌کنندگان تست کانینگهام فالکنر را شامل دویدن روی نوار گردان با شیب20 درصد و سرعت km/hr9/12 تا رسیدن به واماندگی انجام ‌دادند. ابتدا فشار خون سیستولی (SBP) و دیاستولی (DBP) و ضربان قلب (HR) در حالت نشسته، حاصل‌ضرب دوگانه (DP)، شاخص‌های چربی خون و احشایی، نسبت چربی و نمایۀ تودۀ بدن پیش از فعالیت اندازه‌گیری شد. در ادامه نیز BP و HR در حالت نشسته و DP هر شرکت‌کننده بلافاصله پس از تست و 3 دقیقه بعد دوباره سنجیده شد. برای تحلیل آماری از آزمون‌های تحلیل واریانس و کواریانس با اندازه‌گیری مکرر استفاده شد. یافته‌ها نشان داد بازیافت HR (006/0=P و 012/6=F)، SBP (02/0=P و 353/4=F) و DP (004/0=P و 38/6=F) در افراد فعال بهتر صورت می‌گیرد. اصلاح نتایج با شاخص‌های اضافه‌وزن و چربی‌های خون، ارتباط بین برخی از این عوامل با بازیافت نامناسب در افراد غیرفعال را تأیید کرد. ازاین‌رو نظر به این یافته‌ها می‌توان گفت آمادگی و فعالیت بدنی بر بازیافت بهتر شاخص‌های همودینامیک بعد از فعالیت ورزشی تأثیر مثبت دارد، هرچند تفاوتی در مقادیر استراحت و فعالیت مشاهده نشد. اضافه‌وزن و دیس لپیدمیا می‌تواند بخشی از تفاوت‌های بین افراد فعال و غیرفعال را در این زمینه توضیح دهد. ازاین‌رو کنترل این عوامل با فعالیت ورزشی و رژیم غذایی مناسب توصیه می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Variation of Blood Pressure, Heart Rate and Oxygen Consumption and Their Relationship with Body Lipid Profile in Active and Inactive Students

نویسندگان [English]

  • majid kashef 1
  • maysam shabaaninia 2
  • sara zare karizak 3
1 Associate Professor, Exercise Physiology Department, Shahid Rajaee Teacher Training University of Tehran, Tehran, Iran
2 . Lecturer of Islamic Azad University, Shooshtar Branch, Shooshtar, Iran
3 . PhD Student of Exercise Physiology, Shahid Rajaee Teacher Training University of Tehran, Tehran, Iran
چکیده [English]

This study aimed at investigating the variations of blood pressure, heart rate and oxygen consumption and their relationship with body lipid profile in active and inactive students. 10 active students (mean age 21 yr, weight 68.1 kg and height 174.1 cm) and 10 inactive students (mean age 21.5 yr, weight 73.07 kg and height 177 cm) from Shahid Rajaee Teacher Training University who volunteered to participate in the study were randomly selected. The participants performed Canningham Faulkner submaximal treadmill test until exhaustion (slope: 20%, speed: 12.9 km/hr). Firstly, sitting systolic and diastolic blood pressures (SBP, DBP), sitting heart rate (HR), double product (DP), blood lipid, visceral fat, body fat ratio and body mass index were measured before the test. Then sitting BP and HR and DP were measured immediately after the test and after 3 minutes. The analysis of variance and covariance with repeated measures were used for data analysis. The results showed that recovery of HR (P=0.006, F=6.012), SBP (P=0.02, F=4.353) and DP (P=0.004, F=6.38) occurred more in active students. Modification of results with overweight and blood lipids showed the relationship between some of these indices and poor recovery in inactive students. So it can be stated that fitness and physical activity had positive effects on better recovery of hemodynamic indices after exercise even though no differences were observed in resting and exercise values. Overweight and dyslipidemia can partially explain some of these differences between active and inactive

کلیدواژه‌ها [English]

  • blood pressure
  • double product
  • dyslipidemia
  • heart rate
  • overweight
  • Physical Activity
  • recovery
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