اثر مدت فعالیت ورزشی استقامتی بر سطوح PYY در زنان ورزشکار

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

نویسندگان

1 کارشناسی ارشد فیزیولوژی ورزشی، گروه تربیت بدنی و علوم ورزشی، دانشگاه آزاد اسلامی، واحد مریوان، مریوان، ایران

2 استادیار فیزولوژی ورزشی، گروه علوم ورزشی ، دانشگاه آزاد مریوان، مریوان، ایران

چکیده

 هدف: PYY باعث سرکوب اشتهاء، کاهش انرژی دریافتی و افزایش انرژی مصرفی بدن می شود. فعالیت حاد ورزشی موجب افزایش آن می شود اما اثر مدت فعالیت ورزشی بر سطوح PYY مشخص نیست. هدف از مطالعه حاضر بررسی اثرات مدت فعالیت ورزشی بر سطوح پلاسمایی PYY در زنان ورزشکار بود.  روش شناسی: 9 آزمودنی (سن 9/4±3/25 سال، وزن 8/5±6/73 کیلوگرم، قد 9/3±4/171سانتی متر و درصد چربی 85/4±97/19) برای شرکت در این مطالعه داوطلب شدند. آزمودنی ها صبحانه استاندارد دریافت کردند و متعاقب آن فعالیت روی چرخ کارسنج با شدت 60 درصد حداکثر ضربان قلب (220-سن) به مدت 30، 60 و 90 دقیقه یا استراحت (جلسه کنترل) انجام دادند. ترتیب جلسات به این صورت بود که در جلسه اول فعالیت به مدت 60 دقیقه، جلسه دوم کنترل، جلسه سوم 90 دقیقه و جلسه چهارم 30 دقیقه اجرا شد. نمونه­های خونی قبل از فعالیت، بلافاصله بعد و 60 دقیقه پس از آن جهت اندازه گیری غلظت PYY جمع آوری شد. داده­ها با استفاده از آزمون آنوای دوطرفه با اندازه­گیری مکرر و آزمون تعقیبی توکی آنالیز شد. یافته‌ها: فعالیت حاد موجب افزایش PYY در تمام جلسات تجربی شد (05/0>(P. مدت فعالیت اثری بر غلظت پلاسمایی PYY نداشت و افزایش آن پس از تمام جلسات تجربی مشابه بود. نتیجه‌گیری: در نتیجه مدت فعالیت ورزشی (30، 60 و 90 دقیقه) در زنان ورزشکار اثری روی اندازه PYY ندارد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Influence of Endurance Exercise Duration on PYY Levels in Athletes Females

نویسندگان [English]

  • Nasim Matapour 1
  • Hassan Faraji 2
1 Msc of Exercise Physiology, Department of Physical Education, Marivan Of Islamic Azad University, Marivan, Iran
2 Assistant Professor of Exercise Physiology, Department of Sport Science, Islamic Azad University, Marivan Of Marivan, Iran
چکیده [English]

Aim: PYY suppresses appetite, reduces energy intake and increases energy intake. Acute exercise can increase it, but the effect of exercise activity on PYY levels is unclear. This study aimed to evaluate the effects of exercise duration on the plasma levels of peptide YY (PYY) in female recreational athletes. Methods: Nine subjects (aged 25.3±4.9 years, body mass 73.6±5.8 kg,  height  171.4±3.9  cm,  and  body  fat   19.9±4.8 %)  volunteered  to  participate  in  this  study.  Subjects received a standardized breakfast, which was followed by constant cycling exercise at 60% HRmax ( 220-age) for 30, 60 and 90 min, or rest (control session). Blood samples were collected before, immediately after and 60 min after exercise to assess plasma PYY concentrations. Data were analyzed by repeated measures two way ANOVA and Tukey post hoc test at the significant level (p <0.05).  Results: Plasma PYY were unaffected by duration of exercise and were higher than before exercise at immediately after exercise trials similarly. Acute exercise increased PYY in all experimental sessions. Conclusions: The duration of exercise did not affect the plasma concentration of PYY and its increase was similar after all experimental sessions.

کلیدواژه‌ها [English]

  • Duration of Exercise
  • Peptide YY
  • Appetite

مراجع

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مطالعات کاربردی تندرستی در فیزیولوژی ورزش
دوره 6، شماره 1
فروردین 1398
صفحه 31-36

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سابقه مقاله

  • تاریخ دریافت: 04 تیر 1398
  • تاریخ بازنگری: 11 مرداد 1398
  • تاریخ پذیرش: 22 شهریور 1398

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