اثر مدت فعالیت ورزشی استقامتی بر سطوح PYY در زنان ورزشکار

نوع مقاله: مقاله پژوهشی

نویسندگان

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

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

چکیده

زمینه و 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 بررسی: نه 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. نمونه های 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. مدت فعالیت اثری بر غلظت پلاسمایی PYY نداشت و افزایش آن پس از تمام جلسات تجربی مشابه بود.

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 Department of Physical Education and Sport Sciences, Marivan Branch, Islamic Azad University, Marivan, Iran,
2 Assistant Professor of Sport Physiology, Department of Sport Science, Marivan Azad University, Marivan - Iran.
چکیده [English]

Background and 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.
Materials and 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.
Conclusion: Acute exercise increased PYY in all experimental sessions. 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
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