نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه تبریز/دانشکده تربیت بدنی و علوم ورزشی گروه فیزیولوژی ورزشی
2 دانشگاه آزاد اسلامی واحد کرج/ دانشکده تربیت بدنی و علوم ورزشی،گروه فیزیولوژی ورزشی.
چکیده
زمینهوهدف: در افراد چاق عوامل خطرزای قلبی – عروقی در حد بحرانی هستند، اما با تدابیر تغذیه ای و تمرینی مناسب، می توان از پیشرفت خطر و احتمال بیماری جلوگیری کرد. هدف پژوهش حاضر، بررسی تاثیر 8 هفته تمرین هوازی و مصرف چای سبز بر برخی عوامل خطرزای قلبی- عروقی زنان چاق بود. روشتحقیق:بدین منظور 46 زن چاق میان سال سالم به صورت داوطلبانه در تحقیق شرکت کرده و به طور تصادفی در 4 گروه تمرین هوازی (n=13) گروه مصرف چای سبز (n=11)، تمرین هوازی+ مصرف چای سبز (n=12) و گروه کنترل (n=10)؛ قرار گرفتند.گروه تمرین هوازی به مدت 8 هفته، هر هفته 3 جلسه به مدت 60 دقیقه با شدت 55 تا 65 درصد حداکثر ضربان قلب ذخیره، تمرین هوازی را اجرا کردند.گروه مصرف چای سبز در همین مدت زمان، روزانه سه وعده و در هر وعده 5/2 گرم مکمل چای سبز نوشیدند. گروه تمرین هوازی+ مصرف چای سبز همزمان با مصرف چای سبز، تمرین هوازی را اجرا کردند. بر روی گروه کنترل هیچ مداخله ای صورت نگرفت.48 ساعت قبل و بعد از برنامه تمرینی در شرایط ناشتا، نمونه های خونی گرفته شد و سپس با روش های استاندارد، مقادیر لیپوپروتئین با چگالی پایین (LDL)، لیپوپروتئین با چگالی بالا (HDL)، تری گلیسیرید(TG) و پروتئین واکنش گر C با حساسیت بالا (hs-CRP) اندزه گیری شدند. برای بررسی طبیعی بودن داده ها از آزمون کلموگروف- اسمیرنف و برای بررسی تغییرات مقادیر متغیرهای وابسته از آزمون تحلیل واریانس یک طرفه(ANOVA) و آزمون تعقیبی شفه در سطح معنی داری 0/05>pاستفاده شد. یافتهها: بین تغییرات hs-CRP در چهار گروه تفاوت معنی داری مشاهده شد (0/0001=p)، به گونه ای که مقدار آن در گروه تمرین+ چای سبز نسبت به سه گروه چای سبز(0/001=p)، تمرین هوازی (0/03=p) و گروه کنترل (0/0001=p) به طور معنی دار پایین تر بود. همچنین بین تغییرات LDL-C نیز در چهار گروه تفاوت معنی داری مشاهده شد (0/009=p)، طوری که در گروه تمری+ چای سبز (0/01=p)و تمرین هوازی (0/03=p) نسبت به گروه کنترل به طور معنی دار پایین تر بود. با این وجود، HDL-C فقط در گروه چای سبز نسبت به گروه کنترل افزایش معنی داری (0/007=p) داشت، به عاوه، تغییرات TG در چهار گروه تفاوت معنی داری نداشت (0/20=p)، اما در درصد چربی زیر پوستی در هر سه گروه تجربی به طور معنی دار (0/0001=p)کاهش یافت. نتیجهگیری: در صورتی که تمرین هوازی با مصرف چای سبز همراه شود، به دلیل اثر آنتی اکسیدانی و ضد التهابی این مکمل، بهبود بیشتری در عوامل خطر زای قلبی – عروقی زنان چاق ایجاد خواهد شد.
کلیدواژه‌ها
عنوان مقاله [English]
The effects of 8 weeks aerobic exercise training along with green tea consumption on the cardiovascular risk factors in obese women
نویسندگان [English]
- Javad Vakili 1
- Leila Hosseinpour 2
1
2
چکیده [English]
Background and Aim: Although the cardiovascular risk factors are critical in obese women, it is possible to control related problems using by fiseable exercise training and nutrition strerategies. The aim of this study was to investigate the effects of 8 weeks aerobic exercise training along with green tea consumption on the some cardiovascular risk factors in obese women. Materials and Methods: 46 healthy obese women voluntarily participated in this study and divided randomly into 4 groups including aerobic training (n=13), green tea (n=11), aerobic training+green tea (n=12) and control (n=10) groups. Aerobic training program included aerobic exercises up to 60 minutes at 55%- 65% maximum reserve heart rate, three sessions per week which lasted for 8 weeks. Green tea group brewed 2.5 g green tea in every meal during 8 weeks. Aerobic training+green tea group performed aerobic exercises along with green tea consumption but the control group received no intervention. The blood samples were collected 48 h before and after 8 weeks of protocol in fasting status. The low density lipoprotein (LDL-C), high density lipoprotein (HDL-C), triglyceride (TG) and high sensitive C-reactive protein (hs-CRP) were measured using standard methods. To determine normal distribution of data, we used the Kolmogorov-Smirnovtest; then it is applied the one-way analysis of variance (ANOVA) and Scheffe tests in significant level of p<0.05. Result: There were significant differences (p=0.0001) in hs-CRP variations between groups so that lesser value observed in the aerobic exercise+green tea group than green tea (p=0.001), aerobic training (p=0.03) and control (p=0.0001) groups. Also, it is observed significant differences in LDL-C variations between groups (p=0.009) so that its value had significant reduction in aerobic exercise+green tea (p=0.01) and aerobic exercise (p=0.03) groups than control group. On the other hand, the HDL-C variations was higher in the green tea group than control group (p=0.007), while there were no significantly differences between other groups. Moreover, although all experimental groups showed significant reduction (p=0.0001) in subcutaneous fat percent than control group; there were no significantly differences (p=0.20) in TG between groups. Conclusion: Perform of aerobic exercise along with green tea consumption will induce more improvement in cardiovascular risk factors of obese women because of its antioxidant anti-inflammatory effects of this supplement.
کلیدواژه‌ها [English]
- Aerobic exercise
- Green tea
- Cardiovascular risk factors
- Obese women
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