تأثیر هشت هفته تمرین ایزوکالریک با شدّت‌LTP1و LTP2 بر متغیرهای قلبی-ریوی مردان جوان غیر ورزشکار

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناس ارشد فیزیولوژی ورزشی، دانشگاه محقق اردبیلی ،ایران

2 استاد دانشگاه محقق اردبیلی ،ایران

3 دانشیار دانشگاه محقق اردبیلی ،ایران

چکیده

مقدمه و هدف: اثربخشی بهینه تمرینات ورزشی، چه در بعد همگانی و چه در بعد قهرمانی، از اهمیت زیادی برخوردار است. هدف از تحقیق حاضر، مقایسه تأثیر 8 هفته تمرین با شدت­های آستانه هوازی (LTP1) و آستانه بی­هوازی (LTP2) با کل کار و اکسیژن مصرفی مشابه بر پارامترهای قلبی- ریوی در مردان غیر ورزشکار بود.
مواد و روش­ها: 22 دانشجوی مرد غیر ورزشکار به­صورت داوطلبانه در این تحقیق شرکت کردند و بطور تصادفی به دو گروه آستانه هوازی (12 نفر، 61% HRmax) و آستانه بی­هوازی (10 نفر، 86% HRmax) تقسیم شدند. آزمودنی­ها قبل و پس ­از تمرینات آزمون فزاینده نوارگردان را برای تعیین حداکثر اکسیژن مصرفی (VO2max)، سرعت در آستانه بی­هوازی (vAT)، اکسیژن مصرفی در آستانه بی­هوازی (VO2 at AT) اجرا کردند. آزمودنی­های هر دو گروه سه روز در هفته به مدّت 8 هفته و با کل کار و اکسیژن مصرفی مشابه تمرین کردند. تفاوت درون گروهی و بین گروه­هی به ترتیب با استفاده از آزمون t همبسته و t مستقل انجام شد. اندازۀ اثر برای تغییرات معنی دار، با استفاده از آزمون مجذور امگا محاسبه شد.
یافته­ ها: نتایج تحقیق حاضر نشان داد که پس­از تمرینات اکسیژن مصرفی در آستانه بی­هوازی و vAT در هر دو گروه تمرینی افزایش معنادار و همچنین فشار خون و ضربان قلب استراحت بطور معناداری کاهش یافت (05/0P≤ ).  همچنین حداکثر اکسیژن مصرفی پس­از تمرین در آستانه بی­هوازی بطور معناداری افزایش یافت (009/0 =P)، در حالی­که در گروه آستانه هوازی افزایش معناداری مشاهده نشد. همچنین، نتایج نشان داد که  بین گروه­ها از نظر آماری، تفاوت معناداری وجود ندارد.
نتیجه­ گیری: در مجموع نتایج تحقیق حاضر نشان می­دهد که، وقتی حجم تمرین کنترل می­شود، شدت­ بالاتر تمرین نسبت به شدت پایین تمرین، در بهبود VO2max  افراد جوان غیر فعال مؤثرتر است.  

کلیدواژه‌ها


عنوان مقاله [English]

The effect of eight-week specific training with different intensities on cardio- pulmonary variables in non-athlete men

نویسندگان [English]

  • . . 1
  • . . 2
  • . . 3
1 .
2 .
3 .
چکیده [English]

Background and Purpose: The effectiveness of exercise training, whether in the sports for all or in the championships, is very important. The purpose of this study was to compare the effects of 8 weeks of training at the aerobic and anaerobic threshold intensities with equal total work and frequency on the cardiopulmonary parameters in non-athlete men.
Methodology: Twenty- tow untrained male university students volunteered to participate in this study and were divided randomly into two aerobic (N= 12; 61% HRmax) and anaerobic threshold (N= 9; 86% HRmax) groups. Pre and post the training, subjects performed a progressive exercise treadmill test for determine maximal oxygen consumption (VO2max), anaerobic threshold velocity (vAT) and Oxygen uptake at anaerobic threshold (VO2 at AT). Training program performed for 8 week and 3 sessions /week with the equal total work and oxygen consumption. The within groups as well as the between groups differences were evaluated by paired samples t-test and independent samples t-test respectively. The effect size was calculated for each significant difference by the means of the omega square method.
Results: Results of this study showed that after the training VO2 at AT and vAT were increased significantly in both exercising groups. Both groups had a marked decreased in resting HR and BP. Also, VO2max significantly increased in anaerobic threshold groups (P=0.009) while, There were no significant changes in VO2max in aerobic threshold group. Results of independent t-test showed that no significant differences between the two training program.
Conclusion: In conclusion, The results of this study demonstrate that When volume of exercise is controlled, higher intensity of exercise are more effective for improving VO2max than lower intensity of exercise in non- trained young men.

کلیدواژه‌ها [English]

  • Aerobic thresholds
  • Anaerobic threshold
  • vAT

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