تأثیر مصرف مکمل کافئین بر عملکرد بی‌هوازی و شاخص خستگی در زمان‌های صبح و عصر

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه فیزیولوژی ورزشی، دانشکده علوم انسانی و اجتماعی، دانشگاه کردستان، سنندج، ایران

2 گروه فیزیولوژی ورزشی، دانشکده علوم انسانی و اجتماعی، دانشگاه کردستان، سنندج، ایران.

چکیده

زمینه و هدف: مصرف مکمل‌های ورزشی و نیز بررسی تأثیر اوقات روز بر بهبود عملکرد ورزشی از موضوعات مهم قابل‌توجه در گذشته و حال بوده است. هدف از مطالعه حاضر بررسی تأثیر مصرف مکمل کافئین بر عملکرد بی‌هوازی و شاخص خستگی در زمان‌های صبح و عصر در هنرجویان پسر رشته تربیت‌بدنی هنرستان-های علوم ورزشی بوده است.
روش کار: توان بی ‌هوازی آزمودنی‌ها (12n=) در آزمون رست به روش نمونه‌گیری در دسترس، یک‌سو کور، متقاطع و به شکل تصادفی تحت سه شرایط مصرف کافئین mg/kg 6 ، مصرف دارونما mg/kg 6 دکستروز و حالت پایه در دو نوبت صبح و عصر مورد ارزیابی قرار گرفت. جهت تجزیه و تحلیل داده ها از آزمون تحلیل واریانس با‌ اندازه‌گیری‌ مکرر و آزمون t همبسته استفاده گردید.
یافته‌ها: نتایج نشان داد که در متغیرهای مورد اندازه‌گیری اثر زمان (صبح و عصر) معنی‌دار بود (05/0P<)، درحالیکه اثر شرایط (کافئین، دارونما و حالت‌پایه) معنی‌دار نبود (05/0P>). تعامل زمان و شرایط تنها در حداقل توان و شاخص خستگی معنی‌دار بود (05/0P<).
نتیجه‌گیری: نتایج نشان داد که کافئین تاثیر معنی‌داری بر عملکرد بی‌هوازی آزمودنی‌ها ندارد و در هر سه شرایط عملکرد بی هوازی افراد در حالت صبح بهتر از عصر بود و تنها استثناء شاخص خستگی افراد می‌باشد که بین صبح وعصر تفاوتی مشاهده نشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

The effect of caffeine ingestion on anaerobic performance and fatigue index in the morning and the evening times.

نویسندگان [English]

  • Mohammad Rahman Rahimi 1
  • Ali Jafari 2
  • Hadi Golpasandi 2
1 ِDepartment of Exercise Physiology, Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj, Iran
2 Department of exercise physiology, , Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj, Iran.
چکیده [English]

Introduction: The consumption of sports supplement and also the effect of the effect of Times of the day on improving exercise performance have been important issues in the past and present. The aim of this study was to evaluate the effect of caffeine supplementation on anaerobic performance and fatigue index during the morning and afternoon in high school physical education student.
Methods: The anaerobic power of subjects (n =12) was determined by a single- blind, placebo controlled and crossover design, under three conditions of caffeine intake of 6 mg / kg, placebo in 6 mg / kg 6 dextrose and basal conditions in the morning and the evening Morning and evening were evaluated. To analyze the data, repeated measures ANOVA and t-test were used.
Results: The results showed that the variables measuring the effect of time (morning and evening) was significant. However, the effect of conditions (caffeine, placebo, and basal) was not significant (P> 0.05). The interaction of time and conditions was significant only in the minimum power and fatigue index (P <0.05).
Conclusion: The results showed that caffeine had no significant effect on the anaerobic function of the subjects. In all three conditions, the anaerobic function of the subjects was better in the morning than in the evening, and the only exception was fatigue index, which was not different between morning and evening.

کلیدواژه‌ها [English]

  • Keywords: RAST Test
  • Caffeine
  • Anaerobic Performance
  • fatigue index
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