تأثیر مکمل دهی حاد بیکربنات سدیم بر عملکرد بی هوازی مردان دوچرخه سوار نخبه و غیر نخبه

محمّدی گجوتی, آرمین; نیکوخصلت, سعید; وکیلی, جواد; امیرساسان, رامین; سهرابی, میرمعصوم

doi:10.52547/joeppa.13.1.57

تأثیر مکمل دهی حاد بیکربنات سدیم بر عملکرد بی هوازی مردان دوچرخه سوار نخبه و غیر نخبه

نوع مقاله : علمی - پژوهشی

نویسندگان

¹ دانشکدة تربیتبدنی و علوم ورزشی، دانشگاه تبریز، تبریز، ایران

² دانشگاه تبریز

³ باشگاه فرهنگی ورزشی شهرداری تبریز

10.52547/joeppa.13.1.57

چکیده

هدف: بی‌کربنات سدیم، با دارابودن خاصیت تامپونی، از جمله مکمل‌های مجاز و مؤثر برای کاهش خستگی است. از این‌رو، هدف اصلی تحقیق حاضر عبارت است از بررسی تأثیر مصرف حاد مکمل بی‌کربنات سدیم بر عملکرد بی‌هوازی مردان دوچرخه‌سوار نخبه و غیرنخبه.
روش‌ها: در طرح تحقیقی متقاطع و یک‌سویه کور، 12 دوچرخه‌سوار تایم‌تریل و سرعتی نخبه (3 سال سابقة رقابت‌های ملی و بین‌المللی) و 16 دوچرخه‌سوار غیرنخبه (بدون سابقة رقابت‌های رسمی) در محدودة سنی 17- 29 سال به‌صورت هدف‌مند انتخاب شدند و در دو گروه قرار گرفتند. هر دو گروه به فاصلة یک هفته، 60 دقیقه قبل از اجرای آزمون، 100 میلی‌گرم دارونما (نمک طعام) یا 300 میلی‌گرم بی‌کربنات سدیم به‌ازای هر کیلوگرم وزن بدن به‌صورت محلول در 200 میلی‌‌لیتر آب مصرف کردند. سپس، با استفاده از آزمون بی‌هوازی وینگیت، شاخص‌های توان اوج، توان متوسط، شاخص خستگی و ضربان قلب بازیافت آزمودنی‌ها اندازه‌گیری و نتایج حاصل با استفاده از تحلیل واریانس (2×2) بررسی شد (05/0>P).
نتایج: پاسخ متغیرهای وابسته به مکمل‌دهی بی‌کربنات سدیم در دو گروه تفاوت معناداری نداشت (05/0> P)، با این حال، در هر دو گروه مصرف حاد مکمل بی‌کربنات سدیم موجب افزایش معنادار توان اوج (001/0P<) و توان متوسط (001/0=P) و کاهش مقادیر شاخص خستگی (001/0P<) و ضربان قلب بازیافت دقیقة پنجم (001/0P<) شد.
نتیجه‌گیری: با توجه به بهبود ظرفیت بی‌هوازی مردان دوچرخه‌سوار نخبه و غیرنخبه متعاقب مصرف حاد مکمل بی‌کربنات سدیم، می‌توان اثربخشی بی‌کربنات سدیم را بدون توجه به سطح آمادگی یا ظرفیت تامپونی عضلات ورزشکاران محتمل دانست.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of acute sodium bicarbonate supplementation on anaerobic performance in elite and non-elite male cyclists

نویسندگان [English]

Armin Mohammadi Gajvati ¹
Saeed Nikokheslat ²
Javad Vakili ²
Ramin Amirsasan ²

¹ Faculty of Physical Education and Sports Sciences, University of Tabriz, Tabriz, Iran

² Faculty of physical Education and Exercise Sciences, University of Tabriz, Tabriz, Iran.

چکیده [English]

Purpose: Sodium bicarbonate with buffering effect is one of the additives and effective supplement to reduce fatigue. Therefore, the main objective of the present study is to investigate the acute effect of sodium bicarbonate supplementation on anaerobic performance in elite and non-elite male cyclists.
Methods: In a single-blind crossover study 12 semi endurance elite cyclist (with 3 year national and international competitions experience) and 16 non-elite cyclists (no history of official competition) in the range of 17 – 29 years old selected purposefully and were placed in two group. Both group within one week, 60 minutes before the test, consumed 100 mg placebo (NaCl) or 300 mg sodium bicarbonate per kg of body weight of dissolved in 200 ml of water. The Wingate anaerobic test, measure participants peak power, average power, power drop and recovery heart rate indexes and the results were analyzed by using analysis variance (2 × 2) (p <0.05).
Results: dependent variables response to sodium bicarbonate supplementation had no significant difference between two groups (p >0.05), However, in both group the acute supplementation of sodium bicarbonate result in a significant increase in peak power (P<0.001) and average power (P=0.001) and result in a significant decrease in power drop (P<0.001) and fifth minute recovery heart rate (P<0.001).
Conclusion: According to improvement of anaerobic capacity of elite and non-elite male cyclists following acute supplementation of sodium bicarbonate, its effectiveness is possible regardless fitness level or muscle buffering capacity.

کلیدواژه‌ها [English]

Key words: Sodium bicarbonate
peak power
average power
power drop
elite and non
elite cyclist

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