تأثیر یک دورۀ کوتاه‌مدت مکمل‌دهی ویتامین D بر عملکرد ریوی و عوامل آمادگی جسمانی کشتی‌گیران نوجوان

نوع مقاله : علمی - پژوهشی

نویسندگان

گروه تربیت بدنی، دانشکدۀ ادبیات و علوم انسانی، دانشگاه کردستان، سنندج، ایران

چکیده

هدف: هدف تحقیق حاضر بررسی تأثیر یک دورۀ کوتاه‌مدت مکمل‌دهی ویتامین D بر عملکرد ریوی و عوامل آمادگی جسمانی کشتی‌گیران نوجوان بود.
روش‌ها: 36 کشتی‌گیر نوجوان داوطلب (سن 8/0 ±18/16 سال، قد 7/5±5/171 سانتی‌متر، وزن 36/6±2/64 کیلوگرم، شاخص تودۀ بدنی 75/1±6/21 (کیلوگرم بر متر مربع)، تودۀ چربی 82/1±9/8 درصد) به‌صورت تصادفی در دو گروه تجربی (ویتامین  D) و کنترل (دارونما) قرار گرفتند. آزمودنی‌های گروه تجربی روزانه 2000 واحد ویتامین D و گروه کنترل همین مقدار دارونما را به مدت 14 روز دریافت کردند و در طول این مدت همزمان تمرینات کشتی (5 جلسه در هفته) را نیز انجام می‌دادند. به‌منظور بررسی متغیرهای تحقیق، سطح سرمی 25-هیدروکسی ویتامین D، حجم‌های ریوی با استفاده از آزمون اسپیرومتری و عوامل آمادگی جسمانی در دو نوبت قبل و بعد از مکمل‌دهی اندازه‌گیری شد. داده‌های آماری با روش تحلیل کوواریانس تجزیه‌وتحلیل شد.
نتایج: نتایج نشان داد که سطح ویتامین D (23 درصد) و شاخص‌های FVC (20 درصد)، FEV1(17 درصد)، MVV (12 درصد) ،FEV1/FVC (11 درصد)، FEF25/75(13 درصد) پس از دورۀ مکمل‌دهی در گروه تجربی نسبت به گروه دارونما به‌طور معنا‌داری بیشتر بود (05/0 >P). اما بین شاخص‌های PEF، FEF25، FEF75، FEF50 و عوامل آمادگی جسمانی (آزمون شاتل ران، 50 متر سرعت، پرش سارجنت، شنا سوئدی، بارفیکس و دراز و نشست) گروه ویتامین D و دارونما تفاوت معنا‌داری مشاهده نشد (05/0< P).
نتیجه‌گیری: یافته‌های تحقیق حاضر نشان می‌دهد مکمل‌دهی ویتامین D احتمالاً از طریق تأثیر بر قدرت عضلات تنفسی و کاهش مقاومت راه‌های هوایی موجب بهبود شاخص‌های حجم‌های ریوی در کشتی‌گیران نوجوان می‌شود، اما تأثیری بر عوامل آمادگی جسمانی ندارد.

کلیدواژه‌ها


عنوان مقاله [English]

The effects of short-term vitamin D supplementation on the pulmonary function and physical fitness factors in adolescent wrestlers

نویسندگان [English]

  • hersh nouri
  • dariush shaikholeslami vatani
  • Naser Rostamzadeh
Department of Physical Education and Sport Sciences, University of Kurdistan, Sanandaj,Iran
چکیده [English]

Purpose: The aim of the present study was to investigate the effects of short-term vitamin D supplementation on the pulmonary function and physical fitness factors in adolescent wrestlers. Methods: 36 wrestlers (age: 16.18 ± 0.81 years, height: 171.5 ± 5.7 cm, weight64.2±.36 kg, BMI: 21.6 ± 1.75kg/m2, Ft mass: 8.9±1.82%) participated in this study. The subjects in the experimental group received 2000 IU of vitamin D daily and the control group received the same amount of placebo for 14 days, during which time they also performed wrestling training (5 sessions per week). To investigate the research variables, serum 25(OH)D levels, pulmonary function by spirometry test and physical fitness indices were measured twice, before and after supplementation periods. The data were analyzed using the analysis of covariance.
Results: Results showed that vitamin D levels (23%) and FVC indices (20%), FEV1 (17%), MVV (12%), FEV1 / FVC (11%), FEF25 / 75 (13%) were higher significantly in vitamin D compare with placebo group (P>0.05). But there was no significant difference between PEF, FEF25, FEF75, FEF50 and physical fitness factors (shuttle run, 50m sprint, sit-ups, pull-ups, push-ups and Sargent jump) in the experimental group compared to the placebo group (P>0.05). Conclusion: The present findings of this study indicated that short-term vitamin D supplementation may improve pulmonary function in adolescent wrestlers by affecting respiratory muscle strength and decreasing airway resistance but did not affect their physical fitness.

کلیدواژه‌ها [English]

  • Keywords: Spirometry
  • Wrestling training
  • Respiratory muscle
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  • تاریخ دریافت: 06 شهریور 1397
  • تاریخ بازنگری: 09 مهر 1398
  • تاریخ پذیرش: 20 مهر 1398
  • تاریخ اولین انتشار: 01 اسفند 1399
  • تاریخ انتشار: 01 اسفند 1399