تأثیر مصرف شش هفته ‌آب هندوانه بر شاخص نیتریک اکساید خون در تکواندوکاران زن نخبه

نویسندگان
پروین آقابیگی امین 1
محمد عزیزی 1
وریا طهماسبی 1
پرویز بشیری 2
1 گروه فیزیولوژی ورزشی، دانشکده علوم ورزشی، دانشگاه رازی، کرمانشاه، ایران
2 گروه صنایع غذایی و علوم دامی، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران
چکیده
مقدمه

ارتقا عملکرد جسمانی و تأخیر در خستگی با استفاده از مکمل­های تغذیه­ای همواره مورد توجه ورزشکاران بوده است. هدف این پژوهش، بررسی تأثیر مصرف 6 هفته آب هندوانه بر شاخص نیتریک اکساید خون و عملکرد ورزشی تکواندوکاران زن نخبه بود.

مواد و روش­ها

25 تکواندوکار زن نخبه با میانگین سنی (26/2±84/21 سال)، شاخص توده بدن (37/1±87/20 کیلوگرم بر مترمربع)، حداکثر اکسیژن مصرفی (97/1±86/38 میلی‌لیتر در دقیقه برکیلوگرم وزن بدن) و سابقه تمرینی بیشتر از 5 سال به‌صورت داوطلبانه و تصادفی یک­سو کور در دو گروه مکمل آب هندوانه (15 نفر) و دارونما (10 نفر) قرار گرفتند. آزمودنی­ها به مدت 6 هفته و سه روز در هفته مقدار 500 میلی‌لیتر نوشیدنی آب هندوانه یا دارونما را 45 دقیقه قبل از شروع تمرینات تکواندو مصرف کردند. نمونه­های خونی در دو مرحله قبل و پس از 6 هفته مکمل­یاری از ورید بازویی آنتی کوبیتال آزمودنی­ها گرفته شد. داده­ها با استفاده از آزمون تی­مستقل و وابسته با سطح معناداری 05/0P≤ بررسی شدند.

یافته­ها

نتایج حاصل از این پژوهش نشان داد سطوح نیتریک اکساید پلاسما (016/0P=) و حداکثر اکسیژن مصرفی (001/0P=) در گروه مکمل­دهی آب ­هندوانه نسبت به دارونما افزایش معناداری داشت. از طرف دیگر درد عضلانی 24 و 48 ساعت پس از تمرینات تکواندو در پس­آزمون گروه مکمل­دهی آب هندوانه نسبت دارونما، کاهش معناداری داشت (05/0P≤.).

نتیجه­گیری

با توجه به نتایج به‌دست‌آمده مصرف آب هندوانه منجر به ریکاوری سریع‌تر و کاهش درد عضلانی 24 و 48 ساعت پس از تمرینات تکواندو در تکواندوکاران زن نخبه شد.
کلیدواژه‌ها
نیتریک اکساید
آب هندوانه
درد عضلانی
تکواندوکاران نخبه

عنوان مقاله English

The Effects of Six Weeks Ingestion of Watermelon Juice on Nitric Oxide in Elite Female Taekwondo

نویسندگان English

parvin Aghabeigi amin 1
mohammad azizi 1
worya tahmasebi 1
parviz bashiri 2
1 Department of Exercise Physiology, Faculty of Sport Sciences, Razi University, Kermanshah, Iran
2 Department of Food Industry and Animal Sciences, Faculty of Agriculture, Razi University, Kermanshah, Iran
چکیده English

IIntroduction

Improving physical performance and delaying fatigue by using nutritional supplements always has been interesting in athletes. The aim of this study was to evaluate the effect of six weeks’ watermelon juice on nitric oxide and exercise performance in elite female taekwondo.

Materials and Methods

Twenty-five elite female taekwondo players (age 21.84±2.26 yrs; BMI 20.87±1.37 Kg/m2; VO2max 38.86±1.97 ml/min/kg) who had a training experience of more than five years were randomly and voluntary divided into two groups of watermelon juice supplement (n=15) and placebo (n=10). Subjects received 500 ml of watermelon juice or placebo 45 minutes before the taekwondo training sessions for six weeks. Blood samples were taken in the brachial vein in two steps; before and after 6 weeks of supplementation. Data were analyzed using dependent and independent t-test (p≤0.05).

Results

The results of this study showed levels of nitric oxide (P=0.016) and VO2max (P=0/001) significantly greater compared to the placebo group. Also, there was a significant decrease in muscle soreness 24 and 48 hours after exercise in the supplement group compared to the placebo group (p≤0.05).

Conclusion

According to the results, watermelon juice will help faster recovery and reduce muscle soreness after 24 and 48 hours follow exercise.

کلیدواژه‌ها English

Nitric Oxide
Watermelon juice
Muscle Soreness
Female Taekwondo
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