پژوهش در طب ورزشی و فناوری

تاثیر مکمل تائورین بر انتخاب سوبسترای مصرفی در حین تمرین در زنان چاق

نویسندگان

نسیم سیوندی
روح الله نیکویی
داریوش مفلحی

دانشگاه شهید باهنر کرمان

https://doi.org/10.61186/jsmt.21.25.103
چکیده
اسیدآمینه تائورین می تواند بوسیله افزایش بیان ژنهای مربوط به تنظیم متابولیسم انرژی، استفاده از اسیدهای چرب و تحریک فرآیند لیپولیز را افزایش دهد. هدف از انجام پژوهش حاضر بررسی تاثیر مکمل تائورین برتسهیل اکسیداسیون لیپید و انتخاب سوبسترای مصرفی حین تمرین در زنان چاق بود.15 زن چاق (سن 32/6 ± 53/34 سال، شاخص توده بدن 23/3 ± 12/33 کیلوگرم/مجذور متر) یک آزمون فزاینده استاندارد را قبل و بعد از مصرف 21 روزه مکمل تائورین (mg/kg 50 ) انجام دادند. نمونه خونی قبل و بعد از آزمون و پارامترهای تنفسی در تمامی طول آزمون به طور نفس به نفس اندازه گیری شد. نقاط FATmax (به عنوان نقطه ای که چربی بیشترین سهم را در انرژی مصرفی دارد) و نقطه تقاطع سوخت کربوهیدرات و چربی[1](به عنوان نقطه ای که سوخت غالب از چربی به کربوهیدرات تغییر پیدا می کند، COP) تعیین و ضربان قلب، بارکاری و اکسیژن مصرفی معادل با این نقاط استخراج و بین کوششهای قبل از مصرف مکمل و بعد از آن بوسیله آزمون t مستقل و آزمون تحلیل واریانس با اندازه های تکراری با هم مقایسه شدند. متعاقب مصرف 21 روزه مکمل تائورین، تغییرات سطوح سرمی هورمون های استروژن و پروژسترون، حداکثر اکسیژن مصرفی و زمان رسیدن به واماندگی در حین تمرین فزاینده نسبت به قبل از مصرف مکمل بطور معنی دار مقادیر بالاتری داشت. با وجود این، مصرف این مکمل بر متغیر های ضربان قلب، بار کاری و اکسیژن مصرفی معادل با نقاط FATmax و COP بدون تاثیر بود. علیرغم افزایش فاکتورهای عملکردی در حین تمرین، مکمل تائورین بر انتخاب سوبسترای مصرفی در حین تمرین در زنان چاق بی تاثیر است.

کلیدواژه‌ها

چاقی
مکمل تائورین
هورمونهای جنسی
FATmax point
نقطه تقاطع سوخت کربوهیدرات و چربی

عنوان مقاله English

Effect of Taurine Supplement on Substrate Selection During Exercise in Obese Women

نویسندگان English

Nasim sivandi
Rohollah Nikooie
Darioush Moflehi
Shahid Bahonar University of kerman
چکیده English

Amino acid taurine can increase the utilization of fatty acids and stimulation of lipolysis through augmentation of the expression of genes related to regulation of energy metabolism. The purpose of this study was to investigate the effect of taurine supplement on lipid oxidation and substrate selection during exercise in obese women. 15 obese women (Body weight: 34.53 ± 6.33 (kg), BMI: 33.12 ± 3.23 (kg/m2)) performed a standard incremental test before and after 21 days of taurine supplementation (50 mg/kg). Blood samples were collected before and after the test and breath by breath mesurment of respiratory parameters were done throughout the test. FATmax (as the point at which fat contributes the most to the consumed energy) and Cross over point (as the point at which the predominant fuel changes from fat to carbohydrates, COP) were calculated. Heart rate, workload, and oxygen consumption corresponding to FATmax and COP were determined and compared between attempts before and after supplement consumption using independent t-test and analysis of variance with repeated measures. Following taurine consumption for 21 days, the changes in serum levels of estrogen and progesterone hormones, maximum oxygen consumption, and time to exhustion during incremental exercise test were significantly higher than before supplement consumption. Nevertjeless, the consumption of supplement had no effect on heart rate, workload and oxygen consumption corresponding to FATmax and COP points. Despite the increase in performance variables during exercise, taurine supplementation has no effect on substrate selection during exercise in obese women.

کلیدواژه‌ها English

FATmax and cross over points
Obesity
Sexual hormones
Taurine supplemen
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