تتغییرات آستانه بی هوازی در فازهای مختلف چرخه قاعدگی: تاثیر انتخاب سوبسترای مصرفی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس ارشد، گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه شهید باهنر کرمان،کرمان

2 دانشیارگروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه شهید باهنر کرمان، کرمان

3 استادیار، گروه فیزیولوژی ورزشی، دانشکده تربیت بدنی و علوم ورزشی، دانشگاه شهید باهنر کرمان، کرمان

چکیده

سابقه و هدف: نوسانات هورمونی چرخه قاعدگی معمولا با تغییر در عملکرد ورزشی همراه است. هدف از تحقیق حاضر، مطالعه تأثیر مراحل مختلف چرخه  قاعدگی بر عملکرد هوازی، انتخاب سوبسترای مصرفی و  شاخصهای فیزیولوژیکی معادل با آستانه بی هوازی در زنان فعال شهر کرمان بود.
مواد و روشها: دوازده زن فعال با چرخه قاعدگی منظم در تحقیق شرکت کردند. آزمودنی ها دو آزمون  فزآینده استاندارد را در اواسط مرحله لوتئال و فولیکولار خود تا سرحد واماندگی انجام دادند. درخلال آزمون گازهای تنفسی بطور نفس به نفس جمع آوری شد. آستانه بی هوازی ( افزایش ناگهانی در معادله تهویه ای اکسیژن(VE/VO2))،  نقاط Fatmax و cross over (با استفاده از مقادیر RER) تعیین و ضربان قلب و اکسیژن مصرفی معادل با آنها استخراج و این متغیر ها بین مراحل مختلف قاعدگی بوسیله آزمون t  زوجی باهم مقایسه شدند.
یافته ها: سطوح استرادیول و پروژسترون در مرحله لوتئال بطور معنی دار از مرحله فولیکولار بالاتر بود (05/0>P). اکسیژن مصرفی (میلی لیتر در کیلو گرم وزن بدن در دقیقه) معادل با آستانه بی هوازی (فولیکولار 3/3±8/30 ، لوتئال 1/2±6/34)، نقطه Fatmax (فولیکولار 6/1±2/16 لوتئال 7/1±1/19) و نقطه )  Cross overفولیکولار 3/3±18و لوتئال5/4±8/21) بود و بین دو مرحله تفاوت معنادار داشت (همه (05/0>P)). وقوع زمانی  Cross over در مرحله فولیکولار و لوتئال به ترتیب در ثانیه 72±200 و 67±230 بود و تفاوت بین دو مرحله معنی دار بود (05/0>P). 
نتیجه گیری: بطور کلی، تحقیق حاضر نشان داد که مقادیر متفاوت هورمون های جنسی ممکن است سبب بهبود آستانه بی هوازی گردیده که به نظر می رسد این کار را از طریق تغییر سوبسترای مصرفی به سمت چربی در شدت های زیر آستانه بی هوازی انجام می دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Anaerobic Threshold Variations during Different Phases of Menstrual Cycle: Effect of Substrate Selection

نویسندگان [English]

  • Farnia Rezaiyan Attar 1
  • Rohollah Nikooie 2
  • Darioush Moflehi 3
1 Department of Exercise Physiology, Faculty of Physical Education and Sport Science, Shahid Bahonar University of Kerman, Kerman, Iran
2 Department of exercise physiology, Faculty of physical education and sport science, Shahid Bahonar University of kerman, Kerman, Iran
3 Department of exercise physiology, Faculty of physical education and sport science, Shahid Bahonar University of kerman, Kerman, Iran
چکیده [English]

Background and Purpose: Hormonal variations throughout the menstrual cycle is usually associated with change in exercise performance. The purpose of the current study was to investigate the effect of menstrual cycle phases on aerobic performance, substrate selection, and physiological variables corresponding to anaerobic threshold (AT) in active women of Kerman city. 
Methodology: Twelve active females owning regular menstrual cycle participated in the study. The subjects performed two standard incremental tests at their own middle of follicular or luteal phase until exhaustion. Breath-by-breath respiratory gases were measured throughout the test. AT (abrupt increase in oxygen equivalent (VE/VO2)), cross over point (COP) and Fatmax (using respiratory exchange ratio (RER)) were determined, then heart rate and oxygen consumption corresponding to them were extracted and compared between menstrual cycle phases using paired sample T-Test.
Results: Estradiol and progesterone levels during luteal phase was significantly higher than those from follicular phases (P < 0.05). The values of oxygen (ml.kg.min) corresponding to AT (follicular: 30.8±3.3, luteal: 34.6±2.1), Fatmax (follicular: 16.2±1.6, luteal: 19.1±1.7), and COP ((follicular: 18±3.3, luteal: 21.8±4.5) were significantly different between the phases (All P < 0.05). COP was occurred during follicular and luteal at 200±72 and 230±67, respectively, and the difference between phases was significant (P < 0.05).
Conclusion: In sum, the results of the present study showed that different values of sexual hormones probably result in improvement in AT and seemingly do this due to change in substrate selection toward fat oxidation at intensities below the AT. 

کلیدواژه‌ها [English]

  • Aerobic performance
  • Anaerobic threshold
  • Menstrual cycle
  • Substrate selection
##Shannon MK, Martin MM. Menstrual cycle: Basic Biology. Annals of the New York Academy of Sciences. 2008; 1135:10-18.##Mihm M, Gangooly S, Muttukrishna S. The normal menstrual cycle in women. Animal Reproduction Science. 2011; 124(3-4):229-36.##Tejinder KB, Avnish K. Effect of different phases of menstrual cycle heart rate variability. Journal of clinical Diagnostic Research. 2015; 9(10):1-4.##Moran VH, Leathard H. Cardiovascular functioning during the menstrual cycle. Clinical physiology. 2000; 20 (6):496-504.##Anitha M. Evaluation of cardio respiratory changes during various phases of menstrual cycle in young women before and soon after exercise. International Journal of Medical science and public Health. 2016; 5(6):1260-67.##Nagashima K. Thermoregulation and menstrual cycle. Temprature (Austin). 2015; 2(3):320-321.##Ross J, Anne H, Hugh HKF, Tim M. The effect of menstrual cycle phases on physical performance in female soccer player. PLoS One. 2017; 12(3):e173951.##Janse DE, Jonge XA. Effect of the menstrual cycle an exercise performance. Sports medicine. 2003; 63 (2):341-349.##Bradley PS, Bendihsen M, Dellal A, Mohr M, Wilkie A, Datson N et al. The application of yo-yo intermittent endurance level 2 test to elite female soccer populations. Scandinavian Journal of Medicine & Science in Sports. 2014; 24(1):43-54.##Hideki H, Toshimichi I, Harumi H. Menstrual cycle phase and carbohydrate ingestion alter immune response following endurance exercise high intensity time trail performance test under hot conditions. Journal of the international society of sport nutrition. 2014; 6:11-39.##Ashley CD, Bishop P, Smith JF, Reneau P, Perkins C. Menstrual Phase Effects on Fat and Carbohydrate Oxidation During Prolonged Exercise in Active Females. Journal of Exercise Physiology Online. 2000; 3(4):67-73.##Bisdee JT, James WPT, Shaw MA. Changes in energy expenditure during the menstrual cycle. The British Journal of Nutrition. 2007; 61(2):187–199.##Oosthuyse T, Bosch AN. The effect of menstrual cycle on exercise metabolism: implications for exercise performance in eumenorrhoeic women. Sports Medicine. 2010; 40(3):207-27.##Isacco L, Duche P,Boisseau N. Influence of hormonal status on substrate utilization at rest and during exercise in the female population. Sports Medicine. 2012; 42(4):327-42.##Janse de Jonge XA. The effect of the menstrual cycle on exercise metabolism.  Sports Medicine. 2003; 33(11):833-51.##Abdollahpor A, Khosravi N, Ramezani Z. Effects of the menstrual cycle phase on the blood lactate responses and exercise performance in active women. Pelagia Research. 2013; 3(2):206-210.##Oosthuyse T, Bosch AN. The Effect of the Menstrual Cycle on Exercise Metabolism. Sports Medicine. 40(3): 207-27.##Brain T, Zhu l, John MS. Estrogens in the regulation of liver lipid metabolism. Advance Experimental Medical Biology. 2017; 1043:227-256.##Mihim M, Gangooly S, Muttukrishna S. The normal menstrual cycle in women. Animal Reproduction Science .2011; 124(3-4): 229-236.##Nikooie R, Gharakhanlu R, Rajabai H, Ghafari A. Noninvasive determination of anaerobic threshold by monitoring the %spo2 changes and respiratory gas exchange. The journal of strength and conditioning. 2009; 23(7):2107-2113.##Jesus G,Ricardo MN, Juan FO. Validity and reliability of ventilatory and blood lactate thresholds in well-trained cyclists.PLOS. 2016; 11(9):1-16.##Gamada N, Marzouki H, Haboubi M, Tabaca Z, Shepard RJ, Bouhlel E. Crossover and maximal fat oxidation points in sedentary health subjects. Diabetes Metabolism. 2012; 38(1):40-45.##Croci I, Borrani F, Byrne NM, Wood RE, Hickman IJ, Chenevière X, Malatesta D. Reproducibility of fatmax and fat oxidation rates during exercise in recreationally trained males. PLoS One. 2014; 9(6):e97930.##Sipavičienė S, Daniusevičiutė L, Klizienė I, Kamandulis S, Skurvydas A. Effects of estrogen fluctuation during the menstrual cycle on response to stretch-shortening exercise in females. Biomedical research. 2013; 243572.##Kumari V, Konstantinou J, Papadopoulos A, Aasen I, Poon P, Halari R  et al. Evidence for a role of progesterone in menstrual cycle related variability in prepilse inhibition in healthily young women. Neuropsychopharmacology. 2010; 35 (4):929-937.##Brutsaert TD, Spielvogel H, Caceres E, Araoz M, Chatterton RT, Vitzthum VJ. Effect of menstrual cycle phase on exercise performance of high-altitude native women at 3600 m. Journal of Expremental Biology.  205(Pt 2):233-9.##ReillyT, Turner P. The menstrual cycle and human performance. Biological Rhythm. 2000; 31(4):29-40.##Sadan Y, Mehmet Y. The effect of menstrual cycle phase on exercise capacity measured by treadmill exercise test. Turkish Jurnal of Sport and Exercise. 2015; 17 (1):12-15.##Constantini NW, Dubnov Gal, Lebrun CM. The menstrual cycle and sport performance. Clinics in Sport Medicine. 2005; 24(2):51-85.##Venables MC,  Achten J, Jeukendrup AE. Determinants of fat oxidation during exercise in healthy men and women: a cross-sectional study. Journal of Applied Physiology. 2005; 98(1):160-167.##