نوع مقاله : مقاله پژوهشی Released under (CC BY-NC) license I Open Access I

نویسندگان

1 استاد دانشگاه گیلان،

2 دانشجوی کارشناسی ارشد فیزیولوژی ورزشی

چکیده

هدف: هدف پژوهش حاضر، مقایسه دو حجم شش و هشت هفته‌ای تمرینات موازی بر شاخص‌های آمادگی جسمانی، تغییرات کورتیزول و پروتئین واکنشی C با حساسیت بالا (CRP-hs) در فوتبالیست‌های نوجوان بود.
روش‌شناسی: بیست فوتبالیست (سن: 91/0 ± 15 سال، وزن: 07/10 ± 10/61 کیلوگرم) با حداقل 5 سال سابقه فوتبال، به‌صورت تصادفی به دو گروه 10 نفری شش و هشت هفته تقسیم شدند. دوره تمرینی شامل تمرینات عمومی (سه هفته) و اختصاصی بود و به‌صورت سه جلسه در هفته به مدت 90 دقیقه برگزار شد. نوع و شدت تمرینات برابر بوده و فقط حجم تمرینی بین گروه‌ها متفاوت بود. قبل و بعد از دوره، توان هوازی (آزمون 1609 متر)، سرعت (دوی 60 متر) و استقامت عضلانی (شنا سوئدی و دراز و نشست) در ساعت 8:45-8 عصر و نمونه‌های خون وریدی برای اندازه‌گیری کورتیزول و CRP-hs در شرایط ناشتا (8:30-8 صبح) از آزمودنی‌ها اخذ شد.
یافته‌ها: مقادیر VO2max، سرعت، دراز و نشست و شنا سوئدی هر دو گروه نسبت به مقادیر پایه بهبود معنی‌داری نشان داد. حجم تمرینی هشت هفته در خصوص کاهش غلظت کورتیزول موثرتر بود (%77/16، 033/0=P)، اما سرعت گروه شش هفته با اندازه اثر بزرگتری (11/0- =r) بهبود یافته بود (%27/5). همچنین، در مورد سایر متغیرها تفاوتی بین دو گروه مشاهده نشد.
نتیجه‌گیری: به‌نظر می‌رسد افزایش تدریجی شدت تمرینات آماده‌سازی در مدت هشت هفته نسبت به افزایش مشابهی در طول شش هفته، منجربه کاهش موثرتر مقادیر سرمی کورتیزول فوتبالیست‌های نوجوان می‌شود، اما در مورد سطوح hs-CRP و بهبود متغیرهایی نظیر VO2max، سرعت و استقامت عضلانی مزیت بیشتری ندارد.
 

کلیدواژه‌ها

عنوان مقاله [English]

Comparison the effect of two different volumes of concurrent training on some physical fitness factors, cortisol and hs-CRP serum level changes in adolescent soccer players

نویسندگان [English]

  • A Damirchi 1
  • F Dadashzade 2

1 Professor, University of Guilan

2 MSc student in exercise physiology

چکیده [English]

Aim: The purpose of present study was to compare the effect of two volumes six- and eight-week of concurrent training on physical fitness factors, cortisol, and high-sensitivity C-reactive protein (hs-CRP) level changes in adolescent soccer players.
Method: Twenty players (age: 15 ± 0.91 years; weight: 61.10 ± 10.07 kg; soccer experience: at least 5 years) randomly divided into 6-week or 8-week group (n=10). The training protocol had two phases including general (three weeks) and specific in three days a week for 90 min. The type and intensity were same for both groups and only the volume was different between them. Aerobic power (1609 m), speed (60 m), muscular endurance (push up and sit up), and fasted venous blood samples (cortisol and hs-CRP) were collected before and after training period at 8-8:45 P.M and 8-8:30 A.M, respectively.
Results: The values of VO2max, speed, push up, and sit up were improved compared to pre-training values in both groups. Eight-week volume was more effective regarding the reduction of cortisol (%16.77; P=0.033), but the speed of six-week group was improved (%5.27) with a large effect size (r = -0.11). With respect to other variables, there was no significant difference between the two groups.
Conclusion: Gradual increase in intensity of conditioning training within eight weeks compared to the same increase within six weeks lead to more effective reduction in serum cortisol of adolescent soccer players, but in relation to hs-CRP levels and improve in VO2max, speed and muscular endurance, it has no more advantage.
 

کلیدواژه‌ها [English]

  • Keywords: Training volume
  • Soccer
  • VO2max
  • Muscular endurance
  • Speed
1. Alizade MH, Rahimi A, Haghverdi R. The effect of a six-week concurrent and circuit training on aerobic and anaerobic power in male adolescent soccer players. Sports science (The journal of islamic azad university Karaj branch). 2010;2(3):47-62.
2. Gorzi A, Agha AH, Rajabi H, Azad A, Molanouri SM, Hedayati M. Effect of concurrent, strength and endurance training on hormones, lipids and inflammatory characteristics of untrained men. Iranian Journal of Endocrinology and Metabolism. 2012;13(6):614-20.
3. Wong P-l, Chaouachi A, Chamari K, Dellal A, Wisloff U. Effect of preseason concurrent muscular strength and high-intensity interval training in professional soccer players. The Journal of Strength & Conditioning Research. 2010;24(3):653-60.
4. Enright K, Morton J, Iga J, Drust B. The effect of concurrent training organisation in youth elite soccer players. European journal of applied physiology. 2015;115(11):2367-81.
5. Ghahramanlou E, Aghaalinejad H, Gharakhanlou R. Comparision the effect of resistance, endurance and concurrent (resistance and endurance) on bioenergetic charactristics, maximal strength and body composition in untrained men. Olympic Journal. 2008;15(4):45-57.
6. Gil S, Ruiz F, Irazusta A, Gil J, Irazusta J. Selection of young soccer players in terms of anthropometric and physiological factors. Journal of Sports Medicine and Physical Fitness. 2007;47(1):25.
7. Astrand P, Rodahl K, Dahl H. Eds., Textbook of work physiology: Physiological bases of exercise. Human Kinetics. 2003;4:350.
8. Ding Y, Guo X, Lu H, Zeng F. Effect of different training stress on leptin, cortisol and testosterone in elite female rowers. Journal of Exercise Science and Fitness. 2004;2(2):99-104.
9. Bayani H. The Acute effect of aerobic and anaerobic exercise on serum levels of BDNF and cortisol in active men. Journal of Sport and Biomotor Sciences. 2014;6(11):49-57.
10. Mendall M, Patel P, Ballam L, Strachan D, Northfield T. C reactive protein and its relation to cardiovascular risk factors: a population based cross sectional study. Bmj. 1996;312(7038):1061-5.
11. Nazem F, Heidarianpour A, Kozehchian M. Effects of prolonged swimming and football training programs on C-reactive protein (CRP), homocysteine and fibrinogen concentrations in the serum of young boys. Physiology and Pharmacology. 2010;14(2):191-8.
12. Atashak S. The effect of the eight-week progressive concurrent training on inflammatory index of cardiovascular disease predictor, and body composition in sedentary middle-age men. Iranian Journal of Cardiovascular Nursing. 2013;2(3):16-25.
13. Gubler CM. Examining the Relationship of Physical Activity with Inflammation and Cardiovascular Disease Risk. 2007.
14. Cureton KJ, Sloniger MA, O’Bannon JP, Black DM, McCormack WP. A generalized equation for prediction of VO2peak from 1-mile run/walk performance. Med Sci Sports Exerc. 1995;27(3):445-51.
15. Fazelifar S, Ebrahim K, Sarkisian V. Effect of concurrent training and detraining on anti-inflammatory biomarker and physical fitness levels in obese children. Revista Brasileira de Medicina do Esporte. 2013;19(5):349-54.
16. Rafie M, Shavandi N, Saremi A, Abdolmaleki A. Comparison the effects of 6 weeks of resistance training and concurrent training on aerobic power and resting levels of growth hormone and cortisol in healthy children. Arak medical university journal. 2014;17(4):38-46.
17. Cadore E, Pinto R, Lhullier F, Correa C, Alberton C, Pinto S, et al. Physiological effects of concurrent training in elderly men. International journal of sports medicine. 2010;31(10):689-97.
18. Arazi H, Damirchi A, Asadi A. Age-related hormonal adaptations, muscle circumference and strength development with 8weeks moderate intensity resistance training. Annales d'endocrinologie; 2013: Elsevier.
19. Asarzade M, Abedi B. The effects of concurrent  training on insulin resistance and inflammatory markers in sedentary men. Ofogh-e Danesh. 2012;18(3):96-101.
20. Libardi CA, De Souza GV, Cavaglieri CR, Madruga VA, Chacon-Mikahil M. Effect of resistance, endurance, and concurrent training on TNF-a, IL-6, and CRP. Med Sci Sports Exerc. 2012;44(5):50-6.
21. Colato A, Abreu F, Medeiros N, Lemos L, Dorneles G, Ramis T, et al. Effects of concurrent training on inflammatory markers and expression of CD4, CD8, and HLA-DR in overweight and obese adults. Journal of Exercise Science & Fitness. 2014;12(2):55-61
.