Comparing the Effect of a One-Session Average-Intensity Resistance Training on the Growth Hormone Secretion in Active and Inactive Women

Document Type : Original Article

Authors

1 Lecturer of Physical Education.Department of Physical Education and Sport Sciences, Payame Noor University,19395-4697 Tehran, I.R.of Iran.

2 M.Sc. of Physical Education.Department of Physical Education and Sport Sciences, Payame Noor University.

3 Lecturer of Physical Education.Department of Physical Education and Sport Sciences, Azad University Khorasghan Iran.

4 Professor of Physical Education.Department of Physical Education and Sport Sciences, University Tehran, Iran.

5 M.Sc. of Physical Education.Department of Physical Education and Sport Sciences, University Esfahan, Iran.

Abstract

Background and Objective: Growth hormone not only effects the stimulation, division and growth of cells throughout the body during growth period but also leads to a decrease in the use of the carbohydrates and transfer of Lipids as sources of energy. The aim of this study was to compare the effect of a one-session average-intensity resistance training on the growth hormone secretion in active and inactive women
 Subjects and Methods: The demographic questionnaire completed by 100 female students, twenty, were randomly divided in two active and inactive groups. First, one repetition maximum participants  in  one-session resistance training were determined and then all participants engaged in protocol training with intensities of 50,60 and 70 % 1RMP. Blood samples were taken immediately before and after the training. Statistical measures of Pair t-test and Independent t- test and Analysis of Co- variance (ANCOVA) were used for data analysis.
 Results: resistance training decreases the secretion of growth hormone after training in active women while it increased the secretion of growth hormone after training in inactive women. However, this difference in growth hormone levels in both groups was not significant before and after training. (P<0/05).
Conclusion:one-session average- intensity resistance training had no significant effect on either increasing or decreasing growth hormone. Therefore, to take advantage of the benefits of growth hormone, active and inactive persons should know that resistance training with moderate- intensity is not desirable for optimal secretion of growth hormone.

Keywords


1-Karbassian  A. Biochemistry (exercise,health and weghit loss). 2th ed . Esfahan: Jahad daneghahi publications; 2000.
2-Wilmor J, Castile DL. Physiology of sport and physical activity. Trans Moeni Z, Rahmani-Nia F, Rajabi H, Agha Ali-Nejad H, Salami F. Tehran: Mobtakeran publications; 2009.
3-Sandgel H. Human physiology. 2th ed. Yazd: Yazd publication; 1992.
4-Mac-Ardal  WD, Katch F, Katch V. Exercise physiology (1) (Energy , Nutrition and Human Perfformance). Trans Khaled A. Tehran: Samt publications; 2006.
5-Satin JA, Galbo H. Hormones and physical activity. Trans Gaeini AA. Tehran: Department of Physical Education and Ministry of Education Alumni Association and physical education Expert and sport;1995.
6-Marandi SM. Reactions IGFBP, GH and testosterone to an intense exercise session and after adaptation to resistance training and endurance [dissertation]. Tehran: Tarbiat Modares University; 2004.
7-Eskandari Z. Growth hormone responses to maximal exercise in a session on healthy young adults [dissertation]. Tehran: Al-Zahra University; 2007.
8-Rvasi AA. Effect of aerobic and anaerobic exercise on the levels of testosterone and growth hormones, and body strength in the elderly [dissertation]. Tehran: Tehran University; 1995.
9-Linnamo V, Pakarinen A, Komi PV, Kraemer WJ, Hakkinen K. Acute hormonal responses to submaximal and maximal heavy resistance and explosive exercises in men and women. J Strength Cond Res 2005;19: 566-71.
10-Smilios I, Pilianidis Y, Karamouzis M, Parlavantzas A, Tokmakidis SP. Hormonal response after a strength endurance resistance exercise protocol in young and elderly males. Int J  Sports Med 2007;28:401-6.
11-Raastad T, Bjoro T, Hallen J. Hormonal responses to high-and moderate-intensity strength exercise. Eur J Appl Physiol 2000;82:121-8.
12-Sauro LM, Kanaley JA. The effect of exercise duration and mode on the growth hormone responses in young women on oral contraceptives. Eur J Appl Physiol 2003;90:69-75.
13-Chang FE, Dodds WG, Sallivan M, Kim MH, Malarkey WB. The acute effects of exercise on prolactin and growth hormone secretion: comparison between sedentary women and women runners with normal and abnormal menstrual cycles. J Clin Endocrinol Metab 1986;62:551-6.
14-Gaeni AA. Two sub-maximal exercise and maximal effect on growth hormone response to the students (young) athletes and non athletes [dissertation). Tehran: Tarbiat Modarres University;1996.
15-Hadzovic A, Nakas-Icindic E, Kucukalic-Selimovic E, Avdagic N, Zaciragic A. The level of physical activity and the growth hormone (GH) response to acute physical exercise. Bosn J Basic Med Sci 2004;4:47-9.
16-Chromiak JA, Antonio J. Use of amino acids as growth hormone-releasing agents by athletes. Nutrition 2002;18: 657-61.
17-Sonksen PH. Insulin, growth hormone and sport. J Endocrinol 2001;170:13-25.
18-Sutton JR. Effect of acute hypoxia on the hormonal response to exercise. J Appl Physiol 1997;42:587-92.
19-Sarmad Z, Bazargan A, Hejazi E. Research Methods in Behavioral Sciences.Tehran: Agah; 2007.
20-Goto K, Ishii N, Takamatsa K. Growth hormone response to training regimen with combined highand low- intensity exercise. Int J Sport Health Sci 2004;2:111-8.
21-Clark R, Carlsson LM, Robinson IC. Growth hormone secretary profiles in consciouse female rats. J Endocrinol 1987;114:399-407.
22-Hakkinen K, Pakarinen A. Acute hormonal responses to two different fatiguing heavy-resistance protocols in male athletes. J Appl physiol 1993;74:882-7.
23-Seo DI, Jun TW, Park KS, Chang H, So WY, Song W. 12 weeks of combined exercise is better than aerobic exercise for increasing growth hormone in middle-aged women. Int J Sport Nutr Exerc Metab 2010;20:21-6.
24-Madarame H, Sasaki K, Ishii N. Endocrine responses to upper-and lower-limb resistance exercises with blood flow restriction. Acta Physiol Hung 2010;97:192-200.
25-Berg U, Bang P. Exercise and circulating insulin-link growth factor I. Horm Res 2004;62:50-8.