The effect of 8 weeks swimming training on secretion of growth hormone in 9-11 years old boys

Sepehri Manesh Mohammad 1, 2, *, Motaghi Hamze 2 and Abasi Moghadam Mahdi 1

1 Khorramabad Technical and Vocational College, Khorramabad, Lorestan, Iran.
2 Lorestan organization of Education, Khorramabad, Lorestan, Iran.
 
Research Article
International Journal of Science and Research Archive, 2021, 02(02), 139–144.
Article DOI: 10.30574/ijsra.2021.2.2.0069
Publication history: 
Received on 13 April 2021; revised on 16 May 2021; accepted on 20 May 2021
 
Abstract: 
The influence of exercise training on anabolic hormones is especially important for growth and development in childhood years. The aim of this study was determine effect of 8 weeks of swimming training on secretion of growth hormone in 9-11 years old boys. To test the research hypothesis, the people who were willing to cooperate with the investigator randomly assigned to experimental group (n=15: age: 9.33±0.30, height: 130.46±7.53, weight: 27.04±7.39) and control group (n=15: age: 9.39±0.39, height: 133.53±7.52, weight: 27.15±4.92). Experimental group participated in 8 weeks swimming training with intensity of 45-65% HRmax for 3 times per week and 1 hour per session. During this time control group did not participate in this protocol and continue to routine activity. Fasting blood sample were collected 48 hours before and after of 8 weeks swimming training to assess serum growth hormone. 8 weeks swimming training led to significant increase on growth hormone in experimental group (P= 0.000). But increase growth hormone in control group not significant (P= 0.383). In result, 8 week of swimming training led to significant increase on secretion growth hormone in 9-11 years old boys.
 
Keywords: 
Somatotropin; Swimming training; Physical activity
 
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