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Comparative Study
. 2004 May;114(5):623-37.
doi: 10.1080/00207450490430499.

Serum Testosterone, Growth Hormone, and Insulin-Like Growth factor-1 Levels, Mental Reaction Time, and Maximal Aerobic Exercise in Sedentary and Long-Term Physically Trained Elderly Males

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Comparative Study

Serum Testosterone, Growth Hormone, and Insulin-Like Growth factor-1 Levels, Mental Reaction Time, and Maximal Aerobic Exercise in Sedentary and Long-Term Physically Trained Elderly Males

Zeki Ari et al. Int J Neurosci. .

Abstract

The aim of the study was to investigate the effect of regular exercise on maximum oxygen uptake capacity (VO2max), reaction time (RT), testosterone (T), growth hormone (GH), insulin-like growth factor-I (IGF-I) in athletes compared to sedentary controls. VO2max, RT, T, GH, and IGF-I levels were 31.2 +/- 6.2 ml/min/kg, 106.7 +/- 23.2 s, 8.3 +/- 1.3 ng/mL, 1.6 +/- 0.7 ng/mL, 106.5 +/- 27.0 ng/mL in master athlete group and 18.8 +/- 5.1 ml/min/kg, 148.3 +/- 39.3 s, 5.4 +/- 1.7 ng/mL, 0.8 +/- 0.3 ng/mL, 90.2 +/- 23.8 ng/mL in sedentary control group, respectively. The differences between regularly exercising males and the control group of sedentary males were found to be statistically significant. The results showed that long-term exercise decreased RT and increased VO2max, T, and GH in elderly males; elevated serum T and GH levels may be advantageous for brain functions.

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