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
No Thumbnail Available
Date
2004
Journal Title
Journal ISSN
Volume Title
Publisher
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-1) 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 VO 2max, T, and GH in elderly males; elevated serum T and GH levels may be advantageous for brain functions.
Description
Keywords
Age Factors , Aged , Aging , Case-Control Studies , Exercise , Growth Hormone , Humans , Insulin-Like Growth Factor I , Linear Models , Male , Maximal Voluntary Ventilation , Mental Processes , Middle Aged , Oxygen Consumption , Physical Education and Training , Radioimmunoassay , Reaction Time , Statistics, Nonparametric , Testosterone , growth hormone , somatomedin C , testosterone , adult , aerobic metabolism , aged , article , athlete , controlled study , exercise , growth hormone blood level , human , human experiment , male , mental task , normal human , oxygen consumption , physical activity , protein blood level , reaction time , senescence , testosterone blood level , training