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

• Published in: International journal of neuroscience 2004-05, Vol.114 (5), p.623-637
• Main Authors: ARI, ZEKI, KUTLU, NECIP, SAMI UYANIK, BEKIR, TANELI, FATMA, BUYUKYAZI, GURBUZ, TAVLI, TALAT
• Format: Article
• Language: English
• Subjects: Age Factors; Aged; Aging - physiology; Behavioral psychophysiology; Biological and medical sciences; Case-Control Studies; Exercise - physiology; Fundamental and applied biological sciences. Psychology; Growth Hormone - blood; Hormones and behavior; Humans; Insulin-Like Growth Factor I - metabolism; Linear Models; Male; Maximal Voluntary Ventilation - physiology; Mental Processes - physiology; Middle Aged; Oxygen Consumption - physiology; Physical Education and Training - methods; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Radioimmunoassay - methods; Reaction Time - physiology; Statistics, Nonparametric; Testosterone - blood
• ISSN: 0020-7454; 1563-5279; 1543-5245
• DOI: 10.1080/00207450490430499

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 differ-ences 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