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.
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.
Ari
Zeki
Z
Celal Bayar University, Faculty of Medicine, Department of Biochemistry, Manisa, Turkey. zekiari@yahoo.com
Kutlu
Necip
N
Uyanik
Bekir Sami
BS
Taneli
Fatma
F
Buyukyazi
Gurbuz
G
Tavli
Talat
T
D000367:Age Factors; D000368:Aged; D000375:Aging / Q000502:physiology*; D016022:Case-Control Studies; D015444:Exercise / Q000502:physiology*; D013006:Growth Hormone / Q000097:blood*; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000378:metabolism*; D016014:Linear Models; D008297:Male; D008451:Maximal Voluntary Ventilation / Q000502:physiology; D008606:Mental Processes / Q000502:physiology*; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology; D010806:Physical Education and Training / Q000379:methods; D011863:Radioimmunoassay / Q000379:methods; D011930:Reaction Time / Q000502:physiology*; D018709:Statistics, Nonparametric; D013739:Testosterone / Q000097:blood*
D013739:Testosterone; D007334:Insulin-Like Growth Factor I; D013006:Growth Hormone