Akademik Veri Yönetim Sistemi
Montenegrin Journal of Sports Science and Medicine, cilt.2, sa.2, ss.9-13, 2013 (ESCI)
Pituitary hormones play an important role energy expenditure and body temperature regulation during exercise. The aim of the
study was to investigate the effect of two different endurance training in ambient temperature (30.76 ± 1.71oC and 57.92 ± 5.80%
r.h.) on plasma growth hormone (GH) and prolactin (PRL) levels in non-trained healthy subjects. Twenty-four untrained healthy
men participated in an 8-wk progressive two different endurance-training program. Subjects were divided into two groups: an interval
running group (IR), and continuous running group (CR). Both groups were performed 3 days/wk. Growth hormone, PRL and
VO2max levels were assessed at the beginning and the end of the training period. Body temperature (TB) was also measured at the
beginning and immediately after each training. The exercise type affected plasma PRL (8.52 vs. 6.50 ng/ml IR and CT groups, P <
0.02) but did not alter plasma GH levels (0.95 vs 0.63 ng/ml IR and CT groups, P>0.38). Plasma GH level at the end of training
program increased from 0.42 to 1.48 ng/ml and 0.58 to 0.67 ng/ml for IR and CR groups. Expectedly, both training types increased
TB, at a greater rate for IR group than CR group. In conclusion, an 8-wk regular exercise result in an increase in plasma PRL level,
without altering plasma GH level, which accompanied by elevated body temperature, regardless of the individual’s sporting routine.
These suggest that untrained individuals could benefit from a regular exercise program as much as those doing the routine
sport.