ARTICLE –
abstractThe
effect of vitamin A and E supplements on the plasma melatonin levels of
smoking sportspeople Demirici Nevzat Kafkas University Faculty of Education Department of Special Education, Kars, Turkey
Abstract
The aim of
this study is to determine the effect of smoking on the melatonin
levels in sportspeople and the regulatory role of vitamin A and E
supplements on this effect. 14 voluntary people who do sports actively
participated in the study. Methods, sportspeople were
separated into two groups: sportspeople who had been smoking at least
10 cigarettes a day for the last year and non-smoking sportspeople. Two
groups were given a two-hour exercise program which would be
implemented three times a week for two weeks. An hour before the
exercises, 200 mg of oral vitamin A and E supplements were given.
Melatonin level measurements were done before, right after and two
hours after the exercises, and measurements of serum vitamin A and E
levels were done at the beginning and end of the exercise program.
Inter-group variables and independent variables were compared via t
test, and intra-group variables were compared via paired t test.
Results.The melatonin and vitamin A and E levels of the smoking
sportspeople prior to the exercises were found to be less than
non-smoking sportspeople; however, no statistically significant
difference was observed between these levels (p>0.05). Nevertheless,
melatonin levels which increased right after the exercises were found
to decrease to the pre-exercise levels two hours later. Moreover,
post-exercise melatonin levels of the smoking sportspeople were
determined to significantly increase compared to the non-smoking
sportspeople, especially after the second week, not the first week
(p<0.01). Inter-group comparison after the exercise program and the
comparison of the first and final vitamin A and E levels were observed
to be significantly different (p<0,05; p<0.01). As a result,
While smoking was determined to have a decreasing effect on the
melatonin and vitamin A and E levels, the antioxidant agent supplements
such as vitamin A and E were found to be protective regarding the
oxidative effects of smoking and to increase the melatonin levels in
sportspeople.
Key
words:smoking, exercise, melatonin, vitamin A and E.
Full
article:
The effect of vitamin A and E supplements on the plasma melatonin levels of smoking sportspeople
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