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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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THE CALCIOTROPIC HORMONE RESPONSE TO OMEGA-3 SUPPLE-MENTATION DURING LONG-TERM WEIGHT-BEARING EXERCISE TRAINING IN POST MENOPAUSAL WOMEN |
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Bakhtiar Tartibian1, Behzad Hajizadeh Maleki1 and Asghar Abbasi2  |
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1Department of Physical Education and Sport Science, Faculty of Humanities and Literature, Urmia University, Urmia, Iran, 2Institute of Clinical and Experimental Transfusion Medicine, University Hospital of Tuebingen, Tuebingen, Germany |
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© Journal of Sports Science and Medicine (2010) 9, 245 - 252 |
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| ABSTRACT | |||
| The purpose of this study was to examine the effects of ingestion
of omega-3 (n-3) and aerobic exercise intervention on the calcium regulating
hormones in healthy postmenopausal women. To this end, 56 healthy sedentary
postmenopausal women with mean age 57.7 ± 3.5 yrs participated in this study.
Participants were randomly divided into exercise plus supple-ment (E+S;
n = 14), exercise (E; n = 14), supplement (S; n = 14) and control (Con,
n = 14) groups. The subjects in E+S and E groups performed aerobic exercise
training (walking and jog-ging) up to 65% of exercise HRmax, three times
a week for 16 weeks. Subjects in E+S and S groups were asked to consume
1000 mg/d omega-3 for 16 weeks. The blood ionized Calcium (Ca+2), Parathyroid
hormone (PTH), estrogen and Calcitonin (CT) were measured before and after
16 weeks of exercise training. Results indicated that consuming 1000 mg·day-1
omega-3 during 16 weeks and or the aerobic exercise, significantly increased
CT (p = 0.001) in E+S, E and S groups and significantly decreased PTH (p
= 0.001) levels in E+S and E groups, also significantly increased estrogen
(p = 0.024) levels in E+S and E groups, but had no significant effects on
blood Ca+2 (p = 0.619) levels. The results of present study demonstrate
that omega-3 in combination with regular aerobic exercise training have
significant effects on serum CT, estrogen and PTH in non-athletic post-menopausal
women, suggesting that participating in moderate intensity weight-bearing
exercise and incorporating sources of omega-3 in the diet a possible intervention
to help slow the loss of bone that occurs following menopause.
Key words: Postmenopausal women, physical activity, parathyroid hormone, calcitonin, omega-3 fatty acids, bone mineral density. |
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