Correlation between blood pressure and vitamin D, parathyroid hormone, calcium, and phosphorus in sedentary postmenopausal women

Hypertension is one of the major risk factors for cardiovascular disease.
The studies show that factors such as vitamin D, parathyroid hormone, calcium and
phosphorus are involved in the regulation of blood pressure. The purpose of this study
was to investigate the relationship between blood pressure with vitamin D, parathyroid
hormone, calcium, and phosphorus in sedentary postmenopausal women.
Methods: This investigation is in the form of a descriptive correlational study that was
performed in September 2015. The statistical population was all healthy and sedentary
postmenopausal women 50-70 years old in Urmia city, Iran. Fifty-four sedentary
postmenopausal women were selected as subjects and voluntarily and bona fide
participated in this study. General and anthropometric characteristics of height, weight,
and body mass index (BMI) in subjects were measured by wall-meter with an accuracy
of one millimeter, digital scale with precision of 100 g (Beurer, Germany), and dual
emission X-ray absorptiometry (DXA) (Hologic, USA) machines, respectively.
Diastolic and systolic blood pressure was measured by indicator machine. Serum levels
of vitamin D, parathyroid hormone, calcium, and phosphorus were measured by ELISA
and Auto-analyzer (BT 1500, Biotecnica, Italy machines, respectively.
Results: The mean general, anthropometric, and physiological/laboratory variables of
subjects were: age 54 yr, height 156 cm; weight 72 kg; BMI 29 kg/m2; systolic and
diastolic blood pressure 76.20 and 110.70, respectively; vitamin D 25.22 ng/ml,
parathyroid hormone 33.29 ng/ml, calcium 9.44 ng/ml, and phosphorus 3.26 ng/ml.
Moreover, results showed that there was no significant relationship between systolic
and diastolic blood pressure and vitamin D (P>0.581 and P>0.619, respectively). There
was no significant relationship between systolic and diastolic blood pressure and
parathyroid hormone (P>0.623 and P>0.341, respectively). There was no significant
relationship between systolic and diastolic blood pressure and calcium (P>0.704 and
P>0.141, respectively). There was no significant relationship between systolic and
diastolic blood pressure and phosphorous (P>0.058 and P>0.357, respectively).
Conclusion: The results suggest that there is no relationship between systolic and
diastolic blood pressure with serum levels of vitamin D, parathyroid hormone, calcium,
and phosphorous in sedentary postmenopausal women 50-70 years old.