EFFECT OF CIRCADIAN RHYTHM ON THE BLOOD PRESSURE ADJUSTMENT IN RESPONSE TO A PHYSICAL STRESS

Authors

  • Muhammad Tariq Aftab Professor of Pharmacology and Therapeutics, Karachi Medical and Dental College, Karachi, Pakistan
  • Nimrah Miraj Department of Pharmacology & Therapeutics, Karachi Medical and Dental College, Karachi, Pakistan
  • Sobia Masood Department of Pharmacology & Therapeutics, Karachi Medical and Dental College, Karachi, Pakistan
  • Sehba Shamim Department of Pharmacology & Therapeutics, Karachi Medical and Dental College, Karachi, Pakistan
  • Shafaq Fayyaz Department of Pharmacology & Therapeutics, Karachi Medical and Dental College, Karachi, Pakistan

DOI:

https://doi.org/10.69656/pjp.v9i1.323

Keywords:

Circadian Rhythm, Blood Pressure, Physical Stress, Blood Pressure control

Abstract

Background: Many studies have shown a relationship between circadian rhythm and certain physiological functions and pathological changes in the body. Blood pressure is highly sensitive in this regard. The role of circadian rhythm in controlling the blood pressure requires further exploration. This study was conducted to investigate variability of blood pressure adjustment due to circadian rhythm after a physical stress. Method: Data was collected from 29 undergraduate students after consent and briefing them the nature and purpose of the study. Blood pressure changes in the morning and afternoon after same physical stress were noted. Result: It was found that circadian rhythm has significant effect (p<0.05) on systolic and diastolic blood pressures in the morning (from 8 to 9 AM) and afternoon (from 2 to 3 PM). This difference becomes insignificant (p>0.05) in these two phases of the day due to larger changes (p<0.05) in these two parameters by same exercise. But after five minutes the adjustment of systolic and diastolic Blood pressures in so effective that a significant (p<0.05) difference is again retained in the systolic and diastolic blood pressures. Conclusion: The blood pressure controlling mechanism becomes more responsive with circadian rhythm to control the larger changes of blood pressure effectively.

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Published

30-06-2013

How to Cite

1.
Aftab MT, Miraj N, Masood S, Shamim S, Fayyaz S. EFFECT OF CIRCADIAN RHYTHM ON THE BLOOD PRESSURE ADJUSTMENT IN RESPONSE TO A PHYSICAL STRESS. Pak J Phsyiol [Internet]. 2013 Jun. 30 [cited 2024 Dec. 21];9(1):26-8. Available from: https://pjp.pps.org.pk/index.php/PJP/article/view/323

Issue

Vol. 9 No. 1 (2013): Pakistan Journal of Physiology

Section

Original Article

License

Pakistan Journal of Physiology, Pak J Physiol, PJP is FREE for research and academic purposes. It can be freely downloaded and stored, printed, presented, projected, cited and quoted with full reference of, and acknowledgement to the author(s) and the PJP. The contents are published with an international CC-BY-ND-4.0 License.