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Related Experiment Videos

Cardiovascular reactivity in Malay Moslems during Ramadan

R Husain1, S H Cheah, M T Duncan

  • 1Department of Physiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.

Singapore Medical Journal
|August 1, 1996
PubMed
Summary

Observance of Ramadan in Malaysia did not alter cardiovascular reactivity to cold stress. However, blood pressure and vascular resistance increased during Ramadan, even without cold stimulus.

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Area of Science:

  • Physiology
  • Cardiovascular Research
  • Islamic Studies

Background:

  • The observance of Ramadan involves significant daily fasting.
  • Potential physiological impacts of Ramadan fasting on cardiovascular health require investigation.
  • Previous studies show varied effects of Ramadan on circulatory parameters.

Purpose of the Study:

  • To investigate the association between Ramadan observance and cardiovascular parameter modifications in Malaysian Muslims.
  • To assess cardiovascular reactivity using a cold hand immersion test during Ramadan.

Main Methods:

  • Cardiovascular reactivity was assessed using the cold hand immersion test.
  • Blood pressure and vascular resistance were measured.
  • Data collected during Ramadan was compared to baseline or non-Ramadan periods.

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Main Results:

  • An increase in blood pressure and vascular resistance was observed during Ramadan, independent of cold stimulus.
  • The magnitude of maximal cardiac and vascular response to cold stress, as indicators of reactivity, remained unaffected by Ramadan observance.

Conclusions:

  • Ramadan observance in Malaysia is associated with altered resting circulatory parameters (blood pressure, vascular resistance).
  • Cardiovascular reactivity to acute stress (cold immersion) is not significantly modified by Ramadan observance in this population.