Effect of Gender on Cardiovascular Response at 12.5% of Maximum Voluntary Contractions of Dynamometer
Journal Title: INTERNATIONAL JOURNAL OF CURRENT RESEARCH IN MEDICAL SCIENCES - Year 2016, Vol 2, Issue 5
Abstract
Introduction: Handgrip device held at 30% of maximum voluntary contractions (MVC) is one among the batteries of test to assess the sympathetic autonomic nervous system (ANS). Subjects at our set-up failed to continue contracting the hand for the recommended 4 min. Therefore we tried to find the minimum percentage of MVC that could affect the sympathetic ANS and we also tried to explore the effect of gender on the acute physical stress. Materials: Subjects recruited were healthy health science students. Male (n=30) were of age 21.03 ± 1.73 yrs (mean ± S.D.) and female (n=30) were 19.93 ± 0.91 yrs. The study was conducted at Neurophysiology and Neurocardiology Lab in the Department of Basic and Clinical Physiology, BPKIHS. Acute minimal physical stress was 12.5% of MVC held for 5 min. Blood pressure (BP) was measured at the end of 2 and 4 min. Results: The given physical stress significantly raised the diastolic BP (DBP)in both the gender from the baseline (rest vs. at 4 min of physical stress: 76.33 ± 7.60 vs. 100.60 ±7.61 mmHg, p=0.001 in male; 71.53 ± 4.75 vs. 91.07 ± 9.82 mmHg, p= 0.001 in female). However the rise in DBP was not significantly different between the gender (male vs. female: 100.60 ± 7.61 vs. 91.07 ± 9.82 mmHg, p= NS). Conclusion: The selected stress,12.5% of MVC, elicited cardiovascular response and thus could be used to determine the adequacy of sympathetic response of cardiac function. Post ovulatory female demonstrated comparable DBP rise as male subjects on exposure to 12.5% of MVC handgrip as acute stress.
Authors and Affiliations
Dr. Karishma Rajbhandari Pandey1* , Dr. Rita Khadka1 , Prof. Bishnu Hari Paudel1 , Dr. Kopila Agrawal1 , Dr. Dipesh Raj Panday2
Keywords
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