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Background: Limited research has been carried out to compare acute cardiovascular responses to static and dynamic exercise in older adult. So in our study we compared the responses to static and dynamic exercise in older adults to find out and support the inclusion of resistance exercise as a part of fitness program designed for healthy subjects of older age group. Aims & Objective: The purpose of this study was to compare the acute cardiovascular responses of healthy older adults to static and dynamic exercise. Methods: In the present study 8 healthy normotensive volunteers, recruited in age group of 40-60 years, performed IHG exercise. Their HR and BP were recorded prior to and after one minute of 40% maximum voluntary contraction of the forearm. Then after a gap of two weeks subjects, performed dynamic exercise using ergo metric cycle. Their HR and BP were recorded prior to and after one minute of completion of exercise. All the recordings were compared before and after both types of exercise. Results: Both types of exercise led to significant rise in SBP, & HR. The rise in DBP was significant in subjects who performed static exercise only. From BP and HR responses, it is clear that acute responses to both exercises are almost similar, supporting the inclusion of static exercise in exercise programs for older adults. Conclusion: This study indicates that the press or response is well regulated in both exercise groups. This supports the inclusion of resistance exercise as part of an overall fitness program designed for healthy older adults.
RESUMEN
Background: Tobacco smoke is said to cause changes in the levels of catecholamines in the blood, this leads to an increase in blood pressure and heart rate. This is due to nicotine which has also been noted to cause a decrease in vasodilatory activities leading to an increase in both the blood pressure and heart rate. Aim: To determine the acute effects of tobacco smoke on haemodynamics in black male adolescents in Lusaka, Zambia. Study Design: This was an observational study done at the University of Zambia School of Medicine Cardiovascular Research Laboratory in the month of December, 2014. Methodology: Twenty-two (22) black, male-adolescent (age range 19-25 years), active-smokers, consented to participate in the study. The Diasys Ambulatory Blood Pressure Monitoring system (Novacor, France) was used to obtain the Systolic and Diastolic blood pressures (SBP and DBP) and the heart rate. These were obtained 15 minutes before smoking at 5 minute intervals and averaged to obtain the baseline, during the 15 minutes of smoking and on immediate cessation of smoking and thereafter every 15 minutes up to an hour after smoking. Results: There was a significant rise in SBP (mmHg) during smoking (127.9±13.80 mmHg) from baseline values (113.5±13.15 mmHg) (P < .001). It took 30 minutes for the SBP to return to baseline after cessation of smoking. DBP (mmHg) also increased from baseline (79.5±8.79 mmHg) to 85.6±10.92 mmHg during smoking (P <.01). It returned to baseline values immediately after cessation of smoking. The heart rate (bpm) was also noted to significantly increase during smoking (95.2±16.72 bpm) from the values noted before smoking (74.3±13.75 bpm) (P < .05). The mean value for heart rate returned to baseline value by the 15th minute of recovery. Conclusion: The present study demonstrates that smoking may be the cause for the acute increases in SBP, DBP and heart rate in smokers. The smoking caused significant increases in all the haemodynamic indices considered in this study within 15 minutes. Both SBP and DBP increases are indices for stroke and coronary heart disease respectively. The effect of increased SBP was noted to last for 30 minutes while DBP returned to baseline immediately after smoking. A significant increase in heart rate was also noted in the study.
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Objective To find a new algorithm for oscillometric blood pressure measurement. Method A coefficient difference comparative method was proposed to measure the difference of adjoining pulse waves and their comparative ratios. And the turning point was judged by priority way in the range. Result The new method settled the problem of miscarriage of justice of the turning point around average pressure and improved the accuracy of blood pressure measurement. Conclusion It can detect difference between cardiovascular patients and normal persons. And it is effective and reliable in blood pressure measurement. It provides a convenient method for researching, preventing and epidemiological studies of cardiovascular diseases in our country.