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CHA-22-15

A COMPARATIVE STUDY TO ASSESS AEROBIC CAPACITY IN

NORMAL FEMALES VERSUS

HYPOTENSIVE FEMALES

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INTRODUCTION

• The global burden of hypertension as a leading risk factor for cardiovascular and kidney disease, and for mortality, has overshadowed possible health problems associated with chronic low blood pressure.

• In most healthy adults, low blood pressure does not cause problems or symptoms.1

• There are few studies evaluating fitness in hypotensive individuals.

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• Person’s fitness level is dependent on the amount of oxygen which can be transported by the body to the working muscles and efficiency of the muscles to use that oxygen.2

• VO2 Max is the internationally accepted parameter to evaluate the cardiorespiratoary fitness.3

• This study aimed at evaluating level of fitness (VO2 Max values) in normal and hypotensive individuals through Queen’s college step test.

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MATERIALS AND METHODS• Design of the study: Cross Sectional

• Sample Size:70 Females

• Hypothesis: VO2 Max values of Normal and Hypotensive females are same

• Procedure: Data is collected by assessing VO2 Max indirectly by Queen’s college step test.

• The subjects step up and down on the platform at a rate of 22 steps per minute .

• The subjects have to use 4 step cadences up-up & down-down for 3 minutes.

• The subjects stop immediately on completion of the test and VO2 Max values were calculated for both the groups.

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DATA ANALYSIS

• Test used: Z test was used

• Level of Significance: P<0.05

• Confidence Interval:95%

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RESULTSVariables Group 1 Group 2

Systolic Blood Pressure 114.85±5.07 101.77 ±6.85

Diastolic Blood Pressure 74.57±5.60 62.86±9.87

Heart Rate at rest 77.97 ±7.62 81.77 ±7.02

Heart Rate after exercise 86.97± 11.84 94.4 ±4.88

VO2 Max 49.42± 1.80 48.05± 0.72

Group 1: Normal Individuals Group 2 :Hypotensive patients

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50

49.5

49

48.5

48

47.5

47

Vo2 max value for normal individuals

Vo2 max value for hypotensive individuals

VO2 MAX VALUES FOR NORMAL AND HYPOTENSIVE INDIVIDUALS

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DISCUSSION• The finding of present study suggests, the normal individuals have

higher VO2 Max value than the hypotensive individuals. • Primary hypotension is low blood pressure that develop in the

absence of any underlying disease or cause ,how ever the persons with primary hypotension are not easily susceptible to heart or renal disorders, frequent fatigue and weak are the common symptoms of this condition.

• This could be the probable reason that Normal individual has a good capability to work where as hypotensive individuals get fatigue very soon thus cannot work for a long time and thus their VO2 max value is less than normal individuals.

• There are studies suggesting correlation between hypotension and anxiety and depression.

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CONCLUSION• VO2 Max values were found to be higher in normal individuals

as compared to hypotensive females.

• Scope for Future Research: can be done in large population with different variables

• Relevance to Public Health and/or Clinical Practice: Hypotension also needs attention when compared with other NCD’s . We need to take care of fitness levels of individuals with Non-symptomatic chronic hypotension .

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REFERENCES1. Hildrum B. Association of low blood pressure with anxiety

and depression. J Epidemiol Community Health. 2007 Jan; 61(1): 53–58.

2. Wilmore JH and costill DL. Physiology of sport and exercise: 3rd edition. Champaign, IL: human kinetics: 2005.

3. Chatterjee S, Chatterjee P, Bandyopadhyay A. validity of Queens College step test for estimation of maximal oxygen uptake in female students. Indian J Med Res 2005; 121:32-35.

4. Essentials of medical Physiology Sembulingam,Sixth edition. page no 615,jaypee brother publishers.

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