Scientific Paper presentation Physiotehrapy

1. CHA-22-15
21 December 2015 1CHAPCON-2015
A COMPARATIVE STUDY TO ASSESS
AEROBIC CAPACITY IN
NORMAL FEMALES
VERSUS
HYPOTENSIVE FEMALES

2. 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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3. • 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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4. 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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5. DATA ANALYSIS
• Test used: Z test was used
• Level of Significance: P<0.05
• Confidence Interval:95%
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6. RESULTS
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Variables 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

8. DISCUSSION
Results of the present study suggested that
• VO2 max values of both the groups were in ‘good’ category of
normative data of VO2max.
• VO2max values of hypotensive females were found to be
significantly low statistically compared to group of normal healthy
females.
• At the onset of exercise, oxygen uptake of exercising muscles
increases after a delay of few seconds and oxygen extraction
peaks after 50 seconds of exercise.
• Reduced arterial pressure most likely limits perfusion to exercising
skeletal muscle.
• That (imbalance between limited perfusion and increased
demands) could be a reason for low VO2max values for
hypotensive females group.
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9. 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 .
• Common fatigue and weakness symptoms found in
hypotensive individuals may be due to low VO2max which can
be improved through exercise training.
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10. REFERENCES
1. 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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