Cardiovascular autonomic responses to whole body isotonic exercise in normotensive healthy young adult males with parental history of hypertension.
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Date
2010-01
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Abstract
The objective of this study was to assess blood pressure and
autonomic activity during rest and recovery in young adult normotensives
offsprings of hypertensives. A total of 49 healthy normotensive males with
BMI of 18.5–24.9 kg/m2 chosen for the study and classified into two groups
based on their parental history of hypertension underwent a sub maximal
cycle ergometry exercise test. ECG and heart rate were recorded at baseline,
during the exercise test and during recovery period of ten minutes while
blood pressure was recorded at baseline and during recovery. Spectral
analysis of HRV was performed. The basal systolic blood pressure and the
recovery systolic blood pressures at the 1st and 3rd minute of recovery
after exercise test were significantly higher in the study group than the
control group. The basal LFnu and LF/HF ratio were significantly higher
while the basal HFnu was significantly lower in the study group than the
control group. A difference in basal systolic blood pressure, a higher LFnu
and a lower HFnu found in offspring of hypertensive parents may be an
early marker of cardiovascular change in subjects with a genetic
predisposition to hypertension.
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Keywords
blood pressure, heart rate variability, isotonic exercise
Citation
Sowmya R, Maruthy K N, Gupta Rani. Cardiovascular autonomic responses to whole body isotonic exercise in normotensive healthy young adult males with parental history of hypertension. Indian Journal of Physiology and Pharmacology. 2010 Jan-Mar; 54(1): 37-44.