ARTICLE –
abstractHeart
rate and blood pressure responses in adolescent distance runners with
personal or familial history of cardiac problem and hypertension and
their significance as prognostic indicators for underlying
cardiovascular problems Jaspal S.Sandhu, Sarika, Jyoti Shekhar Department
of Sports Medicine and Physiotherapy, Guru Nanak Dev University,
Amritsar, India
Abstract
Objectives
1.To
analyze and compare heart rate and blood pressure responses of runners
with or without family history of cardiac problem including
hypertension. 2. Validation of heart rate recovery as an
important
prognostic indicator of underlying cardiovascular problem in adolescent
population. Design. Observational analysis,
different subject design. Methods.
50 high school (14-18 years) middle and long distance runners with
positive family history were taken in one group and 50 other runners
were taken with non-significant family history. All the subjects
underwent treadmill stress testing using Bruce protocol. Heart rate and
blood pressure were observed and documented for resting, exercise and
recovery periods. Heart rate in recovery period was noted for 1st,
2nd, 3rd, 5th
and 8th min. in supine lying. Main Outcome measures: It was
hypothesized that runners with significant family history will have
higher values of blood pressure and heart rate response in resting and
exercise phase and lesser drop in heart rate during recovery period. Results.
Heart rate responses: Resting and peak exercise heart rate- Significant
differences (p≤0.01) were noted. Heart rate in recovery- Highly
significant differences (p≤0.001) was noted for all the recovery
times. Blood Pressure: Post exercise systolic BP showed significant
difference (p≤.005). Conclusion. Adolescent
runners with
significant family history of cardiac problem and hypertension tend to
have lesser drop in their heart rate after exercise. Evaluation of
heart rate during recovery period along with other parameters of
cardiovascular screening can help in better prognosis of underlying
disease.
Key
words:Bruce
treadmill protocol, heart rate recovery, blood pressure
|