The study of Heart rate recovery period from treadmill Exercise stress test in child population 10 – 15 years old with normal Echocardiogram

Abstract

The heart rate recovery period is the duration from peak exercise to after exerciseuntil heart rate and blood pressure return to baseline. This parameter reflects as hemodynamic. The pattern of the heart rate recovery period is specific and different in each age group. However, the data about the heart rate recovery period in children is unclear and scanty. This retrospective research aims to study about characteristics and duration time of the recovery period after the exercise test in 34 children aged 10-15 years who had a normal echocardiogram and underwent Modified Bruce protocol of treadmill exercise stress test. From the report data since 2017-2019 showed the heart rate recovery period about 5.8 + 1.1 minutes at peak exercise to stage 6. The statistical comparison by Mann Whitney test showed no difference in Heart rate recovery period in males versus females (5.90 + 1.20 vs 5.84 + 0.97, P-value 0.855). BMI under 18.5 versus BMI 18.5 kg/m2 above (5.83 + 1.07 vs 5.98 + 1.23, P-value 0.43). Under 13 years old versus over 13 years old (5.92 + 1.25 vs 5.86 + 1.07, P-value 0.74) and not achieved stage 7 group
versus achieved stage 7 group (5.75 + 1.20 vs 6.09 + 0.90, P-value 0.46). The conclusion, the children 10-15 years old was a similar characteristic of the heart rate recovery period
by duration about 5.8 minutes and heart rate will decrease 15% at the first minute of recovery. This parameter shows the benefit of assessing and following in clinical and sport science.