The Study of Heart Rate Response During Treadmill Exercise Stress Test in Child and Adolescent 10-15 Years Old
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Abstract
BACKGROUND: The heart rate response during exercise reflects cardiovascular efficiency, which can be tested and assessed using a treadmill exercise test. This test also shows heart rate and other parameters during both rest and peak exercise periods; however, there is limited research number on the heart rate response of 10-15 years old Thai adolescents using the modified Bruce protocol.
OBJECTIVE: This study aims to analyze in the four study points, consist of (1) The heart rate response of children during exercise (2-3) The comparison in the heart rate responses between females and males, between those aged under 13 years old and those aged over 13 years old. (4) The study in correlation of heart rate versus speed of treadmill.
MEDTHODS: In the retrospective study, we reviewed exercise stress test report of the modified Bruce protocol. We compared heart rate between male versus female, between under 13 years old versus greater by Sample t-test. We analyzed correlation of heart rate and speed by Spearman correlation.
RESULTS: All 37 participants have normal echocardiogram (M=20, F=17) and able to run on the treadmill for an average of 18 minutes (modified Bruce protocol stage 6). During the peak exercise, the heart rate increased to 191% from baseline. The heart rate response showed a strong correlation with the speed of the treadmill (rs=0.85, p<0.05). Female gender group has significant increase in heart rate response when compared with male gender group (127±32.1 VS 123±29.8 beat/min., p<0.05). Also, the age 13-15 years group has significant increase in heart rate response when compared with the age 10-12 years group (127±28.2 VS 117±25.4 beat/min., p<0.05).
CONCLUSIONS: Thai adolescents’ age 10-15 years old achieved an average of 18 minutes or modified Bruce protocol stage 6 during exercise treadmill test. The heart rate increased 191% and showed a strong correlation with speed. At peak exercise, female and age greater than 13-year-old group have significantly higher heart rate compared with male and age lower than 13-year-old.
Thaiclinicaltrials.org number, TCTR20240607002
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