Adolescents’ resting heart rate drops “not a good thing”


Robert Preidt
Health Day reporter

Monday, April 19, 2021 (Health Day News)-Children whose rest time suddenly decreases Heart rate As they become adults, their adult risk increases heart disease Researchers report that life in old age.

For their new study, they evaluated data from 759 black and white participants from the Augusta Heart Study, which aims to assess the development of risk factors for heart disease. It tracked young participants in the Augusta area of ​​Georgia, who grew up healthy and were 5-16 years old when they became adults.

In 21 years, check the participant’s resting heart rate at least 3 times. More than half of the people had their heart rate checked eight or more times, up to 15 times.

Researchers found that 30% of participants had a low resting heart rate at the beginning, and that their heart rate dropped relatively quickly as they entered adulthood. 45.6% of patients had a moderate resting heart rhythm at the beginning and a moderate decrease. Just over 24% of people start with a high resting heart rate and a low drop rate.

carry on

The heart rate decreased by 24.1, 19.1, and 17.4 beats per minute, respectively.

Further studies have shown that from childhood to adulthood, there is a significant correlation between the rapid decline in resting heart rate and the enlargement of the left ventricle, the main pumping chamber of the heart.

A faster drop in heart rate is also related to higher pressure levels in the blood vessels in the body. The heart must pump to higher levels in the heart to distribute blood and oxygen throughout the body.

According to a recent study by the University of Georgia School of Medicine published in the journal, these associations are generally stronger among black participants. Journal of Cardiology.

Dr. Gaston Kapuku, a cardiovascular researcher at the MCG Georgia Prevention Institute, said at a university press conference: “Over time, the unexplained decline is not a good thing.”

The response keeps pumping up blood pressure, The left ventricle becomes larger but weaker, which may eventually lead to heart failureThe researcher explained.

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Therefore, unless intense aerobic exercise causes a significant drop in heart rate, it may indicate that the person has an increased risk of heart disease and may benefit from medication. pacemaker According to the study authors, exercise may be performed to normalize the ratio.

More information

The Heart Rhythm Association has more on Slow heartbeat.

Source: Georgia Medical College, press release, April 14, 2021


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