Heart abnormalities from premature birth can be corrected with exercise in young adulthood

A new study presented at EuroCMR 2019, has revealed that a short exercise programme may improve overall cardiac performance and subtle abnormalities in cardiac function in preterm adults.

By: ANI | | Published: May 6, 2019 10:59 am

Exercise in early adulthood corrects heart abnormalities. © Shutterstock

People who suffer from heart abnormalities due to preterm birth could correct the damage with exercise in young adulthood, according to a study, which was presented at EuroCMR 2019. Around one to two per cent of adults today were born more than two months prematurely (very preterm) and have heart abnormalities that increase their risk of cardiovascular disease. Also Read - Pregnancy: Metal exposure may lead to preterm births and pre-eclampsia in pregnant women

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For instance, the heart is smaller and has to pump harder to supply the body with blood.”Until now we did not know if this was permanent or amenable to improvement. Now, for the first time, we have shown how to make preterm hearts function as well as their peers. Also Read - Preterm birth may up premature death risk in mothers: Here’s what you can do to prevent early delivery

No drugs were required – just a 14-week exercise programme,” said Anne Monique Nuyt, co-principal investigator. The study enrolled 14 participants aged between 18-29 years, of whom eight were born very preterm and six acted as controls. All participants underwent a 14-week exercise programme of aerobic and resistance training three times a week.

This included two supervised 90-minute group sessions and one home-based monitored session. The heart`s structure and function were measured before and after the exercise programme using cardiovascular magnetic resonance (CMR) imaging. Compared to controls, heart structure and function were worse in preterm participants at the start of the study but similar after the exercise programme.

Specifically, the heart`s pumping and contracting functions normalised, meaning the heart no longer had to work extra hard to provide the body with blood. “We found that a short exercise programme may improve overall cardiac performance and subtle abnormalities in cardiac function in preterm adults,” said first author Elizabeth Hillier.

“Advances in neonatal care have enabled premature babies to survive but the abnormal shape and function of the heart are sustained. Exercise in early adulthood corrects these impairments, which should reduce the risk of cardiovascular disease,” Hillier added. The team used a CMR protocol that visualises subtle changes in heart shape and function.

Imaging was performed during hyperventilation for 60 seconds followed by a breath-hold to assess how the heart functioned in a stressful situation (similar to diving).Hillier said: “With this technique, we can detect even mild abnormalities and track the response to interventions. Unlike other methods, we did not have to inject a dye, no radiation was used, and we did not need to administer drugs to put the heart under stress.”

Published : May 6, 2019 10:59 am

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