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Article Abstract
Background: People born preterm (<37 weeks' gestation) have a potentially adverse cardiac phenotype that progresses with blood pressure elevation.
Objectives: The authors investigated whether preterm-born and term-born adults exhibit similar cardiac structural and functional remodeling following a 16-week aerobic exercise intervention.
Methods: We conducted a randomized controlled trial in 203 adults (aged 18-35 years) with elevated blood pressure or stage 1 hypertension. Participants were randomized 1:1 to a 16-week aerobic exercise intervention or to a control group. In a prespecified cardiovascular magnetic resonance imaging (CMR) substudy, CMR was performed at 3.0-Tesla to assess left and right ventricular (LV and RV) structure and function before and after intervention.
Results: A total of 100 participants completed CMR scans at baseline and after the 16-week intervention, with n = 47 in the exercise intervention group (n = 26 term-born; n = 21 preterm-born) and n = 53 controls (n = 32 term-born; n = 21 preterm-born). In term-born participants, LV mass to end-diastolic volume ratio decreased (-3.43; 95% CI: -6.29 to -0.56; interaction P = 0.027) and RV stroke volume index increased (5.53 mL/m; 95% CI: 2.60, 8.47; interaction P = 0.076) for those in the exercise intervention group vs controls. No significant effects were observed for cardiac structural indices in preterm-born participants. In preterm-born participants, LV basal- and mid-ventricular circumferential strain increased (-1.33; 95% CI: -2.07 to -0.60; interaction P = 0.057 and -1.54; 95% CI: -2.46 to -0.63; interaction P = 0.046, respectively) and RV global longitudinal strain increased (1.99%; 95% CI: -3.12 to -0.87; interaction P = 0.053) in the exercise intervention group vs controls. No significant effects were observed for myocardial deformation parameters in term-born participants.
Conclusions: Aerobic exercise training induces improved myocardial function but not cardiac structure in preterm-born adults.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12063111 | PMC |
| http://dx.doi.org/10.1016/j.jacadv.2025.101721 | DOI Listing |
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