Key result
Endurance training in young female athletes links to ~15% greater LVMI and larger chambers versus mixed training.
Why the study?
Athletic heart syndrome in females varies substantially from males, prompting exploration of how sports-related factors affect left heart chambers in young female athletes.
Does endurance training compared to mixed training increase left heart chamber sizes in young female athletes?
Cross-Sectional (n=28)
Does endurance training compared to mixed training increase left heart chamber sizes in young female athletes?
Absolute Event Rate: 68.3% vs 59.2%
p-value: p=0.02
Endurance training in young female athletes is associated with greater left heart chamber volumetric indices and mass compared to mixed training, with weekly training time significantly moderating this cardiac remodeling.
Should not yet change training guidance; leaves open longitudinal cardiac outcomes in young female athletes.
Objective: Athletic heart syndrome (AHS) represents a physiological and morphological adaptation of the heart to longstanding intensive training.Left ventricular (LV) chamber sizes are primarily affected by the complex interplay of sportsassociated factors.AHS in females substantially varies from males due to underlying physiological, hormonal, and anthropometric differences.This study aims to explore the influence of sports-related factors on left heart chambers in young female athletes (FA).Methods: A cross-sectional study was conducted in 28 young FA, who undergo training for at least 3 months with a minimum of 3 times weekly sessions.They were divided in 2 groups: endurance (END) and mixed-training (MIX).We assessed using echocardiography: left atrial volume index (LAVI), end-diastolic (EDV) and end-systolic (ESV) LV volumes, LV mass index (LVMI).Comparisons were performed using t-tests or Mann-Whitney U tests.A MANCOVA was selected to determine the relationship between sports-related factors and left heart indices.Post-hoc contrast and margins tests were conducted to show a correlation with exact cardiac parameters.Results: Groups were matched by age, body surface area, and total training duration.However, weekly training time (WTT) was higher in END athletes (12.7 (5.3) vs. 5.7 (0.8), p<0.001) and left cardiac indices were greater in END athletes than in MIX counterparts: LAVI (28.8 vs.18.7 ml/m2, p=0.009),EDV (81.1 (11.7) vs 66.1 (16.8) ml, p=0.01),ESV (29.6 (10.8) vs. 20.5 (10) ml, p=0.01) and LVMI (68.3 (11.7) vs. 59.2 (8.2) gr/m 2 , p=0.02).According to MANCOVA, higher WTT (p=0.03, = 0.44), was associated with increased LAVI, EDV, and LVMI values.Mean differences obtained from contrast analysis showed significant variations of only LVMI between training groups (-13.17,p=0.04).Post-hoc analysis revealed significantly higher values of all chamber parameters in END athletes (p<0.001).Conclusions: Young FA have distinct cardiac adaptations based on training type and training load time.END athletes exhibited greater volumetric indices and LVM compared to MIX athletes, emphasizing the significant influence of training intensity and modality on cardiac remodeling.Furthermore, the hypothetical moderating role of the WTT in the relationship between training type and left heart chamber sizes was observed.These findings emphasize the importance of individualized cardiac evaluation in FA for the adequate management of the AHS.
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Abibillaev et al. (2024) conducted a cross-sectional in Athletic heart syndrome (n=28). Endurance training vs. Mixed-training was evaluated on Left ventricular mass index (LVMI) (p=0.02). Endurance training in young female athletes was associated with significantly greater left ventricular mass index compared to mixed training (68.3 vs. 59.2 gr/m2, p=0.02) and larger chamber volumes.
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