Key result
High-level amateur marathon runners exhibited greater heart volumes and wall thicknesses compared to low-level runners, alongside better myocardial repair ability at 24 hours post-race.
Why the study?
The study was conducted to investigate the effects of long-term endurance exercise on cardiac morphology, function, and injury indicators among amateur marathon runners.
Does high-level amateur marathon running compared to low-level running affect cardiac morphology, function, and myocardial injury indicators after a marathon?
Population
33 amateur marathon runners
Comparison
National Athletic Grade of 2 or better vs no National Athletic Grade
Design
Observational study
Follow-up
24 h post-race
Authors
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Hypothesis-generating for training effects on runner cardiac remodeling; should not yet change practice.
Observational (n=33)
Does high-level amateur marathon running compared to low-level running affect cardiac morphology, function, and myocardial injury indicators after a marathon?
High-level amateur marathon runners exhibit greater baseline cardiac remodeling and faster recovery of myocardial injury markers 24 hours post-marathon compared to low-level runners.
Jian-zhong et al. (2023) conducted an observational in Amateur marathon runners (n=33). High-level amateur marathon running (National Athletic Grade of 2 or better) vs. Low-level amateur marathon running (no National Athletic Grade) was evaluated on Cardiac morphology, function, and injury indicators. High-level amateur marathon runners exhibited greater heart volumes and wall thicknesses compared to low-level runners, alongside better myocardial repair ability at 24 hours post-race.
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