The Claim
Endurance athletes at rest exhibit an E/A ratio greater than 2, which is indicative of enhanced early diastolic filling resulting from improved ventricular recoil and relaxation, rather than pathological pseudonormalization or restrictive filling patterns.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Endurance athletes have a specific heart filling pattern at rest characterized by an E/A ratio above 2, which reflects more efficient relaxation and recoil of the heart muscle during the early filling phase, distinct from abnormal heart filling patterns seen in disease.
See the scientific wording
Endurance athletes demonstrate an elevated E/A ratio (>2) at rest, which reflects enhanced early diastolic filling due to improved ventricular recoil and relaxation, not pathological pseudonormalization or restrictive filling.
The heart's main pumping chamber becomes larger and more elastic from long-term endurance training, allowing it to snap back quickly after each beat. This snap-back pulls blood in rapidly during early relaxation, while the heart muscle also relaxes faster because it handles calcium more efficiently. Together, these changes cause a strong early filling wave that raises the E/A ratio without increasing pressure or stiffness.
What the research says
1 studyStudy: Diastolic function and dysfunction in athletes
Endurance athletes often have a high E/A ratio on heart scans, which looks like a heart problem but isn't — it's just their heart getting better at filling with blood after each beat because of training.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.