Associations between left atrial indices and cardiorespiratory and muscular fitness among physically active military personnel.

ABSTRACT:

Background

Left atrial (LA) size and function are linked to exercise intolerance in heart failure, while associations between LA parameters and exercise performance remain unclear in athletes.

Objectives

This study aimed to identify correlations between echocardiographic LA size, pressure, stiffness, and composite indices, and various exercise performance indicators.

Methods

Echocardiographic parameters were obtained from 181 physically active military personnel receiving regular training and tests for a 3-km run and 2 min of push-ups and sit-ups. The top 16% of runners were compared sex-specifically, with the remaining 84% as controls to identify LA discriminators for running capacity. LA composite indices were defined as the LA volume index (LAVI) divided by the sti

SUBMITTER: Lin YC 

PROVIDER: S-EPMC11825789 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature