ArticleEchocardiography (Mount Kisco, N.Y.)2026
Left Ventricular Mechanics and Myocardial Work in Competitive Sprinters.
Article in Echocardiography (Mount Kisco, N.Y.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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2 authors.
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Abstract
backgroundSprint exercise is characterized by repeated short-duration high-intensity anaerobic activity associated with distinct hemodynamic and autonomic adaptations. However, the effects of long-term sprint training on left ventricular (LV) mechanics and myocardial work (MW) parameters remain insufficiently investigated. This study aimed to evaluate LV global longitudinal strain (GLS) and MW indices in competitive sprinters.
methodsA total of 65 competitive sprinters and 40 age- and sex-matched healthy sedentary controls were prospectively enrolled. All participants underwent comprehensive transthoracic echocardiography, including two-dimensional speckle-tracking echocardiography and non-invasive myocardial work analysis. GLS, global myocardial work index (GWI), global constructive work (GCW), global wasted work (GWW), and global myocardial work efficiency (GWE) were quantified.
resultsResting heart rate was significantly lower, whereas stroke volume was significantly higher in sprinters compared with controls. However, LV GLS and principal MW indices, including GWI, GCW, GWW, and GWE, were comparable between groups (all p > 0.05). Intra- and interobserver reproducibility for MW measurements demonstrated good-to-excellent agreement.
conclusionLong-term sprint training appears to be associated with preserved myocardial mechanics and myocardial work indices despite chronic exposure to high-intensity anaerobic exercise, supporting the presence of physiological rather than maladaptive cardiac adaptation in competitive sprinters.
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