title: Myocardial adaptation to short-term high-intensity exercise in highly trained athletes.
abstract: We aimed to clarify the myocardial adaptation to short-term high-intensity exercise among trained athletes. We screened 17 participants in the 2004 World Indoor Rowing Championships before and after a 2000-m sprint. Echocardiography included standard measurements and tissue Doppler-derived strain (epsilon), strain rate, and 2-dimensionally derived speckle-tracking imaging for left ventricular (LV) torsion. LV volumes and ejection fraction were unchanged after exercise. There was a reduction in early and an increase in late diastolic filling velocities and a decrease in the flow propagation velocity. Annular systolic velocities, slope of the systolic acceleration, septal and lateral epsilon, and speckle tracking-derived torsion were increased. The increased LV torsion was a result of increased basal and apical rotation. Right ventricular apical epsilon decreased. In conclusion, maximal intensity short-duration exercise was associated with attenuation of LV diastolic function, augmentation of LV systolic function, and a reduction in apical right ventricular contractility.
authors.affiliation: Cardiac Ultrasound Laboratory, Division of Cardiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02115-2696, USA.
authors.forename: Tomas G
authors.initials: TG
authors.lastname: Neilan
authors.forename: Thanh-Thao
authors.initials: TT
authors.lastname: Ton-Nu
authors.forename: Davinder S
authors.initials: DS
authors.lastname: Jassal
authors.forename: Zoran B
authors.initials: ZB
authors.lastname: Popovic
authors.forename: Pamela S
authors.initials: PS
authors.lastname: Douglas
authors.forename: Elkan F
authors.initials: EF
authors.lastname: Halpern
authors.forename: Jane E
authors.initials: JE
authors.lastname: Marshall
authors.forename: James D
authors.initials: JD
authors.lastname: Thomas
authors.forename: Michael H
authors.initials: MH
authors.lastname: Picard
authors.forename: Danita M
authors.initials: DM
authors.lastname: Yoerger
authors.forename: Malissa J
authors.initials: MJ
authors.lastname: Wood
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology; D000328:Adult; D001824:Body Constitution / Q000502:physiology; D015150:Echocardiography, Doppler; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010807:Physical Endurance / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology*; D012767:Ships; D013177:Sports / Q000502:physiology*; D016276:Ventricular Function / Q000502:physiology*