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Different effects of prolonged exercise on the right and left ventricles.

Publication ,  Journal Article
Douglas, PS; O'Toole, ML; Hiller, WD; Reichek, N
Published in: J Am Coll Cardiol
January 1990

To examine the functional consequences of the greater increase in right ventricular work with exercise, the effects of prolonged exercise on the right and left heart chambers were compared in 41 athletes before, at the finish (13 min) and after recovery (28 h) from the Hawaii Ironman Triathlon (3.9 km swim, 180.2 km bike ride, 42.2 km run). Two-dimensional and Doppler echocardiograms were analyzed for left and right atrial and ventricular areas at end-diastole and end-systole, right and left ventricular inflow velocities and mitral and tricuspid regurgitation. After exercise, left ventricular and left and right atrial sizes were reduced, whereas right ventricular size increased (diastole: 21.4 to 24.2 cm2; systole: 15.8 to 18.2 cm2; p less than 0.01). The emptying fraction of all chambers was unchanged. Left but not right ventricular inflow showed an increase in peak velocity of rapid filling, whereas both atrial systolic velocities increased (26 to 38 cm/s tricuspid; 38 to 54 cm/s mitral; both p less than 0.01). Overall, the right ventricular early to atrial velocity ratio was reduced after exercise (1.56 to 1.17; p less than 0.05) and the left ventricular pattern was unchanged. The prevalence of tricuspid regurgitation was statistically unchanged (86% to 52%), although that of mitral regurgitation was greatly reduced (76% to 0%). Changes in all variables returned toward prerace values during recovery. Thus, in highly trained athletes, prolonged exercise causes differing responses of the right and left ventricles. These differences may be due to changes in right ventricular function, shape or compliance.

Duke Scholars

Published In

J Am Coll Cardiol

DOI

ISSN

0735-1097

Publication Date

January 1990

Volume

15

Issue

1

Start / End Page

64 / 69

Location

United States

Related Subject Headings

  • Ventricular Function
  • Swimming
  • Stroke Volume
  • Running
  • Physical Exertion
  • Physical Endurance
  • Myocardial Contraction
  • Male
  • Humans
  • Female
 

Citation

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MLA
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Douglas, P. S., O’Toole, M. L., Hiller, W. D., & Reichek, N. (1990). Different effects of prolonged exercise on the right and left ventricles. J Am Coll Cardiol, 15(1), 64–69. https://doi.org/10.1016/0735-1097(90)90176-p
Douglas, P. S., M. L. O’Toole, W. D. Hiller, and N. Reichek. “Different effects of prolonged exercise on the right and left ventricles.J Am Coll Cardiol 15, no. 1 (January 1990): 64–69. https://doi.org/10.1016/0735-1097(90)90176-p.
Douglas PS, O’Toole ML, Hiller WD, Reichek N. Different effects of prolonged exercise on the right and left ventricles. J Am Coll Cardiol. 1990 Jan;15(1):64–9.
Douglas, P. S., et al. “Different effects of prolonged exercise on the right and left ventricles.J Am Coll Cardiol, vol. 15, no. 1, Jan. 1990, pp. 64–69. Pubmed, doi:10.1016/0735-1097(90)90176-p.
Douglas PS, O’Toole ML, Hiller WD, Reichek N. Different effects of prolonged exercise on the right and left ventricles. J Am Coll Cardiol. 1990 Jan;15(1):64–69.
Journal cover image

Published In

J Am Coll Cardiol

DOI

ISSN

0735-1097

Publication Date

January 1990

Volume

15

Issue

1

Start / End Page

64 / 69

Location

United States

Related Subject Headings

  • Ventricular Function
  • Swimming
  • Stroke Volume
  • Running
  • Physical Exertion
  • Physical Endurance
  • Myocardial Contraction
  • Male
  • Humans
  • Female