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Sheldahl LM, Wilke NA, Dougherty SM, et al. Effect of age and coronary artery disease on response to snow shoveling. J Am Coll Cardiol. 1992;20(5):1111-7doi: 10.1016/0735-1097(92)90366-u.
Sheldahl, L. M., Wilke, N. A., Dougherty, S. M., Levandoski, S. G., Hoffman, M. D., & Tristani, F. E. (1992). Effect of age and coronary artery disease on response to snow shoveling. Journal of the American College of Cardiology, 20(5), 1111-7. https://doi.org/10.1016/0735-1097(92)90366-u
Sheldahl, L M, et al. "Effect of age and coronary artery disease on response to snow shoveling." Journal of the American College of Cardiology vol. 20,5 (1992): 1111-7. doi: https://doi.org/10.1016/0735-1097(92)90366-u
Sheldahl LM, Wilke NA, Dougherty SM, Levandoski SG, Hoffman MD, Tristani FE. Effect of age and coronary artery disease on response to snow shoveling. J Am Coll Cardiol. 1992 Nov 01;20(5):1111-7. doi: 10.1016/0735-1097(92)90366-u. PMID: 1401611.
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Elsevier Science

J Am Coll Cardiol. 1992 Nov 01;20(5):1111-7. doi: 10.1016/0735-1097(92)90366-u.

Effect of age and coronary artery disease on response to snow shoveling.

Journal of the American College of Cardiology

L M Sheldahl, N A Wilke, S M Dougherty, S G Levandoski, M D Hoffman, F E Tristani

Affiliations

  1. Department of Medicine, Veterans Affairs Medical Center, Milwaukee, Wisconsin 53295.

PMID: 1401611 DOI: 10.1016/0735-1097(92)90366-u
Free Article

Abstract

OBJECTIVES: The objective of this study was to evaluate the effect of age and coronary artery disease on responses to snow shoveling.

BACKGROUND: Little information is available on the hemodynamic and metabolic responses to snow shoveling.

METHODS: Sixteen men with asymptomatic coronary artery disease and relatively good functional work capacity, 13 older normal men and 12 younger normal men shoveled snow at a self-paced rate. Oxygen consumption, heart rate and blood pressure were determined. In nine men with coronary artery disease left ventricular ejection fraction was evaluated with an ambulatory radionuclide recorder.

RESULTS: Oxygen consumption during snow shoveling differed (p < 0.05) among groups; it was lowest (18.5 +/- 0.8 ml/kg per min) in those with coronary artery disease, intermediate (22.2 +/- 0.9 ml/kg/min) in older normal men and highest (25.6 +/- 1.3 ml/kg/min) in younger normal men. Percent peak treadmill oxygen consumption and heart rate with shoveling in the three groups ranged from 60% to 68% and 75% to 78%, respectively. Left ventricular ejection fraction and frequency of arrhythmias during shoveling were similar to those during treadmill testing.

CONCLUSIONS: During snow shoveling 1) the rate of energy expenditure selected varied in relation to each man's peak oxygen consumption; 2) older and younger normal men and asymptomatic men with coronary artery disease paced themselves at similar relative work intensities; 3) the work intensity selected represented hard work but was within commonly recommended criteria for aerobic exercise training; and 4) arrhythmias and left ventricular ejection fraction were similar to those associated with dynamic exercise.

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