Effect of age and coronary artery disease on response to snow shoveling.
J Am Coll Cardiol
; 20(5): 1111-7, 1992 Nov 01.
Article
em En
| MEDLINE
| ID: mdl-1401611
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.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Neve
/
Envelhecimento
/
Doença das Coronárias
/
Esforço Físico
Limite:
Adult
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
1992
Tipo de documento:
Article