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Walking in the Prevention of Coronary Heart Disease PowerPoint PPT Presentation


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Walking in the Prevention of Coronary Heart Disease. Prepared by Don Hall, DrPH, CHES A Presentation of LifeLong Health. Physical Activity Level and Risk of Heart Attack. Relative Risk. Nurses Health Study, 72,488 women followed for 8 years

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Walking in the Prevention of Coronary Heart Disease

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Walking in the prevention of coronary heart disease l.jpg

Walking in the Prevention of Coronary Heart Disease

Prepared by

Don Hall, DrPH, CHES

A Presentation of LifeLong Health


Physical activity level and risk of heart attack l.jpg

Physical Activity Level and Risk of Heart Attack

Relative Risk

  • Nurses Health Study, 72,488 women followed for 8 years

  • The risk of heart attack decreased with increasing levels of physical activity

  • Heart attack risk dropped over 50% in the most active women (top 20% compared to bottom 20%)

NEJM, p.650, Aug. 26, ‘99

Little activity High activity


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Relative Risk of Heart Attack by Quintile of Physical Activity and Smoking Status

Relative Risk

Least activeMost active

Physical Activity Level

NEJM, Aug. 26, ‘99


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Relative Risk of Heart Attack by Quintile of Physical Activity and Body Mass Index

Relative Risk

Least activeMost active

Physical Activity Level

NEJM, Aug. 26, ‘99


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Relative Risk of Heart Attack by Quintile of Physical Activity and Family History of CHD

Relative Risk

Least activeMost active

Physical Activity Level

NEJM, Aug. 26, ‘99


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Walking Pace and Relative Risk of a Heart Attack

  • Walking pace was another important determinant of risk of heart attack

    • Women who walked at a moderate pace reduced risk by 25%

    • Women who walked briskly reduced risk by 36%

NEJM, Aug. 26, ‘99


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Summary

  • In this study, the reduction in risk of heart attack from brisk walking or vigorous activity were similar when total energy expenditures were similar

  • Women who walk briskly for 3 or more hours per week can reduce their risk of a heart attack by 30 to 40%

  • The researchers concluded that, “one-third of coronary events (heart attacks) among middle-aged women in the United States are attributable to physical inactivity”

NEJM, Aug. 26, ‘99


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Walking is Good Medicine

When the weather will permit, all who can possibly do so ought to walk in the open air every day, summer and winter.

A walk, even in winter, would be more beneficial to the health than all medicine the doctors may prescribe.

E.G. White, Counsels on Health, page 53, 1870


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