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Reprinted with permission of American College of Sports Medicine 1993, Sports Medecine Bulletin, 28:4, p. 7, 1993, "CDC/ACSM Summary Statement Worshop On Physical Activity and Public Health."
"CDC / ACSM SUMMARY STATEMENT WORKSHOP ON
PHYSICAL ACTIVITY AND PUBLIC HEALTH"
Sponsored By:
U.S. Centers for Disease Control and Prevention and American College of Sports Medicine In Cooperation with the President's Council on Physical Fitness and Sports
Regular physical activity is an important component of a healthy lifestyle - preventing disease and enhancing health and quality of life. A persuasive body of scientific evidence, which has accumulated over the past several decades, indicates that regular, moderate-intensity physical activity confers substantial health benefits. Because of this evidence, the U.S. Public Health Service has identified increased physical activity as a priority in Healthy People 2000, our national health objectives for the year 2000. A primary benefit of regular physical activity is protection against coronary heart disease. In addition, physical activity appears to provide some protection against several other chronic diseases such as adult-onset diabetes, hypertension, certain cancers, osteoporosis and depression. Furthermore, on average, physically active people outlive inactive people, even if they start their activity late in life. It is estimated that more than 250,000 deaths per year in the U.S. can be attributed to lack of regular physical activity, a number comparable to the deaths attributed to other chronic disease risk factors such as obesity, high blood pressure, and elevated blood cholesterol.
Despite the recognized value of physical activity, few Americans are regularly active. Only 22% of adults engage in leisure time physical activity at the level recommended for health benefits in Healthy People 2000. Fully 24% of adult Americans are completely sedentary and are badly in need of more physical activity. The remaining 54% are inadequately active and they too would benefit from more physical activity. Participation in regular physical activity appears to have gradually increased during the 1960s, 1970s and early 1980s, but has plateaued in recent years. Among ethnic minority populations, older persons, and those with lower incomes or levels of education, participation in regular physical activity has remained consistently low.
Why are so few Americans physically active? Perhaps one answer is that previous public health efforts to promote physical activity have overemphasized the importance of high-intensity exercise. The current low rate of participation may be explained, in part, by the perception of many people that they must engage in vigorous, continuous exercise to reap health benefits. Actually the scientific evidence clearly demonstrates that regular, moderate-intensity physical activity provides substantial health benefits. A group of experts brought together by the U.S. Centers for Disease Control and Prevention (CDC) and the American College of Sports Medicine (ACSM) reviewed the pertinent scientific evidence and formulated the following recommendation:
Every American adult should accumulate 30 minutes or more of moderate intensity physical activity over the course of most days of the week. Incorporating more activity into the daily routine is an effective way to improve health. Activities that can contribute to the 30-minute total include walking up stairs (instead of taking the elevator), gardening, raking leaves, dancing, and walking part or all of the way to or from work. The recommended 30 minutes of physical activity may also come from planned exercise or recreation such as jogging, playing tennis, swimming, and cycling. One specific way to meet the standard is to walk two miles briskly.
Because most adult Americans fail to meet this recommended level of moderate-intensity physical activity, almost all should strive to increase their participation in moderate or vigorous physical activity. Persons who currently do not engage in regular physical activity should begin by incorporating a few minutes of increased activity into their day, building up gradually to 30 minutes of additional physical activity. Those who are irregularly active should strive to adopt a more consistent pattern of activity. Regular participation in physical activities that develop and maintain muscular strength and joint flexibility is also recommended.
This recommendation has been developed to emphasize the important health benefits of moderate physical activity. But recognizing the benefits of physical activity is only part of the solution to this important public health problem. Today's high-tech society entices people to be inactive. Cars, television, and labor-saving devices have profoundly changed the way many people perform their jobs, take care of their homes, and use their leisure time. Furthermore, our surroundings often present significant barriers to participation in physical activity. Walking to the corner store proves difficult if there are no sidewalks; riding a bicycle to work is not an option unless safe bike lanes or paths are available.
Many Americans will not change their lifestyles until the environmental and social barriers to physical activity are reduced or eliminated. Individuals can help to overcome these barriers by modifying their own lifestyles and by encouraging family members and friends to become more active. In addition, local, state and federal public health agencies; recreation boards; school groups; professional organizations; and fitness and sports organizations should work together to disseminate this critical public health message and to promote national, community, worksite, and school programs that help Americans become more physically active.
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Last updated 1996.01.29.
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