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A recent review of the results of more than 60 observational, epidemiological studies of physical activity and breast cancer concluded that physically active women have a lower risk of developing breast cancer than sedentary women (Physical Activity Guidelines Advisory Committee 2008). A systematic review of case–control studies of recreational activity and breast cancer risk estimated that each additional hour of physical activity per week reduced risk of postmenopausal breast cancer by 6% ...
Explore the public health implications of physical activity with Physical Activity Epidemiology, Second Edition. Hence, age modifies the effect of physical activity for reducing mortality risk. The potential for confounding and effect modification increases the difficulty of interpreting epidemiologic studies of the direct effects of physical activity on health.
Likewise, the scientific advisory committee for the 2008 Physical Activity Guidelines for Americans recognized that recommendations about the amount of physical activity needed for weight maintenance, weight loss, or prevention of weight regain after weight loss must allow for energy intake. Evidence shows that regular physical activity or physical fitness can (1) reduce health risks in people who are overweight, (2) protect against excessive weight gain, (3) help overweight and obese people...
Explore the public health implications of physical activity with Physical Activity Epidemiology, Second Edition. Several personal factors are targets of interventions to increase physical activity because they are potential mediators of people’s behavioral choices regarding physical activity. Nonetheless, physical activity on the job still contributes to overall physical activity.
