Final answer:
The goal to increase regular moderate physical activity in adults is related to a public health objective, designed to improve health and reduce chronic disease risks as recommended by the 2018 Physical Activity Guidelines for Americans.
Step-by-step explanation:
The goal to increase from 15% to 30% the proportion of adults who engage regularly in moderate physical activity for at least 30 minutes per day is an example of a public health objective. It is aligned with the recommendations put forth by the 2018 Physical Activity Guidelines for Americans, issued by the Department of Health and Human Services. These guidelines advise that for substantial health benefits, adults should engage in at least 150 minutes of moderate-intensity aerobic activity per week, which can lead to the improvement of health and a reduction in chronic disease risk. Additionally, the guidelines recommend muscle-strengthening activities of at least moderate intensity involving all major muscle groups on two or more days per week. Evidence-based Physical Activity Recommendations state that such an increase in physical activity levels can significantly lower the risk of various health conditions including heart disease, stroke, and Type 2 diabetes, and also improve mental health and cognitive function. Therefore, by advocating for an increase in the proportion of adults who exercise regularly, public health officials are aiming to foster a population that experiences fewer health-related issues and enjoys a better quality of life.