Related Experiment Video
Updated: Feb 24, 2026

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
A Framework for Physical Activity Policy Research
Background:
Although policy approaches are traditionally an important element of public health efforts to address major health problems, public health policy around physical activity remains poorly defined and developed.
Methods:
After extensive literature searches and reviews of policy frameworks developed for other public health issues such as tobacco control and injury prevention, the Centers for Disease Control and Prevention hosted a series of workshops and discussions on physical activity policy.
Results:
A simple model describing relationships among policy, the environment, behavior, and health was developed, a framework for organizing and conceptualizing policy interventions was described, and priorities for public health efforts to promote physical activity were proposed.
Conclusions:
An expanded focus on physical activity policy interventions is warranted, and such efforts can complement physical activity promotion efforts at other levels. The addition of researchers with expertise in the policy sciences will enhance the work of existing multidisciplinary teams.
Related Concept Videos
Models of Health Promotion and Illness Prevention II
The agent-host-environment model states that disease results...
Models of Health Promotion and Illness Prevention I
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
Levels of Health Promotion and Illness Prevention
In primary prevention, actions taken before disease onset prevent the disease from...
Factors Affecting Activity Coefficient
The activity coefficient value for an ion is close to one when the solution has almost zero ionic strength, i.e., when the solution shows close to ideal behavior. As the ionic strength of the solution increases from 0 to 0.1 mol/L, a...

