Related Experiment Video
Updated: Jul 8, 2026
05:59
Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity
Published on: March 7, 2019
Research that informs Canada's physical activity guides: an introduction.
Mark S Tremblay1, Roy J Shephard, Lawrence R Brawley
1Children's Hospital of Eastern Ontario Research Institute, Tunney's Pasture, Ottawa, Canada. mark.tremblay@statcan.ca
Summary
Canada
Area of Science:
- Physical activity sciences encompassing basic science, behavioral assessment, dose-response, epidemiology, health messaging, and measurement.
Background:
- Canada's first physical activity guides for adults (1998), older adults (1999), and children/youth (2002) were released by the Canadian Society for Exercise Physiology (CSEP).
- Significant advancements in physical activity research have occurred since the initial guideline publications.
Purpose of the Study:
- To conduct a comprehensive review of current physical activity research.
- To determine if existing Canadian physical activity guidelines and guides require revision or renewal based on recent scientific evidence.
Main Methods:
- A detailed review of current research in physical activity sciences.
- Chronological overview of events leading to the preparation of the journal supplement.
- Discussion of the purpose, intended outcomes, and surveillance relationship of physical activity guidelines.
Main Results:
- The rapid advancement of physical activity sciences necessitates an updated review of existing guidelines.
- The current body of research will be assessed to inform potential revisions to Canada's physical activity guides.
Conclusions:
- A thorough re-evaluation of physical activity guidelines is warranted due to scientific progress.
- This introductory paper sets the context for subsequent papers that will detail the review findings and recommendations for guideline renewal.
Related Concept Videos
01:27Exercise and Muscle Performance
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
01:20Exercise and Cardiovascular Response
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
02:59Cancer Prevention
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
01:18Models of Health Promotion and Illness Prevention II
The person's health status fluctuates continually, varying from being in good health to becoming ill and returning to being healthy. To understand the concept of illness prevention, there are two models. First, the health-illness continuum model is a graphic representation of an individual's wellness. It states that a person is considered healthy in the absence of physical disease and the presence of good emotional health.
The agent-host-environment model states that disease results from...
The agent-host-environment model states that disease results from...
01:25Models of Health Promotion and Illness Prevention I
A model is a theoretical way to understand a concept or an idea. Models can overcome barriers to health regardless of diverse economic and cultural backgrounds. In addition, models make the task easier by providing different ways to approach complex issues. There are two major health promotion models: the health belief model and the health promotion model.
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
The health belief model (HBM) attempts to predict health-related behavior in specific belief patterns. According to the HBM, a person's...
01:26Levels of Health Promotion and Illness Prevention
Health promotion allows a person to control the determinants of health, resulting in an improved health status. It enhances the quality of life and reduces premature deaths. Health promotion and illness prevention programs help people make beneficial choices to reduce the risk of disease and disabilities. There are three health promotion and illness prevention levels: primary, secondary, and tertiary prevention.
In primary prevention, actions taken before disease onset prevent the disease from...
In primary prevention, actions taken before disease onset prevent the disease from...