Post on 16-Aug-2015
Physical Activity & Sedentary BehaviourPhysical Activity (PA): Any
movement of the body produced by skeletal muscles, resulting in energy expenditure
Sedentary Behaviour (SB): involves activities requiring little or no movement.
Dimensions of PAType: What the activity is
Frequency: How many times per week the activity is undertaken
Duration: how long the activity goes for per day or week
Intensity: the effort placed into the activity
Low: can sing while being active <50%MHR
Moderate: can carry a conversation 50-70% MHR
Vigorous: cannot talk 70-85% MHR
METsMetabolic Equivalent
Measure of intensity
1 MET is generally sedentary
3-4 METs is moderate intensity PA
6+ METs is vigorous intensity
Physical Benefits of PA
Reduce risk of…
CV Disease
Stroke
Type 2 Diabetes
High BP
Colon and other cancers
Osteoporosis
Can assist to:
Build & maintain healthy bones, muscles & joints
Improve posture
Achieve & maintain healthy body weight
Protect against musculoskeletal injuries in children
Lower blood cholesterol and triglycerides
Increase good cholesterol
Keep older adults physically strong and prevent fatigue
Physical Benefits of PA
Social Benefits of PAMake new friends
Strengthen existing relationships
Provide opportunities for social interaction
Build community support networks
Reduce social isolation & exclusion
Reduce workplace absence due to illness
Increase independence in older adults
Mental Benefits of PA
Improved mood
Reduce incidence of depression, anxiety & stress
Improved self-esteem
Improved ability for people with chronic illness to participate in daily activities
Improved sleep
Greater energy
Improved perception of self & identity
Improved cognitive function
Physical Inactivity & SB Health Risks
Overweight & Obesity
Type 2 Diabetes
Hypertension
High Cholesterol
Cardiovascular Disease
Overweight & ObesityOverweight is a
condition of excess body fat resulting from energy imbalance. BMI 25-29%
Obesity is a result of increased energy consumption and decreased PA over a long period of time. BMI 30% >
Type 2 DiabetesDiabetes is a disease that causes high blood-glucose levels
People do not produce insulin or it does not work effectively
Type 2 Diabetes means the person is insulin resistant
High CholesterolCholesterol is a fat-like, waxy substance found in body cells
High-density lipoprotein (HDL): carry cholesterol in the blood to the liver to be removed (GOOD)
Low-density lipoprotein (LDL): carry most of the cholesterol in the blood but cause fatty deposits on artery walls (BAD)
Triglycerides: found in the blood and stored in fat cells, high levels increase risk of heart disease
High cholesterol narrows arteries making the heart work harder