Final exam Flashcards
What’s the difference between being sedentary vs inactive
Physical inactivity is described as not meeting specified guidelines or insufficient amounts where as sedentary behaviour is described as any waking moment that is being preformed with less then 1.5 mets
Physical activity requires a minimum of 1.5 Mets
What characterizes sedentary behaviour
Intensity - less then 1.5 METs
Posture - sitting or reclining
What is total energy expenditure and what is it composed of
How we burn/use energy
Basal metabolic rate
Diet thermogenesis
PA thermogenesis
What is non exercise energy expenditure (NEAT)
Includes the energy expenditure associated with posture fidgeting daily movements
Can be the largest component
How much time per day is spent in each category of EE
PA thermogenesis= 4h 11min
-3 hours 46mins= light activity
NEAT = 9hours and 48mins
What comprises our sedentary behaviour
Domestic (tv)
Occupational
Transportation
Health risks of sedentary behaviour
Metabolic syndrome Cardiovascular disease Type 2 diabetes Cancer All cause mortality Depression and anxiety
Health benefits of light activity
More frequent interruptions decreases BMI and waist circumference and post prandial
Research on physiological implications and sedentary behaviour
Tested bed rest patients
LPL activity = more sitting less LPL
2h of tv time = 23% increase in obesity
2h of work desk = 5% increase in obesity
What is lipoprotein lipase
LPL is a transport enzyme that takes lose fat to your muscles for energy
Sedentary behaviour obesity and cancer
Sitting causes weight gain
Can cause cancer
What do we know about sedentary behaviour and psychological outcomes
Adults who watch 42 hours a week of tv have a 31% higher chance of retaining a mental disorder
What is roses paradox
What may lead to a small change for an individual may lead to a large change across society
What is public health
Dealing with the protection and improvement of community health by organized community effort and including preventative medicine
What is the monetary reduction associated with small change in health risk factors of Manitobans
1% risk factor reduction = 210 million annual savings and 1.77 billion cumulative savings
2% risk factor reduction = 426 million annual savings and 3.85 billion cumulative savings
World wide how much does physical inactivity cost
Public
Private
Individuals
Public= 32.1
Private= 12.9
Individual= 9.7
(Billion)
What are the costs of physical inactivity in Canada for direct and indirect costs
Direct= 2.4 billion Indirect= 4.3 billion
Why is it important to know the costs of inactivity in Canada
Created public support for PA promotion
Prioritize funding accordingly
Convince people to take action
What evidence proves that promoting PA saves money
Katzmarzyk said if we treat PA as a prescription we can save money
Zheng did a study on Australians
- adults walking 30mins 5-7 days=7.2 decrease
- all walking 30 mins 5-7 days = 12% decrease
- all walking 60mins = 24% decrease
Why is the response to the costs not proportional to the problem
You can’t sell PA
No pharmacists will promote it
People are not patient
What is exercise dependence
A craving for leisure time physical activity resulting in uncontrollable excessive exercise behaviour
Why can’t we just rely on the time people spend exercising to know if they are dependent
You must have 3 or more of the criteria because you face commitment vs problematic
Those who are training or athletes are not necessarily dependent because they do not have a problem
What is the criteria for exercise dependence
Tolerance Withdrawal Intention Loss of control Time Conflict Continuance
How was exercise dependence discovered
Barkeland in 1970 did a study that no runners wanted to do because it meant they had to stop running and those who did participate showed withdrawal symptoms