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Lecture 6

Health Sciences 1001A/B Lecture Notes - Lecture 6: Coronary Artery Disease, Cardiorespiratory Fitness, Cardiovascular Disease

Health Sciences
Course Code
HS 1001A/B
Shauna Burke

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Chapter 6:
Physical Activity: any bodily movement produced by skeletal muscles that requires
energy expenditure
Scientists have studies the effects on health and functioning for the past 40
Found to be the most important action for improving wellness
oPsychological Benefits:
Decrease state and trait anxiety
Decrease depression
Increased cognitive functioning
Increased self-esteem
Increased mood states
Improved reactivity to stressors
oPhysiological Benefits
Increase bone and functional health
Increase muscular and cardiorespiratory fitness
Decrease risk of hypertension, coronary heart disease, stroke, diabetes,
breast and colon cancer
Decrease risk of falls and hip or vertebral factures
Weight control and energy balance
oConsequences of Inactivity
Inactivity increases the incidence of at least 17 unhealthy conditions
Coronary heart disease
Type 2 diabetes
Some cancers
oCanadian Physical Activity Guidelines
18-64 accumulate 150 mins moderate to vigorous activity a week in bouts
of 10 or more minutes
Add muscle and bone strengthening activities using major muscle groups
at least 2 days a week
Adherence: sticking to or faithfully conforming to a standard of behaviour in order to
meet some goal
Prevalence of Physical Activity
o~47% of Canadian adults are inactive (55% men, 51% women)
oGlobally, at least 1 in 4 adults fails to achieve the minimum recommendation of
daily physical activity
oUniversity Students - ~50% of north American university students are
insufficiently active
o~20-50% adults who begin an exercise withdraw within 1st 6 months
Sedentary Behaviour: any waking sitting or lying behaviour with low energy expenditure
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