chapter 4 Flashcards
american guidelines
-30 min or more of moderate intensity physical activity on most days a week
canadian guidelines
-150 minutes per week of moderate-vigorous physical activity in 10 min or more
measuring inactivity
accelerometers
how do we measure physical activity intensity practically
- modified borg scale
- talk test
how do we measure physical activity intensity physiologically
- resting metabolic rate= l kcal/kg/h = 1 met
- met + metabolic equivalent
adenosine triphosphate
ATP transports chemical energy within cells for metabolism
small motor unit has
few attachments
large motor unit has
many attachments
low intensity exercise activates
muscle fibers that specialize in oxidative metabolism (fatigue resistant)
low intensity exercise changes
- cholesterol profile
- high density lipoprotein (HDL)
- low density lipoprotein (LDL)
- glucose metabolism
- amount of energy you burn (uses ATP)
high density lipoprotein is
good
low density lipoprotein is
bad
cross sectional studies
- high fasting glucose(type 2 diabetes)
- low LDL cholesterol
- high blood pressure
- plasma triglyceride
- waist circumference/obesity
TV
- increase type 2 diabetes
- important behavior risk factor
- leisure time PA an waist circumference
high sedentary time leads to
- larger waist
- glucose tolerance
- triglycerides
prospective studies
- Canada fitness survey
- related to mortality
- those who are otherwise physically active
- overweight
sitting time affects
- blood pressure
- waist circumference
- mortality
(all cause cardio vascular)
researchers working on
- intervention studies
- how to break up sedentary time
- how to design neighbourhoods/ buildings
- public health interventions
- canadian society for exercise physiologists
primary and secondary improvements
primary: improve bp, weight reduction, decrease health probs
secondary: increased exercise, improved diet, improved sleep
why would employer care
a) research the benefits of PA
b) develop PA programs
c) demonstrate PA program adherence benefits
- lots of A but need more C
solution to getting public involved
- practical
- accessible
- doable
- sustainable
road blocks to getting public involved
- cost
- space
- resources
- productivity
what was the decrease in fine motor skills
6-11%
