Obesity 3 Flashcards
sedentary habits have changed due to
modernization
increase in __ and __ jobs
increase in sedentary and less-labor intensive jobs
Freeway era
increased amount of time spent driving per day
more people now live in
suburban areas
MVPA =
moderate to vigorous physical activities
MVPA = __ MET-h/week
MVPA = 7.9-21.4 MET-h/week
MVPA has benefits on (6)
- hyperglycemia
- insulin and GLUT4
- hypertension in active people
- hypertension in sitting
- endothelium
- dyslipidemia
PA and pancreatic insulin release
PA increases pancreatic insulin release
muscle contraction = __ LPL activity, breaks down __ in blood
muscle contraction = increased LPL activity, breaks down FAs in blood
sedentary behavior ober time increases risk of __, __, and __
what type of relationship?
sedentary behavior ober time increases risk of diabetes, CVD, and mortality
what type of relationship? dose-dependent relationship
most ideal way to improve health outcomes
PA + frequent breaks (decrease sedentary time)
target sedentary time
< 9.5 hours
target sedentary bouts
intense
every 30 mins
as long as possible
type of exercise to prescrive
moderate to vigorous aerobic exercise 3-5 days per week 20-60 min
minimum length of PA episode
10 minutes
in a week you want __ minutes MVPA, __ days muscle strengthening
in a week you want 150-300 minutes MVPA, 2 days muscle strengthening
should we sacrifice sleep to exercise?
yes, but don’t sacrifice sleep for other things
limitations when researching PA
- large focus on TV viewing
- self reports
issues with self reports (4)
- Recall bias
- Reporting bias
- Unable to assess accrual patterns
- Poor validity
issues with PA recommendations (3)
- Epidemiological evidence for standing is mixed
- Acute laboratory evidence for standing also mixed
- Standing might not necessarily be good:
why may standing be bad?
- leads to blood pooling, changes venous pressure, increases atherosclerosis
- reduced plasma volume, increase HR, reduce shear stress in carotid artery
