Ch. 12: Physical Activity and Treatment of Obesity (Read Ch. 13 next)
Measurement types: How do we measure it?
Waist Circumference : >102 men >88 cm for women
BMI: >30 Obese
Dexa (Includes bone density), bioelectrical (%)
Waist to hip ratio, < .8
Ch. 11 Continued + Ch. 12
Post exercise hypotension
Resistance vs. endurance
BP higher during resistance exercises
During recovery time, below baseline pressure
Decrease up to 4 hours, allows arteries to relax from being slammed with pressure all day.
CHD/Stroke and Occupation
Which jobs do you think have the highest occurrences?
Lawyers, teachers, emergency response
Out of these which do you think would have the highest risk?
Food service, scientist/researcher, teacher, construction workers
Dose Response Issues
Health Benefits of PA:
Term used to represent the characteristics of the activity.
Frequency, duration, intensity, type and volume.
Increasing dose is generally beneficial- beginning does have challenges, but
Review ch. 6 (ch. 22 next week)
ATP= Energy source for movement-muscular Contraction
Anaerobic vs Aerobic (pg. 72)
Doesnt use oxygen vs. does
Oxygen Consumption- VO2.
Rest-to-exercise (O2 deficit pg.74)
Steady State VO2
Bld Lactate >8m
Physical Activity, Sedentary behavior, fitness,
and all cause of mortality
Words to know:
PA- all movement requiring contraction of muscles that expends energy
Sedentary Behavior- inactivity that expends resting levels of energy expenditure
Physical Activity Guidelines Past and Present
Why would we have national objectives?
-Epidemiology, where are the higher areas of risk?
-Guidelines are based on research
-Minimums- not necessarily all you should strive for. The mini
PA levels are highest in childhood and decrease through adolescence and into adulthood.
Result of complex changes in psychological and social factors that occur with age
Varying cultural beliefs
1 pound of fat= 3500 kc
Galen Video Reflection Surgical tools pretty unchanged, he had his own set from steel,
cataract removal back then by sucking it out through the hollow needle, a lot of the people he
did surgery on including gladiators survived, common us
Physical Activityand Disease
Designed for Activity:
We had to be physically active in order to survive the elements.
A History of Exercise & Physical Activity
The evolution of the brain meant not only greater brain capacity, progressive mastery of