9/24b Evidence for Aerobic Training (Examination, Evaluation, Intervention)

Question 1

exercise prescriptions

Answer 1

• intensity
• duration
• frequency
• mode

Question 2

recommended training intensities

Answer 2

60-90% of HR max

50-85% of Heart Rate Reserve (HRR) or VO2max

Question 3

how do you prescribe exercise to a patient?

Answer 3

• determine where the patient is starting
• understand the patient’s vital signs
• what is the patient’s medical state?
• what are the risk factors for the patient?

Question 4

to get the HR max or HR reserve do teh following:

Answer 4

1. %HRmax from stress test prediction equations
2. HRR - karvonen method {(HRmax - HRrest)*x%}+HRrest)
3. lastly do 220 - age

Question 5

how do you measure intensity?

Answer 5

1. Rating of perceived exertion (RPE) - overall feelings, body fatigue, heaviness, HR (6-20 scale)
2. Borg Modified RPE (0-10 scale)
3. PAG scale (doesn’t match up with 1 and 2)

NONE OF THE ABOVE ARE INTERCHANGEABLE

Question 6

would you use borg scale or PAG scale?

Answer 6

lean towards the Borg scale more often than the PAG scale

Question 7

%VO2 max importance

Answer 7

defines oxygen consumption, thus energy production and utilization in the muscle cell

Question 8

what is %VO2 max affected by?

Answer 8

• Mode: treadmill > cycle > arm crank (B/c more utilization of muscle mass)
• Heredity: 20-30%
• Sex: men>women
• Body size and composition
• Age: decreases with age

Question 9

how do we assess aerobic capacity?

Answer 9

• measure maximal oxygen uptake

- graded stress test - GXT

Question 10

VO2 max graphically represented looks like what?

Answer 10

VO2 linearly increases with work rate until a point of plateau that is dependent on your aerobic capacity as a whole.
The plateau is the VO2max
The VO2peak is the limit the patient can get up to at the time when they give up

Question 11

what is APMHR

Answer 11

age predicted maximum heart rate

Question 12

what is R

Answer 12

R = CO2 produced / CO2 consumed

Question 13

how do we make this process clinically applicable instead of completing a really complex stress test?

Answer 13

• VO2 reported at L/min or mL/min
• VO2 can be normalized to body weight VO2/kg - ml/kg/min
• Social security administration criterion of disability of a peak VO2 <= 18 mL/kg/min
• convert mL/kg/min to METS

Question 14

submaximal tests

Answer 14

• linear relationship between HR and VO2 (oxygen consumption)
• 1:1 when doing VO2 max and sub max HR
• anything that affects HR will affect your prediction
• tests all assume that conditions are the same for all patients (which is not true!)

Question 15

duration and frequency of training

Answer 15

• 20 minutes = minimum duration
• frequency = can be completed every day
• -studies typically show 2-3 days a week because it is more cost effective to test
• -the more that is done, the larger the effects

Question 16

Types of training

Answer 16

• interval training: recovery is still above rest so average HR is in moderate training zone (use for deconditioned older adults)
• continuous/steady state training: built to gradually complete goal, oxygen debt - increased oxygen