Aerobic vs anaerobic metabolism/ex testing capacity Flashcards
What is by product of Anaerobic Metabolism
lactic acid
What does Anaerobic metabolism utilize for fuel
glucose
What does Aerobic metabolism utilize for fuel
carbs, fats, protein
What is a by product of Aerobic metabolism?
water and co2
What produces more ATP Anaerobic or aerobic per glucose molecule?
aerobic 36
anaerobic 2
What is the gold standard for measuring oxygen consumption ?
V02
How is Vo2 measured?
CO (cardiac output) x a-v 02 difference
At what percent of max vo2 does aerobic threshold occur?
55% of vo2 max
1 met =?
3.5 ml 02/kg
DO mets increase with activity?
YEs
Define Met?
the energy (oxygen) used by the body as you sit quietly, perhaps while talking on the phone or reading a book.
What MET is considered mod intensity exercise?
3-6 mets
How many METS is considered vigorous intensity ?
> 6 mets
What factors affect peak Vo2?
Age, sex, genetics, body composition, endurance training, disease (like COPD)
T or F Reduced physical activity and increased fat mass with age may account for as much as 50% of the “age related” decline in (VO2) men and women.”
True
Social Security Administration uses the criteria that ____ mets is considered disabled.
<5 or 3.5x5= 17.5 vo2 max
For persons with CAD, risk of complication such as MI or death is __ to ___ times greater during exercise testing then during usual activity
60 to 100 times greater
T or F. Actual risk of death during exercise testing is very High for CAD patients?
False, it is a low risk due to appropriate screening and adherence to established methods of conducting the tests
What is the Standardized Procedures
for sub max testing?
1) Explanation of procedure
2) Avoid maximal activity for 24 hours prior
3) Avoid for 2-3 hours prior ◦large meal
◦ Nicotine ◦ Caffeine
4) Repeat submax test
Is the Following an Endurance Test?
65 y/o female with a history of moderate to severe COPD
◦ If you take resting HR, BP, RPE, and RR ◦ Have her ambulate down the hall 100 feet ◦ Time how long this takes
◦ And record post HR, BP, RPE, and RR
◦ Is this an endurance test?
Yes
General Guidelines for submit test?
- Warm-up: 2-3 min
- Measure HR, BP, RPE at regular intervals
◦ End of each stage [HR, BP, RPE] or every minute [HR]
◦ If HR does not reach steady state during the stage, then extend
stage 1 minute - Increase intensity in 0.5 to 2 MET increments
- Closely observe subject for signs/symptoms
- Cool-down: low intensity for ≥4 min
◦ Continue measuring HR, BP and RPE
it has been suggested that submaximal exercise testing underestimates VO2 Max in the ________ and ________ in the trained.
Underestimates for untrained, overestimates for trained.
5 Submax Test Assumptions?
- A steady-state HR is obtained for each exercise work rate
- A maximal HR for a given age is uniform (220 –age)
- Mechanical efficiency (i.e., VO2 at a given work rate) is the
same for everyone. - There is a linear relationship between HR and workload.
- HR will vary depending on fitness level between subjects at any given workload.
Advantages of Submax Testing?
- Safer
- Controlled pace (motivation not a factor)
- Not population specific (no pacing advantage)
- Quick assessment
- Costeffective
- Do not need highly trained personnel
- Can do mass testing
- No physician supervision required (if symptom and disease free)
