Term
| Why do we test aerobic fitness? (4) |
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Definition
| To determine fitness (for public health), for job screening (ie: firefighter), to predict performance, and to determine appropriate exercise prescription both in athletic and clinical settings. |
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Term
| What major components affect aerobic performance? (3) |
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Definition
| VO2 Max, Lactate Threshold, Movement economy. |
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Term
| If you move very accurately, what do you improve? |
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Definition
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Term
| There are several types of tests; maximal, submaximal, laboratory and field. The type of test we choose depends on three major things. What are they? |
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Definition
| Initial fitness ofthe subject, The purpose of the test, and the facilities (equipment, personnel) |
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Term
| When predicting performance in a group of athletes with similar VO2 Maxes, what is a better predictor than VO2Max? |
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Definition
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Term
| What type of activity with the person with a high VO2max perform best at? |
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Definition
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Term
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Definition
| A plateau in the VO2 even with increasing exercise intensity. |
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Term
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Definition
| The highest VO2 attained. |
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Term
| What are the secondary criteria to determine VO2max?(3) |
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Definition
| 1. RER>1.1, 2. HRmax 10bpm from predicted, 3. Blood lactate level of .8mmol/L. |
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Term
| What is the only real proof that true VO2max has been attained? |
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Definition
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Term
| How long should a VO2max test last? |
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Definition
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Term
| How long should the stages last when testing VO2Max? |
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Definition
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Term
| What can happen if the stage duration in VO2max testing is too long or too short? |
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Definition
| Muscles can be fatigued in a way that is unrelated to O2 uptake. |
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Term
| The stage duration can't be too long when testing VO2 max, but it does have to be long enough to _____ what? |
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Definition
| Reach steady state in each stage. |
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Term
| What is the best mode of exercise performance if testing a patient who is unfamiliar with activity? |
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Definition
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Term
| Why can you encounter error when using HR to determine VO2max? |
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Definition
| Because HR is affected by arousal, hydration and the type of exercise. There is also individual variability in tolerance due to motivation, muscle strength and power, and anaerobic capacity. |
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Term
| What is the relationship of work and VO2? |
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Definition
| they have a linear relationship. |
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Term
| What is a symptom-limited maximal test? these are especially useful in what patient population? |
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Definition
| When the patient begins to feel symptoms (ie:chest pain or other abnormalities) the test is stopped. Otherwise, the patient carries on to their max. These tests are useful in the cardiac patient population because it is limited by physiological symptoms for safety. |
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Term
| Describe how a submaximal VO2 test works. |
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Definition
| You only let the subject work to a certain HR or predicted VO2, even if they could go further. |
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Term
| In what patient population would you be most likely to use a submaximal aerobic capacity test with? Why? |
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Definition
| In very unfit populations, so people don't hurt themselves, or if you don't have appropriate safety equipment in case of emergency. |
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Term
| VO2 at the lactate threshold is the best predictor for performance on runs of what distance? |
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Definition
| Long distance; >1500m (also, long distance cycling. |
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Term
| Why might using the ventilatory threshold be prefereable to lactate threshold for VO2max estimation? |
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Definition
| Because you get similar results to LT when using VT, as the relationships to VO2 are similar. However, VT is easier to get because it avoids sequential blood draws. |
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Term
| If all else is equal, a higher movement economy relates to ____ VO2max |
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Definition
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Term
| If you have poor movement economy, what do you need to have in order to compete with someone who has good movement economy? |
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Definition
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Term
| Movement economy explanation. (not a question. just flip the card :) |
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Definition
| Two people running at the same speed may have very different VO2 maxes, even though the work load is the same between the two people. This is because of the biomechanics each person employs to complete the activity. Experienced runners will have a lower VO2 at the same movement than someone who is not, because they have a good pattern of movement --> better movement economy --> higher VO2max than the person who is flopping their arms all over the place and using their body for momentum. |
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Term
| How long does a maximal VO2 test last? |
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Definition
| As long as it needs to last to get you to a point where you can't go any more. |
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Term
| Tests like the bruce protocol use large work increments between stages. ie: difference between work at stage 1 and stage two is large. How does this impact the length of the stage? |
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Definition
| The stages must be longer to allow the subject to reach steady state. |
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Term
| Describe the size of increments and length of stage in the BALKE protocol. |
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Definition
| Tiny increment increases, and short stages (each lasts less than one minute). |
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Term
| If you wanted to test a cardiac patient, would you choose to use the Bruce, or the BALKE protocol? |
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Definition
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Term
| If patient A has a lower VO2 when running at the same velocity as patient B, what can you assume about their movement economies? |
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Definition
| Patient A has a better movement economy than patient B. |
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Term
| If you're looking at a graph of VO2 over running velocity, and patient A's slope is higher than patient B's, what does that tell you about their movement EFFICIENCIES? |
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Definition
| Patient A has a worse movement efficiency because the slope is higher. Lower slope = better movement effiency.(The change in oxygen consumption for the same increase in workload is lower, which makes person B more efficient than person A). |
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Term
| Can a person have good movement efficiency and poor movement economy? |
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Definition
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