Exercise II - IN Flashcards

1
Q

what is the equation for MAP

A

MAP = HR x SV x TPR = CO x TPR

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2
Q

why does MAP increase more during schiedo workouts (arms only) than during non-schiedo workouts (legs)

A

leg exercise results in vasodilation of large, active muscle groups and vasoconstriction in small, inactive muscle groups
arm exercise results in vasodilation in small, active muscle groups and vasoconstriction in large, inactive muscle groups

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3
Q

what increases blood pressure more, static or dynamic contractions

A

static, ie competitive weight lifting, also valsalva maneuvers can exacerbate the BP response

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4
Q

what provides the energy for muscle contraction anaerobically

A

stored ATP,
ADP + ADP –> ATP + AMP
creatine phosphate
glycolysis

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5
Q

what provides the energy for muscle contraction aerobically

A

carbohydrate, fatty acid and amino acid oxidation

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6
Q

when is anaerobically provided ATP most important

A

during transition period from one level of activity to a higher level
whenever exercise demands exceed anaerobic threshold of the individual

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7
Q

what is O2 deficit?

A

O2 deficit is transition pd going from rest to some sort of exercise, before ATP can be made aerobically

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8
Q

what is O2 debt?

A

O2 debt is post exercise, where youre repaying back the deficit you incurred during the transition period

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9
Q

what is the significance of the anaerobic threshold

A

anaerobic or lactate threshold - a target, bc you get most efficient results training at this threshold, and its a trainable phenomena bc anaerobic processes supplement the aerobic production during exercise

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10
Q

what does RER value during exercise depend on

A

exercise intensity, prior dietary history, exercise duration and fitness level

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11
Q

what happens to RER as exercise intensity is prolonged

A

decreases, a carbohydrate sparing effect

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12
Q

whats the deal with muscle glycogen

A

glycogenolysis rate increases exponentially as work rate increases
severe local muscle fatigue is apparent when muscles are depleted of their glycogen

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13
Q

what is the major determinant of muscle fatigue in skeletal muscle

A

glycogen depletion

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14
Q

who utilizes more fats, a fit or unfit person?

A

at any given exercise load, a fit person will utilize more fat than carbohydrates and have lower RER, which is a carb sparing effect

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15
Q

what determines the VO2 max

A

Vo2 max has a ceiling determined by your genetics, at some point you just cant get any better

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16
Q

VO2 max formula

A

Vo2 max is the product of maximal cardiac output and maximal (a-v) O2 difference

17
Q

what is the mechanism of max increases in VO2

A
maximal increase with aerobic training
training increase -> 
 inc capillary density
increase surface area, dec distance
stimulation of mytochondrial synthesis so you get a bigger gradient with more ATP produced
18
Q

what is RPP

A

rate pressure product

RPP = HR x systolic BP

19
Q

RPP is lower at any given work rate in fit vs unfit people, what are the consequences of this?

A

heart requires less oxygen, heart requires less blood flow, and basically heart operates more efficiently

20
Q

what are epi and norepi indicators of

A

stress

21
Q

how does the RPE scale work

A

rating of perceived exertion scale - each rating has a number and description and the number corresponds to a power of 10 less than what the heart rate should be at that level

22
Q

what happens when VO2 max levels off

A

endurance performance continues to increase with prolonged training in spite of this plateauing

23
Q

whats the best way to exercise to improve cardiorespiratory fitness

A

dynamic activity using large muscle groups, 3x-5x per week but not 7x, and 20-60 minutes per session excluding warm up and cool down