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PTI 3 - Final > Effects of Aerobic Exercise - Class 6 > Flashcards

Effects of Aerobic Exercise - Class 6 Flashcards

1
Q

pressor response

A

sympathetic nervous system from stimulation of myelinated and unmyelinated nerves in exercising muscles

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2
Q

physiological effects

A

pressor response

cardiac effects

net reduction in total peripheral resistance

increased CO and systolic BP

rapid changes in respiratory rate*

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3
Q

there is –> pressor response

A

generalized vasoconstriction in non exercising muscles

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4
Q

there is increased –> pressor response

A

myocardial contractility

heart rate

systolic BP

results in marked increase in CO

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5
Q

cardiac effects –> increase

A

frequency of SA node depolarization

force development of cardiac myofibers

SNS stimulation

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6
Q

cardiac effects –> decrease

A

vagal stimuli

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7
Q

net reduction in total peripheral resistance is d/t

A

locally mediated reduction in resistance of arterial bed of working muscle(s)

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8
Q

what is the decreased resistance caused by –> net reduction in total peripheral resistance

A

metabolites –> independent of ANS stimulation

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9
Q

veins of working and non-working muscle –> net reduction in total peripheral resistance

A

remained constricted

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10
Q

rapid changes in respiratory rate

A

even before initiation of exercise

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11
Q

alveolar respiration –> rapid changes in respiratory rate

A

increased up to 10-20 fold during intense exercise

–> to supply additional O2 needed and excrete excess CO2 produced by exercise

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12
Q

additional O2 to muscles

A

increased blood flow and oxygen extraction

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13
Q

increased oxygen extraction

A

decreased of PO2

CO2 production

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14
Q

decreased PO2 –> increased oxygen extraction

A

occurs secondary to use in working muscle(s)

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15
Q

CO2 production –> increased oxygen extraction

A

causes tissue to become acidotic

tissue temp increase –> causing a right shift and dissociating more O2

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16
Q

determinants of aerobic exercise program

A

frequency

intensity

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17
Q

frequency

A

no clear cut info on optimal frequency

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18
Q

general guidelines –> frequency

A

3-4 times a week

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19
Q

ACSM PA guidelines –> frequency

A

150 minutes of moderate intensity exercise activity every week

30 min 5 days a week

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20
Q

intensity

A

overload principle applies

21
Q

when does conditioning response generally occur –> intensity

A

60-90% maximum HR

50-85% VO2 max

22
Q

for healthy young individuals –> intensity

A

70% HR max

23
Q

for deconditioned individuals –> intensity

A

50% HR max

24
Q

in young healthy individuals

A

intensity can be determined in a variety of ways

25
Q

determining intensity for a healthy young individual

A

maximum performs multistage stress test

extrapolated from max HR on submaximal test

220-age is less accurate estimate

26
Q

determine target exercise HR

A

% range of estimated or measured HR max

karvonen equation

27
Q

karvonen equation

A

Exercise HR = HR(rest) + 60-70% (HR max - HR rest)

28
Q

how long should we exercise at 60-70% of HR max

A

20-30 min

29
Q

lower intensity likely require

A

longer sessions

30
Q

what would a deconditioned individual benefit from

A

multiple smaller sessions throughout the day

31
Q

numerous exercise types

A

elicit stimulus and training response

32
Q

what is most important –> elicit stimulus and training response

A

that large muscle groups are worked in rhythmic aerobic fashion

33
Q

what needs to be planned –> elicit stimulus and training response

A

to meet needs and capacity of the pt

34
Q

reversibility

A

occurs rapidly

35
Q

when are reductions in work capacity measured

A

after 2 weeks of detraining

36
Q

improvements will be lost

A

in several months

37
Q

reversibility

A

amount required to maintain significantly less than required to improve

38
Q

when are physiological responses seen

A

at rest

39
Q

physiological responses (1)

A

decreased HR and BP

increased hemoglobin and blood volume

larger long volumes and diffusion capacities

muscle hypertrophy and increase capillary density

40
Q

physiological responses (2)

A

increased number and size of mitochondria

increases engagement socially

decreases threat of associated pain

41
Q

appropriately dosed exercise –> physiological responses

A

may elicit exercise induced hyperalgesia

42
Q

majority of Americans ages 18-64

A

do not meet recommended activity guidelines

43
Q

most of our pts

A

not regularly active

44
Q

what should we recommend

A

easy movements

45
Q

how should we disguise aerobic exercise

A

as a warm up

46
Q

what should we educate

A

incorporation into everyday activities

47
Q

make recommendations on

A

ways to begin increasing activity

stress it is not a 0 sum equation –> some is always better than none

48
Q

what should we leverage

A

additional benefits of CV exercise

49
Q

monitoriing progress/response

A

HR response

distance

work

RPE

HR recovery time

BP

PTI 3 - Final (11 decks)

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