421 Final: PA Benefits/Recommendations Flashcards Preview

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Flashcards in 421 Final: PA Benefits/Recommendations Deck (15)
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0
Q

Harvard Alumni 1986 (before redesign)

A

Expending > 2000 kcals/week in leisure PA extends lifespan

  • the more PA done = dec. risk
  • too much of a good thing = negative
  • doesn’t account for change in BEH, SUB
1
Q

Harvard Alumni Study 1993 (after redesign)

A
  • account for change in BEH, SUB
  • PA at one point is better than none
  • unfit to fit = greatest dec. risk (27%)
  • fit to unfit = inc. risk (15%)
  • always active = dec. risk (23%)
2
Q

ACLS: Steven Blair (before redesign)

A
  • advocates ‘Fit vs. Fat’ in relation to all cause mortality
  • better to be fit and OVW than normal weight and unfit ( inc. RR for mortality)
3
Q

ACLS (after redesign)

A
  • dec. mortality risk for those that maintained/improved fitness
  • benefits seen in healthy and unhealthy, across all age groups
  • shows same RR for people going from fit to unfit as people from unfit to fit
  • being or becoming fit at some point is protective against CVD
4
Q

Physical Activity

A

Bodily movement that is produced by the contraction of skeletal muscles that significantly increases energy expenditure

5
Q

Absolute Intensity

A

General measurement of intensity applied to anyone

  • MET
  • kcals
6
Q

Physical Fitness

A

A set of attributes that people have or achieve that relates to the ability to perform PA

7
Q

Relative Intensity

A

Intensity specific to fitness level

- treadmill speed, VO2max

8
Q

Dose-Response Relationship

A

More PA is better to bring about health benefits, up to a point (plateaus)

9
Q

PA Guidelines for Americans (2008)

A
**avoid inactivity             Additional benefits:
MOD: 150 min/wk           300 min/wk
VIG: 75 min/wk                150 min/wk
- 10 min bouts during week
- m. Strength = 2 d/wk
10
Q

ACSM/AHA recommendations ( to promote/maintain health)

A

MOD: 30 min 5d/wk
VIG: 20 min 3d/wk
Combo
MS/ME: 2d/wk

11
Q

Exercise

A
  • Subclass of PA
  • planned, structured, and repetitive bodily movements done to improve or maintain one or more components of physical fitness
12
Q

Benefits of Regular PA ( improvement in CV and pulmonary function)

A
Inc. VO2max
Dec minute ventilation = more efficient
Dec myocardial O2 cost
Dec HR and BP
Inc exercise threshold for onset of lactate and disease signs/symptoms
13
Q

Benefits of Regular PA (reductions in CVD and RF)- think risk factors

A

Inc. HDL- removal of cholesterol

Dec: resting BP, BF and abdominal fat, clotting, and inflammation

14
Q

What is the main difference between the ACLS and Harvard studies?

A
ACLS = OBJ assessment- treadmill time
Harvard = SUBJ assessment- questionnaires