PPT 6 Flashcards

1
Q

What is the gold standard of research design for testing hypothesis

A

randomized controlled trials

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2
Q

do randomized controlled trials randomly assign the participants in the experimental and control groups

A

yes

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3
Q

Randomized controlled trials: are measurements made before and after intervention

A

yes

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4
Q

What does randomization ensure with the experimental and control groups

A

Ensures that the exp and control groups are comparable with respect to all factors (known or unknown)
- except for the factors addressed by the exp intervention

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5
Q

What are the 5 challenges to RCT

A
1- motivation to participants if not randomized to intervention
2- double blind 
3- biases poor compliance, dropout
4- external validity
5- practicality with larger samples
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6
Q

What does HEARTY stand for

A

Healthy eating

aerobic and resistance training in youth

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7
Q

HEARTY participants

  • amount
  • age
  • criteria
  • obesity BMI / overweight
  • PA
A
  • 304 ado
  • 14-18 yrs
  • post pubertal
  • obesity bmi > 95th
  • Overweight bmi 85-95th with diabetes risk factor
  • PA < 2 weekly ET of > 20 mins each
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8
Q

Timeline run in weeks?

A

1-4

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9
Q

timeline intervention weeks

A

5-26 weeks

3-6 mo

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10
Q

HEARTY randomization in 4 groups

A

1- aerobic
2- resistance
3- combined
4- control only diet

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11
Q

hearty 6 variables assessed with their methods

A

1- body comp = MRI
2- Anthropometry= weight, height, waist, hip
3- RMR= indirect calo
4- CRF= indirect cal
5- MusculoF= 8-RM, CSEP
6- CVD risk factors= fasting blood measures, OGTT

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12
Q

MRI analysis used what software and primary outcome

A

slice-o-matic software v 4.3

% body fat

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13
Q

MRI analysis consisted of 4 factors

A

pixels
area
volume
mass

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14
Q

FITT for aerobic ET

A
F= 4x/week
I = 65-85% HRmax
T= treadmill, bike, elliptical
T= 15-45mins
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15
Q

FITT Resistance ET

A
F= 4x/week
I= 1-3 sets, 15 RM
T= machine, dumbbells
T= 20-45 mins
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16
Q

Results of Hearty primary outcome

A
  • % body fat

- CVD risk markers

17
Q

Results for Cardiorespiratory & Musculoskeletal Fitness. Aerobic ET

A

aerobic exercise training alone increased abdominal muscular endurance

18
Q

Results for Cardiorespiratory & Musculoskeletal Fitness.. RT

A

increased upper and lower body muscular strength and endurance

19
Q

Results for Cardiorespiratory & Musculoskeletal Fitness. Combined group

A

greatest improvements in overall strength and fitness were demonstrated by
combined

20
Q

No changes in 3 things compared to controls

A

grip strength
sit and reach
vertical power

21
Q

Conclusion for aerobic + RT and body fat

A

largest decrease in body fat and waist

22
Q

Conclusion for aerobic + RT in CRF and MSKF

A

increase for both

23
Q

Is combine training superior to aerobic training alone

A

yes

Greater reductions in body fat, BMI, waist, muscular strength & endurance

24
Q

does the media distort research results

25
Which group had the highest drop out rate and what was the reason for the drop outs
The resistance training group had the most drop outs and the main reason for the drop out was self conscious and depressions a lot of mental health predictors
26
What is the adherence rate in adults
50% discontinue within 6 months