Physical Activity correct answers Bodily movement generated by skeletal muscles resulting in EE (heat)
Energy expenditure division correct answers - Non-exercise activity thermogenesis
- Voluntary PA
Metabolic Cart correct answers an instrument that measures the volumes of oxygen consumed ...
KIN 311 Final || A+ Graded Already.
Physical Activity correct answers Bodily movement generated by skeletal muscles resulting in
EE (heat)
Energy expenditure division correct answers - Non-exercise activity thermogenesis
- Voluntary PA
Metabolic Cart correct answers an instrument that measures the volumes of oxygen consumed
and carbon dioxide produced
Metabolic Chamber correct answers used to measure how many calories a person burns
What is doubly labeled water? correct answers Water is labeled with isotope, measure
disappearance from urine. Get CO2 production
Not ideal for clinical setting since collecting urine, and high cost. Used for research.
1 MET
3.5 ml/kg/min correct answers Amount of Oxygen consumed at rest
What do METs do correct answers Normalize the metabolic demand of a given activity or across
activities
Why are METs not very valid correct answers This value came from 1 40 year old man who was
70kg. Good reliability, bad validity
What is sedentary behaviour correct answers Any waking behaviour characterized by an EE of
less than or equal to 1.5 MET, while in a sitting, reclining or lying posture
Are activity and sedentary mutually exclusive correct answers No. Can be both active and
sedentary in a day
Physical Inactivity correct answers Insufficient PA level to meet present PA recommendations
Can be not physically active and very sedentary
Can be not physically active and not sedentary correct answers TRUE
What is a weekend warrior correct answers Inactive for most of the week followed by long bouts
of physical activity on a single day
- As long as you're getting some sort of physical activity, it lowers your risks. (Just working out
on weekend)
,If you are active, how can you still lose your gains correct answers You will lose your gains if
you engage in sedentary behaviour, even though you were active
0-1.5 METs correct answers Sedentary
1.5-3 METs correct answers Light PA
3-6 METs correct answers Moderate PA
6-8 METs correct answers Vigorous PA
What is the gold standard for assessing Physical Inactivity correct answers Want to assess over
different periods of time. Gold Standard is 7 days (whole week)
Methods for Assessing Physical (In)Activity correct answers Reliable methods: Giving same
results for a given amount of PA (questionnaires-self reporting)
Validity
Pros of self-reporting (questionnaires) correct answers Easy of use, Inexpensive, Easy to deliver
on large scale
Cons of self-reporting correct answers - Social desirability
- Memory/Recall
- Familiarity with terminology
Subjective assessment for Physical (In)activity correct answers Self-Report Measures of Physical
Activity (Diary, Questionnaire)
Advantages of Diary correct answers - Large populations
- Little expense
- No observer or interviewer
- Collect many subjects at once
- Can record specific activities and patterns
Disadvantages of Diary correct answers - Large data to process (time and expenses)
- Cooperation and motivation required
- Long collection period = less accurate data
- Need year of collection
Advantage of questionnaire correct answers - Large pop
- Specific activities recorded
- Patterns of behavior not affected
- EE may be estimated
Disadvantage of questionnaire correct answers - Inaccurate recall
, - Burdensome
- Must be age appropriate
- Need interview for accuracy
- Can't use with children
How do pedometers work correct answers Detect vertical accelerations of the body and record a
"step" when vertical acceleration exceed a threshold value
When is a pedometer for reliable (consisten) correct answers Faster walking and running paces
(stride is longer and clearer heel strike)
Is accuracy of pedometer affected by walking surface correct answers NO
When is the relationship between step counts and energy expended strongest correct answers For
moderate-intensity activities
Step count more accurate than kilocalorie estimates correct answers TRUE
Cons of pedometer correct answers - Only pick up vertical acceleration in one plane. Must wear
it correctly
- Issues if ppl have odd gaits
- May fail to record steps at slow speeds for obese ppl if tilted
Accelerometer correct answers Measure movement based on acceleration and deceleration of
body
What are accelerometer measurements proportional to correct answers Muscle forces
What does accelerometer provide correct answers Results in proportion to EE and frequency,
intensity, time of PA
- measures in 3 planes
Advantages of Accelerometers correct answers - Small and record data or long periods
- Can download data and to segment PA time periods
- Can use same one for diff participants
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