KNR 311 Exam 3 Study Questions
with Correct Answers <Latest
Version>
1. Sensitivity - ANSWER The ability to detect or sense stimuli in the internal
or external environment and to make appropriate responses
2. Reactivity - ANSWER How the device reacts to movements that are not
what you want to measure
Ex. Shaking a pedometer
3. Feasibility - ANSWER Comfort to respondent
Cost of administration
4. What is the limitation of self-reporting as a way to measure physical
activity? - ANSWER Self-reporting is biased towards structured, high-
intensity exercise and has low-moderate validity and reliability.
5. Why is self-reporting not good for estimating minutes of physical activity? -
ANSWER Self-reporting is not accurate in estimating minutes of physical
activity, but is better at estimating total energy expenditure.
6. Effect of weight training on metabolism - ANSWER Virtually no effect on
resting metabolism in the short term (less than a year or two)
Any added muscle is minuscule compared with the total amount of skeletal
muscle in the body
,Muscle has a very low metabolic rate when it is at rest
7. Measurement issues in accelerometry - ANSWER Validity - strong positive
correlations between accelerometer and indirect calorimetry executed in lab
setting (lab CC is 0.8-0.9 while field is 0.4-0.6)
Inter-instrument reliability is consistently high
Sensitive to change
Non-reactive
Acceptable to subject
Unit cost = $200-500
Interface cost = $500
8. Limitations of accelerometers - ANSWER Not sensitive some movements
Not sensitive to grade change (up or downhill)
Not sensitive to increased weight (carrying objects)
Restricted to mainly ambulatory activity
9. Pattern recognition monitors - ANSWER Combine multiple PA assessment
methods
High validity
Cost = $80-5000
Aim to maintain feasibility while improving validity by incorporating many
different methods of monitoring PA in one device
10.Sitting disease - ANSWER The concept that the more you sit, the less
healthy you will be
, 11.Time spent by adults in various modes of activity/inactivity - ANSWER
36% light (IPA)
63% sedentary
1% MVPA
12.Self-Report Tools - ANSWER Require the client to identify their own PA
levels
Instruments
- Recall
- Diaries/Logs
- Questionnaire
Most feasible, least valid
13.Accelerometer Measurement Issues - ANSWER Validity
Indirect calorimetry lab r = 0.80 to 0.90 lab
Indirect calorimetry field r = 0.40 to 0.60
Reliability
Inter-instrument reliability consistently high (r > 0.90)
Sensitive to change
Non-reactive
Acceptable to subject
Acceptable cost? (units $200 to 500, interface $500
14.Accelerometer Limitations - ANSWER Not sensitive some movements
Not sensitive to grade change (up or downhill)
Not sensitive to increased weight (carrying objects)
Restricted to mainly ambulatory activity
with Correct Answers <Latest
Version>
1. Sensitivity - ANSWER The ability to detect or sense stimuli in the internal
or external environment and to make appropriate responses
2. Reactivity - ANSWER How the device reacts to movements that are not
what you want to measure
Ex. Shaking a pedometer
3. Feasibility - ANSWER Comfort to respondent
Cost of administration
4. What is the limitation of self-reporting as a way to measure physical
activity? - ANSWER Self-reporting is biased towards structured, high-
intensity exercise and has low-moderate validity and reliability.
5. Why is self-reporting not good for estimating minutes of physical activity? -
ANSWER Self-reporting is not accurate in estimating minutes of physical
activity, but is better at estimating total energy expenditure.
6. Effect of weight training on metabolism - ANSWER Virtually no effect on
resting metabolism in the short term (less than a year or two)
Any added muscle is minuscule compared with the total amount of skeletal
muscle in the body
,Muscle has a very low metabolic rate when it is at rest
7. Measurement issues in accelerometry - ANSWER Validity - strong positive
correlations between accelerometer and indirect calorimetry executed in lab
setting (lab CC is 0.8-0.9 while field is 0.4-0.6)
Inter-instrument reliability is consistently high
Sensitive to change
Non-reactive
Acceptable to subject
Unit cost = $200-500
Interface cost = $500
8. Limitations of accelerometers - ANSWER Not sensitive some movements
Not sensitive to grade change (up or downhill)
Not sensitive to increased weight (carrying objects)
Restricted to mainly ambulatory activity
9. Pattern recognition monitors - ANSWER Combine multiple PA assessment
methods
High validity
Cost = $80-5000
Aim to maintain feasibility while improving validity by incorporating many
different methods of monitoring PA in one device
10.Sitting disease - ANSWER The concept that the more you sit, the less
healthy you will be
, 11.Time spent by adults in various modes of activity/inactivity - ANSWER
36% light (IPA)
63% sedentary
1% MVPA
12.Self-Report Tools - ANSWER Require the client to identify their own PA
levels
Instruments
- Recall
- Diaries/Logs
- Questionnaire
Most feasible, least valid
13.Accelerometer Measurement Issues - ANSWER Validity
Indirect calorimetry lab r = 0.80 to 0.90 lab
Indirect calorimetry field r = 0.40 to 0.60
Reliability
Inter-instrument reliability consistently high (r > 0.90)
Sensitive to change
Non-reactive
Acceptable to subject
Acceptable cost? (units $200 to 500, interface $500
14.Accelerometer Limitations - ANSWER Not sensitive some movements
Not sensitive to grade change (up or downhill)
Not sensitive to increased weight (carrying objects)
Restricted to mainly ambulatory activity
