Chapter 1-3 Flashcards
Sedentary behaviour for adults
Minimise time spent in prolonged sitting.
Break up long periods of sitting as often as possible
Physical activity guidelines for young people
Should accumulate in at least 60 minutes of moderate to vigorous PA everyday
Include some aerobic activity
At least 3 days a week engage in bone strengthening activities
1- several hours a day
Sedentary behaviour for young people
Minimise time spent being sedentary by:
Limit use of electronics media to no more than 2 hours a day
Break up long periods of prolonged sitting as much as possible
Barriers of PA
Gender, socioeconomic status, culture, lack of time, lack of motivation, income, location, low self efficacy and injury
Physical activity guidelines for adults
Any sort of physical activity is better than doing none
Be active most days of the week
Accumulate in 2.5-5 hours of moderate intensity PA or 1.25-2.5 hours of vigorous intensity PA a week
Muscle strengthening PA 2 days a week
METs
METS is a way of measuring physical activity intensity
This unit is used to estimate the amount of oxygen used by the body during physical activity
1 MET= energy expenditure at rest
The harder you work, the higher he MET
3-6 moderate 6+ vigorous
Dimensions of PA
Frequency: the number of times a person engages in PA
Intensity: how hard an activity is
Duration: Length of time engaged in PA
Type: type of domain eg.household chores
Subjective and objective definition
Subjective: depends on the individuals owns perception/opinion. Good for measuring a populations health
Objective: rely off solid data or observations, measured by an object. Good for measuring an individual’s health
Subjective and objective measures
Subjective: recalls survey, diaries or logs
Objective: pedometers, heart rate monitors, accelerometers and direct observation
Recall survey
Self administered survey for the past month/week
May need a proxy report for children and elderly
ADVANTAGES: no reactivity, assesses all dimensions, quick, easy and cheap
DISADVANTAGES: can be inaccurate due to social desirability bias, not suitable for children under 10 or elderly due to cognitive limitations
Logs/diaries
Reporting daily into diaries for all dimensions
May need proxy report for children and elderly
ADVANTAGES: good for small groups, easy to complete, measures all dimensions s
DISADVANTAGES: can be inaccurate due to social desirability bias, not suitable for children or elderly
Direct observation
Involves watching participant and recording results using a template
Commonly used for schools
ADVANTAGES: quick and easy for small groups, records context, qualitative and quantitive information, behaviour is observed and used in school settings
DISADVANTAGES: difficult with large groups, time and intensive labour
Pedometry
Small device that counts steps
ADVANTAGES: inexpensive, non-invasive, small, able to measure common activity, can be used in all settings
DISADVANTAGES: doesn’t measure the dimensions, misses a lot of context of PA, loss of accuracy when running, and possibility of being tampered with by the participant, potential to be reactive
Accelerometry
Worn by participant and records all body motion over time. Focuses on acceleration and deacceleration.
ADVANTAGES: provides information and on frequency, intensity and duration, small, simple, quick data
DISADVANTAGES: expensive, not good for large groups, needs a pro to administer
Reactivity
Bias that occurs when people modify their behaviour during the period of measurement
Eg. If people know they’re being measured the may alter their PA
Social desirability bias
When a persons report results are a,there’s in some way to appear more socially desirable
Eg. Boy might write 5hrs of PA instead of2
Validity
The degree to which a test or instrument measures what it claims to measure.
It relates to the accuracy of a measure
Reliability
The ability of a test to produce consistent and repeatable results
Practicality
The quality or state of being practical
Mediator
A mediator is a mechanism through which the strategy is believed to influence physical activity