Sedentary B Flashcards
Define PI
The non-achievement of physical activity guidelines - Thivel et al (2018)
Define sedentary B
Any waking B characterised by EE <1.5METS whilst in a sitting, reclining or lying posture - Tremblay et al (2017)
Give a brief overview of the correlates of sedentary B provided by the NCSEM
- Demographic factors - sedentary B increases w age, tends to be higher in low socioeconomic groups (may not have the money to fund expensive sports, perceived walkability of a neighbourhood - neg association with this and tv viewing), tv viewing higher in some ethnic households
- Sociocultural factors - young high levels sedentary B if parents/ siblings do
- Biological factors - sedentary B generally increases with age and rises sharply from 70yrs onwards, during adolescence boys typically spend more time watch tv or using a computer when compared with girls of the same age
Describe a study that looked at the correlates of sedentary B in young people and what they concluded about strategies aimed at reducing sedentary B
van Sluijs et al. (2010)
- Cross-sectional analysis - Q’aire and accelerometer data
- School children (aged 9-10) in Denmark, Estonia, Portugal and Norway
- Adolescents (aged 14-15) more sedentary than children
- Socioeconomic position associated with sedentary B in Portugal and Estonia
- Norway children game console at home, Portugal with tvs in room
- Single strategy aimed at reducing sedentary B not work across all countries as behavioural patterns differed across countries
Briefly describe a study that looked at the correlates of sedentary B in adults
O’Donoghue et al. (2016)
- Systematic review of 74 studies
- Age, PA, BMI, socioeconomic status and mood (correlates) all signif correlated with sedentariness
- Married/ cohabiting increased leisure screen time
- Having children reduced sitting time
- Environmental factors (green-space, weather, perceived walkability) all contributed to sedentary B levels in adults
Briefly describe a study that looked at the correlates of sedentary B in uni students
Castro et al (2018)
- Systematic review of 126 studies
- Self-report, screen time and sitting time measures
- Physical activity, obesity markers and gender (female) were related to sedentary behaviour
- Further research on modifiable variables covering all socio-ecologic levels is needed
- Employing more longitudinal designs will enable the identification of determinants
- Most correlates with sedentary B were non-modifiable factors - limitation to work in this field aiming to reduce sedentary B
Why is too much sitting a health hazard?
“Sedentary behaviour … is adversely associated with health outcomes, including cardio- metabolic risk biomarkers, type 2 diabetes and premature mortality” - Dunstan et al. (2012)
“Even when adults meet physical activity guidelines, sitting for prolonged periods can compromise metabolic health” - Owen et al. (2010)
Give a study that examined the associations between occupational sitting and health problems
van Uffelen et al. (2010)
- Occupational sitting increased risk of diabetes, CVD and premature mortality
What are some of the NCSM suggestions for reducing sedentary B and creating healthy habits?
- Stand instead of sitting
- Limits ion sitting activities
- Use stairs where possible
- Set alarms for active breaks
Give a study that provided a workplace intervention
Clemes et al. (2022)
- Structured Health Intervention For Truckers (SHIFT)
- Cluster randomised controlled trial (RCT) - groups randomised in intervention vs control trials
- Intervention group received 6month follow up educational session (social cognitive theory - humans learn by obs Bs, punished B less likely, rewarded B more likely), a fitbit, step challenges, cab workouts, health coach support
- 18month period, ““the most at-risk commercial drivers appear receptive to a health promotion programme, others reverted to old Bs” - Ruettgar et al. (2022)
What are the 5 types of intervention and briefly describe them?
- Informational (passive informational, educational approaches - aimed at parents) and
- Cognitive (general goal setting, problem solving, relapse prevention strategies)
- Behavioural (pre-planning procedures, skill building, reinforcement)
- Environmental (more common in occupational settings, change enviro to facilitate desired change - e.g., appealing apparatus in playground at schools or implementing walking instead of cars, ensuring tv isn’t focal point of room)
- Social support (involvement of parents or care-givers)
What intervention works best when targeting sedentary B in young people?
Combining approaches for best effect
‘interventions to reduce children’s sedentary behaviour have a small but significant effect.’ - can reduce sedentary B in children by implementing strategies Biddle, Petrolini and Pearson (2014)
