Adolescents and Physical activity

Question 1

how many adolescents (11-17) were inactive in 2016?

Answer 1

81% of adolescents aged 11-17
Lower prevalence in boys (77.6%) than in girls (84.7%)

Question 2

why is PA important for adolescents ?

Answer 2

• Health behaviours established in adolescents carry through to adulthood.
• First major decline in Pa
• Health consequence of inactivity:
• Obesity (prevention is crucial)
• Increases in diabetes in adolescents (secondary health problems)
• Impacts on mental health.

Question 3

Lancet(2021)

Answer 3

• Higher levels of Pa are associated with greater general physical self-concept and higher self-efficacy, but effects sizes are small.

Question 4

strong evidence for:

Answer 4

• Gender
• Social support from friends and family
• Multi-utility activity supportive built environments
• Features of PE environments
• School- provisions of intramural sport and school PE climate

Question 5

roles of schools in PA in adolescents

Answer 5

• Availability of within-school sports and activity is positively related to overall adolescents Pa.
• Research involving older adolescents (15-19 years) is scarce.
• Co-designed with adolescents.
• Interventions required context-specific support for schools to ensure effective implementation and sustainability.

Question 6

Bunr2Learn findings

Answer 6

• Participation in teacher facilitated HIIT breaks improved older adolescents’’ cardiorespiratory (CRF) at the primary endpoint of 6 months.
• Improvements in CRF were not sustained once teachers ceased the delivery of HIIT breaks during curriculum time.
• Improvements were found in a range of secondary outcomes including muscular fitness, hair cortisol concentrations, steps/day during school hours and HIIT self-efficacy.
• Participants who were overweight or obese at baseline had the largest improvements in cortisol, mental health and cognitive function.

Question 7

social support - PLAN-a

Answer 7

• Peer-led Pa Intervention for adolescent for girls
• Analysis showed evidence of a 6.09 minute (95% Cl = 1.43, 10.760 between- arms difference in weekday MVPA at Time 2 in favour of the intervention arm.
• Poor implementation probably explains the lack of consistency in the effectiveness of different types of Pa interventions targeting interventions have been delivered as intended.