MAFF-CRT: School-to-Home Trial to Reduce Sedentary Behaviour in Children
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 200
- 试验地点
- 1
- 主要终点
- Daily Sedentary Time
研究概览
简要总结
Children today spend many hours sitting at school and at home, often in front of screens. Prolonged sitting in childhood increases the risk of future health problems such as diabetes, heart disease and poor mental wellbeing. MAFF is a simple school-to-home programme that teaches short, practical movement breaks in the classroom and encourages families to repeat them together at home through structured weekly challenges. Over 12 weeks, we will compare classes using MAFF with classes continuing as usual to assess whether children sit less, move more and improve their wellbeing. If effective, MAFF will provide schools and communities with an easy-to-implement toolkit to promote healthier and more active families.
详细描述
Sedentary behaviour is an independent risk factor for cardiometabolic disease and poor mental health, even among individuals meeting physical activity recommendations. In children, prolonged sitting is associated with impaired metabolic regulation, increased adiposity risk, lower psychological wellbeing and behavioural tracking into adolescence and adulthood. Early intervention targeting sedentary patterns is therefore essential for primary prevention.
Most school-based interventions focus on increasing moderate-to-vigorous physical activity (MVPA) during school hours, with limited transfer to home environments and weak sustainability. Many also require specialised personnel or equipment, limiting scalability and equity.
The MAFF (Methodology for Family Physical Activity) model is grounded in the Socio-Ecological Model and the COM-B framework (Capability, Opportunity, Motivation-Behaviour). It targets:
- Capability: structured micro-activity routines delivered in class.
- Opportunity: embedding movement within existing school and home routines.
- Motivation: intergenerational engagement, social reinforcement and repeated micro-success experiences.
Its innovation lies in the structured school-to-home transfer mechanism and the focus on sedentary behaviour fragmentation through short, repeated movement bouts integrated into daily life.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Enrolled in participating Portuguese public schools
- •Written informed consent provided by a parent or legal guardian
- •Assent provided by the child
- •Able to participate in light-to-moderate physical activity as part of normal school activities
排除标准
- •Medical conditions or physical limitations that contraindicate participation in physical activity
- •Cognitive, developmental, or behavioural conditions that would prevent understanding or adherence to the intervention procedures (as assessed by school staff)
- •Lack of parental/legal guardian consent
- •Concurrent participation in another structured physical activity or behavioural intervention study
研究组 & 干预措施
MAFF Intervention (School-to-Home Micro-Intervention)
Participants will receive a 12-week structured intervention combining school-based and home-based components:
Two weekly 10-15 minute micro-activity sessions delivered in the classroom Two weekly structured home-based movement challenges involving caregivers Adherence monitoring through logs Fortnightly feedback to support engagement Fidelity monitoring using structured checklists
The intervention focuses on reducing sedentary behaviour by fragmenting prolonged sitting and promoting short bouts of physical activity integrated into daily routines.
干预措施: Name: MAFF (Methodology for Family Physical Activity) (Behavioral)
Control (Usual Practice / Wait-list)
The control group will continue usual school activities without any structured intervention.
Participants will: Complete all assessment timepoints (baseline, post-intervention, follow-up) Not receive the MAFF programme during the study period Post-trial: The MAFF intervention will be offered to control group participants after completion of the study.
结局指标
主要结局
Daily Sedentary Time
时间窗: Baseline (T0), Post-intervention (12 weeks, T1), 3-month follow-up (T2)
Daily sedentary time measured via validated self-report instruments and accelerometry (subsample). Moderate-to-vigorous physical activity (MVPA) assessed using validated questionnaires and accelerometry (subsample). Assessment time points: baseline (T0), post-intervention at 12 weeks (T1), and 3-month follow-up (T2).
次要结局
- Screen Time(Baseline (T0), post-intervention at 12 weeks (T1), and 3-month follow-up (T2) for screen time, sleep, psychological distress, family cohesion, and anthropometrics; adherence tracked during the intervention.)
研究者
Susana Sofia Martins Garradas
MAFF-CRT: School-to-Home Trial to Reduce Sedentary Behaviour in Children
Instituto Politécnico de Setúbal