Please select the eligibility criteria that correspond to the clinical trial below.
Title: Understanding the Impact of School-Based Physical Activity Programs
Brief Summary: The central hypothesis of the Fueling Learning Through Exercise (FLEX) study is two innovative school-based physical activity programs (a walking/running program and a classroom activity break program) will increase school-time and total daily minutes children engage in moderate-to-vigorous physical activity, relative to controls, and that children who attend schools with these PA programs will demonstrate improved cognitive functioning, academic achievement, and attendance, relative to controls.


Options:
A: Inclusion Criteria:

* Parental consent
* 7.5-9.5 years
* Capable of performing exercise
* Absence of school-identified learning disability
* IQ \> 85
* Tanner Scales score \<= 2
* ADHD Rating Scales score \> 85%

Exclusion Criteria:

* Non-consent of guardian
* Above or Below age range
* Any physical disability that prohibits exercise
* School-identified learning disability
* IQ \< 85
* Tanner Scales Score \> 2
* ADHD Rating Scale score \< 85%
B: 1. Cohort 1:

   School level:

   Inclusion criteria
   * Enrolled in the the Fit to Study Main trial
   * Within a 75 miles radius from Oxford
   * Lower lower socio-economic background, as indicated by percentage of free school meal (FSM)-eligible pupils or postcode-derived index of multiple deprivation

   Pupil level:

   Inclusion criteria
   * Enrolled in the Fit to Study Main Trial
   * English speaking

   Exclusion criteria
   * Contraindication to MRI
   * Contraindication to VO2max fitness test
2. Cohort 2

School level:

Inclusion criteria

* High completion rates of baseline cognitive, questionnaire and fitness data relative to other schools
* Responsive to messages from the Fit to Study research team
* Lower socio-economic background, as indicated by the percentage of FSM or postcode-derived index of multiple deprivation
* For intervention schools only: adherence to the intervention.

From those schools that met criteria, a sub-sample of 10 schools is chosen by the trial manager.

Pupil level:

Inclusion criteria

* Low fitness compared to other pupils of their school who expressed an interest, based on their baseline fitness assessment (part of Fit to Study Main Trial)
* Enrolled in the Fit to Study Main Trial
* English speaking

Exclusion criteria

- Contraindication to MRI

If selected schools are not interested in the brain-imaging sub-study, these schools are replaced by other schools from the Fit to Study sample that are within reasonable travel distance (max 1.5h) from the brain imaging centre.
C: Inclusion Criteria:

* All six full-time schools with the program called Programa Saúde na Escola in Fortaleza were eligible
* students of both sexes
* students aged 12-15 years
* students who are enrolled in 7-9 grade classes

Exclusion Criteria:

* students who are younger than 12 years-old and older than 15 years-old
* students with uncompleted data at baseline or 4-months follow-up
* students who are absence in the school days with data collection
* students who dropout the school
* students who refused to participate in data collection or intervention
D: Inclusion Criteria:

Children participants 3rd or 4th grade student in participating school (during first school year of study)

Exclusion Criteria:

Not a 3rd or 4th grade student

Answer: D