The Effects of an In-school Physical Activity Intervention on Adolescents' Brain Structure and Function

NCT ID: NCT03593863

Last Updated: 2019-02-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

103 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-05-01

Study Completion Date

2019-09-01

Brief Summary

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Physical activity has shown beneficial effects for cognitive and brain health, suggesting it may provide a highly scalable intervention to improve academic achievement. This project is part of a large-scale randomised controlled trial called Fit to Study (ClinicalTrials.gov ID: NCT03286725). The main Fit to Study trial aims to test the effect of a school-based physical activity intervention on academic performance (as well as cognition and physical measures) across Year 8 pupils in 100 secondary schools. The current study - the Fit to Study - Brain imaging sub-study - will target a sub-sample of participants in the large-scale trial, in order to test pre- to post intervention changes in hippocampal volume, as well as cognitive performance, mental health and brain organisation. We hypothesise that the intervention will change anterior hippocampal volume of Year-8 pupils, as well as mental health, cognitive performance, and more generally, brain structure and function. We further hypothesise that changes in brain organisation (e.g. hippocampal volume) may mediate changes in cognitive performance and mental health.

Detailed Description

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Physical activity has shown beneficial effects for cognitive and brain health. In particular, studies have shown that physical activity has the potential to increase the volume of the anterior portion of the hippocampus, a brain structure involved in learning and memory. The Fit to Study - Brain imaging sub-study is being conducted to understand better the effects of a physical activity intervention delivered during school PE lessons on anterior hippocampal volume, as well as cognition, mental health, and brain organisation.

The Fit to Study main trial aims to test the effect of a school-based physical activity intervention on academic performance (as well as cognition and physical measures) across Year 8 pupils in 100 secondary schools. A full description of the Fit to study main trail, including its outcome measures, has been provided as part of its registration at ClinicalTrials.gov (NCT03286725).

The Fit to Study - Brain imaging sub-study will target a sub-sample of participants of the large-scale trial, in order to test pre to post intervention changes in anterior hippocampal volume, as well as cognitive performance, mental health and brain organisation. The assessments will take place pre-intervention, immediately post-intervention and 12-months post-intervention, and will comprise structural and functional magnetic resonance imaging (MRI) scans.

Fit to Study main trial participants are considered eligible for brain imaging sub-study. The brain imaging sub-study consists of two sub-samples, recruited at different times during the trial:

1. The first cohort of 60 participants completed assessments pre-intervention, will complete identical assessments post-intervention to investigate pre-to-post intervention changes, and will be invited to take part in follow-up assessments.
2. A second cohort of \~50 participants will be recruited for post-intervention assessments that are similar, but not identical, to the assessments of the first group, as well as 1-year follow-up assessments. This cohort will enable cross-sectional analysis of between-group (intervention-control) differences in a larger sample.

The assessments are similar, but not identical for the two cohorts. The key assessments are listed here and details are provided in the 'outcome measures' section.

1. Cohort 1

* Magnetic resonance imaging (at pre- and post intervention)
* Computer-based cognitive tasks (at pre-, and post intervention and follow-up)
* Mental health questionnaires (at pre-, and post intervention and follow-up)
* Physical activity assessments (at pre-, and post intervention, and follow-up)
* Fitness assessments (at pre-, and post intervention)
* Gait assessments (at pre- and post intervention)
2. Cohort 2

* Magnetic resonance imaging (at post intervention only)
* Computer-based cognitive tasks (at post intervention and follow-up)
* Mental health questionnaires (at post intervention and follow-up)
* Physical activity assessments (at post intervention and follow-up)
* Gait assessments (at post-intervention only)

The primary aims of the study are:

1. To examine cross-sectional relations between anterior hippocampal volume and physical activity and fitness at baseline (cohort 1)
2. To examine whether changes in anterior hippocampal volume are greater in the intervention group compared to the control group (i.e. group by time interaction tested in cohort 1)

Secondary aims are:

1. To examine cross-sectional relations between brain structure and function, and physical activity and fitness at baseline (cohort 1)
2. To examine whether changes in brain organisation, mental health, cognitive performance and fitness are greater in the intervention group compared to the control group (i.e. group by time interaction tested in cohort 1)
3. To examine whether brain organisation, mental health, cognitive performance and fitness is different in the intervention group compared to the control group post intervention
4. To identify MRI markers predisposing the PA intervention effect

Conditions

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Physical Activity

Keywords

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Brain structure and function Adolescents Physical activity Cognitive function Mental health Fitness

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The Fit to Study brain imaging study is embedded in the Fit to Study trial, which is a parallel group, superiority cluster-randomised efficacy trial of a 10-month (one academic year) vigorous physical activity (VPA) intervention versus control.
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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"PE as Usual" Control Group

The Control Group will be asked to continue with their normal PE lessons

Group Type NO_INTERVENTION

No interventions assigned to this group

Intervention Group

Physical Education (PE) Programme

Group Type EXPERIMENTAL

Physical Education (PE) programme

Intervention Type BEHAVIORAL

The intervention consists of a 10-month (one academic year, September-June) physical activity programme delivered by PE teachers during regular Year-8 PE lessons. The Intervention involves roughly 20 minutes of prescribed activities per week.

Interventions

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Physical Education (PE) programme

The intervention consists of a 10-month (one academic year, September-June) physical activity programme delivered by PE teachers during regular Year-8 PE lessons. The Intervention involves roughly 20 minutes of prescribed activities per week.

Intervention Type BEHAVIORAL

Eligibility Criteria

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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:

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


* 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:


* 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
* Contraindication to VO2max fitness test
2. Cohort 2

School level:


\- 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.
Minimum Eligible Age

11 Years

Maximum Eligible Age

16 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Oxford Brookes University

OTHER

Sponsor Role collaborator

University of Oxford

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Heidi Johansen-Berg

Role: PRINCIPAL_INVESTIGATOR

University of Oxford

Locations

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Wellcome Centre for Integrative Neuroimaging (WIN)

Oxford, , United Kingdom

Site Status

Countries

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United Kingdom

References

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Neil-Sztramko SE, Caldwell H, Dobbins M. School-based physical activity programs for promoting physical activity and fitness in children and adolescents aged 6 to 18. Cochrane Database Syst Rev. 2021 Sep 23;9(9):CD007651. doi: 10.1002/14651858.CD007651.pub3.

Reference Type DERIVED
PMID: 34555181 (View on PubMed)

Wassenaar TM, Wheatley CM, Beale N, Salvan P, Meaney A, Possee JB, Atherton KE, Duda JL, Dawes H, Johansen-Berg H. Effects of a programme of vigorous physical activity during secondary school physical education on academic performance, fitness, cognition, mental health and the brain of adolescents (Fit to Study): study protocol for a cluster-randomised trial. Trials. 2019 Apr 2;20(1):189. doi: 10.1186/s13063-019-3279-6.

Reference Type DERIVED
PMID: 30940164 (View on PubMed)

Other Identifiers

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EEF2681

Identifier Type: OTHER

Identifier Source: secondary_id

HMR00670

Identifier Type: -

Identifier Source: org_study_id