ISRCTN ISRCTN13915109
DOI https://doi.org/10.1186/ISRCTN13915109
Secondary identifying numbers 440078
Submission date
19/07/2015
Registration date
22/09/2015
Last edited
10/10/2023
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
Attention deficit hyperactivity disorder (ADHD) is a neurobiological condition (that is, a condition affecting the nervous system caused by a biological factor, for example genetics) that results in a number of behavioural symptoms including a short attention span, restlessness and acting on impulse. It can also cause sleeping problems and anxiety. The condition is most often seen in people with learning difficulties but can affect people of any intellectual ability. It can have a considerable effect on several areas of a sufferers life, leading to a relatively poor economic and social position within their population (lower socioeconomic status), less satisfaction with their employment and marriage and conditions such as depression and addiction. It is thought that 4.4% of adults have ADHD. However the nature of the disease and the best way to treat it are still not well understood; it is thought that the efficacy of pharmacological and/or therapeutic treatments is adversely affected by people refusing or not persisting with the treatment and has not been shown to last beyond 2 years. The aim of this study is to see whether neurofeedback (NFB) will result in better treatment outcomes for adults with ADHD.

Who can participate?
Adults diagnosed with ADHD and with a IQ score of more than 80.

What does the study involve?
Participants are randomly assigned to one of two groups. Those in group 1 (intervention group) are given 40 one-hour sessions of neurofeedback. Those in group 2 (waitlist group) also receive the sessions but only after the study is complete. All participants are asked to report on their own ADHD symptoms at the start of the study, one year after treatment and then 2.5 years after treatment. Attention span is also measured, using a computer test, at the beginning of the study and after treatment.

What are the possible benefits and risks of participating?
Not provided at time of registration

Where is the study run from?
Mental Capital Care clinic, Helsinki (Finland)

When is the study starting and how long is it expected to run for?
October 2011 to June 2016

Who is funding the study?
Finnish Funding Agency for Innovation (Tekes)

Who is the main contact?
Dr Ben Cowley
ben.cowley@helsinki.fi

Contact information

Dr Ben Cowley
Scientific

Työterveyslaitos
PL 40
Helsinki
00251
Finland

ORCiD logoORCID ID 0000-0001-8828-2994

Study information

Study designRandomized controlled single-centre trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Other
Study typeTreatment
Participant information sheet Not available in web format, please use contact details to request a participant information sheet
Scientific titleClinical trial of neurofeedback therapy intervention for finnish adult ADHD, with waiting list control and comparison of outcomes of pre- to post-treatment improvement on self-reported symptoms and computerised attention tests
Study acronymCENT
Study objectivesAttention Deficit/Hyperactivity Disorder (ADHD) is a common psychiatric disorder, with an estimated worldwide prevalence among children of around 5% (Polanczyc et al., 2007), and persistence into adolescence and adulthood estimated between 40-60% (Faraone et al., 2006); it is associated with a variety of problems such as poor socialization and academic performance, and the efficacy of pharmacological and/or therapeutic treatments is adversely affected by non-compliance or aversion and has not been shown to last beyond 2 years.

Principal hypothesis: application of neurofeedback will result in improved scores on self-report measures of ADHD, and computerised attention tests, compared to waiting list control.
Ethics approval(s)Helsingin ja Uudenmaan Sairaanhoitopiiri (english: Hospital District of Helsinki and Uusimaa), 28/03/2012, JulkL 621/1999, 24 §
Health condition(s) or problem(s) studiedAttention Deficit/Hyperactivity Disorder (ADHD)
InterventionAfter randomisation, the treatment group will be given 40 sessions of 1 hour per session of neurofeedback at the Mental Capital Care clinic in Helsinki. Baseline, post-treatment and follow-up measurements as described.

The control group will be tested at the same times as the treatment group. They will receive a computerised attention training intervention after the follow-up measurement.
Intervention typeBehavioural
Primary outcome measure1. Self-report of ADHD symptoms, using Brown Attention Deficit Disorder Scale (BADDS) to be measured at baseline, post-treatment 1 year after baseline, and follow-up 2.5 years after treatment
2. Adult ADHD Self Report Scale (ASRS) to be measured at the same timepoints as BADDS
3. Objective measure of attention, using the computerised Test Of Variables of Attention (TOVA), to be completed at baseline and post-treatment
Secondary outcome measuresTreatment group records of performance during neurofeedback ('learning curves').
Overall study start date01/10/2011
Completion date01/06/2016

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants55
Total final enrolment54
Key inclusion criteria1. Pre-existing diagnosis of ADHD
2. Nonexistence of neurological diagnoses
3. IQ score > 80 measured by a qualified psychologist using WAIS IV
4. Scores on ASRS and BADDS indicating presence of ADHD
Key exclusion criteriaExtreme outlier scores in the scales of
1. Generalized Anxiety Disorder (Spitzer et al., 2006)
2. Beck Depression Inventory (Beck et al., 1996)
3. Alcohol Use Disorders Identification Test (Saunders et al., 1993)
4. The Mood Disorder Questionnaire (Robert et al., 2000)
5. Test of prodromal symptoms of psychosis (Heinimaa et al., 2003)
6. Dissociative experiences scale (Liebowitz, 1992) for dissociative symptoms

Thresholds for exclusion were not fixed but at the discretion of the consulting psychiatrist. Use of medication for ADHD was not an exclusion criterion but participants were asked not to make changes in medication during the time of the training.
Date of first enrolment01/04/2012
Date of final enrolment01/08/2012

Locations

Countries of recruitment

  • Finland

Study participating centre

Mental Capital Care clinic
Malmi
Helsinki
00700
Finland

Sponsor information

University of Helsinki
University/education

Institute of Behavioural Sciences
PO Box 9
Helsinki
FI-00014
Finland

Phone +358 (0)294 1911
Email ibs-info@helsinki.fi
Website http://www.helsinki.fi/ibs/index.htm
ROR logo "ROR" https://ror.org/040af2s02

Funders

Funder type

Government

Tekes
Government organisation / Local government
Alternative name(s)
Finnish Funding Agency for Innovation
Location
Finland

Results and Publications

Intention to publish date01/01/2016
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryData sharing statement to be made available at a later date
Publication and dissemination planA journal publication is planned, titled:
Learning and Arousal: a Clinical Trial Report on a Novel Neurofeedback Design for Adult ADHD

A Master's thesis was completed describing some results of the initial treatment phase, titled:
A neurofeedback intervention study on adults with ADHD
by Edua Hölmström

Further publications are to be confirmed.
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 09/05/2016 Yes No
Other publications 29/06/2021 10/10/2023 Yes No

Editorial Notes

10/10/2023: Publication reference and total final enrolment added.
01/06/2016: Publication reference added.