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Cognitive Therapy Plus Dietary Intervention for Obesity Treatment (COGNI-OB)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03749772
Recruitment Status : Completed
First Posted : November 21, 2018
Last Update Posted : November 21, 2018
Information provided by (Responsible Party):
Juan Jose Hernández Morante, Universidad Católica San Antonio de Murcia

Brief Summary:

This randomized clinical trial was carried out from January 2017 to December 2017 at the facilities of the Catholic University of Murcia. Written informed consent was required from each patient. The protocols of the present clinical trial follow the CONSORT standards. To measure the impact of cognitive training on weight loss in overweight / obese subjects, a double-blind study (de facto masking) was designed.

Both the participants and the statistical assessors were unaware of the study hypothesis. Participants were unaware of treatments and possible assignments between groups, and only those subjects who were randomly assigned to the cognitive training group were informed that such training was part of dietary therapy.

The principal investigator of the present study (J.J.H.M.) carried out the randomization, with the assistance of the Microsoft Excell program, with the help of a macro designed in Visual Basic® for that purpose.

The randomization divided the subjects into two groups, as they were treated with a hypocaloric diet plus 12 nutrition education sessions (CONTROL group) or a group that were treated with a hypocaloric diet plus 12 sessions of cognitive training (COGNITIVE group).

In order to obtain a similar size in both groups, a randomization in blocks with a 1: 1 allocation ratio was performed.

Cognitive performance measures were performed before and after training. One week before the beginning of the cognitive and dietary intervention, the participants performed a series of cognitive tests. After 12 weeks of both dietary and cognitive intervention, participants were reexamined to measure performance on neurocognitive tests.

Condition or disease Intervention/treatment Phase
Overweight and Obesity Behavioral: Cognitive Training Not Applicable

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 100 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Outcomes Assessor)
Masking Description: Randomization was performed by the principal investigator. The interventions were carried out individually, so the participants were unaware of the existence of another study arms.
Primary Purpose: Treatment
Official Title: Effectiveness of a Cognitive Training Therapy for Overweight/Obesity Treatment: A Randomized Clinical Trial.
Actual Study Start Date : February 1, 2016
Actual Primary Completion Date : December 21, 2016
Actual Study Completion Date : February 28, 2017

Arm Intervention/treatment
Experimental: Cognitive
The participants of the COGNITIVE group performed cognitive training during 12 sessions during the 3 months of hypocaloric treatment. The training was carried out with the PC game Brain Exercise TM (Bandai Namco Games Ltd.). The participants made a total of 12 practice exercises, which implies approximately 30 minutes of duration per session.
Behavioral: Cognitive Training
The intervention was carried out with the PC game Brain Exercise TM (Bandai Namco Games Ltd.). Participants held the training sessions on an HP 250 G3 Notebook PC (Windows 10), with a 15-inch screen, and a resolution of 1366x768x40 Hz. The performance achieved by each participant in each session was recorded to analyze the evolution of the subjects. The participants made a total of 12 practice exercises, which implies approximately 30 minutes of duration per session.
Other Names:
  • Cognitive Rehabilitation Therapy
  • Executive Function Training

No Intervention: Control
As a control group, we used nutrition education sessions of approximately the same duration (30 min) where we simply reinforced the knowledge that was already provided during the sessions with the patient, such as concepts about the balanced diet, nutrient composition and micronutrients, etc. The objective of this control group was to avoid the effect of time with the researcher.

Primary Outcome Measures :
  1. Total weight loss percentage [ Time Frame: 12 weeks ]
    Percentage of weight loss from baseline measurement to the end-of-treatment weight, calculated as (baseline weight - weight at week 12)/baseline weight * 100

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 65 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Present a BMI> 27 kg / m2, and want to be part of the study voluntarily

Exclusion Criteria:

  • subjects with diabetes mellitus type 2
  • subjects with a history of a cardiovascular event (acute myocardial infarction, intermittent claudication, etc.)
  • subjects with kidney or liver failure or some other significant pathology (cancer)
  • subjects under pharmacological treatment that could affect body weight (corticoids, thyroxine, etc.)
  • subjects who were on a diet or had been on a diet at least 6 months before their participation in the study were also excluded.

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Responsible Party: Juan Jose Hernández Morante, Professor, Universidad Católica San Antonio de Murcia Identifier: NCT03749772    
Other Study ID Numbers: PMAFI14/12-2
First Posted: November 21, 2018    Key Record Dates
Last Update Posted: November 21, 2018
Last Verified: November 2018

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Juan Jose Hernández Morante, Universidad Católica San Antonio de Murcia:
obesity, cognitive therapy, executive function
Additional relevant MeSH terms:
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Nutrition Disorders
Body Weight
Signs and Symptoms