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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01267097
Other study ID # PCWH01-2009
Secondary ID CIHR-MSH83715
Status Completed
Phase N/A
First received December 16, 2010
Last updated February 19, 2014
Start date September 2010
Est. completion date January 2014

Study information

Verified date February 2014
Source University of Alberta
Contact n/a
Is FDA regulated No
Health authority Canada: Ethics Review Committee
Study type Interventional

Clinical Trial Summary

The Canadian pediatric obesity epidemic has led to great interest in evaluating weight management care for obese children and families. Investigation is warranted since obesity is linked to risk factors for chronic diseases including type 2 diabetes mellitus (T2DM) and cardiovascular disease (CVD). Over the past 25 years, many interventions have studied the role of healthy lifestyle behaviours to help obese children achieve and maintain a healthy weight. A contemporary view of pediatric weight management interventions includes parents as a fundamental recipient of treatment. These interventions recognize the influence parents have on the lifestyle behaviours of their children. While such parent-based interventions have helped establish the role of education and behavioural theory in facilitating lifestyle changes, we believe an equally important intervention element is a focus on the role of cognitions in helping to interpret behaviour change and change maintenance. Our study incorporates cognitive behaviour theory (CBT) into an intervention for parents of obese children and compares it to a more traditional modality based on psycho-education (PEP).

Hypothesis: Obese 8 - 12 year old children (n=45) whose parents complete a 16-session, group-based, CBT intervention will achieve greater reductions in adiposity as well as improvements in physiological risk factors for T2D, lifestyle behaviours, and psychosocial outcomes at post-intervention as well as 6- and 12-months follow-up versus children (n=45) whose parents complete a 16-session, group-based, psycho-education intervention .

Primary Objective: To compare the impact of two weight management interventions (CBT versus PEP) for parents of obese children on child BMI z-score.

Secondary Objective: To measure a comprehensive set of physiological, behavioural and psychosocial outcomes in obese children and parents pre- and post-intervention.

We expect obese children whose parents complete the CBT intervention will experience greater reductions in BMI z-score vs. children whose parents complete the PEP intervention. We anticipate that improvements in parenting style, family stress, and lifestyle behaviours will be important to improve adiposity, lifestyle behaviours, and risk factors for T2DM and CVD in obese children.


Recruitment information / eligibility

Status Completed
Enrollment 63
Est. completion date January 2014
Est. primary completion date September 2013
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Both
Age group 8 Years to 12 Years
Eligibility Inclusion Criteria: Boys and girls (n = 90) between 8 - 12 years of age with a sex- and age-specific BMI =95th percentile are eligible for this study. Children are referred to the Pediatric Centre for Weight and Health (PCWH) at the Stollery Children's Hospital (SCH) (Edmonton, AB, Canada) only if their BMI percentile meets or exceeds this threshold. At least one parent/guardian per family is required to participate in one of the two group-based interventions as agents of change for their family.

Exclusion Criteria: Obese children referred to the PCWH <8 years old will be referred to an outpatient dietitian for nutrition counselling; obese boys and girls >12 years old will be eligible for other weight management interventions at the PCWH. Children who do not have a parent/guardian interested in participating or possess an age- and sex-specific BMI <95th percentile will be ineligible. Children diagnosed with an endocrine disorder (i.e., Polycystic Ovarian Syndrome, Prader-Willi Syndrome, hypothyroidism) will be referred to the Endocrine Clinic at the SCH. Parents or children who are identified at screening as having severe mental health conditions or psychosocial circumstances that could limit their ability to participate in the interventions will be referred to appropriate agencies and services. Impaired ability to participate in either intervention may include substantial difficulties in attendance or implementing changes at home. Referral services may include psychological/psychiatric services, welfare services, and private nutrition or exercise counselling. Dr. Rachel Keaschuk (PCWH Psychologist and Co-I) will perform psychological interviews (75 - 90 minutes) with all families to determine family appropriateness and will lead family discussions regarding referral services (if indicated).

Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator, Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


Intervention

Behavioral:
Cognitive Behavioural Therapy (CBT)
Clinical research supports the use of CBT-based interventions in weight management for adults and children. However, the current study will advance the existing knowledge-base by combining CBT with the parents as agents of change approach for pediatric weight management. CBT is a theoretically-based therapy that focuses on the role that cognitive processes play in the maintenance of problem behaviours, mood states, and habits. CBT highlights the relationship between thoughts, feelings and actions, and utilizes techniques involving motivation, goal-setting, problem-solving, and knowledge/skill acquisition that can facilitate sustainable behaviour changes.
Psycho-Education Program (PEP)
PEP is a knowledge-based intervention that is modelled after traditional nutrition and health education programs. Research has demonstrated that knowledge based programs can improve health behaviours and outcomes in overweight and obese populations. In relation to CBT, PEP is a more passive intervention and there is limited focus on active skill building. While PEP does not represent a true control group, its content and delivery are consistent with what many clinicians provide for weight management.

Locations

Country Name City State
Canada Pediatric Centre for Weight and Health Edmonton Alberta

Sponsors (3)

Lead Sponsor Collaborator
University of Alberta AHS Cancer Control Alberta, Canadian Institutes of Health Research (CIHR)

Country where clinical trial is conducted

Canada, 

Outcome

Type Measure Description Time frame Safety issue
Primary Child BMI Z-score Pre-intervention No
Primary Child BMI Z-score post-intervention No
Primary Child BMI Z-score 6-months post-intervention No
Primary Child BMI Z-score 12-months post-intervention No
Secondary Lifestyle behaviours Nutrition (4-day food records; child and parent) and physical activity (7-day pedometer logs; child and parent) behaviours Pre-intervention No
Secondary Parental stress Parental stress index (PSI) Pre-intervention No
Secondary Cardiometabolic risk factors Blood pressure, fasting glucose, fasting insulin, HDL-C, LDL-C, total cholesterol, triglycerides (child only) Pre-intervention No
Secondary Family functioning Family Adaptability and Cohesion Scale-IV (FACES-IV); completed by parents Pre-intervention No
Secondary Lifestyle behaviours Nutrition (4-day food records; child and parent) and physical activity (7-day pedometer logs; child and parent) behaviours post-intervention No
Secondary Lifestyle behaviours Nutrition (4-day food records; child and parent) and physical activity (7-day pedometer logs; child and parent) behaviours 6-months post-intervention No
Secondary Lifestyle behaviours Nutrition (4-day food records; child and parent) and physical activity (7-day pedometer logs; child and parent) behaviours 12-months post-intervention No
Secondary Parental stress Parental stress index (PSI) post-intervention No
Secondary Parental stress Parental stress index (PSI) 6-months post-intervention No
Secondary Parental stress Parental stress index (PSI) 12-months post-intervention No
Secondary Cardiometabolic risk factors Blood pressure, fasting glucose, fasting insulin, HDL-C, LDL-C, total cholesterol, triglycerides (child only) post-intervention No
Secondary Cardiometabolic risk factors Blood pressure, fasting glucose, fasting insulin, HDL-C, LDL-C, total cholesterol, triglycerides (child only) 6-months post-intervention No
Secondary Cardiometabolic risk factors Blood pressure, fasting glucose, fasting insulin, HDL-C, LDL-C, total cholesterol, triglycerides (child only) 12-months post-intervention No
Secondary Family functioning Family Adaptability and Cohesion Scale-IV (FACES-IV); completed by parents post-intervention No
Secondary Family functioning Family Adaptability and Cohesion Scale-IV (FACES-IV); completed by parents 6-months post-intervention No
Secondary Family functioning Family Adaptability and Cohesion Scale-IV (FACES-IV); completed by parents 12-months post-intervention No
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