Physical Activity and Childhood Obesity
Primary Purpose
Cardiovascular Diseases, Heart Diseases, Obesity
Status
Withdrawn
Phase
Locations
Study Type
Observational
Intervention
Sponsored by
About this trial
This is an observational trial for Cardiovascular Diseases
Eligibility Criteria
No eligibility criteria - Not an applicable clinical trial
Sites / Locations
Outcomes
Primary Outcome Measures
Levels and patterns of physical activity will be measured on all children at ages 11 and 13 to assess relationships with measures of obesity.
In this study, physical activity will be measured using a single-plane accelerometer (CSA model 7164) - a small, lightweight electronic motion sensor attached to the child's belt for a period of 5 days. This instrument gives the capacity to to characterize children's physical activity, and inactivity, more accurately than ever before.
Secondary Outcome Measures
Full Information
NCT ID
NCT00063544
First Posted
June 30, 2003
Last Updated
May 24, 2016
Sponsor
Anna Brooke
Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
1. Study Identification
Unique Protocol Identification Number
NCT00063544
Brief Title
Physical Activity and Childhood Obesity
Official Title
Physical Activity and Childhood Obesity
Study Type
Observational
2. Study Status
Record Verification Date
May 2016
Overall Recruitment Status
Withdrawn
Why Stopped
CI left institution
Study Start Date
May 2003 (undefined)
Primary Completion Date
April 2007 (Actual)
Study Completion Date
April 2007 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor-Investigator
Name of the Sponsor
Anna Brooke
Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
4. Oversight
Data Monitoring Committee
No
5. Study Description
Brief Summary
To measure associations between physical activity and obesity in a large, population-based cohort of children.
Detailed Description
BACKGROUND:
Childhood obesity is rapidly increasing in many countries and environmental factors are the main cause. The onset of puberty may be a critical period. Diet and physical activity are likely to be prime causative factors, although the relative role of each may vary between children of differing age, gender and ethnicity. There are also likely to be many psychosocial and social-demographic factors that can confound these relationships, and these confounders may vary between sub-groups. There continues to be uncertainty regarding the role of these factors and their differential effects in subgroups of the population. It is crucial to develop a better understanding of how dietary and physical activity patterns affect energy balance, and how these characteristics interact with other factors.
Measures of physical activity will be added to ongoing assessments of boys and girls (n=10,000) participating in the Avon Longitudinal Study of Parents and Children (ALSPAC). This comprehensive study has been following children and their parents for about 9-10 years. The study has an extensive database including maternal and paternal social background, lifestyle and habits (including diet and physical activity), medical history and medications during pregnancy and thereafter. ALSPAC has also collected and retained biological samples including maternal blood, urine, cord blood, umbilical cord, placenta, hair and nail clippings, deciduous teeth, child's blood and DNA. Data on the mothers also include details of her own parent's lifestyle, her childhood, lifestyle, occupation history and diet, and access to mother's biological samples. Over 71% of the cohort (>10,000 of 14,541 participants) have been retained.
DESIGN NARRATIVE:
Levels and patterns of physical activity will be measured on all children at ages 11 and 13 to assess relationships with measures of obesity. Physical activity will be measured objectively for 5 days. The data, together with other data collected during pregnancy, infancy and childhood will be used to investigate relationships between modes, intensities, quantities and patterns of physical activity and the development of obesity at this critical stage of life. The strengths of this prospective study are its size, high retention rates and the extensive set of whole-of-life measures already taken on the children. With over 10,000 children expected to attend annually for health checks throughout adolescence, the study will be adequately powered to quantify associations between physical activity and obesity. The study of physical activity in children has to date been seriously restricted because of high levels of measurement error inherent in all self-report measures of physical activity. In this study, physical activity will be measured using a single-plane accelerometer (CSA model 7164) - a small, lightweight electronic motion sensor attached to the child's belt for a period of 5 days. This instrument gives the capacity to to characterize children's physical activity, and inactivity, more accurately than ever before. Comprehensive measurements of diet and body composition (principally Dual-emission X-ray Absorptiometry - DXA) will also be taken at ages 11 and 13 under separate funding.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Cardiovascular Diseases, Heart Diseases, Obesity
7. Study Design
Enrollment
0 (Actual)
Primary Outcome Measure Information:
Title
Levels and patterns of physical activity will be measured on all children at ages 11 and 13 to assess relationships with measures of obesity.
Description
In this study, physical activity will be measured using a single-plane accelerometer (CSA model 7164) - a small, lightweight electronic motion sensor attached to the child's belt for a period of 5 days. This instrument gives the capacity to to characterize children's physical activity, and inactivity, more accurately than ever before.
Time Frame
5 days
10. Eligibility
Sex
All
Minimum Age & Unit of Time
11 Years
Maximum Age & Unit of Time
13 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
No eligibility criteria - Not an applicable clinical trial
Study Population Description
Not an applicable clinical trial
Sampling Method
Non-Probability Sample
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Chris Riddoch
Organizational Affiliation
Bristol University
Official's Role
Principal Investigator
12. IPD Sharing Statement
Learn more about this trial
Physical Activity and Childhood Obesity
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