Cardiovascular Disease and the Effects of a Cross-curricular Physical Activity Intervention

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: NCT00998478
Recruitment Status : Completed
First Posted : October 20, 2009
Last Update Posted : October 20, 2009
Sports Council Wales
University of Wales Institute Cardiff
Information provided by:
University of Glamorgan

Brief Summary:
The purpose of this study is to investigate the effects of a cross-curricular physical activity intervention on cardiovascular disease risk factors in 11-14 year olds. The null hypothesis states that the intervention will have no effect on cardiovascular disease risk factors.

Condition or disease Intervention/treatment Phase
Cardiovascular Disease Other: Activity Knowledge Circuits Not Applicable

Detailed Description:

Cardiovascular disease is the leading cause of mortality worldwide. Risk factors associated with cardiovascular disease including obesity, blood pressure and blood lipids have been shown to track from childhood through to adulthood. The prevalence of overweight and obesity for children (4-18 years) in the UK is reported to be 15 % and 4 % respectively. Furthermore, in comparison to England (2.9 %) obesity is more prevalent for those living in Scotland (7.6 %) and Wales (6.5 %). Previous research from two Welsh secondary schools indicate overweight and obesity rates for boys and girls aged 12-13 to be even greater at 26 % and 38 % respectively. Further to this, 19 % were identified as having elevated total cholesterol (≥5.2 mmol/L).

For many, overweight and obesity is the result of the combined effect of excess energy consumption and inadequate physical activity. Previous school-based physical activity interventions have demonstrated modest improvements to cardiovascular disease risk factors by implementing extra-curricular activities or improving current physical education curriculum. Few have attempted to increase physical activity using normally, class-room taught curriculum subjects. This study examines the impact of activity knowledge circuits to combat cardiovascular disease risk factors in 11-14 year old children.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 192 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Cardiovascular Disease Risk Factors and the Effects of a Cross-curricular Physical Activity Intervention in 11-14 Year Olds. Activity Knowledge Circuit
Study Start Date : January 2009
Actual Primary Completion Date : July 2009
Actual Study Completion Date : July 2009

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MedlinePlus related topics: Health Checkup
U.S. FDA Resources

Arm Intervention/treatment
Experimental: Activity prescription Other: Activity Knowledge Circuits
The activity knowledge circuits were implemented, where in addition to regular physical education (PE) activity was increased by two hours a week over an 18-week period. Participants briskly walked 3200 m twice weekly during curriculum lessons (60 min). Short tasks, in line with current curriculum, were provided by subject teachers for participants to complete at stations set every 400 or 800 m. Crucially participants continued to follow national curriculum whilst exercising. Tasks designed by teachers lasted no longer than 60 seconds at each station. With the exception of PE, each curriculum subject delivered a total of four intervention lessons. Circuits were performed outdoors on school premises, with an indoor course of equal distance used during adverse weather conditions.
No Intervention: Normal Curriculum
Followed normal curriculum including physical education

Primary Outcome Measures :
  1. Cardiovascular disease risk factors (obesity, blood pressure, blood lipid & lipoprotein) [ Time Frame: 6 Months ]

Secondary Outcome Measures :
  1. Physical activity behaviour and aerobic fitness profile [ Time Frame: 6 Months ]
  2. 7 day diet assessment [ Time Frame: 6 Months ]
  3. Maturation status [ Time Frame: 6 Months ]
  4. Motivation to exercise [ Time Frame: 6 Months ]
  5. Psychological well-being, self concept, and cognitive performance [ Time Frame: 6 Months ]

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Ages Eligible for Study:   11 Years to 14 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Any pupil attending years 7, 8, and 9 of a secondary comprehensive school in South Wales

Exclusion Criteria:

  • Any pupil with an injury or illness that prevented them from taking part in any form of physical activity.

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To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00998478

United Kingdom
Porth County Community School
Porth, Rhondda Cynon Taff, United Kingdom, CF39 0BS
Sponsors and Collaborators
University of Glamorgan
Sports Council Wales
University of Wales Institute Cardiff
Principal Investigator: Gareth J Knox, MSc University of Wales Institute Cardiff

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Gareth Knox, University of Wales Institute Cardiff Identifier: NCT00998478     History of Changes
Other Study ID Numbers: AKC01
First Posted: October 20, 2009    Key Record Dates
Last Update Posted: October 20, 2009
Last Verified: October 2009

Additional relevant MeSH terms:
Cardiovascular Diseases