Physical activity levels in children and adolescents are reduced after the Fontan procedure, independent of exercise capacity, and are associated with lower perceived general health
- Brian W McCrindle1,
- Richard V Williams2,
- Seema Mital3,
- Bernard J Clark4,
- Jennifer L Russell1,
- Gloria Klein5,
- Joey C Eisenmann6
- 1University of Toronto, The Hospital for Sick Children, Toronto, Ontario, Canada
- 2University of Utah, Salt Lake City, UT, USA
- 3Columbia University Medical Center, New York, NY, USA
- 4Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- 5New England Research Institutes, Watertown, MA, USA
- 6Iowa State University, Ames, IA, USA
- Correspondence to:
Dr Brian McCrindle
The Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, Canada M5G 1X8;
- Accepted 5 February 2007
- Published Online First 16 February 2007
Objectives: To determine physical activity levels in paediatric patients who underwent the Fontan procedure, and their relationship to functional status and exercise capacity.
Study Design: We studied 147 patients (ages 7–18 years) at a median of 8.1 years after Fontan, as part of the Pediatric Heart Network cross-sectional study of Fontan survivors. Assessment included medical history, self-reported physical activity, parent-completed Child Health Questionnaire (CHQ), cardiopulmonary exercise testing and physical activity level measured by accelerometry (MTI Actigraph).
Results: Measured time spent in moderate and vigorous activity was markedly below normal at all ages, particularly in females, and was not significantly related to self-reported activity levels, or to maximum Vo2, Vo2 at anaerobic threshold or maximum work rate on exercise testing. Lower measured activity levels were significantly related to lower perceived general health but not to self-esteem, physical functioning, social impact of physical limitations or overall physical or psychosocial health summary scores. Reduced exercise capacity was more strongly related than measured activity levels to lower scores in general health, self-esteem and physical functioning.
Conclusions: Physical activity levels are reduced after Fontan, independent of exercise capacity, and are associated with lower perceived general health but not other aspects of functional status.
- BMI, body mass index
- CHAT, Congenital Heart Adolescent and Teenage questionnaire
- CHQ, Child Health Questionnaire
- METS, metabolic equivalent tasks
- MPA, moderate physical activity
- MVPA, moderate and vigorous physical activity
- PHN, Pediatric Heart Network
- VAT, ventilatory anaerobic threshold
- Vco2, carbon dioxide production
- Vo2, oxygen consumption
- VPA, vigorous physical activity
Published Online First 16 February 2007
This work was supported by U01 HL068270 (GK), U01 HL068292 (RVW), U01 HL068290 (SM), U01 HL068288 (BWM, JLR) and U01 HL068279 (BJC) from the National Heart, Lung, and Blood Institute, NIH/DHHS.
Competing interests: None.