Abstract
The exercise tolerance of Fontan patients is poorer than that of healthy people. Some previous studies reported that exercise tolerance can be improved in this population by cardiac rehabilitation. This study aimed to determine the factors associated with peak oxygen uptake (VO2) and to subsequently clarify the correlation between participation in sports club activities and variables related to exercise tolerance. Cardiopulmonary exercise tests were performed by 115 Fontan patients aged between 6 and 20years. The patients completed questionnaires on their daily physical activities including participation in extracurricular sports clubs in middle (junior high school) and high school. Peak VO2 had a significant negative correlation with age and a positive correlation with hemoglobin, stroke volume, and resting tidal volume in the entire study group. Additionally, the sports club participants who were middle and high school students had significantly higher peak VO2 and resting tidal volume. Exercise habits including participation in sports club activities may promote exercise tolerance by improving respiratory function in Fontan adolescents.
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