S3.6-18. Cordina R, O Meagher S, Gould H, et al. Skeletal muscle abnormali- ties and exercise capacity in adults with a Fontan circulation. Heart. 2013;99:1530 4. S3.6-19. Cordina RL, O Meagher S, Karmali A, et al. Resistance train- ing improves cardiac output, exercise capacity and tolerance to positive airway pressure in Fontan physiology. Int J Cardiol. 2013;168:780 8. S3.6-20. Longmuir PE, Brothers JA, de Ferranti SD, et al. Promotion of physical activity for children and adults with congenital heart di- sease: a scientific statement from the American Heart Association. Circulation. 2013;127:2147 59. S3.6-21. Buys R, Van De Bruaene A, Budts W, et al. In adults with atrial switch operation for transposition of the great arteries low physical activity relates to reduced exercise capacity and decreased perceived phys- ical functioning. Acta Cardiol. 2012;67:49 57. S3.6-22. Winter MM, van der Bom T, de Vries LCS, et al. Exercise train- ing improves exercise capacity in adult patients with a sys- temic right ventricle: a randomized clinical trial. Eur Heart J. 2012;33:1378 85. 3.7. Mental Health and Neurodevelopmental Issues S3.7-1. Kovacs AH, Saidi AS, Kuhl EA, et al. Depression and anxiety in adult congenital heart disease: predictors and prevalence. Int J Cardiol. 2009;137:158 64. CLINICAL STATEMENTS AND GUIDELINES S3.7-2. Kovacs AH, Sears SF, Saidi AS. Biopsychosocial experiences of adults with congenital heart disease: review of the literature. Am Heart J. 2005;150:193 201. S3.7-3. van Rijen EHM, Utens EMWJ, Roos-Hesselink JW, et al. Psychosocial functioning of the adult with congenital heart disease: a 20 33 years follow-up. Eur Heart J. 2003;24:673 83. S3.7-4. Callus E, Quadri E, Ricci C, et al. Update on psychological func- tioning in adults with congenital heart disease: a systematic review. Expert Rev Cardiovasc Ther. 2013;11:785 91. S3.7-5. Amianto F, Bergui G, Abbate-Daga G, et al. 