Fortes, L. de S., Ferreira, M.E.C., Laterza, M.C. and Polisseni, M.L. de C. 2011. <b>Youth swimming: association between materials and water activities</b&gt; - doi: 10.4025/reveducfis.v22i2.9602. Journal of Physical Education . 22, 2 (Jul. 2011), 221-228.