Effects of different physical exercises on leptin concentration in obese adolescents - Ackel-D'Elia, C.; Carnier, J.; Bueno Júnior, Carlos Roberto; Campos, R. M. S.; Sanchez, P. L.; Clemente, A. P. G.; Tufik, S.; Mello, M. T. de; Dâmaso, A. R. (International Journal of Sports Medicine, 2014)