Effect of a congested match schedule on immune-endocrine responses, technical performance and session-RPE in elite youth soccer players - Moreira, Alexandre; Bradley, Paul Simon; Carling, Christopher; Arruda, Ademir Felipe Schultz de; Spigolon, Leandro Mateus Pagoto; Franciscon, Clovis A; Aoki, Marcelo Saldanha (Journal of Sports Sciences, 2016)