“…4,19,26,31,39,51 Studies have investigated the association between PA and overall QoL, and the effects of PA on specifi c domains of QoL, 4,37 and it has often been reported an association with the "physical" and "mental" domains. 19,39,41,42,46,51 Evidence supports a positive association between PA and QoL, but the state of the art is not well established. The magnitude of this association is confl icting in different populations 4,37 and inconsistent results have been found when instruments for measuring PA and QoL, as well as designs, were compared.…”