“…In general, when performing various tasks, older adults tend to take more time, to be less accurate, and to be more variable than younger adults (de Dieuleveult et al, 2017;DeLoss et al, 2013;Guerreiro et al, 2014Guerreiro et al, , 2015Hugenschmidt et al, 2009). The addition of a secondary task tends to decrease task performance more strongly in older adults than in younger adults (Bisson et al, 2014;de Dieuleveult et al, 2017;Mahboobin et al, 2007;Redfern et al, 2001Redfern et al, , 2009. It is well known that the age-related deterioration of, for instance, vision (Kavcic et al, 2011;Owsley, 2011), joint mobility (Yeh et al, 2015), muscle force (Cruz-Jentoft et al, 2010), and balance (Teasdale et al, 1991) all decrease performance of the activities of daily living.…”