“…Studies in this category reporting a medium or large effect of concurrent load used a range of physical and cognitive tasks, for example, computer tasks (Ekberg et al, 1995;Birch et al, 2000;Alkjaer et al, 2005), active workstations (Frodsham et al, 2020;Schellewald et al, 2021), and handgrip (Guillery et al, 2013); in combination with Stroop Color Word tests (Ekberg et al, 1995;Alkjaer et al, 2005;Schellewald et al, 2021), visual memory tasks (Guillery et al, 2013) or instructions needed to perform the physical task (Birch et al, 2000;Nino et al, 2020). Studies reporting no or small effects typically used a physical task adopted from an occupational setting, such as pipetting (Srinivasan et al, 2015(Srinivasan et al, , 2016, assembly (Biondi et al, 2021), and computer work (Ekberg et al, 1995;Birch et al, 2000;Laursen, Jensen and Ratkevicius, 2001), in combination with instructions needed to perform the physical task (Srinivasan et al, 2015(Srinivasan et al, , 2016, n-back (Biondi et al, 2021), and Stroop Color Word tests (Ekberg et al, 1995;Laursen et al, 2002).…”