“…Nine studies of older adults with MCI were eligible (Kounti et al, 2011;Lam et al, 2015;Delbroek et al, 2017;Park, 2017;Donnezan et al, 2018;Mrakic-Sposta et al, 2018;Park et al, 2019Park et al, , 2020Rojasavastera et al, 2020), with 217 participants in the combined intervention group, 41 in the single cognitive intervention group, and 176 in the sham intervention group. Regarding the study design, eight studies were RCTs (Lam et al, 2015;Delbroek et al, 2017;Park, 2017;Donnezan et al, 2018;Mrakic-Sposta et al, 2018;Park et al, 2019Park et al, , 2020Rojasavastera et al, 2020) and one study was NRCT (Kounti et al, 2011). Regarding the modes of combined intervention, seven studies included simultaneous combined cognitive and physical training (Kounti et al, 2011;Delbroek et al, 2017;Park, 2017;Donnezan et al, 2018;Mrakic-Sposta et al, 2018;Park et al, 2019Park et al, , 2020 and two studies performed sequential combined intervention (Lam et al, 2015;Rojasavastera et al, 2020), all of which reported greater cognitive improvements in the combined intervention.…”