Table 1.

Operational definitions of dual cognitive and mobility decline or impairment

Syndrome	Motoric cognitive risk syndrome (Verghese et al. 2013)	Motor and cognitive trajectories before dementia (Montero-Odasso et al. 2018)	Physio-cognitive decline syndrome (Chen et al. 2019)	Dual decline in memory and gait (Tian et al. 2020)
Cognitive function	Subjective cognitive complaint	Faster cognitive decline (MoCA)	Poor cognitive function (any domain)	Faster memory decline (CVLT)
Mobility	Slow gait speed	Faster gait decline	Slow gait speed or weakness	Faster gait decline
Number of assessments overtime required	1	2+	1	2+