Relationship of cognition and structured grocery shopping in older adults with and without mild cognitive impairment

Objective measurements of movement using wearable technology during real-world activities, such as grocery shopping, may be a digital biomarker of cognitive and physical function. As cognition declines, in particular executive functioning, the overall accelerations and speed of rotational movements particularly at the head may reflect more significant changes in cognition. Future studies are needed in community grocery stores to assess free-living IADLs to determine if such activities can be used as a digital biomarker of cognitive, motoric, and functional decline.