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Endurance and gait speed relationships with mild cognitive impairment and dementia.

TitleEndurance and gait speed relationships with mild cognitive impairment and dementia.
Publication TypeJournal Article
Year of Publication2022
AuthorsWindham BGwen, Parker SB, Zhu X, Gabriel KPettee, Palta P, Sullivan KJ, Parker KG, Knopman DS, Gottesman RF, Griswold ME, Mosley TH
JournalAlzheimers Dement (Amst)
Date Published2022

INTRODUCTION: Slower mobility is associated with mild cognitive impairment (MCI) and dementia. We examined the interaction of endurance with gait speed on prevalent MCI and dementia.

METHODS: Cross-sectional multinomial regression in the ARIC cohort (n = 2844 participants; 71 to 94 years; 44% men; 18% Black persons) with cognitive status (normal/MCI/dementia), 4 m gait speed, and endurance (2 minute walk [2MW]).

RESULTS: Faster gait speed (up to but not above 1 m/s) and better 2MW were separately associated with lower dementia risk. Good performance in both (2MW = 200 m, gait speed = 1.2 m/s) was associated with 99% lower dementia (Relative Prevalence Ratio [RPR] = 0.01 [95% CI: 0.0 to 0.06]) and 73% lower MCI, RPR = 0.27 (0.15 to 0.48) compared to poor performance in both (2MW = 100 m, gait speed = 0.8 m/s). Models incorporating a gait speed-by-2MW interaction term outperformed gait speed-only models ( < .001).

DISCUSSION: Gait speed relationships with dementia diminish at faster gait speeds. Combining endurance with gait speed may yield more sensitive markers of MCI and dementia than gait speed alone.

Alternate JournalAlzheimers Dement (Amst)
PubMed ID35155735
PubMed Central IDPMC8828991
Grant ListU01 HL096812 / HL / NHLBI NIH HHS / United States