Association of speed and cognitive function of the community-dwelling elderly
Objective To explore the association of gait speed and cognitive function of the commu-nity-dwelling elderly.Methods From March to December 2021,a total of 1 172 Xinxiang community-dwell-ing elderly people were investigated by general information questionnaire,mini-mental state examination(MMSE),patient health questionnaire depression scale and 4.6 m gait test.The elderly were divided into five groups based on the quintile grouping of gait speed values,with Q1 group(≤0.76 m/s),Q2 group(0.77-0.88 m/s),Q3 group(0.89-0.98 m/s),Q4 group(0.99-1.11 m/s)and Q5 group(≥1.12 m/s).SPSS 25.0 statistical software was used for descriptive statistics,and binary Logistic regression was used to analyze the influence of gait speed and depression on cognitive impairment of the elderly.Re-sults The gait speed of community-dwelling elderly people was(0.92±0.22)m/s.The scores of MMSE in Q1-Q5 groups were(24.72±3.67),(26.63±2.90),(26.58±2.66),(27.01±2.45)and(27.18±2.35),respectively,and the cognitive function was significantly different among the five gait speed groups(F=27.92,P＜0.05).The results of binary Logistics regression showed that compared with Q1 group,the OR value(95％CI)of cognitive impairment in Q2-Q5 group were 0.475(0.253-0.893),0.426(0.219-0.828),0.421(0.212-0.826)and 0.371(0.179-0.766),respectively,which indicated that fast walking speed was a protective factor for cognitive function.Old age(OR=1.096,95％CI=1.053-1.140)and de-pression(OR=14.441,95％CI=12.670-19.829)were risk factors of cognitive impairment.Conclusion The gait speed is associated with cognitive function among community-dwelling elderly people,and faster gait speed is a protective factor for cognitive function.
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