Purpose:This study aimed to examine the associations of accelerometer-derived steps volume and intensity with hospitalizations and all-cause mortal-ity in older adults.Methods:This prospective cohort study involved 768 community-dwelling Spanish older adults(78.8±4.9 years,mean±SD;53.9％females)from the Toledo Study for Healthy Aging(2012-2017).The number of steps per day and step cadence(steps/min)were derived from a hip-mounted accelerometer worn for at least 4 days at baseline.Participants were followed-up over a mean period of 3.1 years for hospitalization and 5.7 years for all-cause mortality.Cox proportional hazards regression models were used to estimate the individual and joint associations between daily steps and stepping intensity with hospitalizations and all-cause mortality.Results:Included participants walked 5835±3445 steps/day with an intensity of 7.3±4.1 steps/min.After adjusting for age,sex,body mass index(BMI),education,income,marital status and comorbidities,higher step count(hazard ratio(HR)=0.95,95％confidence interval(95％CI:0.90-1.00,and HR=0.87,95％CI:0.81-0.95 per additional 1000 steps)and higher step intensity(HR=0.95,95％CI:0.91-0.99,and HR=0.89,95％CI:0.84-0.95 per each additional step/min)were associated with fewer hospitalizations and all-cause mortality risk,respec-tively.Compared to the group having low step volume and intensity,individuals in the group having high step volume and intensity had a lower risk of hospitalization(HR=0.72,95％CI:0.52-0.98)and all-cause mortality(HR=0.60,95％CI:0.37-0.98).Conclusion:Among older adults,both high step volume and step intensity were significantly associated with lower hospitalization and all-cause mortality risk.Increasing step volume and intensity may benefit older people.

Asier Ma?as;Borja del Pozo Cruz;Ulf Ekelund;José Losa Reyna;Irene Rodríguez Gómez;José Antonio Carnicero Carre?o;Leocadio Rodríguez Ma?as;Francisco J.García García;Ignacio Ara

GENUD Toledo Research Group,University of Castilla-La Mancha,Toledo 45071,Spain;CIBER of Frailty and Healthy Aging(CIBERFES),Madrid 28029,Spain;Motivation and Behaviour Research Program,Institute for Positive Psychology and Education,Faculty of Health Sciences,Australian Catholic University,Sydney,NSW2060,Australia;Department of Sports Medicine,Norwegian School of Sport Sciences,Oslo 0806,Norway;Department of Chronic Diseases and Ageing,Norwegian Institute of Public Health,Oslo 0473,Norway;Geriatric Department,Hospital Virgen del Valle,Toledo 45071,Spain;Geriatric Department,Hospital Universitario de Getafe,Getafe 28905,Spain

运动与健康科学（英文）

[1]Asier Ma?as;Borja del Pozo Cruz;Ulf Ekelund;José Losa Reyna;Irene Rodríguez Gómez;José Antonio Carnicero Carre?o;Leocadio Rodríguez Ma?as;Francisco J.García García;Ignacio Ara-.Association of accelerometer-derived step volume and intensity with hospitalizations and mortality in older adults:A prospective cohort study)[J].运动与健康科学（英文）,2022(05):578-585

Toledo

Association,accelerometer,derived,volume,intensity,hospitalizations,mortality,older,adults,prospective,cohort,study,Purpose,This,aimed,examine,associations,steps,all,cause,Methods,involved,community,dwelling,Spanish,years,mean,females,from,Study,Healthy,Aging,number,cadence,were,hip,mounted,worn,least,days,baseline,Participants,followed,over,period,Cox,proportional,hazards,regression,models,used,estimate,joint,between,daily,stepping,Results,Included,participants,walked,After,adjusting,age,sex,body,mass,education,income,marital,status,comorbidities,higher,count,ratio,confidence,interval,additional,each,associated,fewer,risk,respec,tively,Compared,group,having,individuals,had,lower,Conclusion,Among,both,significantly,Increasing,may,benefit,people

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