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Association of accelerometer-derived step volume and intensity with hospitalizations and mortality in older adults : A prospective cohort study
Mañas, Asier del Pozo Cruz, Borja Ekelund, Ulf Losa-Reyna, José Rodríguez-Gómez, Irene Carnicero Carreño, José Antonio Mañas, Leocadio Rodríguez García-García, Francisco J. Ara, Ignacio
Mañas, Asier
del Pozo Cruz, Borja
Ekelund, Ulf
Losa-Reyna, José
Rodríguez-Gómez, Irene
Carnicero Carreño, José Antonio
Mañas, Leocadio Rodríguez
García-García, Francisco J.
Ara, Ignacio
Abstract
Purpose
This study aimed to examine the associations of accelerometer-derived steps volume and intensity with hospitalizations and all-cause mortality 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, respectively. 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.
Keywords
aging, follow-up, objective, physical activity, walking
Date
2022
Type
Journal article
Journal
Journal of Sport and Health Science
Book
Volume
11
Issue
5
Page Range
578-585
Article Number
ACU Department
Institute for Positive Psychology and Education
Faculty of Health Sciences
Faculty of Health Sciences
Relation URI
Source URL
Event URL
Open Access Status
Published as ‘gold’ (paid) open access
License
File Access
Open
Open
Open