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International Archives of Occupational and Environmental Health

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Open Access 29-07-2023 | Original Article

Longitudinal profiles of occupational physical activity during late midlife and their association with functional limitations at old age: a multi-cohort study

Authors: Kyrönlahti Saila, Nygård Clas-Håkan, K. C. Prakash, Neupane Subas

Published in: International Archives of Occupational and Environmental Health | Issue 9/2023

Abstract

Objective

The aim was to examine longitudinal profiles of occupational physical activity (OPA) from midlife to retirement and to investigate how the different OPA-profiles are associated with mobility limitations (ML) and activities of daily living (ADL-disability) at old age.

Methods

Harmonized data from two cohort studies from Finland and the United States, that have followed people from midlife until old age were used. Repeated measurements of self-reported OPA were collected during approximately 11- to 12-year period. Persons who had data on OPA from ≥ 2 time points during the period from mid-working life to retirement were included. Latent class growth analysis was used to identify OPA-profiles. Risk ratios (RRs) with 95% confidence intervals for the associations of the OPA-profiles and later life MLs and ADL-disability were estimated.

Results

Three OPA-profiles were identified in both cohorts: high-persistent, moderate-fluctuating, and low-persistent. For majority OPA remained stable: for workers reporting high or low levels of OPA at midlife, the physical demands of work likely persisted, whereas people reporting moderate level OPA had high fluctuation in their exposure level. Members of high-persistent and moderate-fluctuating OPA-profiles had increased risk of subsequent MLs at old age. The RRs for ADL-disability did not differ between the profiles.

Conclusions

Perceived OPA remains rather stable for workers reporting high or low physical work demands during midlife, yet fluctuating profiles also exist. Workers exposed to high or moderate OPA have higher risk for MLs when they reach old age. Establishing safe and health-promoting levels of OPA during late working life might have positive long-term consequences on healthy ageing.

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Title: Longitudinal profiles of occupational physical activity during late midlife and their association with functional limitations at old age: a multi-cohort study
Authors: Kyrönlahti Saila
Nygård Clas-Håkan
K. C. Prakash
Neupane Subas
Publication date: 29-07-2023
Publisher: Springer Berlin Heidelberg
Published in: International Archives of Occupational and Environmental Health / Issue 9/2023
Print ISSN: 0340-0131
Electronic ISSN: 1432-1246
DOI: https://doi.org/10.1007/s00420-023-02003-5

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Longitudinal profiles of occupational physical activity during late midlife and their association with functional limitations at old age: a multi-cohort study

Abstract

Objective

Methods

Results

Conclusions

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Abstract

Objective

Methods

Results

Conclusions

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