Physical activity scaled to preferred walking speed as a predictor of walking difficulty in older adults : a 2-year follow-up
Karavirta, L., Leppä, H., Rantalainen, T., Eronen, J., Portegijs, E., & Rantanen, T. (2022). Physical activity scaled to preferred walking speed as a predictor of walking difficulty in older adults : a 2-year follow-up. Journals of Gerontology Series A : Biological Sciences and Medical Sciences, 77(3), 597-604. https://doi.org/10.1093/gerona/glab277
Julkaistu sarjassa
Journals of Gerontology Series A : Biological Sciences and Medical SciencesTekijät
Päivämäärä
2022Oppiaine
BiomekaniikkaGerontologia ja kansanterveysGerontologian tutkimuskeskusHyvinvoinnin tutkimuksen yhteisöBiomechanicsGerontology and Public HealthGerontology Research CenterSchool of WellbeingTekijänoikeudet
© The Author(s) 2021. Published by Oxford University Press on behalf of The Gerontological Society
of America.
Background
The usual accelerometry-based measures of physical activity (PA) are dependent on physical performance. We investigated the associations between PA relative to walking performance and the prevalence and incidence of early and advanced walking difficulties compared to generally used measures of PA.
Methods
Perceived walking difficulty was evaluated in 994 community-dwelling participants at baseline (age 75, 80 or 85 years) and two years later over two kilometers (early difficulty) and 500 meters (advanced difficulty). We used a thigh-mounted accelerometer to assess moderate-to-vigorous PA, daily mean acceleration and relative PA as movement beyond the intensity of preferred walking speed in a 6-minute walking test (PArel). Self-reported PA was assessed using questionnaires.
Results
The prevalence and incidence were 36.2 % and 18.9 % for early, and 22.4 % and 14.9 % for advanced walking difficulty, respectively. PArel was lower in participants with prevalent (mean 42 (SD 45) vs. 69 (91) mins/week, p<0.001) but not incident early walking difficulty (53 (75) vs. 72 (96) mins/week, p=0.15) compared to those without difficulty. The associations between absolute measures of PA and incident walking difficulty were attenuated when adjusted for preferred walking speed.
Conclusions
The variation in habitual PA may not explain the differences in the development of new walking difficulty. Differences in physical performance explain a meaningful part of the association of PA with incident walking difficulty. Scaling of accelerometry to preferred walking speed demonstrated independence on physical performance and warrants future study as a promising indicator of PA in observational studies among older adults.
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Julkaisija
Oxford University Press (OUP)ISSN Hae Julkaisufoorumista
1079-5006Asiasanat
Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/101313172
Metadata
Näytä kaikki kuvailutiedotKokoelmat
- Liikuntatieteiden tiedekunta [2919]
Rahoittaja(t)
Suomen Akatemia; Euroopan komissioRahoitusohjelmat(t)
Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA; Akatemiahanke, SA
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Lisätietoja rahoituksesta
This work was supported by the European Research Council (grant number ERC AdvG 693045 to TaR); the Academy of Finland (grant number 310526 to TaR, and 321336, 328818 to TiR); and the Finnish Ministry of Education and Culture (to EP).Lisenssi
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