A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Physical activity scaled to preferred walking speed as a predictor of walking difficulty in older adults : a 2-year follow-up (2022)


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


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Karavirta, Laura; Leppä, Heidi; Rantalainen, Timo; Eronen, Johanna; Portegijs, Erja; Rantanen, Taina

Lehti tai sarja: Journals of Gerontology Series A : Biological Sciences and Medical Sciences

ISSN: 1079-5006

eISSN: 1758-535X

Julkaisuvuosi: 2022

Ilmestymispäivä: 30.09.2021

Volyymi: 77

Lehden numero: 3

Artikkelin sivunumerot: 597-604

Kustantaja: Oxford University Press (OUP)

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1093/gerona/glab277

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/78016


Tiivistelmä

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.


YSO-asiasanat: ikääntyneet; liikuntarajoitteet; ennusteet; fyysinen aktiivisuus; kävely; askelmittarit

Vapaat asiasanat: disablement; mobility limitation; exercise intensity; physical performance; accelerometer; cut-point


Liittyvät organisaatiot


Hankkeet, joissa julkaisu on tehty


OKM-raportointi: Kyllä

Raportointivuosi: 2022

JUFO-taso: 3


Viimeisin päivitys 2024-22-04 klo 21:40