Cargando…
Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults
(1) Background: The purpose of this study was to evaluate the day-to-day variability and year-to-year reproducibility of an accelerometer-based algorithm for sit-to-stand (STS) transitions in a free-living environment among community-dwelling older adults. (2) Methods: Free-living thigh-worn acceler...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8471908/ https://www.ncbi.nlm.nih.gov/pubmed/34577275 http://dx.doi.org/10.3390/s21186068 |
_version_ | 1784574588714221568 |
---|---|
author | Löppönen, Antti Karavirta, Laura Portegijs, Erja Koivunen, Kaisa Rantanen, Taina Finni, Taija Delecluse, Christophe Roie, Evelien Van Rantalainen, Timo |
author_facet | Löppönen, Antti Karavirta, Laura Portegijs, Erja Koivunen, Kaisa Rantanen, Taina Finni, Taija Delecluse, Christophe Roie, Evelien Van Rantalainen, Timo |
author_sort | Löppönen, Antti |
collection | PubMed |
description | (1) Background: The purpose of this study was to evaluate the day-to-day variability and year-to-year reproducibility of an accelerometer-based algorithm for sit-to-stand (STS) transitions in a free-living environment among community-dwelling older adults. (2) Methods: Free-living thigh-worn accelerometry was recorded for three to seven days in 86 (women n = 55) community-dwelling older adults, on two occasions separated by one year, to evaluate the long-term consistency of free-living behavior. (3) Results: Year-to-year intraclass correlation coefficients (ICC) for the number of STS transitions were 0.79 (95% confidence interval, 0.70–0.86, p < 0.001), for mean angular velocity—0.81 (95% ci, 0.72–0.87, p < 0.001), and maximal angular velocity—0.73 (95% ci, 0.61–0.82, p < 0.001), respectively. Day-to-day ICCs were 0.63–0.72 for number of STS transitions (95% ci, 0.49–0.81, p < 0.001) and for mean angular velocity—0.75–0.80 (95% ci, 0.64–0.87, p < 0.001). Minimum detectable change (MDC) was 20.1 transitions/day for volume, 9.7°/s for mean intensity, and 31.7°/s for maximal intensity. (4) Conclusions: The volume and intensity of STS transitions monitored by a thigh-worn accelerometer and a sit-to-stand transitions algorithm are reproducible from day to day and year to year. The accelerometer can be used to reliably study STS transitions in free-living environments, which could add value to identifying individuals at increased risk for functional disability. |
format | Online Article Text |
id | pubmed-8471908 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-84719082021-09-28 Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults Löppönen, Antti Karavirta, Laura Portegijs, Erja Koivunen, Kaisa Rantanen, Taina Finni, Taija Delecluse, Christophe Roie, Evelien Van Rantalainen, Timo Sensors (Basel) Communication (1) Background: The purpose of this study was to evaluate the day-to-day variability and year-to-year reproducibility of an accelerometer-based algorithm for sit-to-stand (STS) transitions in a free-living environment among community-dwelling older adults. (2) Methods: Free-living thigh-worn accelerometry was recorded for three to seven days in 86 (women n = 55) community-dwelling older adults, on two occasions separated by one year, to evaluate the long-term consistency of free-living behavior. (3) Results: Year-to-year intraclass correlation coefficients (ICC) for the number of STS transitions were 0.79 (95% confidence interval, 0.70–0.86, p < 0.001), for mean angular velocity—0.81 (95% ci, 0.72–0.87, p < 0.001), and maximal angular velocity—0.73 (95% ci, 0.61–0.82, p < 0.001), respectively. Day-to-day ICCs were 0.63–0.72 for number of STS transitions (95% ci, 0.49–0.81, p < 0.001) and for mean angular velocity—0.75–0.80 (95% ci, 0.64–0.87, p < 0.001). Minimum detectable change (MDC) was 20.1 transitions/day for volume, 9.7°/s for mean intensity, and 31.7°/s for maximal intensity. (4) Conclusions: The volume and intensity of STS transitions monitored by a thigh-worn accelerometer and a sit-to-stand transitions algorithm are reproducible from day to day and year to year. The accelerometer can be used to reliably study STS transitions in free-living environments, which could add value to identifying individuals at increased risk for functional disability. MDPI 2021-09-10 /pmc/articles/PMC8471908/ /pubmed/34577275 http://dx.doi.org/10.3390/s21186068 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Communication Löppönen, Antti Karavirta, Laura Portegijs, Erja Koivunen, Kaisa Rantanen, Taina Finni, Taija Delecluse, Christophe Roie, Evelien Van Rantalainen, Timo Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults |
title | Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults |
title_full | Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults |
title_fullStr | Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults |
title_full_unstemmed | Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults |
title_short | Day-to-Day Variability and Year-to-Year Reproducibility of Accelerometer-Measured Free-Living Sit-to-Stand Transitions Volume and Intensity among Community-Dwelling Older Adults |
title_sort | day-to-day variability and year-to-year reproducibility of accelerometer-measured free-living sit-to-stand transitions volume and intensity among community-dwelling older adults |
topic | Communication |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8471908/ https://www.ncbi.nlm.nih.gov/pubmed/34577275 http://dx.doi.org/10.3390/s21186068 |
work_keys_str_mv | AT lopponenantti daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT karavirtalaura daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT portegijserja daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT koivunenkaisa daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT rantanentaina daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT finnitaija daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT deleclusechristophe daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT roieevelienvan daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults AT rantalainentimo daytodayvariabilityandyeartoyearreproducibilityofaccelerometermeasuredfreelivingsittostandtransitionsvolumeandintensityamongcommunitydwellingolderadults |