Associations of monitor-assessed activity with performance-based physical function
The purpose of this study was to investigate the cross-sectional associations of monitorderived measures of sedentary time and physical activity with performance-based physical function in healthy Australian adults. Data from 602 participants (mean age 58.1 ±10.0 years; 58% female) from the 2011/12...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Public Library of Science
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/20436 |
| _version_ | 1848750304445595648 |
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| author | Reid, N. Daly, R. Winkler, E. Gardiner, P. Eakin, E. Owen, N. Dunstan, D. Healy, Genevieve |
| author_facet | Reid, N. Daly, R. Winkler, E. Gardiner, P. Eakin, E. Owen, N. Dunstan, D. Healy, Genevieve |
| author_sort | Reid, N. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The purpose of this study was to investigate the cross-sectional associations of monitorderived measures of sedentary time and physical activity with performance-based physical function in healthy Australian adults. Data from 602 participants (mean age 58.1 ±10.0 years; 58% female) from the 2011/12 wave of the Australian Diabetes, Obesity and Lifestyle (AusDiab3) study were analyzed. The thigh-worn activPAL3™ monitor (7-days continuous wear) was used to derive time during waking hours spent: sitting/reclining; standing; and, stepping (overall, and separately as light [<3 METs] and moderate-to-vigorous physical activity [MVPA; =3 METs]), and number of sit-stand transitions. Associations of these (in hours/day, or 15 transitions/day) with physical function measures (8ft Timed Up and Go [TUG-8; log-transformed seconds] and Knee Extensor Strength [KES; kg]) were tested via linear regression, adjusting for confounders. Interactions by sex and age-category (<45; 45-54; 55-64; =65 years) were tested. In all participants, KES was significantly (p<0.05) associated with stepping and MVPA stepping only; none of the activity measures were associated with TUG-8. However, subgroup analysis revealed that in older adults (=65 years), TUG-8 was associated with stepping and MVPA stepping (both p<0.05). All associations with sitting time, standing, sit-stand transition and sex interactions were not statistically significant. In summary, sitting time was not significantly associated with impaired muscle strength or gait/mobility in Australian adults aged 36-80 years, but light- to moderate activity (stepping) was positively associated with muscle strength, and gait/mobility in older adults aged =65 years. The direction of causation is not known and remains important to investigate considering the high prevalence of both poor function and limited activity in older age. |
| first_indexed | 2025-11-14T07:34:42Z |
| format | Journal Article |
| id | curtin-20.500.11937-20436 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:34:42Z |
| publishDate | 2016 |
| publisher | Public Library of Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-204362017-09-13T13:51:44Z Associations of monitor-assessed activity with performance-based physical function Reid, N. Daly, R. Winkler, E. Gardiner, P. Eakin, E. Owen, N. Dunstan, D. Healy, Genevieve The purpose of this study was to investigate the cross-sectional associations of monitorderived measures of sedentary time and physical activity with performance-based physical function in healthy Australian adults. Data from 602 participants (mean age 58.1 ±10.0 years; 58% female) from the 2011/12 wave of the Australian Diabetes, Obesity and Lifestyle (AusDiab3) study were analyzed. The thigh-worn activPAL3™ monitor (7-days continuous wear) was used to derive time during waking hours spent: sitting/reclining; standing; and, stepping (overall, and separately as light [<3 METs] and moderate-to-vigorous physical activity [MVPA; =3 METs]), and number of sit-stand transitions. Associations of these (in hours/day, or 15 transitions/day) with physical function measures (8ft Timed Up and Go [TUG-8; log-transformed seconds] and Knee Extensor Strength [KES; kg]) were tested via linear regression, adjusting for confounders. Interactions by sex and age-category (<45; 45-54; 55-64; =65 years) were tested. In all participants, KES was significantly (p<0.05) associated with stepping and MVPA stepping only; none of the activity measures were associated with TUG-8. However, subgroup analysis revealed that in older adults (=65 years), TUG-8 was associated with stepping and MVPA stepping (both p<0.05). All associations with sitting time, standing, sit-stand transition and sex interactions were not statistically significant. In summary, sitting time was not significantly associated with impaired muscle strength or gait/mobility in Australian adults aged 36-80 years, but light- to moderate activity (stepping) was positively associated with muscle strength, and gait/mobility in older adults aged =65 years. The direction of causation is not known and remains important to investigate considering the high prevalence of both poor function and limited activity in older age. 2016 Journal Article http://hdl.handle.net/20.500.11937/20436 10.1371/journal.pone.0153398 Public Library of Science unknown |
| spellingShingle | Reid, N. Daly, R. Winkler, E. Gardiner, P. Eakin, E. Owen, N. Dunstan, D. Healy, Genevieve Associations of monitor-assessed activity with performance-based physical function |
| title | Associations of monitor-assessed activity with performance-based physical function |
| title_full | Associations of monitor-assessed activity with performance-based physical function |
| title_fullStr | Associations of monitor-assessed activity with performance-based physical function |
| title_full_unstemmed | Associations of monitor-assessed activity with performance-based physical function |
| title_short | Associations of monitor-assessed activity with performance-based physical function |
| title_sort | associations of monitor-assessed activity with performance-based physical function |
| url | http://hdl.handle.net/20.500.11937/20436 |