The Association of Physical Activity Fragmentation with Physical Function in Older Adults : Analysis from the SITLESS Study
Wilson, Jason J (Ulster University)
McMullan, Ilona (Ulster University)
Blackburn, Nicole E. (Ulster University)
Klempel, Natalie (Ulster University)
Jerez-Roig, Javier (Universitat de Vic)
Oviedo, Guillermo R. (Universitat Ramon Llull)
Klenk, Jochen (Ulm University (Alemanya))
Dallmeier, Dhayana (Boston University School of Public Health)
Coll-Planas, Laura (Universitat Autònoma de Barcelona. Fundació Salut i Envelliment)
McIntosh, Emma (University of Glasgow)
Skjødt, Mathias (University of Southern Denmark)
Caserotti, Paolo (University of Southern)
Tully, Mark (Ulster University)

Date:	2022
Abstract:	The distribution of physical activity bouts through the day may provide useful information for assessing the impacts of interventions on aspects such as physical function. This study aimed to investigate the associations between physical activity fragmentation, tested using different minimum physical activity bout lengths, with physical function in older adults. The SITLESS project recruited 1360 community-dwelling participants from four European countries (≥65 years old). Physical activity fragmentation was represented as the active-to-sedentary transition probability (ASTP), the reciprocal of the average physical activity bout duration measured using ActiGraph wGT3X+ accelerometers. Four minimum bout lengths were utilised to calculate the ASTP: ≥10-s, ≥60-s, ≥120-s and ≥300-s. Physical function was assessed using the 2-min walk test (2MWT) and the composite score from the Short Physical Performance Battery (SPPB) test. Linear regression analyses, after adjusting for relevant covariates, were used to assess cross-sectional associations. After adjustment for relevant covariates, lower ASTP using ≥10-s bouts were associated with longer 2MWT distances and higher SPPB scores. Lower ASTP using ≥120-s bouts and ≥300-s bouts were associated with longer 2MWT distances but not the SPPB. Less fragmented physical activity patterns appeared to be associated with better physical function in community-dwelling older adults.
Grants:	European Commission 634270
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Older adult ; Accelerometry ; Physical activity ; Fragmentation ; Physical function
Published in:	Journal of ageing and longevity, Vol. 2, Núm. 1 (2022) , p. 63-73, ISSN 2673-9259

DOI: 10.3390/jal2010006

11 p, 293.2 KB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Health sciences and biosciences > Fundació Salut i Envelliment UAB
Articles > Research articles
Articles > Published articles