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Innov Aging
Innov Aging
innovateage
Innovation in Aging
2399-5300 Oxford University Press US 

10.1093/geroni/igaa057.2865
igaa057.2865
Abstracts
Session 7195 (Symposium)
AcademicSubjects/SOC02600
The Impact of Fragmented Physical Activity on Physical Function in European Older Adults in the SITLESS Study
Caserotti Paolo 1 Tully Mark 2 Skjodt Mathias 3 Blackburn Nicole 4 Gine-Garriga Maria 5 Planas Laura Coll 6 Denkinger Michael 7 Wilson Jason 2 1 
University of Southern Denmark, Odense M, Syddanmark, Denmark
2 
Ulster University, Newtownabbey, Northern Ireland, United Kingdom

3 
University of Southern Denmark, Odense, Syddanmark, Denmark
4 
Ulster University, Belfast, Northern Ireland, United Kingdom

5 
Ramon Llull University, Barcelona, Catalonia, Spain
6 
Fundacio Salut i Envelliment UAB, Barcelona, Catalonia, Spain
7 
Agaplesion Bethesda Clinic, Ulm, Baden-Wurttemberg, Germany
2020 
16 12 2020 
16 12 2020 
4 Suppl 1 Program Abstracts from The GSA 2020 Annual Scientific Meeting “Turning 75: Why Age Matters”790 791
© The Author(s) 2020. Published by Oxford University Press on behalf of The Gerontological Society of America.2020This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Abstract
Patterns of physical activity (PA) may be associated with physical function independently of total volume. The study aim was to explore associations of PA fragmentation (PAF) and function in ≥65-year-old European adults (SITLESS study: n=1360). The ActiGraph wGT3X+ accelerometer was worn for seven consecutive days at the dominant hip. PAF was assessed as the ratio of the number of ≥10-second PA bouts divided by an individual’s total minutes in PA. Physical function was assessed using the 2-minute maximum walk test (2MWT) and short physical performance battery test (SPPB). Multiple linear regression was utilized adjusting for relevant covariates. Lower PA fragmentation was significantly (p<0.01) associated with longer 2MWT distances and better SPPB scores. The model explained 54% and 41% of the variance in the 2MWT distance and in SPPB score, respectively. Increased PAF seems associated with reduced physical function; independent of sedentary behavior and numerous important health and socio-demographic covariates.