Journal
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
Volume 25, Issue 4, Pages e368-e373Publisher
WILEY
DOI: 10.1111/sms.12337
Keywords
Aging; mobility limitation; accelerometer; life-space mobility
Categories
Funding
- Ministry of Education and Culture, Finland
- University of Jyvaskyla, Finland
- Juho Vainio Foundation, Finland
- Academy of Finland [255403, 251723, 263729]
- Finnish Ministry of Education and Culture
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The purpose of this cross-sectional study was to investigate the association between objectively measured physical activity and life-space mobility in community-dwelling older people. Life-space refers to the spatial area a person purposefully moves through in daily life (bedroom, home, yard, neighborhood, town, and beyond) and life-space mobility to the frequency of travel and the help needed when moving through different life-space areas. The study population comprised community-living 75- to 90-year-old people {n=174; median age 79.7 [interquartile range (IQR) 7.1]}, participating in the accelerometer substudy of Life-Space Mobility in Old Age (LISPE) project. Step counts and activity time were measured by an accelerometer (Hookie AM20 Activity Meter) for 7 days. Life-space mobility was assessed with Life-Space Assessment (LSA) questionnaire. Altogether, 16% had a life-space area restricted to the neighborhood when moving independently. Participants with a restricted life space were less physically active and about 70% of them had exceptionally low values in daily step counts (615 steps) and moderate activity time (6.8min). Higher step counts and activity time correlated positively with life-space mobility. Prospective studies are needed to clarify the temporal order of low physical activity level and restriction in life-space mobility.
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