title: Barriers to outdoor physical activity and unmet physical activity need in older adults.
abstract: OBJECTIVE
  To profile participants based on reported outdoor physical activity barriers using a data-driven approach, describe the profiles and study their association with unmet physical activity need.
  
  
  METHODS
  Cross-sectional analyses of 848 community-dwelling men and women aged 75-90 living in Central Finland in 2012. Barriers to outdoor physical activity and unmet physical activity need were enquired with a questionnaire. The latent profiles were identified by profiling participants into latent groups using a mixture modeling technique on the multivariate set of indicators of outdoor physical activity barriers. A path model was used to study the associations of the profiles with unmet physical activity need.
  
  
  RESULTS
  Five barrier profiles were identified. Profile A was characterized with minor barriers, profile B with weather barriers, profile C with health and weather barriers, profile D with barriers concerning insecurity, health and weather; and profile E with mobility and health barriers. The participants in the profiles differed in the proportion of individual and environmental barriers. The risk for unmet physical activity need was highest among people whose severe mobility difficulties restricted their outdoor physical activity.
  
  
  CONCLUSIONS
  Outdoor physical activity barriers reflect the imbalance in person-environment fit among older people, manifested as unmet physical activity need.
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: johanna.eronen@jyu.fi.
authors.forename: Johanna
authors.initials: J
authors.lastname: Eronen
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: mikaela.vonbonsdorff@jyu.fi.
authors.forename: Mikaela B
authors.initials: MB
authors.lastname: von Bonsdorff
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: timo.tormakangas@jyu.fi.
authors.forename: Timo
authors.initials: T
authors.lastname: Törmäkangas
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: merja.rantakokko@jyu.fi.
authors.forename: Merja
authors.initials: M
authors.lastname: Rantakokko
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: erja.portegijs@jyu.fi.
authors.forename: Erja
authors.initials: E
authors.lastname: Portegijs
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: anne.viljanen@jyu.fi.
authors.forename: Anne
authors.initials: A
authors.lastname: Viljanen
authors.affiliation: Gerontology Research Center, Department of Health Sciences, P.O. Box 35 (VIV), FI-40014 University of Jyväskylä, Finland. Electronic address: taina.rantanen@jyu.fi.
authors.forename: Taina
authors.initials: T
authors.lastname: Rantanen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D004777:Environment; D004779:Environment Design; D015444:Exercise; D005260:Female; D005387:Finland; D015577:Geriatric Assessment; D006304:Health Status; D006801:Humans; D008297:Male; D051346:Mobility Limitation; D011795:Surveys and Questionnaires; D016138:Walking
keywords: Aging; Mobility; Outdoor environment