title: Exercise, sedentary pastimes, and cognitive performance in healthy older adults.
abstract: BACKGROUND
  Moderately vigorous physical activity (MVPA) provides a protective affect against cognitive decline and cardiovascular risk factors. Less is known about sedentary pastimes or non exercise physical activity (NEPA) and cognitive performance.
  
  
  METHODS
  125 healthy adults 65 or older with no clinical evidence of cognitive impairment were enrolled. The CogState computerized neurocognitive battery was administered. Leisure activities were measured using the Community Health Activity Program for Seniors (CHAMPS).
  
  
  RESULTS
  Sedentary pastimes were associated with executive dysfunction (P = 0.01); MVPA with high memory scores (P = 0.05) and NEPA with improved working memory (P = 0.05). Only sedentary pastimes and executive dysfunction retained significance after correction for multiple comparisons. Smoking and alcohol confounded the association of memory with sedentary pastimes and MVPA.
  
  
  CONCLUSIONS
  Study highlights: negative impact of sedentary pastimes on executive function, need for additional investigation of sedentary behavior, NEPA, the impact of addictions upon activity in late life.
authors.affiliation: Department of Psychiatry, Crozer Chester Medical Center, One Medical Center Boulevard, Upland, PA, USA susanne.steinberg45@gmail.com.
authors.forename: Susanne Inez
authors.initials: SI
authors.lastname: Steinberg
authors.affiliation: Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Mary Dupuis
authors.initials: MD
authors.lastname: Sammel
authors.affiliation: CogState Inc, New Haven, CT, USA.
authors.forename: Brian Tal
authors.initials: BT
authors.lastname: Harel
authors.affiliation: CogState Inc, Melbourne, Australia.
authors.forename: Adrian
authors.initials: A
authors.lastname: Schembri
authors.affiliation: Department of Recreation, University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Policastro
authors.affiliation: Center for Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Hillary R
authors.initials: HR
authors.lastname: Bogner
authors.affiliation: Department of Geriatric Psychiatry, University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Selamawit
authors.initials: S
authors.lastname: Negash
authors.affiliation: Department of Geriatric Psychiatry, University of Pennsylvania, Philadelphia, PA, USA.
authors.forename: Steven Edward
authors.initials: SE
authors.lastname: Arnold
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D056344:Executive Function / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology*; D009043:Motor Activity / Q000502:physiology*; D057185:Sedentary Behavior
keywords: aging; cardiovascular risk factors; cognition; exercise; physical activity; sedentary
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