title: Subjective physical and cognitive age among community-dwelling older people aged 75 years and older: differences with chronological age and its associated factors.
abstract: OBJECTIVE
  The aim of this cross-sectional study was to determine the associations between self-reported subjective physical and cognitive age, and actual physical and cognitive functions among community-dwelling older people aged 75 years and older.
  
  
  METHODS
  The sample comprised 275 older adults aged 75-91 years. Two questions were asked regarding subjective age: 'How old do you feel physically?' and 'How old do you feel cognitively?' To assess physical functions, we measured handgrip strength, knee extension strength, standing balance and walking speed. Tests of attention, executive function, processing speed and memory were performed to assess actual cognitive function.
  
  
  RESULTS
  Subjective physical and cognitive age was associated with performance on all of the physical and cognitive tests, respectively (p < 0.01). We also found that older adults who reported themselves as feeling older than their chronological age had a slower walking speed and lower scores for word-list memory recall than those who did not report themselves as feeling older than their actual age.
  
  
  CONCLUSIONS
  These findings suggest that promoting a fast walking speed and good memory function may help to maintain a younger subjective physical and cognitive age in older adults aged 75 years and older.
authors.affiliation: a Department of Physical Therapy, School of Health Sciences , Sapporo Medical University , Sapporo , Japan.
authors.forename: Hikaru
authors.initials: H
authors.lastname: Ihira
authors.forename: Taketo
authors.initials: T
authors.lastname: Furuna
authors.forename: Atsushi
authors.initials: A
authors.lastname: Mizumoto
authors.forename: Keitaro
authors.initials: K
authors.lastname: Makino
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Saitoh
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Ohnishi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shimada
authors.forename: Hyuma
authors.initials: H
authors.lastname: Makizako
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D003071:Cognition / Q000502:physiology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D057187:Independent Living / Q000523:psychology*; D008297:Male; D011939:Mental Recall / Q000502:physiology*; D053580:Muscle Strength / Q000502:physiology; D004856:Postural Balance / Q000502:physiology; D016138:Walking / Q000523:psychology*
keywords: aging; memory function; perceived age; walking speed