title: [Vitality, functional age and biological functional age. A contribution to the problem of the time concept in theoretical gerontology].
abstract: With the aid of a vitality concept it is possible to find a relationship between chronological time and functional time of an organism. This relationship allows to calculate the functional time-shift between two organisms which have different parameters of aging.
authors.forename: W
authors.initials: W
authors.lastname: Beier
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D005260:Female; D006801:Humans; D008136:Longevity / Q000502:physiology*; D008297:Male; D015233:Models, Statistical
vernacular_title: Vitalität, funktionelles Alter und biologische Eigenzeit. Ein Beitrag zur Problematik des Zeitbegriffes in der theoretischen Gerontologie.