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1 Healty aging I
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what is the life course trajectory of bodily functions?
- normal development and decline
- exposure in early life may leave imprints on structures or functions of body systems
- exposure acting in mid or in later life accelerating age-related decline -
What are the definitions of age?
- chronoligical age: measured in units of time
- biological age: where people stand relative to the years they will live
- functional age: persons competence in carrying out specific tasks in comparison with pears
- psychological age: refers to how well a person adapts to changing conditions
- social age: views held by most members of a society about what the individuals in a particular age group should do and behave
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What are the ages in the chronological age?
- young-olds: 65-74
- old-old: 75-84
- oldest-old 85+
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What are the theoretical models of aging?
- the selective optimization with compensation model of aging
- the ecological model of aging
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what is the selective optimization with compensation model of aging?
individuals engage in adaptions, and rely on reserve capacity that they do not use under normal circumstances- Selection
a strategy of concentrating efforts on domains in which effective functioning is most likely to remain high - optimization
a strategy of focusing on the behaviours that maximize quantity and quality of life - compensation
refers to substituting new strategies when losses occur
- Selection
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What is the ecological model of aging?
- the interaction between a persons competence and environment results in some level of adaptation (measured in persons well-being)
- competence
physical, sensory, cognitive and social capabilities - A person with high competence will adapt positively to a wider range of environmental press than a person with low competence
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What are the theories of biology of aging?
- primary aging
- secondary aging
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What is primary aging? (programmed theories)
- unevitable biological process
- is set in motion early in life
- is intrinsic
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what is secondary aging? (stochastic theories)
- experienced by most but not necessary by all
- resulting from hostile environmental influences
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what are the programmed theories?
- time clock theory
- immune theory
- evolutionary theory
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