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Understanding Human Aging Chapter 1 Copyright 2014 American College of Sports Medicine Outline Definition of aging

Biological theories of aging Concept of successful aging Physical activity and successful aging Copyright 2014 American College of Sports Medicine

Definitions of age and the aging process Chronological age Biological age Psychological age Social age

Copyright 2014 American College of Sports Medicine Chronological age Length of time or passage of calendar time Human agingimportant to consider

a broader perspective Copyright 2014 American College of Sports Medicine Copyright 2014 American College of Sports Medicine

Biological age Age-related changes in biological or physiological processes Biological age assessment Copyright 2014 American College of Sports Medicine

Copyright 2014 American College of Sports Medicine Psychological age Age-related changes in mental or

cognitive functioning assessment of psychological aging Copyright 2014 American College of Sports Medicine

Copyright 2014 American College of Sports Medicine Social age Social roles and expectations Assessment Copyright 2014 American College of Sports Medicine

Copyright 2014 American College of Sports Medicine Biological theories of aging Large number of theories have been proposed

Increasingly likely that aging is not caused by a single mechanism Copyright 2014 American College of Sports Medicine Biological theories of aging (cont.)

Cellular theories of aging Genetic theories of aging Control theories of aging Copyright 2014 American College of Sports Medicine

Cellular theories of aging Degenerative changes that occur at the microscopic level of analysis free-radical oxidation

cross-links Copyright 2014 American College of Sports Medicine Genetic theories of aging Age-related changes can be attributed

to genetic mechanisms Hayflick limit Telomere Copyright 2014 American College of Sports Medicine

Control theories of aging Function of specific physiologic systems known to be vital for controlling our bodies ability to respond to stressors T-cell activity Major histocompatibility complex (MHC)

Immune system Copyright 2014 American College of Sports Medicine Successful aging The rate and the extent of functional decline: differences between individuals

Physical activity Benefits of physical activity for the individual persons Societal benefits of promoting physically active lifestyles among older person

Copyright 2014 American College of Sports Medicine Copyright 2014 American College of Sports Medicine Copyright 2014 American College of Sports Medicine

Copyright 2014 American College of Sports Medicine Copyright 2014 American College of Sports Medicine Key Points Defining aging requires a broad perspective of

chronological, biological, psychological, and social aspects. Aging is a complex process in which multiple biological mechanisms are acting at the molecular, cellular, and system levels. It makes difficult to identify a single unified theory of biological aging.

Large scientific evidence links physical activity participation to successful aging. Copyright 2014 American College of Sports Medicine

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