KNPE 335 - Midterm Flashcards
age trends and projections in canada
increasing number of people age 65 and older and decreasing number of people aged 0-14
What determines trends in senior populations in canada
- Fertility trends
- Migration
- Life expectancy
Why may seniors not inhabit NWT or Nunavut
not good access to resources that seniors need
life expectancy trends
individual life expectancy continues to increase across males and females
4 life span predictions
- decrease in infant mortality rate
- Advances in public health
- plateau of life expectancy
- adding “life to years” instead of “years to life”
Aging and quality of life
-living linger does not mean better
-decreased quality of life: decrease physical, cognitive, mental and social health & increase in common morbidities and comorbidities
what does the fact that people are living longer not better infer
we focus more attention to quantity of life rather than quality of life
gender trends in living longer
males showed more of a desire to live longer
4 things desire to live is associated with
- positive psychological wellbeing
- increase happiness, life satisfaction and purpose
- decrease risk of all cause mortality
- decrease mortality from cancer or suicide
(3 and 4 didnt look at quality of life as a mediator)
chronological age
number of years a person has lived
biological age
a description of individuals development based on biomedical markers that are determined by molecular or cellular events (can change aging progression)
Psychological age
a description of ones own experiences using nonphysical features such as experience, logic and emotion
Social psychological/subjective age
the personal subjective age of a person based on how old the individual feels and how they feel towards age
Social age
the social roles that an individual has placed on them by society that determines their age
Types of functional age
1st age: childhood
2nd age: working and parenting
3rd age: “young old” between 65-84 years
4th age: above 85 years
Functional Age
a combination of chronological, biological, and psychological age. Considered to be the wholistic picture of a persons described age
healthy aging includes a persons ability to:
-meet basic needs
-learn, grow and make decisions
-be mobile
-build and maintain relationships
-contribute to society
Rowe and Kahan 3 main points to successfully age
- Avoiding disease and disability
- High cognitive and physical function
- engagement with life
Fries (1980) compression of morbidity
how much illness has a burden on you is compressed to later in your life (QoL refers to how long you suffer for)
Strawbridge (2002)
in addition to the 3 main points, need to include the effect of chronic conditions and functional difficulties with successful aging
Riechstadt et al (2010)
qualitative interviews on successful aging in older adult perspectives: people who percieve aging as positive are more likely to successfully age
2 categories of aging theory
- Stochastic theories of aging
- programmed theories
stochastic theories of aging
-most prevalent is free radical theory
-metabolic rxns occurring continuously in the body produce unstable molecules called free radicals
-“anti-oxidant vitamins”
-age spots
-random change due to random rxns that create free radicals cause aging
FREE RADICALS -> CELL DAMAGE -> AGING
Non stochastic theories of aging (programmed)
-born with biological clock, programmed time you will die
-aging is predetermined through programmed cells and cell death
Neuroendocrine-Immunilogical theory
-tied to both programmed and free radical theory
-immunity theory of aging (by targetting immune system we can prevent aging)
General Physical Changes with Aging
-increased risk of chronic disease
-decline in lean body mass & bone density
-increased risk of fractures
-increased risk of falls
-impaired oral, eye, ear health
-changes in skin, taste, smell
-geriatric syndromes (dementia, depression …)
broad Changes during aging
-skeletal
-musculature
-vision
-hearing
-vestibular
-joint proprioception
-balance
what is the skeletal system essential for
calcium storage, movement, reduce frailty
starting at 30, progression of various issues to skeletal system such as:
-density/mass of bones begin to diminish
-bones more fragile and more likely to break
-development of osteoporosis/osteoarthritis
-stiffer/less flexible joints
-limited ROM
-collapse of vertebrae
when is bone density decline the highest in women
after menopause
peak muscle strength
-peak muscle strength occurrs at age 20-30
musculature is essential for:
-prevent weakness
-prevent fatigue
-improve ability to perform activities of daily living
-reduce risk of falls and injury
musculature after 30 and into old age
-muscle atrophy (thinning/loss of muscle tissues)
-harder to regenerate muscle
-sarcopenia (loss of muscle)
-muscle fibers cannot contract as quickly
-presence of lipofuscin
-hand and joint tissue becomes tough fibrous tissue
Visual Changes
-occur due to environment, genes, illness/disease, and socioeconomic factors
-1 in 9 canadians experience irreversible vision loss by 65
common visual diseases
-glaucoma (damage to optic n)
-dry eyes
-macular degeneration
-cataracts (cloudy lens)
-diabetic retinopathy
age related change to the pupil
resting pupil diameter decreases
age related change to the lens
lens protein precipitate (cataracts)
age related change to the macula
receptors generate and die, causing loss of central vision
age related change to vitreous humour
changes from gel to liquid, may detach from retina
hearing changes
-prebycusis
-hearing loss: sensorineural, conductive, mixed
prebycusis
-preogressive, multifaceted, age-related hearing loss
-influenced by factors like genetics, environment, trauma, ototoxic medicines
age related changes to ear canal
-potential collapse
-earwax accumulates
age related changes to ossicles
joints between calcify and become thinner
age related changes to the eustachian tube
muscles atrophy
age related changes to the pinna
enlarges with age
vestibular changes with age
-increase frailty
-decrease balance
Joint proprioception and aging
-mechanoreceptors changes, which are located in the joints, capsules, ligaments, muscles, tendons and skin
-impaired/ deterioration of proprioception leading to less accurate detection of body position
**result in increased risk for falls and degenerative joint disease
Balance and aging
-balance disorders result from steady reduction of several systems functions including musculoskeletal, CNS, & sensory system
three fundamental properties of balance
- steadiness
- symmetry
- dynamic stability
what does good balance require?
reliable sensory input form an individuals vision, vestibular system & proprioceptors
Balance disorders in the elderly
-degenerative neuropathy
-decrease nerve conduction velocity
-decrease vestibular function
-visual impairment
-degenerative spinal deformity
-decrease function of tendons/joints
-decrease thigh muscle thickness
3 most common chronic diseases in 65+ age group
- hypertension
- periodontal disease
- Osteoarthritis
10 common chronic diseases among 65+
- hypertension
- periodontal disease
- osteoarthritis
- diabetes
- Ischemic heart disease
- asthma
- mood & anxity disorders
- cancer
- COPD
- osteoporosis
prevlaence trend for chronic diseases
all increase with age except for asthma (decrease)
what is the most important risk factor for chronic disease
aging - due to decline in organ function and system function
Multimorbidity
-the co-occurrance in the same individual of two or more of ten common chronic diseases
-associated with impaired QoL, increased use of health care, institutionalization, adverse health effects, disability and premature death
prevalance of multimorbidity
with increasing age, increasing risk of multimorbidity (positive correlation)
diabetes and aging
-aging increases risk of diabetes (increase insulin resistance and decrease pancreatic repairs)
-management is more complicated in older adults
-cognitive issues
relationship between lifetime risk of cardiovascular disease and age
lifetime risk of cardiovascular disease increases with age with or without risk factors but risk factors increases rate of lifetime risk more
High Blood Pressure (Hypertension)
-most common in older adults
-due to changes in vascular system as one ages
-reduction of elastic tissues, resulting in stiff arteries
**age influences HBP independent of other risk factors
cancer and aging
-aging is a major risk factor for developing cancer
hypothesis of cancer
after 85, cancer risk decreases due to lack of cell growth
Falls
-most common cause of injury in older adults
-one of leading causes of death in older adults
-large cost to healthcare system result from falls
Post fall syndrome
creates a cycle of increasing weakness and instability through joint mobility reductions, physical deconditioning, and poor balance
Fall cycle
- Fall
- loss of balance confidence
- Fear of falling again
- Self restriction of physical activities
- Reduced muscle strength, impaired balance
- abnormal gait, more unstable on feet
- increased risk of falling
REPEAT
compensatory mechanisms walking
-cautious gait
-frozen gait
cautious gait
excessive degree of age-related changes in walking and fear of falling
(slow, wide base, reduced arm swinging)
***usually occurs right after falling
Frozen Gait
-abnormal gate pattern in which there are sudden, short temporary episodes of an inability to move the feet forward despite the intention to walk
-frustrating/annoying
-feet shuffle, then stop but still have intent to move forward so upper body leans increasing risk of falling
***usually occurs a while after falls
Frailty
-increased vulnerability to disease, disability, being dependent and death
-associated with multiple health conditions, reduced mobility & functional decline
5 ways to avoid frailty CFN
activity, vaccinate, optimize medications, interact, diet & nutrition
7 behaviours of a healthy lifestyle
- Exercising
- Eating a diet high in fruits and vegetables
- Not smoking
- Drinking alcohol in moderation
- Getting adequate rest
- Coping with stress
- Having a positive outlook
Basic activities of daily living
things needed to manage basic physical needs
ex
-dressing
-locomotion
-continence
-eating
-transferring
-walking/moving around
instrumental activities of daily living
things to take care of self/home
ex.
-using phone
-traveling
-shopping
-preparing meals
-housework
-taking medicine
**good way to measure independence
5 types of physical activity
- aerobic (endurance)
- Strength
- Flexibility
- Balance
- Functional
Aerobic (endurance) PA
-supplies O2 to brain
-walking, jogging, swimming
-20-30m / day
strength PA
-muscles work more than daily living activities
-weight training, resistance bands etc
flexibility PA
-flexability and stretching for increased freedom of movement for everyday activities and other exercise
-yoga, leg raises, swimming
Balance PA
-strengthens muscle that keeps you upright
-improve stability to prevent falls
Functional PA
-trains muscles to work together
-prepares for daily tasks by reproducing common movements
-various muscles in upper and lower body used at same time
-mimics everyday activities
examples of benefits of PA
-decrease BP
-increase strength and CV endurance
-increase balance
-increase lung and breathing function
-improve immune function
-reduce depression and anxiety
-control obesity
frailty and exercise
-can help improve physical function, minimize and delay age-related declines
-aerobic, muscle strengthening, and multi-component PA programs all demonstrate benefits to frailty
PA benefits related to frailty
-improves ability to perform tasks
-prevents weak bones and muscle loss
-improves joint mobility & sleep quality
-reduces risk of chronic conditions
-extends years of activity and independent living
-lowers risk of demetia
-reduced likelihood of falls
2 types of barriers to activity
- Intrinsic barriers
- Extrinsic barrires
intrinsic barriers
-related to beliefs, motives, and experiences
extrinsic barriers
-related to broader physical activity environment
two main avenues in overcoming barriers
- Reassurance in relation to concerns abt safety, frequency, and intensity
- education of individuals as to what is appropritate PA
controversy of master athletes
one view: can be motivating for people who CAN participate
other view: creates social comparisson because they may not be able to engage also
What is cognition?
set of all mental abilities and processes related to knowledge, attention, memory, judgement and evaluation, reasoning, problem solving, decision making, comprehension, and production of language
Cognitive Health
a brain that can perform all the mental processes that are collectively known as cognition, including learning, intuition, judgement, language and remembering
cognitive non-linear changes that occur during aging
-memory
-attention
-language
-intelligence
-brain changes
-everyday functioning
**can improve and/or decline