Lecture Outline
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Stress Defined
- Stress is the
mental and physical response of our bodies to the changes and challenges
in our lives.
- A Stressor is any physical,
social, or psychological event or condition that causes the body to
adjust to a specific situation.
- Adjustment
is our attempt to cope with a given situation. Attempts to adjust
may cause strain.
- Strain is the
wear and tear our bodies and minds sustain during the process of adjusting
to or resisting a stressor .
- Two major types of stress:
- Eustress is stress
that presents the opportunity for growth and satisfaction.
- Distress is negative
stress that can result in debilitate strain.
The General Adaptation Syndrome (see Figures
3.1,3.2)
- The alarm phase occurs
when homeostasis is disrupted and body prepares for "fight or flight."
- Stressor is interpreted by the cerebral cortex
and triggers the autonomic nervous system.
- The sympathetic branch energizes the body
for fight or flight by signaling the release of several stress
hormones.
- The parasympathetic branch slows the body down
after stress reaction.
- The hypothalamus determines the overall reaction
to stressors.
- Epinephrine secreted by adrenal glands strengthens
heart beat, dilates bronchioles, increases oxygen intake and breathing
rate, stimulates the liver to release more glucose, and dilates
pupils to improve visual sensitivity. Also, blood is moved away
from digestive system, nasal and salivary tissues are affected causing
dry mouth.
- ACTH signals adrenals to release cortisol to make
nutrients more readily available.
- Endorphins, the body's natural opiates, are released
to relieve pain.
- The resistance phase begins
almost immediately after alarm phase starts.
- The body adjusts in order to return to homeostasis.
- The parasympathetic nervous system helps keep energy
levels under control.
- Exhaustion phase
occurs after continuous alarm and resistance reactions.
- Adaptation energy stores are physical and mental
foundations of ability to cope with stress.
- Superficial stores are readily accessible and used
for everyday stressors and can be replenished with aerobic exercise,
relaxation, practicing good nutrition and maintaining supportive
relationships, etc.
- Deep stores are determined by heredity .
- Chronic, unresolved stress leads to the release
of cortisol which can contribute to a reduction in the body's immune
function, resulting in illness that can be minor or life-threatening.
Stress and Your Health
- Stress is often described as "a disease of prolonged
arousal" in which the body is susceptible to long-term effects.
- Chronic stress activation can result in headaches,
asthma, high blood pressure, ulcers, lower back pain, as well as
other medical conditions.
- Research supports the view that mental health is
the most important predictor of physical health.
- Stress contributes to correlates of heart disease.
- Research continues to unlock the effects of stress
on the immune system.
- Psychoneuroimmunology (PNI)
is a relatively young science which is analyzing the relationship
between the mind's response to stress and the ability of the immune
system to function effectively.
- During periods of prolonged stress, elevated
levels of adrenal hormones destroy or reduce the ability of
natural killer T cells to aid in the immune response.
- Other body processes are disrupted and disease-fighting
capacity is reduced.
- A summary of early studies have shown:
- Stress lowers resistance to upper respiratory
infections and herpes.
- Significant stressors have been linked to an
increased risk for chronic ailments.
- High stress times may reduce immune function
and increase risk to illness.
- Grief and depression following the death of
a spouse decreases immune defenses, explaining the increase
in disease among recently widowed folks.
Stress and the Mind
- Stress may be one of the single greatest contributors
to mental disability and emotional dysfunction in the United States
today.
- Low self-esteem and stress together predict depression
and/or anxiety.
- Depression and drug abuse are highly correlated
with excessive stress.
- Low self-esteem and concerns about stress and health
were identified by many college students as unresolved problems.
- Mature coping styles predict happiness, enjoyment,
and absence of addiction.
- People with high nervous tension have increased
risk for mental illness, suicide and CHD.
- Almost half of Americans aged 15-54 will experience
a mental or addictive disorder in their lives.
- Mental illness is on the rise in the U.S.
Sources of Stress
- Psychosocial stress
refers to the factors in our daily lives that cause stress. These factors
include such things as our interactions with others, expectations, social
conditions of work and play, etc.
- Change
always produces stress. The more change experienced, the more stress.
- The Social Readjustment Rating
Scale (SRRS) predicts stress overload
and the likelihood of illness. This scale focuses on major sources
of stress.
- The SRRS has been used as a
model for the development of a scale for college students. The
more of these stressors a student has the more their situation
needs to change before problems occur.
- Hassles are
petty annoyances, irritations, and frustrations, such as losing
keys, having a grocery bag rip, etc., that can build up and be harmful
in the long run.
- Pressure
occurs when we feel forced to speed up, intensify , or shift the
direction of behavior to meet a higher standard of performance.
It is based on goals -or peer influences.
- Disparity
between our goals and our behaviors can magnify negative stress.
- Conflict
occurs when we are forced to make difficult decisions concerning
two or more competing motives, behaviors, or impulses or when forced
to face incompatible demands, opportunities, needs or goals.
- Overload occurs
when you suffer from excessive time pressure or expectations of
yourself and those around you.
- Burnout
is a state of mental and physical exhaustion caused by excessive
stress.
- Other forms of psychosocial stress
include problems with discrimination, prejudice, inflation, unemployment,
poverty, etc.
- Environmental stress
results from events occurring in our physical environment.
- Environmental stressors include
natural disasters, chemical spills, earthquakes.
- Background distressors include
noise and air pollution. It make take many years before we become
aware of the effect of these background distressors.
- Self-imposed
stress.
- Self-concept is a component of
stress.
- The cognitive stress system
governs our response to stressors.
- Self-esteem is closely related
to past stressful experiences.
- Personality types
and hardiness.
- Freidman and Rosenman identified
Type A and Type B personalities.
- Type A
are hard driving, competitive, anxious, and time driven.
- Type B
are relaxed and noncompetitive.
- Problems with these types are:
- Most people are not one personality
type all the time.
- There are many unexplored variables
such as thriving in a stressful environment.
- Type C
personalities are said to succeed with good health in stressful
environments.
- Researchers have identified a "toxic
core" in Type A personalities that promotes cynicism, anger,
hostility , and below average levels of social support.
- Psychological hardiness helps many
with Type A behavior negate the negative effects of self-imposed
stress. Psychologically hardy people are characterized by the three
Cs:
- A sense of control, accepting
responsibility for their behaviors and changing behaviors that
are debilitating.
- A sense of commitment which
helps with self-esteem and understanding their purpose in life.
- A sense of challenge, seeing
changes in life as stimulating opportunities for personal growth.
- Self-efficacy
and control.
- Self-efficacy is belief in one's
own skills and performance abilities.
- People who believe they lack control
more frequently give up.
Stress and The College Student
- There are many stressors associated with being a student
- Females and males differ significantly in what
they perceive to be significant stressors.
- There are several symptoms of stress that can indicate
stress overload (see stressors in Table on p. 60, text).
Stress Management
- Building skills to reduce stress.
- You need to assess whether or not you can change
the stressor or your response.
- Change stress response with cognitive
coping strategies that involve being gradually exposed to
increasingly higher stress levels.
- Learn to cope with stress
inoculation, which is to prepare for potentially stressful
events ahead of time by practicing the behaviors that may help to
reduce the negative consequences of stress.
- Many people are downshifting
which involves taking a step back and simplifying their lives.
- Managing emotional responses to stressful situations
can help in stress management.
- Examine self-talk.
- Learn to control and redirect anger (see Figure
3.3).
- Taking mental action in stress management involves
two things:
- Developing and practicing positive self-esteem
skills.
- Develop mental skills to deal with stress as it
occurs.
- Changing the way you think about stressful situations
can help.
- Physical action can help alleviate stress.
- Exercise can help get rid of excess stress hormones.
- Relaxation can have opposite effect of stress response.
- Eating right can help in stress management.
- Managing time is an essential aspect of stress management.
- Four alternative stress management techniques are
as follows:
- Hypnosis frees right brain hemisphere in order
to become responsive to suggestions
- Massage helps relax muscles initiating the relaxation
response.
- Meditation generally focuses on deep breathing
and quiet concentration.
- Biofeedback is a way to self-monitor physiological
responses to stress in order to control them.
Developing you Spiritual Side : Mindfulness
- As a meditative technique, mindfulness can aid relaxation,
reduce emotional or physical pain, and help individuals connect more
effectively with others.
- Mindfulness can include strategies and activities that
contribute to overall health.
- Moving in nature helps to combine physical fitness
with the peace found in the beauty of nature.
- Dealing with negative feelings by noticing what
causes them and blocking thoughts to keep them from recurring.
- Develop the ability to give and take, speak and
listen, forgive and move on.
- Actively listening to others can help us develop
better social bonds.
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