BPK 143 Chapter Notes -Major Depressive Disorder, Bone Density, Osteoporosis
SchoolSimon Fraser University
DepartmentBiomedical Physio & Kines
Course CodeBPK 143
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1. What is eustress?
1. Positive effects of stress. You grow stronger, and become less vulnerable
to illness or injury
2. Explain why stress is essential to your health.
1. Without any stress, you would be bored into clinical depression. We need
stress to challenge ourselves and accomplish things
3. Discuss the current state of knowledge regarding exercise and longevity.
1. It is difficult to gage it because those who exercise regularly are less likely
to smoke. There are other factors not accounted for.
2. It is accepted that exercise extends life by about 1-3 years
3. Exercise improves the quality of life
4. Describe how a regular physical activity program may slow down the negative
effects of aging. You may need to look back at a few other units to answer this
question more comprehensively.
1. Physical activity will increase bone density. This will reduce the problems
such as osteoporosis that occur when the individual ages
2. As you age, muscle deteriorates causing a great loss of strength. Building
muscle before you age can greatly reduce this loss of strength.
3. Your heart will be larger and stronger; reducing the chances of heart
failure or Cardiovascular disease later in life.
4. Helps decrease chances of obesity which some argue is related to
premature death, heart failure, and cardiovascular disease.
5. Decreases resting blood pressure, which preserves the heart, and reduces
chances of heart attack later in life.
6. Stronger muscles and bones at an old age will decrease the chances of
injuries such as bone fractures, sprains and strains due to acute trauma
7. Physical activity can help an elderly individual maintain balance which
would help protect them from falls
5. Describe the physiological mechanisms by which physical activity may reduce the
occurrence or severity of coronary heart disease.
1. Stronger heart with greater stroke volume and lower RHR. This means
less stress on the heart
2. Increases HDL:LDL ration which reduces risk of heart disease
3. Increased coronary collateral circulation. More arteries in the heart to
supply blood-starved areas
4. Increased coronary artery size
6. Is cholesterol the only blood lipid of concern in determining CVD risk factors?
1. Triglyceride levels in the blood also determine CVD risk. These are often
associated with HDL and LDL levels
7. Is obesity a CVD risk factor? You've read Unit 10 and the textbook, so formulate
your own considered response to this controversial question.
1. Yes, given that the definition of obesity is someone drastically overfat
2. These individuals commonly have higher levels of LDL and lower levels
of HDL which are associated with increased CVD risk
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