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Define Stroke Volume - ANSWER the volume of blood the heart
ejects with each beat.
How does SV increase with workload? - ANSWER Similar to
HR, it increases as workload increases but only up to ~40% to 60% of
VO2max. The percentages can be decreases in sedentary individuals
and increased with training.
What happens to resting HR as stroke volume increases? - ANSWER
it decreases, as more blood being pumped per beat allows the heart to
beat less often.
How many calories in 1 gram of:
carb
protein
fat
alcohol - ANSWER 1 g carbs- 4 calories
1 g protein- 4 calories
1g fat- 9 calories
1g alcohol- 7 calories
energy intake for carbs, protein and fat - ANSWER 45 - 65% of daily
energy intake; 70% for athletes; 4 cal/gram
10-15% of daily intake; .8 g/kg of body wt.; athletes may need 1.2
- 1.4 for endurance and 1.6-1.7 for strength; 4 cal/gram
,3 abnormal curves of the spine - ANSWER hyperkyphosis,
hyperlordosis, scoliosis
Pregnant women need an additional ____ calories per day -
ANSWER 150 cal per day then 300cal in the 3rd trimester
avoid exercising in the ______ position after week _____ -
ANSWER Supine position after week 16
pregnant women need as increase dietary need for.... - ANSWER
folic acid (B vitamin to prevent serious birth defects) and iron.
Vitamin D intake have increased for? what are the levels? -
ANSWER all populations but particularly children and older adults
(65+).
children and adolescents 1-18 600 IU
Older adults 800IU
Coronary Artery disease - ANSWER accounts for the most
cardiovascular deaths. The most prevalent types of CVD.
Define athlerosclerosis - ANSWER process where fatty streaks
develop, causing the artery wall the thicken while reducing the luminal
diameter. begins with a focal injury to the lining of the artery and
eventually causes damage to the endothelium. The endothelium then
becomes more permeable to lipids , allowing LDL's to move easily
through where they are oxidized by macrophages. creating fatty
streaks and plaque formation begins.
Define myocardial ischemia - ANSWER partial impairment of
,coronary artery artery blood flow reduces oxygen to cardiac
tissue.
Define myocardial infarction - ANSWER hEART ATTACK.
results in heart tissue death.
stable ischemia vs. unstable ischemia - ANSWER stable: result of
increased O2 demand of the heart (as seen with exercise) increased
chest pain (angina) and decreased exercise capacity because of reduced
blood supply to the heart. unstable: more severe often seen at rest with
time of little exertion and oxygen demand. May be a warning sign that
a heart attack is imminent.
Hypertension is also known as _____ - ANSWER The silent
killer because the signs and symptoms go unnoticed.
BP is regulated by 2 factors: - ANSWER Cardiac Output and
total peripheral vascular resistance (narrowing of vessels)
3 most common metabolic diseases/disorders - ANSWER
Diabetes
Hyperlipidemia
Obesity
Type 1 and type 2 diabetes are defined by - ANSWER a decrease in
the production, release and/or effectiveness and action of insulin. Both
results in increased blood glucose levels.
(hyperglycemia) type 1: deficiency in blood insulin release. type
2: elevated blood glucose levels due to developed insulin
resistance
, What is cardiac output? - ANSWER a measure of blood pumped
per minute. The product of stroke volume and heart rate.
What does Diastolic Blood pressure do during exercise? -
ANSWER Remains stable or decreases slightly.
What is rate pressure product? - ANSWER serves as an estimate of
myocardial oxygen demand. Product of HR and
Systolic BP. HR X SBP
What is the Fick equation used to determine VO2 max? -
ANSWER VO2max = HRmax X SVmax X a-VO2 difference max
(arteriovenous oxygen difference)
What is the gold standard to measure Cardiorespiratory fitness? -
ANSWER VO2 max during open circuit spirometry.
How does a submaximal exercise test work? - ANSWER It estimates
VO2 max from the HR response to submaximal single stage or graded
exercise.
absolute oxygen consumption vs. relative oxygen consumption -
ANSWER absolute is the raw volume of O2 consumed by the body.
Relative is the volume of O2 consumed relative to body weight. Useful
to compare fitness levels between individuals.
What is one of the largest components of PA-related energy
expenditure? - ANSWER Occupational Physical Ativity