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17 Cards in this Set
- Front
- Back
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define exercise physiology
define adaptation define responce |
-the description and explanation of a body's adaptations and responces to exercise
a bodys physiological change during an acute bought of exercise the body's long lasting phyiological change as a result of chronic exercise |
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List what a person can change in exercise, and what they can't
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can change intensity, frequency, duration.
Can't change gender, genetics, (somewhat age, fitness level) |
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One thing that increases in a trained person is
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sweat
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list parts of muscle from outer to inner
fasiculi are . . . sarolema is |
epimyosin
perimysium endomyosin fiber bundle cytoplasm of muscle |
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where is calcium located in the muscle
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in terminal cisternae, next to t-tubule
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Roles and importance of ATP?
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is split after binding on myosin (myosinatpase). relaxation can't happen without ATP.
ATP is not most energy rich, but it the only thing to be able to bin to myosin. Is limited though |
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Describe making ATP
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cytosolic from ADP (from myosin splitting ATP), and CP make ATP and creatine
Myokinase rxn is 2 ADP (enzyme is myokinase) creating ATP and AMP glycolysis, krebs, and in mitochondria, ETC |
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describe glycolysis
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glucose is a good starting substance, regular source from diet. Muscle takes it from blood to store as glycogen. Will use PFK to phosphorolase into glucose, makes 4 ATP
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define exercise science
define sports medicine |
study of human movements use to maintain or improve physical fitness
The branch of medicine that deals with injuries or illnesses resulting from participation in sports and athletic activities. |
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define lactate threshold
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A rapid increase in blood lactate levels as intesity increases (50 to 60 vo2 max in untrained, 65 to 80 in trained), from increasing reliance on anaerobic metabolism
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what enzyme converts pyruvate into lactic acid
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LDH
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what is OBLA
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A common term related to lactate threshold, standing for onset of blood lactate accumulation. Differs because it is the EXERCISE INTESITY at which blood lactate levels reach 4 millimoles per mm.
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what is the ratio exchange ratio
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the ratio of carbon dioxcide output to volume of oxygen consumed. can be used to determine % of fat or carb used as fuel by this. when fat is oxidized co2 produced. fat oxidation requires more o2. Lower R is fat, higher is carb
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.What causes change from fats for energy to carbs with increased intensity?
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recrutment of fast fibers, and increasing blood levels of epinephrine (increases muscle glycogen breakdown, and lactate production. Lactate inhibits fat met, by decreasing availability of fat as a substrate)
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duration on exercise?
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longer=more fat met.
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PFK
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used to phosphorolase. If decreases, store glycogen in muscle. Regulates glycolysis, citric acid (from krebs) and fatty acids inhibit it, and an increase of ADP and AMP will increase it. As CP decreases, it will increase PFK too.
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PDH
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helps pyruvic acid move into mitochonria, also removes CO2
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