Random Ex Phys Notes for Final

Pregunta	Respuesta
2 protein filaments responsible for muscle contraction?	myosin and actin
explain the size principle of motor unit recruitment	the order recruitment of motor units is directly related to the size of their motor neuron (motor units w/ smaller neurons are recruited first)
what is the sliding filament theory?	myosin cross-bridge attaches to an actin filament, then the power stroke drags the 3 filaments past each other
where does the oxidative (aerobic) system produce ATP?	Mitochondria
oxidative production of ATP from carbs involves what 3 processes?	glycolysis, the krebs cycle, the electron transport chain
free fatty acids have more CO2 and H2O, but less O2 than glucose. T/F?	true
what is basal metabolic rate (BMR)?	rate of energy expenditure at rest; patient in a supine position, done after 8 h of sleep and a 12 h fasting
what is resting metabolic rate (RMR)?	similar to BMR, but doesn't require stringent standardized conditions
what is maximal O2 uptake (VO2max)?	point at which o2 consumption doesn't increase with further increased intensity
what is lactate threshold?	point at which blood lactate accumulation increases markedly
what is excess post-exercise O2 consumption (EPOC)?	the volume of o2 consumed during the mins immediately after exercise (breathing hard, high HR)
what is required in order to be successful in aerobic endurance exercises?	1. high VO2max 2. high lactate threshold 3. high economy of effort or low VO2 4. high % of type I muscle fibers
principle of individuality	each person responds differently to training; programs should allow for individual variation
principle of specificity	training should be specific to athlete's sport/activity
principle of detraining	training benefits are lost if training is discontinued; "you use or you lose it"
principle of overload	increase demands on body to make improvements
principle of variation	change one or more variables to make training challenging
when developing a program, large muscle groups should be worked before smaller groups. T/F?	true
what are the functions of the cardiovascular system?	delivers o2, removes co2, transports hormones, temperature balance, fluid regulation, acid-base balance
which part of the heart has the most myocardium?	left ventricle
how many grams is considered "protein overfeeding?"	4.4 g per kg per day
what are the 6 nutritional strategies?	1. eat less calories 2. macronutrient % 3. macronutrient sub-types 4. nutrient timing 5. intermittent fasting 6. supplements
DOMS is caused by tears in muscle due to concentric loads. T/F?	false (eccentric loads)
what is the fick equation?	VO2 = Q x AVO2 diff
what is the cardiac output equation?	HR x SV

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	Creado por Lucy Rubio hace casi 8 años