Which of the following is the best explanation of the relationship shown in the graphs below? Glycogen Levels in Calf Muscle during Treadmill Running Reported Effort during Treadmill Running normal extreme 75%- heavy- 50%- moderate- 25% light- 0 2 3 0 2 3 time (hours) time (hours) At extreme levels of effort, glycogen levels are normal At light levels of effort, glycogen levels are at 25% At light levels of effort, glycogen levels are at normal At extreme levels of effort, glycogen levels are at 75% muscle glycogen level O effort level

Explain in a paragraph why ice should not be applied prior to exercise. What specific things can be negatively affected?

A primary mechanism of fatigue during 4 repeated bouts of 25-second intervals performed at high-intensity is likely  _______________?     heat accumulation     Pi depletion      H+ accumulation     glycogen depletion

What are limiting factors for steady-rate aerobic metabolism? Select 3 correct answer(s) Fluid loss Adequate reserves of liver and muscle glycogen O Electrolyte depletion Capacity of circulatory system to main perfusion throughout the body

One of the physiologic effects of heat acclimatization is a more rapid process of evaporative cooling earlier in exercise.     True    False Decreases in weightlifting capacity as we age tend to follow a curvilinear trend.     True    False

The following graph is simulated (but realistic) data from a VO₂max trial of a human athlete running (no gait changes). Estimate and label the following variables: VO2 (ml/kg/min) 1. VO₂max 2. Incremental cost of locomotion 3. Maximum aerobic speed 4. RMR + postural costs 70 60 50 40 30 20 10 0 2 3 4 5 6 7 8 9 10 11 12 13 MPH

Delayed onset muscle soreness caused by lactate. is is not select this choice if the answer depends on the duration of exercise.

During maximal exercise RER will not rise above 1.0 due to the buffering of lactic acid which provides additional CO2 above that produced from the use of carbohydrates:   Group of answer choices True False

If one engages in a 6-month endurance training program employing all aspects of the F.I.T.T.-R. approach, which of the following changes would be observed compared to the untrained (pre-training) state?  Select ALL that are likely to be true.     a. An increase in skeletal muscle citrate synthase enzyme activity    b. Measurable increases in mood state    c. A large (>50%) decrease in resting blood lactate concentration   d. An increase in skeletal muscle gluconeogenic potential    e. An increase in cardiac muscle mitochondrial number   f. An increase in skeletal muscle cytochrome oxidase activity

If someone is on a heart-rate limiting medication, what is the best way to track exertion to ensure safety?     Karvonen method   Just ask questions   Measure lactate threshold   Rating of perceived exertion