In the past, it was believed that lactic acid accumulated in the muscles of tracking athletes as a result of intense exertion. For this reason, coaches would have athletes slowly jog to move more oxygen into the muscles so lactic acid would be oxidized and there would be less soreness the next day. Based on current research, what is the most likely consequence of lactate production in the athlete’s performance? What is more likely to be the cause of muscle soreness?

How else could you represent these data? Glycogen Levels in Calf normal Muscle during Treadmill Reported Effort during Treadmill Running extreme Running 75% heavy 50% moderate 25% light 3 0 3 2 time (hours) 1 2 time (hours) On one graph, with the same x-axis and 2 y- axes On one graph, with effort level on the x-axis instead of the y On one graph, with muscle glycogen level on the x-axis instead of the y On one graph, with the same y-axis and 2 x- axes muscle glycogen level O effort level

Resistance (weight) training is recommended as part of an exercise program to lose weight and maintain that weight loss.  Why?

The role of creatine phosphate in muscle cells is to: provide energy for muscles during extended physical activity (greater than 20 minutes) split glucose in two accept electrons "recharge" spent ATP in the first several seconds of a muscle contraction shuttle H atoms to the ETC

A fatigued muscle lacks sufficient oxygen for the aerobic respiration to supply needed ATP. The accumulation of Select one: a. acetic acid occurs and contractions occur with less strength b. lactic acid (lactate) occurs and muscle cramps may set in c. pyruvate occurs and muscle cramps set in d. ethyl alcohol occurs and less frequent contractions occur

Given what you have learned about increasing muscle strength through weight training, why do athletes taper off their training regimen prior to a major competitive event?

Lactic acid that is produced during glycolysis is responsible for muscle fatigue. True False

When the benefits of living in a group are greater than the benefits of defending resources in a particular area, animals are likely to maintain O leks O territories O home ranges O a dominancy hierarchy

Which of the following molecules is important for storage of oxygen in skeletal muscle? Select one:

Considering the Length-Tension Relationship of skeletal muscle fibers, over stretching a muscle fiber or not stretching a muscle fiber enough, results ina decrease in force developed (during contraction) because: 27. A. An "over-stretched" muscle fiber or an “under-stretched" muscle fiber will not allow Calcium, from the sarcoplasmic reticulum, to adequately diffuse into the cytoplasm. B. An "over-stretched" muscle fiber or an "under-stretched" muscle fiber will not allow an optimum amount of contact and overlap for the contractile proteins. C. An "over-stretched" muscle fiber or an“under-stretched" muscle fiber will not allow the Action Potential to reach the troponin-activation channels. D. An "over-stretched" muscle fiber or an "under-stretched" muscle fiber will not allow the Sodium current to depolarize the membrane. Teurons to