Temperature, Fatigue & Muscle Contractibility

PART C: EFFECT OF FATIGUE ON MUSCLE ACTION1. Count how many times you can tightly squeeze a rubber ball in your hand in 20 seconds(Alternatively, count how many times you can open and close a spring clothespin with the thumband index finger while the other fingers are held out straight.) Record the result on data table 2 inthe space alongside trial 1.2. Repeat the squeezing test for nine more 20-sec trials, and record your results on data table 2.Do not rest between trials.3. In Part A, what are the three changes you observed in a muscle while it is working(contracted)?1. ________________________________________________________2. ________________________________________________________3. ________________________________________________________4. What effect did the cold temperature have on the action of your hand muscles in Part B?Explain.DATA TABLE 2Effect of fatigue on muscle actionTrial Number Number of Contractions in 20 seconds12345678910