17 - 15Grip Strength and Muscle FatigueTable 3Slope Part I–Continuous gripping-2.0153Part II–Repetitive gripping-.47673DATA ANALYSIS1.Examine your graph and the data in Table 1. What conclusion can you draw about the number of individual muscle fibers that are firing in the last 10 s compared with the first 10 s?
17 - 16Human Physiology with Vernier2.Is the change in number of muscle fibers that contract occurring at a constant rate?3.Use your knowledge of fast, slow, and intermediate skeletal muscle fibers to hypothesize which fibers are contracting in the first, third, and final 10 s intervals.4.How might you explain the subject’s response to coaching? This should be evident in the last nervous system, in addition to the muscle fibers.5.Compare the slopes recorded in Table 3. Give a possible explanation for the difference, if any, in muscle fatigue rates seen in continuous versus repetitive gripping.