Q EMG and Muscle Fatigue 1. 1. Use the data in Table 1 and the Percentage Change Formula (above) to calculate the percent loss of grip strength that occurs between the 0–20 s and 60–80 s intervals. Describe a situation in which such a loss of grip strength is noticeable in your day-to-day life. 2. 2. Use the data in Table 1 to calculate the percent change in amplitude (?mV) in electrical activity that occurs between the 0–20 s and 60–80 s intervals. Do the same for grip strength. What accounts for the difference in the percent change observed in grip strength and ?mV for the two time intervals?
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