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Module 3 Electromyography lab with data

Module 3 Electromyography  lab with data

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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1. The grip strength for 0-20 sec is 190.3 and the grip strength for 60-80 sec is 119.9 .The difference between the two mean strength will be (190.3-119.9) = 70.4 Thus the percentage decrease will be 70.4 *100/190.3 =36.99 A loss in grip strength is noticeable if we play golf long day ,there will be muscle fatigue in the hands.2.is 1.66-1.53=0.13. Thus the percentage change will be 0.13 *100/1.53 = 8.496. The percent change in grip strength is 36.99 . The muscle is sending signals to work much harder to produce the same grip as before because it is out of energy.