3. How did the frequency of stimulation affect the amount of force generated by the isolated skeletal muscle when thefrequency of stimulation was increased such that the muscle twitches did
not
fully relax between subsequent stimuli? Arethese results called treppe or wave summation? How well did the results compare with your prediction?Your answer:When the stimulation frequency was increased to the point in which muscle relaxation did not occur the amount of forceprogressively increased with each stimulus. When muscle twitches overlap, no muscles relax, and stimuli occurs one afteranother in a short amount of time, the muscle contraction is higher than if a single stand alone contraction had occurred. Myprediction was correct and this is known as wave summation.4. To achieve an active force of 5.2 g, did you have to increase the stimulus voltage above 8.5 volts? If not, how did youachieve an active force of 5.2 g? How well did the results compare with your prediction?Your answer:No, I didn't have to increase the stimulus voltage above 8.5 volts. In order to achieve an active force of 5.2g the stimulineeded to be delivered in rapid succession in a short amount of time and not allowing for full relaxation of the muscle. Inorder to get 5.2g of active force, wave summation needed to occur.5. Compare and contrast frequency-dependent wave summation with motor unit recruitment (previously observed byincreasing the stimulus voltage). How are they similar? How was each achieved in the experiment? Explain how each isachieved
in vivo
.Your answer:Frequency-dependent wave summation is dependent upon stimulation by the nervous system. The motor recruitmentdepends upon the number of motor fibers available