How did the frequency of stimulation affect amount force generated by isolated skeletal muscle when was increased such that twitches not fully re?
- As the frequency of stimulation increases, the force generated by the muscle also increases. This is because the muscle fibers are able to recruit more motor units and contract more forcefully.
- However, when the frequency of stimulation is too high, the muscle fibers do not have enough time to fully relax between contractions. This can lead to a decrease in force generation, as the muscle fibers become fatigued.
The relationship between stimulation frequency and force output can be demonstrated by a twitch curve, which shows the force output of a muscle at different stimulation frequencies. The twitch curve initially shows a steep increase in force output as the stimulation frequency increases. However, at higher stimulation frequencies, the force output reaches a plateau and then begins to decline. This is due to the fact that the muscle fibers are unable to fully relax between contractions.