Essay On The Effect Of Temperature On Maximum Contraction

732 Words 3 Pages
Temperature can affect the rate at which an action potential is generated to excite an action potential within a given skeletal muscle. Maximum contraction is the ability of the muscle to recruit and produce its greatest force during a contraction, and we can observe these effects by using a grip force transducer, which records the functional grip force of the hand. Therefore, the purpose of this lab was to discern how varying temperatures affect maximum contraction. I hypothesized that; cold temperatures will decrease the rate of muscle fatigue and provide for a longer max contraction, while hot temperatures will increase the rate of muscle fatigue and decrease the length of a sustained max contraction.

The grip force transducer was calibrated, and a period of stable baseline and maximal force production was established, as the subject was instructed to squeeze the force grip transducer as hard as possible for 2-5 seconds. The subject was then allowed to view the computer screen to aid in maintaining their maximal grip force, and they were instructed
…show more content…
Heated temperatures may close ion channels faster, and increase the rate at which a muscle contracts. Edwards, et. al (2012) also observed increased rates of muscle contraction in response to a heated muscle, and they conclude that the increased rate was due to the depletion of local ATP resources that are needed for continued muscle contraction. As we can see, alterations in ion permeability can significantly alter or affect a max contraction as cold temperatures may reduce the rate at which ATP is depleted and provide for greater sustainability of maximum contractile forces. On the other hand, heated temperatures may have the exact opposite affect as Edwards demonstrated in his

Related Documents