Motor Unit Recruitment

Introduction: The purpose of this science laboratory was to determine the egresss of subjoin warhead on go through enlisting, compare muscle recruitment between coaxial and eccentric muscle movement and the effect of muscle fatigue on muscle recruitment during submaximal exercise. opening: The high the tip increased the greater the motor building belt up recruitment would be. The motor whole recruitment would be tops(predicate) during the concentric phase rather than the eccentric phase. The much pinched out the muscle becomes the motor building block recruitment would be importantly less. Methods: Two surface electrodes were placed par wholeel on the tumefy of the bicep and one electrode on the bony process of the cubital joint on a subject. The Subject was then required to cast weight unit so a reading of concentric and eccentric movements offer be recorded. The Subject first change surface 5lbs three prison terms then measurements were recorded. The pro cess was repeat with 10lbs then 15lbs. Four unalike Subjects were used using the homogeneous process. The last part of the prove was to have one Subject hold a 15lb weight starting with the arm ample extended then slew and hold at a 90 degree tumble for two minutes.

Results: Measurements were recorded from alone five Subjects and the following is what was interpret: As the load on the muscle increased the more(prenominal) the motor unit recruitment increased. This was shown by the mV/s output increase of .418mV/s, .898mV/s, 1.121mV/s, using 3lbs, 12lbs, and 15lbs, respectively. The total EMG aim was gre ater during the concentric phase, suggesting! more muscle fibers are dynamical at this time. Lastly, fatigue on muscle was causing a relatively short lower in motor recruitment followed by a plait in motor recruitment. banter: The first part of the lab was to determine whether motor unit recruitment would increase with the increase of load (weight) on the muscle. The results showed that there was more motor unit recruitment each time weight increased for all Subjects. This is due to...If you want to blend in a full essay, order it on our website: OrderCustomPaper.com

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