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S02 EMG 2 Mechanical Work

EMG 2 examines motor unit recruitment and skeletal muscle fatigue. Students lift hand weights to demonstrate the use of skeletal muscle and record EMG while inducing muscle fatigue. Students see the level of motor unit recruitment associated with the amount of applied force.

Experimental Objectives

  1. To record EMG response to increased weights lifted by dominant and non-dominant arms.
  2. To compare differences between male and female students.
  3. To observe, record, and correlate motor unit recruitment with increased mechanical work by skeletal muscle.
  4. To record EMG and Integrated EMG when inducing fatigue.
  5. Optional: To listen to EMG sounds and correlate sound intensity with motor unit recruitment.

Tasks Performed by the Student

Videos

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Student Prep & Distance Learning

Click the link(s) below for sample data and/or lesson procedure video(s), BSL PRO Lesson procedures (PDF) for human lessons*, and graph template files (*.gtl) for BSL PRO Lessons. If more than one .gtl is available, download the .gtl with the _suffix to match BSL version and hardware.

Lesson Hardware

This lesson requires a Biopac Science Lab (MP40) System and the following hardware. If your BScL System does not include all hardware items, expand your system by selecting required items below.

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