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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.
To record EMG response to increased weights lifted by dominant and non-dominant arms.
To compare differences between male and female students.
To observe, record, and correlate motor unit recruitment with increased mechanical work by skeletal muscle.
To record EMG and Integrated EMG when inducing fatigue.
Optional: To listen to EMG sounds and correlate sound intensity with motor unit recruitment.
Tasks Performed by the Student
Lift weight (bicep curl) and hold for 2 seconds.
Repeat cycles of weight lifting; add weight for each cycle until the Subject is lifting the maximum weight.
Lift the maximum weight to 45 degrees and hold it until the onset of fatigue.
Repeat the sequence for the non-dominant arm.
Optional: Listen to the sound of their EMG.
Classic, clinical grid markings available for quick and easy evaluations.
Raw and Integrated EMG signals can be overlapped for easy interpretation of the data.
The students compare their dominant and non-dominant arms.
The force values are scaled to kilograms.
A clear demonstration of mechanical work.
Biopac Student Lab Student Download
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.
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