H36 Muscular Biofeedback
©2004 BIOPAC Systems, Inc.
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Lesson H36: Muscular Biofeedback
Lesson developed by:
Heather Medema-Johnson, M.S., ATC, CSCS
is a form of self-regulation in which an individual is provided information in the form of
sensory feedback about a biological condition or function in order to gain control over that biological
function. Biofeedback is often used as a therapeutic tool by which therapists, sports
medicine/rehabilitation professionals, neurophysiologists, and psychophysiologists can use
electrophysiological instrumentation to measure, process, and “feedback” the recorded information to the
subject (client, patient, athlete). The feedback is usually given through auditory and/or visual means.
Biofeedback is considered advantageous, as it provides the subject with a chance to use their visual and
auditory senses to become more aware of how they are performing during therapy or training, attempt to
improve upon it, and immediately see the improvement as it is occurring. Because the subject
immediately notes improvements, they are “rewarded.” This reward will hopefully lead to larger
improvements and accomplishments.
There are many types of biofeedback modalities available. One of the most popular and widely accepted
modalities used in a clinical setting is
biofeedback. EMG (electromyography)
bioinstrumentation measures muscle activity by recording electrochemical activity of a muscle occurring
during depolarization and recruitment of a skeletal muscle motor unit. This modality is used for
and control when orthopedic injuries or surgeries have taken place, or when the peripheral
nervous system has been impaired. It is also used to promote muscle relaxation to decrease muscle
guarding, pain, stress, and anxiety.
Read more about it…
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2000; Vol. 14, No. 3, Article 2.
Bickers MJ. Does verbal encouragement work? The effect of verbal encouragement on a muscular
7: 196-200, 1993.
J. M. Jakobi and E. Cafarelli:
Neuromuscular drive and force production are not altered during
J Appl Physiol
84: 200-206, 1998.