Muscle force production with low and medium frequency burst modulated biphasic pulsed currents

Abstract Objective: Russian current, a medium frequency burst modulated alternating current (BMAC), is widely used for NMES, but has not been shown to elicit forces near voluntary maximum. In contrast, low frequency BMAC has been shown to produce greater force production than Russian and most recent...

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Bibliographic Details
Published in:Physiotherapy theory and practice 2014-02, Vol.30 (2), p.105-109
Main Authors: Bellew, James W., Sanders, Kyle, Schuman, Kristen, Barton, Matt
Format: Article
Language:English
Subjects:
Adult
Cross-Over Studies
Electric Stimulation Therapy - adverse effects
Electric Stimulation Therapy - methods
Female
Humans
Indiana
Isometric Contraction
Lower Extremity
Male
Muscle
Muscle Strength
Muscle, Skeletal - innervation
NMES
Russian
strengthening
Treatment Outcome
Young Adult
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Summary:Abstract Objective: Russian current, a medium frequency burst modulated alternating current (BMAC), is widely used for NMES, but has not been shown to elicit forces near voluntary maximum. In contrast, low frequency BMAC has been shown to produce greater force production than Russian and most recently, medium frequency burst modulated biphasic pulsed current (BMBPC) elicited greater force than Russian. Whether low frequency BMBPC yields greater force than medium frequency BMBPC is unknown. This study examined elicited forces using BMBPC with low and medium frequency carrier currents. Design: A cross-over design where percent maximal isometric knee extensor forces (%MVIF) elicited using BMBPC with low or medium kilohertz carrier frequencies were compared in 23 subjects. Perceived discomfort was also assessed. Data were compared using paired samples t-tests. Results: 98.4% of the MVIF was elicited with the low frequency BMBPC which was significantly greater (p 
ISSN:0959-3985
1532-5040
DOI:10.3109/09593985.2013.823582