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Comparison of techniques to determine human skeletal muscle voluntary activation.
- Source :
-
Journal of Electromyography & Kinesiology . Oct2017, Vol. 36, p8-15. 8p. - Publication Year :
- 2017
-
Abstract
- Determining volitional activation (VA) can provide insights on the cause of muscle weakness in orthopedic and neurological populations. Two electrical stimulation techniques are traditionally used to quantify VA: interpolation (IT) and superimposition (CAR). IT allows for a more accurate VA estimation, however it requires individuals to be stimulated twice, compared to once for CAR, and thus increases stimulation associated discomfort. To date, there is no agreement on what is the best practical technique for calculating quadriceps VA. This paper aims to address this problem by determining what reference force (i.e., using either peak force or force at the time of stimulation) and type of stimulation (train of pulses (burst), doublet, and twitch) is the best technique to use. Our findings showed that the IT with the force at the time of stimulation as a reference should be used to determine VA and that when a burst was used, the VA ratio computations were more accurate. Additionally, using a twitch with a 2ms pulse duration produced reliable VA calculations and may be an acceptable alternative for pain-sensitive subjects. Accurate assessment of VA deficits can help clinicians design rehabilitation programs that are based on subject-specific strength impairments and are more effective. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SKELETAL muscle
*MUSCLE contraction
*MUSCLE weakness
*ELECTRIC stimulation
*QUADRICEPS muscle
*QUADRICEPS muscle physiology
*SKELETAL muscle physiology
*COMPARATIVE studies
*EXERCISE tests
*RESEARCH methodology
*MEDICAL cooperation
*RESEARCH
*RESEARCH funding
*STATISTICAL sampling
*WILL
*EVALUATION research
Subjects
Details
- Language :
- English
- ISSN :
- 10506411
- Volume :
- 36
- Database :
- Academic Search Index
- Journal :
- Journal of Electromyography & Kinesiology
- Publication Type :
- Academic Journal
- Accession number :
- 124796199
- Full Text :
- https://doi.org/10.1016/j.jelekin.2017.05.011