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Literature DB >> 7588691

Phonomyogram from single motor units during voluntary isometric contraction.

Abstract

The purpose of this study was to determine the characteristics of the specific phonomyogram (PMG) of active motor units activated during voluntary isometric contractions. The electromyogram (EMG) and PMG were recorded from 87 anconeus motor units in 14 subjects. The elementary PMG from single motor units was analysed with a spike-triggered averaging technique. The electro-acoustical delay was 3.5 (SD 1.1) ms, which is within the range of values reported in the literature for PMG evoked by motor nerve stimulation. All motor units demonstrated a pattern of impulsive sounds with a duration of 87.2 (SD 10.7) ms. These results would imply that PMG is linked to the contractile activity of the motor units. These results also would suggest that PMG recorded from a contracting muscle in situ reflects the summation of elementary PMG during voluntary contraction more than the overall mechanical properties of the muscle.

Mesh：

Year: 1995 PMID： 7588691 DOI： 10.1007/BF00854981

Source DB: PubMed Journal: Eur J Appl Physiol Occup Physiol ISSN： 0301-5548

32 in total

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11 in total

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Authors: D Rafolt; E Gallasch
Journal: Med Biol Eng Comput Date: 2002-09 Impact factor: 2.602

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Authors: C Cescon; M Gazzoni; M Gobbo; C Orizio; D Farina
Journal: Med Biol Eng Comput Date: 2004-07 Impact factor: 2.602

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Authors: Pernille Vedsted; Anne Katrine Blangsted; Karen Søgaard; Claudio Orizio; Gisela Sjøgaard
Journal: Eur J Appl Physiol Date: 2004-10-05 Impact factor: 3.078

4. System identification of the mechanomyogram from single motor units during voluntary isometric contraction.

Authors: Takanori Uchiyama; Erika Hashimoto
Journal: Med Biol Eng Comput Date: 2011-03-11 Impact factor: 2.602

5. Comparison of displacement and acceleration transducers for the characterization of mechanics of muscle and subcutaneous tissues by system identification of a mechanomyogram.

Authors: Takanori Uchiyama; Keita Shinohara
Journal: Med Biol Eng Comput Date: 2012-11-03 Impact factor: 2.602

6. A new layered sensor for simultaneous measurement of EMG, MMG and oxygen consumption at the same position.

Authors: Akira Kimoto; Yuji Yamada
Journal: Med Biol Eng Comput Date: 2014-10-10 Impact factor: 2.602

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Authors: Fabio Esposito; Eloisa Limonta; Emiliano Cè
Journal: Eur J Appl Physiol Date: 2010-10-01 Impact factor: 3.078

8. The surface mechanomyogram as a tool to describe the influence of fatigue on biceps brachii motor unit activation strategy. Historical basis and novel evidence.

Authors: Claudio Orizio; Massimiliano Gobbo; Bertrand Diemont; Fabio Esposito; Arsenio Veicsteinas
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Journal: Med Biol Eng Comput Date: 2001-03 Impact factor: 3.079

10. The effect of accelerometer location on the classification of single-site forearm mechanomyograms.

Authors: Natasha Alves; Ervin Sejdić; Bhupinder Sahota; Tom Chau
Journal: Biomed Eng Online Date: 2010-06-10 Impact factor: 2.819