PMID- 24123180
OWN - NLM
STAT- MEDLINE
DCOM- 20140804
LR  - 20140619
IS  - 1097-4598 (Electronic)
IS  - 0148-639X (Linking)
VI  - 50
IP  - 1
DP  - 2014 Jul
TI  - Anconeus motor unit number estimates using decomposition-based quantitative 
      electromyography.
PG  - 52-9
LID - 10.1002/mus.24092 [doi]
AB  - INTRODUCTION: Motor unit number estimates (MUNEs) provide important information 
      in health, aging, and disease, and can be determined using decomposition-enhanced 
      spike-triggered averaging (DE-STA). Discrimination of surface-detected motor unit 
      potentials (S-MUPs) has been limited to contractile forces of  reverse similar30% maximum 
      voluntary contraction (MVC), which is insufficient to recruit a representative 
      sample of the entire MU pool in most muscles. Unique features of the anconeus may 
      permit MUNEs at high muscle activation levels. METHODS: In 10 men (25 +/- 3 years), 
      anconeus MUNEs were performed using DE-STA at 10%, 30%, and 50% root-mean-square 
      of MVC (RMS(MVC)). RESULTS: The mean compound muscle action potential of the 
      anconeus was  reverse similar6 mV, and average S-MUP amplitudes were  reverse similar100 muV, 145 muV, and 235 muV 
      at 10%, 30%, and 50% RMS(MVC), resulting in low average MUNEs of 58, 38, and 25, 
      respectively. CONCLUSIONS: Elbow extensor force-EMG relationships suggest full 
      recruitment of the anconeus MU pool at 50% RMS(MVC), thus providing a 
      representative sample for MUNE.
CI  - Copyright (c) 2013 Wiley Periodicals, Inc.
FAU - Stevens, Daniel E S
AU  - Stevens DE
AD  - Canadian Centre for Activity and Aging, School of Kinesiology, Faculty of Health 
      Sciences, University of Western Ontario, London, Ontario, Canada.
FAU - Harwood, Brad
AU  - Harwood B
FAU - Power, Geoffrey A
AU  - Power GA
FAU - Doherty, Timothy J
AU  - Doherty TJ
FAU - Rice, Charles L
AU  - Rice CL
LA  - eng
PT  - Journal Article
DEP - 20140509
PL  - United States
TA  - Muscle Nerve
JT  - Muscle & nerve
JID - 7803146
SB  - IM
MH  - Action Potentials/physiology
MH  - Adult
MH  - Cell Count
MH  - Data Interpretation, Statistical
MH  - Elbow/physiology
MH  - Electric Stimulation
MH  - Electromyography/*methods
MH  - Humans
MH  - Least-Squares Analysis
MH  - Male
MH  - Motor Neurons/*physiology
MH  - Muscle Contraction/physiology
MH  - Muscle Fibers, Skeletal/*physiology
MH  - Muscle, Skeletal/cytology/innervation/*physiology
MH  - Neurology/*methods
MH  - Reference Values
MH  - Transducers
MH  - Young Adult
OTO - NOTNLM
OT  - MUNE, triceps brachii
OT  - elbow extensors, EMG
OT  - force-EMG relationship
EDAT- 2013/10/15 06:00
MHDA- 2014/08/05 06:00
CRDT- 2013/10/15 06:00
PHST- 2013/06/26 00:00 [received]
PHST- 2013/10/02 00:00 [revised]
PHST- 2013/10/04 00:00 [accepted]
PHST- 2013/10/15 06:00 [entrez]
PHST- 2013/10/15 06:00 [pubmed]
PHST- 2014/08/05 06:00 [medline]
AID - 10.1002/mus.24092 [doi]
PST - ppublish
SO  - Muscle Nerve. 2014 Jul;50(1):52-9. doi: 10.1002/mus.24092. Epub 2014 May 9.