TY  - JOUR
A1  - Schaefer, Laura
A1  - Bittmann, Frank
T1  - Coherent behavior of neuromuscular oscillations between isometrically interacting subjects
BT  - experimental study utilizing wavelet coherence analysis of mechanomyographic and mechanotendographic signals
JF  - Scientific Reports
N2  - Previous research has shown that electrical muscle activity is able to synchronize between muscles of one subject. The ability to synchronize the mechanical muscle oscillations measured by Mechanomyography (MMG) is not described sufficiently. Likewise, the behavior of myofascial oscillations was not considered yet during muscular interaction of two human subjects. The purpose of this study is to investigate the myofascial oscillations intra- and interpersonally. For this the mechanical muscle oscillations of the triceps and the abdominal external oblique muscles were measured by MMG and the triceps tendon was measured by mechanotendography (MTG) during isometric interaction of two subjects (n = 20) performed at 80% of the MVC using their arm extensors. The coherence of MMG/MTG-signals was analyzed with coherence wavelet transform and was compared with randomly matched signal pairs. Each signal pairing shows significant coherent behavior. Averagely, the coherent phases of n = 485 real pairings last over 82 ± 39 % of the total duration time of the isometric interaction. Coherent phases of randomly matched signal pairs take 21 ± 12 % of the total duration time (n = 39). The difference between real vs. randomly matched pairs is significant (U = 113.0, p = 0.000, r = 0.73). The results show that the neuromuscular system seems to be able to synchronize to another neuromuscular system during muscular interaction and generate a coherent behavior of the mechanical muscular oscillations. Potential explanatory approaches are discussed.
KW  - motor unit synchronization
KW  - muscle
KW  - task
KW  - contractions
KW  - humans
KW  - magnetoencephalography
KW  - systems
KW  - power
KW  - hand
KW  - time
Y1  - 2018
U6  - https://doi.org/10.1038/s41598-018-33579-5
SN  - 2045-2322
VL  - 8
SP  - 1
EP  - 10
PB  - Macmillan Publishers Limited
CY  - London
ER  - 
TY  - JOUR
A1  - Lu, Yong-Ping
A1  - Zeng, De-Ying
A1  - Chen, You-Peng
A1  - Liang, Xu-Jing
A1  - Xu, Jie-Ping
A1  - Huang, Si-Min
A1  - Lai, Zhi-Wei
A1  - Wen, Wang-Rong
A1  - von Websky, Karoline
A1  - Hocher, Berthold
T1  - Low birth weight is associated with lower respiratory tract infections in children with hand, foot, and mouth disease
JF  - Clinical laboratory : the peer reviewed journal for clinical laboratories and laboratories related to blood transfusion
N2  - Background: Low birth weight (LBW) might be a risk factor for acquiring lower respiratory tract infections (LRTIs) associated with disease related complications in early childhood. HFMD, a frequent viral infection in southern China, is a leading cause of lower respiratory tract infections in children. We analyzed whether LBW is a risk factor for children with HFMD to develop lower respiratory tract infections.
 Methods: A total of 298 children with HFMD, admitted to a hospital in Qingyuan city, Guangdong province, were recruited. Demographic data and clinical parameters such as serum glucose level and inflammatory markers including peripheral white blood cell count, serum C-reactive protein, and erythrocyte sedimentation rate were routinely collected on admission. Birth weight data were derived from birth records.
 Results: Mean birth weight (BW) was 167 g lower in patients with HFMD and LRTIs as compared to patients with solely HFMD (p = 0.022) and the frequency of birth weight below the tenth percentile was significantly higher in patients with HFMD and LRTIs (p = 0.002).
 Conclusions: The results of the study show that low birth weight is associated with a higher incidence of lower respiratory tract infections in young children with HFMD.
KW  - hand
KW  - foot and mouth disease (HFMD)
KW  - low birth weight (LBW)
KW  - lower respiratory tract infections (LRTIs)
KW  - pneumonia
KW  - children
Y1  - 2013
U6  - https://doi.org/10.7754/Clin.Lab.2012.120725
SN  - 1433-6510
VL  - 59
IS  - 9-10
SP  - 985
EP  - 992
PB  - Clin Lab Publ., Verl. Klinisches Labor
CY  - Heidelberg
ER  -