The Effect of Acute Taurine Ingestion on Human Maximal Voluntary Muscle Contraction

2018 ◽  
Vol 50 (2) ◽  
pp. 344-352 ◽  
Author(s):  
ZI XIANG LIM ◽  
ANISH SINGH ◽  
ZAC ZI XIANG LEOW ◽  
PETER G. ARTHUR ◽  
PAUL A. FOURNIER
Keyword(s):  
Muscle Contraction ◽  
Voluntary Muscle ◽  
Voluntary Muscle Contraction

Motor unit activities during maintained voluntary muscle contraction at constant levels in man

1981 ◽  
Vol 25 (2) ◽  
pp. 149-154 ◽  
Author(s):  
M. Kato ◽  
S. Murakami ◽  
K. Takahashi ◽  
H. Hirayama
Keyword(s):  
Muscle Contraction ◽  
Motor Unit ◽  
Voluntary Muscle ◽  
Voluntary Muscle Contraction

Effects of postural and voluntary muscle contraction on modulation of the soleus H reflex by transcranial magnetic stimulation

2015 ◽  
Vol 233 (12) ◽  
pp. 3425-3431 ◽  
Author(s):  
Jessica Guzmán-López ◽  
Aikaterini Selvi ◽  
Núria Solà-Valls ◽  
Jordi Casanova-Molla ◽  
Josep Valls-Solé
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Muscle Contraction ◽  
Magnetic Stimulation ◽  
H Reflex ◽  
Voluntary Muscle ◽  
Voluntary Muscle Contraction

Development of Neurorehabilitation Techniques Using Transcranial Magnetic Stimulation with Voluntary Muscle Contraction

2011 ◽  
pp. 280-286
Author(s):  
Tetsuo Touge ◽  
Shin Morita ◽  
Eiji Yamada ◽  
Takashi Kusaka
Keyword(s):  
Transcranial Magnetic Stimulation ◽  
Motor Cortex ◽  
Motor Neuron ◽  
Muscle Contraction ◽  
Magnetic Stimulation ◽  
Foramen Magnum ◽  
Voluntary Muscle ◽  
Neuron Excitability ◽  
Hand Dynamometer ◽  
Voluntary Muscle Contraction

The objective of this study was to elucidate the mechanism of transcranial magnetic stimulation (TMS) with maximum voluntary muscle contraction (MVC) (used to facilitate motor neuron function), the effects of magnetic stimulation at the foramen magnum level with MVC were tested by recording motor evoked potentials (MEPs) and the maximum muscle force. In addition, changes in regional cerebral blood flow (rCBF) due to TMS to the motor cortex during MVC were assessed using near infrared spectroscopy (NIRS). Three MEPs in the first dorsal interosseus (FDI) muscle elicited by TMS to the motor cortex or foramen magnum stimulation were recorded before and then at 15 minutes intervals for 1 hour after 4 MVCs (while subjects maximally pinched a strain-gauge transducer for 2 seconds). Five healthy volunteers received TMS to the left motor cortex while maximally grasping a hand dynamometer for 2 seconds 3 times at 10-second intervals and then repeated TMS with MVC 4 times within 1 hour. Oxy-hemoglobin (Hb) and deoxy-Hb levels were recorded at 24 scalp sites using NIRS while subjects grasped a hand dynamometer with MVC for 5 seconds before and after TMS with MVC. Foramen magnum stimulation with MVC significantly decreased MEP amplitudes after TMS with MVC for 1 hour. Oxy-Hb concentration of the left M1, subtracting the right M1, tended to increase after TMS with MVC. The present results suggest that TMS during MVC induces increased cortical motor neuron excitability. However, further studies are needed to elucidate the mechanism of how TMS with MVC might modulate cortical neuron excitability.

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