Evidence suggesting that a transcortical reflex pathway contributes to cutaneous reflexes in the tibialis anterior muscle during walking in man

1999 ◽  
Vol 124 (1) ◽  
pp. 59-68 ◽  
Author(s):  
L. O. D. Christensen ◽  
H. Morita ◽  
N. Petersen ◽  
J. Nielsen
Keyword(s):  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Cutaneous Reflexes ◽  
Reflex Pathway ◽  
Transcortical Reflex

Phase-dependent modulation of cutaneous reflexes of tibialis anterior muscle during hopping

2001 ◽  
Vol 897 (1-2) ◽  
pp. 180-183 ◽  
Author(s):  
S. Hauglustaine ◽  
T. Prokop ◽  
K.J. van Zwieten ◽  
J. Duysens
Keyword(s):  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Cutaneous Reflexes

Load-related modulation of cutaneous reflexes in the tibialis anterior muscle during passive walking in humans

2008 ◽  
Vol 27 (6) ◽  
pp. 1566-1576 ◽  
Author(s):  
Tsuyoshi Nakajima ◽  
Kiyotaka Kamibayashi ◽  
Makoto Takahashi ◽  
Tomoyoshi Komiyama ◽  
Masami Akai ◽  
...  
Keyword(s):  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Cutaneous Reflexes ◽  
Passive Walking

Phase-dependent modulation of cutaneous reflexes in tibialis anterior muscle during passive stepping

2008 ◽  
Vol 30 (1) ◽  
pp. 46-51 ◽  
Author(s):  
Tsuyoshi Nakajima ◽  
Kiyotaka Kamibayashi ◽  
Makoto Takahashi ◽  
Tomoyoshi Komiyama ◽  
Kimitaka Nakazawa
Keyword(s):  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Cutaneous Reflexes

scholarly journals A High Protein Diet Does Not Improve Protein Synthesis in the Nonweight-Bearing Rat Tibialis Anterior Muscle

1996 ◽  
Vol 126 (1) ◽  
pp. 266-272 ◽  
Author(s):  
Daniel Taillandier ◽  
Charles-Yannick Guezennec ◽  
Philippe Patureau-Mirand ◽  
Xavier Bigard ◽  
Maurice Arnal ◽  
...  
Keyword(s):  
Protein Synthesis ◽  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
High Protein Diet ◽  
High Protein ◽  
Protein Diet

Structure of the cortical cytoskeleton in fibers of postural muscles and cardiomyocytes of mice after 30-day 2-g centrifugation

2015 ◽  
Vol 118 (5) ◽  
pp. 613-623 ◽  
Author(s):  
Irina V. Ogneva ◽  
V. Gnyubkin ◽  
N. Laroche ◽  
M. V. Maximova ◽  
I. M. Larina ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Tibialis Anterior ◽  
Mechanical Load ◽  
Tibialis Anterior Muscle ◽  
Muscle Fibers ◽  
Control Group ◽  
Negative Effects ◽  
Transverse Stiffness ◽  
G 12 ◽  
Cortical Cytoskeleton

Altered external mechanical loading during spaceflights causes negative effects on muscular and cardiovascular systems. The aim of the study was estimation of the cortical cytoskeleton statement of the skeletal muscle cells and cardiomyocytes. The state of the cortical cytoskeleton in C57BL6J mice soleus, tibialis anterior muscle fibers, and left ventricle cardiomyocytes was investigated after 30-day 2- g centrifugation (“2- g” group) and within 12 h after its completion (“2- g + 12-h” group). We used atomic force microscopy for estimating cell's transverse stiffness, Western blotting for measuring protein content, and RT-PCR for estimating their expression level. The transverse stiffness significantly decreased in cardiomyocytes (by 16%) and increased in skeletal muscles fibers (by 35% for soleus and by 29% for tibialis anterior muscle fibers) in animals of the 2-g group (compared with the control group). For cardiomyocytes, we found that, in the 2- g + 12-h group, α-actinin-1 content decreased in the membranous fraction (by 27%) and increased in cytoplasmic fraction (by 28%) of proteins (compared with the levels in the 2- g group). But for skeletal muscle fibers, similar changes were noted for α-actinin-4, but not for α-actinin-1. In conclusion, we showed that the different isoforms of α-actinins dissociate from cortical cytoskeleton under increased/decreased of mechanical load.

scholarly journals Losing touch: age-related changes in plantar skin sensitivity, lower limb cutaneous reflex strength, and postural stability in older adults

2016 ◽  
Vol 116 (4) ◽  
pp. 1848-1858 ◽  
Author(s):  
Ryan M. Peters ◽  
Monica D. McKeown ◽  
Mark G. Carpenter ◽  
J. Timothy Inglis
Keyword(s):  
Older Adults ◽  
Lower Limb ◽  
Postural Stability ◽  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Quiet Standing ◽  
Detection Thresholds ◽  
Cutaneous Reflex ◽  
Age Related ◽  
Age Related Changes

Age-related changes in the density, morphology, and physiology of plantar cutaneous receptors negatively impact the quality and quantity of balance-relevant information arising from the foot soles. Plantar perceptual sensitivity declines with age and may predict postural instability; however, alteration in lower limb cutaneous reflex strength may also explain greater instability in older adults and has yet to be investigated. We replicated the age-related decline in sensitivity by assessing monofilament and vibrotactile (30 and 250 Hz) detection thresholds near the first metatarsal head bilaterally in healthy young and older adults. We additionally applied continuous 30- and 250-Hz vibration to drive mechanically evoked reflex responses in the tibialis anterior muscle, measured via surface electromyography. To investigate potential relationships between plantar sensitivity, cutaneous reflex strength, and postural stability, we performed posturography in subjects during quiet standing without vision. Anteroposterior and mediolateral postural stability decreased with age, and increases in postural sway amplitude and frequency were significantly correlated with increases in plantar detection thresholds. With 30-Hz vibration, cutaneous reflexes were observed in 95% of young adults but in only 53% of older adults, and reflex gain, coherence, and cumulant density at 30 Hz were lower in older adults. Reflexes were not observed with 250-Hz vibration, suggesting this high-frequency cutaneous input is filtered out by motoneurons innervating tibialis anterior. Our findings have important implications for assessing the risk of balance impairment in older adults.

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