Motor point location index using regression equations for the tibialis anterior muscle

2012 ◽  
Vol 30 (4) ◽  
pp. 307-313 ◽  
Author(s):  
Dong Ryul Lee ◽  
Joshua H. You ◽  
Chung-Hwi Yi ◽  
Hye-Seon Jeon
Keyword(s):  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Regression Equations ◽  
Motor Point ◽  
Point Location

scholarly journals Anatomical Consideration of the Motor Point Location of the Tibialis Anterior Muscle for effective Neuromuscular Electrical Stimulation

2011 ◽  
Vol 23 (3) ◽  
pp. 381-384 ◽  
Author(s):  
Hirokazu Narita ◽  
Shoji Chiba ◽  
Hideki Yoshida ◽  
Hideaki Mizohata ◽  
Yoshikazu Tonosaki ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Neuromuscular Electrical Stimulation ◽  
Motor Point ◽  
Point Location

scholarly journals Sonographic comparison of transcutaneous stimulation versus percutaneus stimulation of the tibialis anterior: a pilot study

2019 ◽  
Vol 02 (02) ◽  
pp. 093-093
Author(s):  
Sánchez Lorenzo M. ◽  
Seoane Pardo R. ◽  
Mira Llopis M. ◽  
Iannone Lado S.
Keyword(s):  
Repeated Measures ◽  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Pennation Angle ◽  
P Value ◽  
Percutaneous Technique ◽  
Neutral Position ◽  
Motor Point ◽  
Healthy Individuals ◽  
Transcutaneous Stimulation

Abstract Background and Aims Previous studies have evaluated electrostimulation of the tibialis anterior muscle via ultrasound. However, to the best of our knowledge, to date, no study has compared percutaneous stimulation compared to transcutaneous stimulation. The aim of this study was to analyze and compare the influence of percutaneous stimulation versus transcutaneous stimulation on the angle and muscle width of the proximal motor point of the tibialis anterior among healthy individuals using ultrasound. Material and Methods A longitudinal prospective study. The study variables were muscle thickness and pennation angle, measured using ultrasound. A sample of 4 healthy individuals with a mean age of 35.25 years ( ± 2.17), mean height of 1.70m ( ±  0.03) and weight of 67.35kg ( ±  6.32), participated in this study. Stimulation was performed on the tibialis anterior of the dominant leg of each individual (n = 4). The subjects were seated in a vertical position. For position 1, the knee of the dominant leg remained completely extended and the ankle was fixed in a neutral position with an orthosis comprised of Velcro straps which immobilized the ankle and forefoot joints. For position 2, the knee remained flexed 90 degrees with the foot fixed in the orthosis and supported on the floor. The proximal motor point of the tibialis anterior muscle was located. A biphasic symmetric pulse current was used with the maximum tolerated intensity. Transcutaneous stimulation was performed via a small circular electrode, and for percutaneous stimulation a filiform acupuncture needle was used. To capture the ultrasound images, the probe was placed on a system with an articulated mechanical arm and a clamp that enabled the possibility of adjusting the height and/or angle and the position marked on the skin. Normality was contrasted using the Shapiro-Wilk test and sphericity was tested using the Mauchly's test. Analysis of variance was performed (ANOVA) for repeated measures. Results The comparison of both techniques in position 1 did not show significant differences between the transcutaneous technique versus the percutaneous technique neither for the angle (F = 2.07; p-valor = 0.18), nor for the width (F =0.28; p-value = 0.60). In the case of position 2, significant differences were not found between the transcutaneous technique versus the percutaneous technique, neither for the angle (F = 0.28; p-value = 0.606) nor for the weight (F =0.11; p-value = 0.75). Conclusions The comparison of transcutaneous stimulation versus percutaneous stimulation in the proximal motor point of the tibialis anterior does not seem to show statistically significant differences for muscle width nor pennation angle.

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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