Free Poster Presentations: Forearm heat pain does not inhibit electrically induced tibialis anterior muscle pain

2010 ◽  
Vol 1 (3) ◽  
pp. 169-169
Author(s):  
Maria Gullander ◽  
Dagfinn Matre
Keyword(s):  
Muscle Pain ◽  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Conditioning Stimulus ◽  
Electrical Stimulus ◽  
Gender Effects ◽  
Skin Area ◽  
Inhibitory System ◽  
Heat Stimulus ◽  
Vas Scores

Abstract Objectives Women report more musculoskeletal pain than men. A dysfunctional pain inhibitory system has been launched as a contributing factor for these gender differences. This study used a diffuse noxious inhibitory controls (DNIC) paradigm and asked the following questions: (1) is electrically induced muscle pain inhibited by a painful heat stimulus to the forearm, and (2) does women show signs of reduced inhibition compared to men?. Methods Forty healthy subjects (20 females; 18–45 years) participated in a cross-over design with painful (45–49 °C) or non-painful (35 °C) conditioning heat stimuli (in balanced order) to the contralateral forearm. The subjects received 10 painful electrical stimuli in the tibialis anterior muscle before, during and after conditioning and rated each electrical stimulus on a 0–10cm visual analogue scale (VAS). There was 30 min between experiments. All VAS scores were normalized to scores before conditioning (100%) and analyzed by RM-ANOVA. Females participated during the ovulatory phase (days 12–14). Results There was a main effect of conditioning. VAS scores during conditioning were reduced to 90 ± 24% (mean ± S.D.) with respect to before conditioning (p = 0.02). There was no difference between painful and non-painful conditioning (p = 0.31). Neither was there any difference between genders (p = 0.28); mean male VAS scores were 91 ± 21% and mean female scores were 89 ± 27% during (vs. before) conditioning. Conclusion Electrically induced muscle pain was not inhibited by a painful heat stimulus to the forearm. The reduction in muscle pain may be results of habituation. The lack of a DNIC effect may have been caused by the relatively small skin area receiving the conditioning stimulus, and excludes a conclusion on gender effects.

scholarly journals Activity of the Tibialis Anterior Muscle Associated with the Paw Withdrawal Reflex can be Considered as an Indicator for Estimating Chronic Muscle Pain

2009 ◽  
Vol 29 (2) ◽  
pp. 115-118
Author(s):  
Junichiro TAMAKI ◽  
Masayoshi TSURUOKA ◽  
Dan WANG ◽  
Masako MAEDA ◽  
Bunsho HAYASHI ◽  
...  
Keyword(s):  
Muscle Pain ◽  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Withdrawal Reflex ◽  
Chronic Muscle Pain

scholarly journals Aerobic Exercise Attenuates Pain Sensitivity: An Event-Related Potential Study

2021 ◽  
Vol 15 ◽  
Author(s):  
Kangyong Zheng ◽  
Changcheng Chen ◽  
Suyong Yang ◽  
Xueqiang Wang
Keyword(s):  
Aerobic Exercise ◽  
Tibialis Anterior ◽  
Pain Threshold ◽  
Tibialis Anterior Muscle ◽  
Event Related Potential ◽  
Moderate Intensity ◽  
Contact Heat ◽  
Low Intensity ◽  
Inhibitory Function ◽  
Heat Stimulus

In this study, electroencephalography (EEG) was utilized to explore the neurophysiological mechanisms of aerobic exercise-induced hypoalgesia (EIH) and provide a theoretical basis for the application of aerobic exercise in pain assessment and treatment. Forty-five healthy subjects were randomly divided into moderate-intensity aerobic exercise [70% heart rate reserve (HRR)], low-intensity aerobic exercise (50% HRR), or control groups (sitting). Aerobic exercise was performed with cycling. Pressure pain threshold (PPT), heat pain threshold (HPT), event-related potential (ERP) induced by contact heat stimulus and pain scoring were measured before and after the intervention. We found that moderate-intensity aerobic exercise can increase the PPT (rectus femoris: t = −2.71, p = 0.017; tibialis anterior muscle: t = −2.36, p = 0.033) and HPT (tibialis anterior muscle: t = −2.219, p = 0.044) of proximal intervention sites rather than distal sites, and decreased pain scorings of contact heat stimulus. After moderate-intensity aerobic exercise, alpha oscillation power reflecting the central descending inhibitory function was enhanced (t = −2.31, p < 0.05). Low-intensity aerobic exercise mainly reduced the pain unpleasantness rating (Block 1: t = 2.415, p = 0.030; Block 2: t = 3.287, p = 0.005; Block 4: t = 2.646, p = 0.019; Block 5: t = 2.567, p = 0.022). Aerobic exercise had an overall EIH effect. Its hypoalgesic effect was related to exercise intensity and affected by the site and type of pain stimulus. Moderate-intensity aerobic exercise effectively reduced the sensitivity to various painful stimuli, and low-intensity aerobic exercise selectively inhibited the negative emotional pain response. The hypoalgesic mechanism of aerobic exercise involves the enhancement of the central descending inhibitory function.

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.

scholarly journals An Interesting Case of Post Traumatic Tibialis Anterior Muscle Herniation

2015 ◽  
Vol 11 (4) ◽  
pp. 332-334
Author(s):  
AS Hegde
Keyword(s):  
Tibialis Anterior ◽  
Tibialis Anterior Muscle ◽  
Interesting Case ◽  
Leg Pain ◽  
Muscle Belly ◽  
Medical College ◽  
Muscle Hernia ◽  
Rare Differential Diagnosis ◽  
Fascia Lata Graft ◽  
Post Traumatic

A muscle hernia is defined as a protrusion of the muscle belly through an acquired or congenital fascial defect. Muscle herniation through fascia is a relatively rare entity. Though predominantly asymptomatic, rarely they can be cause of vague pain in the leg, aggravated by exercises. Various conservative measures have been described for asymptomatic hernias, but treatment of symptomatic cases remains controversial. Here we present a case of symptomatic post traumatic tibialis anterior muscle herniation which was treated successfully with autologous fascia lata graft in Yenepoya Medical College, Mangalore in the month of January 2013.Muscle hernias should be kept in mind as a rare differential diagnosis whenever patients present with persisting vague leg pain with or without swelling. If conservative treatment fails, we recommend closure with autologous graft or fasciotomy to relieve the symptoms.Kathmandu Univ Med J 2013; 11(4): 332-334

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