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Σάββατο 14 Ιουλίου 2018
P 034 - the effect of treadmill geometry on muscle fatigue
Publication date: Available online 14 July 2018
Source: Gait & Posture
Author(s): A. Mastalerz, C. Urbanik, D. Iwańska, P. Tabor, M. Karczewska-Lindinger, O. Grabowska
Abstract
The purpose of this study was to determine the influence of curve radius of the indoor (200 m) and outdoor (400 m) treadmill on bioelectrical muscle activity. Four professional male athletes that have an international master class in men's 400 m took part in that research. EMG measurements were recorded during the run on tartan athletic track in the indoor (200 m) and outdoor (400 m) treadmill. The athlete had to run 400 m distances with maximal speed. The mean power frequency (MPF) was calculated. Muscle fatigue was evaluated by the slope of regression line. The rate of fatigue was different and was related to the side of the body (3–24%) and the type (5–43%) of the muscle. Results indicate that muscle fatigue was greater for the right leg and during running on indoor truck.
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P 053—The use of the ankle strategy to restore balance during perturbed walking
Publication date: Available online 14 July 2018
Source: Gait & Posture
Author(s): M. van den Bogaart, S.M. Bruijn, J.H. van Dieën, P. Meyns
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P 034 - the effect of treadmill geometry on muscle fatigue
Publication date: Available online 14 July 2018
Source: Gait & Posture
Author(s): A. Mastalerz, C. Urbanik, D. Iwańska, P. Tabor, M. Karczewska-Lindinger, O. Grabowska
Abstract
The purpose of this study was to determine the influence of curve radius of the indoor (200 m) and outdoor (400 m) treadmill on bioelectrical muscle activity. Four professional male athletes that have an international master class in men's 400 m took part in that research. EMG measurements were recorded during the run on tartan athletic track in the indoor (200 m) and outdoor (400 m) treadmill. The athlete had to run 400 m distances with maximal speed. The mean power frequency (MPF) was calculated. Muscle fatigue was evaluated by the slope of regression line. The rate of fatigue was different and was related to the side of the body (3–24%) and the type (5–43%) of the muscle. Results indicate that muscle fatigue was greater for the right leg and during running on indoor truck.
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P 053—The use of the ankle strategy to restore balance during perturbed walking
Publication date: Available online 14 July 2018
Source: Gait & Posture
Author(s): M. van den Bogaart, S.M. Bruijn, J.H. van Dieën, P. Meyns
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Single neuron activity and c-Fos expression in the rat striatum following electrical stimulation of the peripheral vestibular system.
| Related Articles |
Single neuron activity and c-Fos expression in the rat striatum following electrical stimulation of the peripheral vestibular system.
Physiol Rep. 2018 Jul;6(13):e13791
Authors: Stiles L, Reynolds JN, Napper R, Zheng Y, Smith PF
Abstract
Connections between the vestibular system and the basal ganglia have been postulated since the early 20th century. However, the results of electrophysiological studies investigating neuronal responses to electrical stimulation of the vestibular system have been inconsistent. The aim of this study was to investigate the effects of electrical stimulation of the vestibular labyrinth on single neuron activity and c-Fos expression in the rat striatum. We used electrical stimulation of the vestibular labyrinth (various intensities delivered to the round window) to examine the electrophysiological response of striatal neurons and c-Fos expression. From 507 single neurons recorded (n = 20 rats), no vestibular-responsive neuron was found at 1× and 2× the nystagmus threshold; however, 6 neurons were found at 3× the threshold. These neurons were found bilaterally, with a response latency of ~50 msec from the end of the stimulus. For the c-Fos study, the number of neurons expressing c-Fos was quantified using stereological methods. Stimulation at 2× the threshold for nystagmus (n = 5 rats) resulted in a significant decrease in the number of neurons expressing c-Fos in the bilateral striatum compared to both the sham control group (n = 5) and the lower stimulus intensity group (n = 5) (P ≤ 0.0001 for both). The results of this study demonstrate that: (1) some single striatal neurons respond to electrical vestibular stimulation, however, these responses are circumscribed and infrequent; (2) electrical stimulation of the vestibular labyrinth results in a decrease in the number of striatal neurons expressing c-Fos, in a current-dependent manner.
PMID: 30003674 [PubMed - in process]
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The Role of Migraine in Hearing and Balance Symptoms.
| Related Articles |
The Role of Migraine in Hearing and Balance Symptoms.
JAMA Otolaryngol Head Neck Surg. 2018 Jul 12;:
Authors: Lin HW, Djalilian HR
PMID: 30003218 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader https://ift.tt/2uBB2MW
via IFTTT
Single neuron activity and c-Fos expression in the rat striatum following electrical stimulation of the peripheral vestibular system.
| Related Articles |
Single neuron activity and c-Fos expression in the rat striatum following electrical stimulation of the peripheral vestibular system.
Physiol Rep. 2018 Jul;6(13):e13791
Authors: Stiles L, Reynolds JN, Napper R, Zheng Y, Smith PF
Abstract
Connections between the vestibular system and the basal ganglia have been postulated since the early 20th century. However, the results of electrophysiological studies investigating neuronal responses to electrical stimulation of the vestibular system have been inconsistent. The aim of this study was to investigate the effects of electrical stimulation of the vestibular labyrinth on single neuron activity and c-Fos expression in the rat striatum. We used electrical stimulation of the vestibular labyrinth (various intensities delivered to the round window) to examine the electrophysiological response of striatal neurons and c-Fos expression. From 507 single neurons recorded (n = 20 rats), no vestibular-responsive neuron was found at 1× and 2× the nystagmus threshold; however, 6 neurons were found at 3× the threshold. These neurons were found bilaterally, with a response latency of ~50 msec from the end of the stimulus. For the c-Fos study, the number of neurons expressing c-Fos was quantified using stereological methods. Stimulation at 2× the threshold for nystagmus (n = 5 rats) resulted in a significant decrease in the number of neurons expressing c-Fos in the bilateral striatum compared to both the sham control group (n = 5) and the lower stimulus intensity group (n = 5) (P ≤ 0.0001 for both). The results of this study demonstrate that: (1) some single striatal neurons respond to electrical vestibular stimulation, however, these responses are circumscribed and infrequent; (2) electrical stimulation of the vestibular labyrinth results in a decrease in the number of striatal neurons expressing c-Fos, in a current-dependent manner.
PMID: 30003674 [PubMed - in process]
from #Audiology via ola Kala on Inoreader https://ift.tt/2meTd7b
via IFTTT
The Role of Migraine in Hearing and Balance Symptoms.
| Related Articles |
The Role of Migraine in Hearing and Balance Symptoms.
JAMA Otolaryngol Head Neck Surg. 2018 Jul 12;:
Authors: Lin HW, Djalilian HR
PMID: 30003218 [PubMed - as supplied by publisher]
from #Audiology via ola Kala on Inoreader https://ift.tt/2uBB2MW
via IFTTT
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