scholarly journals PSYCHOPHYSIOLOGICAL FEATURES IN ELITE HOCKEY PLAYERS AGED 15–16

2019 ◽  
Vol 19 (1) ◽  
pp. 36-41 ◽  
Author(s):  
E Surina-Marysheva ◽  
V Erlikh ◽  
S Kantyukov ◽  
K Naumova
Keyword(s):  
Nervous System ◽  
Muscle Contraction ◽  
Voluntary Movement ◽  
Sensorimotor Integration ◽  
Moving Object ◽  
Movement Coordination ◽  
Hockey Players ◽  
Static Form ◽  
Prospective Longitudinal ◽  
Speed And Accuracy

Aim. The article deals with studying the features of sensorimotor integration and movement coordination in elite hockey players aged 15–16. Materials and methods. A prospective longitudinal study was performed in the competitive phase of preparation. Hockey players aged 15–16 participated in the study (n = 36; attackers and defenders). The control group consisted of  16-year-old students from the college of physical education (n = 15). We performed an examination with the help of NS-PsychoTest software and hardware equipment (Russia, Neurosoft). We assessed the functional status of cortical centers of the nervous system, as well as the speed and accuracy of simple and complex eye-motor reactions. We determined the level of sensorimotor and voluntary movement coordination with the help of tremorometry. Results. Compared to peers, hockey players aged 15–16 possess a higher level of functional indicators under interference conditions (p < 0.05 in all cases) and a better indicator of the concentration of excitation (p < 0.001). Hockey players are characterized by a better speed and accuracy of reaction under interference conditions (p < 0.001 in all cases) and better reaction to a moving object (p < 0.05 in all cases). Compared to peers not-involved in sports, elite hockey players aged 15–16 are characterized by a higher level of voluntary movement coordination with a static form of muscle contraction (p < 0.01). Conclusion. The specific conditions of the competitive activity of hockey players aged 15–16 contribute to an increase in the efficiency of the central nervous system under interference conditions by improving the concentration of excitation. Sensorimotor integration of the players of this age is also distinguished by better predictive accuracy in reactions to a moving object. The parietal-premotor level of movement regulation in hockey players develops in accordance with age-related features, while specific physical loads influence the improvement of voluntary movement coordination with a static form of muscle contraction.

scholarly journals Effects of Combined HIIT and Stroop on Strength Manifestations, Serve Speed and Accuracy in Recreational Tennis Players

2021 ◽  
Vol 13 (14) ◽  
pp. 7717
Author(s):  
Juan Pedro Fuentes-García ◽  
Jesús Díaz-García ◽  
Miguel Ángel López-Gajardo ◽  
Vicente Javier Clemente-Suarez
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Cognitive Load ◽  
High Intensity ◽  
Interval Training ◽  
High Intensity Interval Training ◽  
Tennis Players ◽  
The Central Nervous System ◽  
High Intensity Interval ◽  
Speed And Accuracy

Background: The importance of the serve in tennis players’ performance is well known but no previous studies have analyzed the effects of both physical and cognitive fatigue on the speed and accuracy of the serve. This study analyzed the effect of a High-Intensity Interval Training (HIIT) with and without cognitive load on serve speed and accuracy, spirometry, and strength manifestation. Methods: 32 recreational players (25 men and 7 women; aged 21.40 ± 1.52 years) performed a HIIT and a HIIT with a Stroop in recovery phases before performing a series of tennis services. Speed and accuracy of the services, spirometry, and strength manifestations were registered. Results: The main findings of the study showed that strength manifestations and spirometry were not affected by either protocol. A decrease in serve speed was observed in both protocols (p < 0.001) but service accuracy did not show impairments (p = 0.66). Conclusion: A combination of physical and mental fatigue may decrease serve speed but will not affect strength manifestations or spirometry negatively. These results could be caused by a response of the central nervous system to maintain the accuracy of the ball in presence of fatigue.

scholarly journals Altered Perception of Distorted Visual Feedback Occurs Soon After Whiplash Injury: An Experimental Study of Central Nervous System Processing

2012 ◽  
Vol 5;15 (5;9) ◽  
pp. 405-413
Author(s):  
Jo Nijs
Keyword(s):  
Central Nervous System ◽  
Experimental Study ◽  
Nervous System ◽  
Medical Care ◽  
Visual Feedback ◽  
Whiplash Injury ◽  
Acute Stage ◽  
Red Cross ◽  
Healthy Controls ◽  
Prospective Longitudinal

Background: Sensory and motor system dysfunctions have been documented in a proportion of patients with acute whiplash associated disorders (WAD). Sensorimotor incongruence may occur and hence, may explain pain and other sensations in the acute stage after the trauma. Objectives: The present study aimed at 1) evaluating whether a visually mediated incongruence between sensory feedback and motor output increases symptoms and triggers additional sensations in patients with acute WAD, 2) investigating whether the pattern of sensations in response to sensorimotor incongruence differs among patients suffering from acute and chronic WAD, and healthy controls. Study Design: Experimental study. Setting: Patients with acute WAD were recruited within one month after whiplash injury via the emergency department of a local Red Cross medical care unit, the Antwerp University Hospital, and through primary care practices. Patients with chronic WAD were recruited through an advertisement on the World Wide Web and from the medical database of a local Red Cross medical care unit. Healthy controls were recruited from among the university college staff, family members, and acquaintances of the researchers. Methods: Thirty patients with acute WAD, 35 patients with chronic WAD, and 31 healthy persons were subjected to a coordination test. They performed congruent and incongruent arm movements while viewing a whiteboard or mirror. Results. Twenty-eight patients with acute WAD reported sensations such as pain, tightness, feeling of peculiarity, and tiredness at some stage of the test protocol. No significant differences in frequencies and intensities of sensations were found between the various test stages (P > .05). Significantly more sensations were reported during the incongruent mirror stage compared to the incongruent control stage (P < .05). The pattern in intensity of sensations across the congruent and incongruent stages was significantly different between the WAD groups and the control group. Limitations: The course and prognostic value of susceptibility to sensorimotor incongruence after an acute whiplash trauma are not yet clear from these results. A prospective longitudinal study with an expanded study population is needed to investigate if those with a lowered threshold to visually mediated sensorimotor incongruence in the acute stage are at risk to develop persistent pain and disability. Conclusion: Patients with acute WAD present an exacerbation of symptoms and additional sensations in response to visually mediated changes during action. These results indicate an altered perception of distorted visual feedback and suggest altered central sensorimotor nervous system processing in patients with acute WAD. Key words: Sensorimotor incongruence, visually mediated changes, whiplash, sensations, acute pain, chronic pain, altered central sensorimotor processing, central nervous system.

scholarly journals Design and Implementation ofReal-time Electrical Stimulation Artifact Suppression based on STM32

2021 ◽  
Vol 12 (5) ◽  
pp. 424-427
Author(s):  
Sangsoo Park, Hojun Yeom
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Electrical Stimulation ◽  
Embedded System ◽  
Muscle Contraction ◽  
Real Time ◽  
High Performance ◽  
Floating Point ◽  
Time Signal ◽  
Central Nervous System Damage

A biosignal is used as a control signal for electrical stimulation to restore weakened muscle function due to damage to the central nervous system. In patients with central nervous system damage, sufficient muscle contraction does not occur spontaneously. In this case, applying electrical stimulation can cause normal muscle contraction. However, it is necessary to remove the electrical stimulation artifact caused by the electrical stimulation. This paper describes a system design that removes electrical stimulation artifact in real time using a Cortex-M4-based STM32F processor. The STM32F is a very advantageous MCU for such DSPs, especially because it has a built-in floating point operator. Using STM32F's various high-performance peripherals (12-bit parallel ADC and 12-bit DAC, UART, Timer), an optimized embedded system was implemented.In this paper, the simulated and real-time results were compared and evaluated with the designed fir filter. In addition, the performance of the filter was evaluated through frequency analysis. As a result, it was verified that a high-performance 32-bit STM32F with floating point calculator and various peripherals is suitable for real-time signal processing

scholarly journals Integrating synapse, muscle contraction, and autonomic nervous system game: effect on learning and evaluation of students’ opinions

2020 ◽  
Vol 44 (2) ◽  
pp. 153-162 ◽  
Author(s):  
Lais Tono Cardozo ◽  
Amicio Pina Castro ◽  
Alexsandro Ferreira Guimarães ◽  
Lucila Ludmila Paula Gutierrez ◽  
Luís Henrique Montrezor ◽  
...  
Keyword(s):  
Nervous System ◽  
Autonomic Nervous System ◽  
Muscle Contraction ◽  
Undergraduate Students ◽  
System Analysis ◽  
Educational Game ◽  
Learning Assessment ◽  
Control Group ◽  
Autonomic Nervous ◽  
The Mean

This work describes the educational game “Integrating Synapse, Muscle Contraction, and Autonomic Nervous System,” which was developed to assist students in understanding and integrating concepts related to the physiology of synapses, muscle contraction, and the autonomic nervous system. Analysis was made of the effect of the game on learning and the students’ opinions about it. Dentistry students were divided into control and game groups. They attended lectures about the topics, after which the control group students were submitted to a test, whereas the game group performed the game activity before undertaking the test. The mean score was significantly higher for the game group, compared with the control group ( P < 0.05). Pharmacy students also attended lectures about these topics; in the next class, the students performed a pretest and the activity with the educational game. After the game, a posttest was applied. The mean scores were significantly higher for the posttest than for the pretest ( P < 0.05). Students of medicine attended the lectures and performed the activity with the educational game, without the learning assessment. All of the students answered a question, using a 5-point Likert-type scale, concerning whether they thought the activity with the game was useful for learning. The mean scores obtained by the dentistry, pharmacy, and medicine students were 4.7 ± 0.6, 4.9 ± 0.3, and 4.3 ± 0.1, respectively. The educational game increased the learning of the undergraduate students, in agreement with their opinions of the strategy.

Sensory feedback therapy as a modality of treatment in central nervous system disorders of voluntary movement

Neurology ◽  
1974 ◽  
Vol 24 (10) ◽  
pp. 925-925 ◽  
Author(s):  
J. BRUDNY ◽  
J. KOREIN ◽  
L. LEVIDOW ◽  
B. B. GRYNBAUM ◽  
A. LIEBERMAN ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Voluntary Movement ◽  
Sensory Feedback ◽  
Central Nervous System Disorders

scholarly journals Efficacy and morbidity of central nervous system "prophylaxis" in childhood acute lymphoblastic leukemia: eight years' experience with cranial irradiation and intrathecal methotrexate

Blood ◽  
1983 ◽  
Vol 61 (2) ◽  
pp. 297-303 ◽  
Author(s):  
A Inati ◽  
SE Sallan ◽  
JR Cassady ◽  
S Hitchcock-Bryan ◽  
LA Clavell ◽  
...  
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Learning Disabilities ◽  
Acute Lymphoblastic Leukemia ◽  
Lymphoblastic Leukemia ◽  
Cranial Irradiation ◽  
Intrathecal Methotrexate ◽  
Cns Prophylaxis ◽  
Late Morbidity ◽  
Prospective Longitudinal

Abstract Between 1972 and 1979, 214 children with acute lymphoblastic leukemia and no evidence of central nervous system (CNS) disease prior to CNS prophylaxis were treated with 2400 rad cranial irradiation and concurrent intrathecal methotrexate. Only nine children developed CNS leukemia; five of them in the CNS only and four concurrently in the CNS and another site. Major acute effects of CNS prophylaxis were seizures in seven patients (3%). Sixty-nine children who had a minimum follow-up of 4 yr were evaluable for late effects of therapy. Small cataracts, incomplete regrowth of hair, and learning disabilities were noted. The latter occurred in 18% of patients, an incidence similar to that encountered in a normal community of school-age children. However, the incidence of learning disabilities in patients who were under 5 yr of age at the time of diagnosis was much higher, 35%. We conclude that the combination of cranial irradiation and intrathecal methotrexate was highly efficacious. The incidence and severity of neuropsychologic abnormalities, the principal late morbidity of this treatment program, varies among reporting institutions. Prospective longitudinal studies of neuropsychologic function are necessary to better define the incidence of abnormalities. Future programs should attempt to decrease late morbidity, but must also assure equal efficacy and improve overall disease-free survival.

1624 Roles of nervous system and actual muscle contraction to glucose uptake in peripheral muscle in rat

1996 ◽  
Vol 25 ◽  
pp. S178
Author(s):  
Takao Nakamura ◽  
Ichiro Minejima ◽  
Masataka Kusunoki ◽  
Tsutomu Hara ◽  
Koichi Kawahara
Keyword(s):  
Nervous System ◽  
Muscle Contraction ◽  
Glucose Uptake ◽  
Peripheral Muscle

scholarly journals Advantages of comparative studies in songbirds to understand the neural basis of sensorimotor integration

2017 ◽  
Vol 118 (2) ◽  
pp. 800-816 ◽  
Author(s):  
Karagh Murphy ◽  
Logan S. James ◽  
Jon T. Sakata ◽  
Jonathan F. Prather
Keyword(s):  
Nervous System ◽  
Sensory Feedback ◽  
Sensorimotor Integration ◽  
New Technologies ◽  
Sensory Information ◽  
Neural Basis ◽  
Communication Behaviors ◽  
Song Repertoire ◽  
Evolutionary Variation ◽  
And Control

Sensorimotor integration is the process through which the nervous system creates a link between motor commands and associated sensory feedback. This process allows for the acquisition and refinement of many behaviors, including learned communication behaviors such as speech and birdsong. Consequently, it is important to understand fundamental mechanisms of sensorimotor integration, and comparative analyses of this process can provide vital insight. Songbirds offer a powerful comparative model system to study how the nervous system links motor and sensory information for learning and control. This is because the acquisition, maintenance, and control of birdsong critically depend on sensory feedback. Furthermore, there is an incredible diversity of song organizations across songbird species, ranging from songs with simple, stereotyped sequences to songs with complex sequencing of vocal gestures, as well as a wide diversity of song repertoire sizes. Despite this diversity, the neural circuitry for song learning, control, and maintenance remains highly similar across species. Here, we highlight the utility of songbirds for the analysis of sensorimotor integration and the insights about mechanisms of sensorimotor integration gained by comparing different songbird species. Key conclusions from this comparative analysis are that variation in song sequence complexity seems to covary with the strength of feedback signals in sensorimotor circuits and that sensorimotor circuits contain distinct representations of elements in the vocal repertoire, possibly enabling evolutionary variation in repertoire sizes. We conclude our review by highlighting important areas of research that could benefit from increased comparative focus, with particular emphasis on the integration of new technologies.

scholarly journals The influence of coordination on the attention stability of children with different nervous system typologie

2019 ◽  
Vol 10 (24) ◽  
pp. 367-386
Author(s):  
Georgiy Georgievich Polevoy
Keyword(s):  
Nervous System ◽  
First Graders ◽  
Comprehensive School ◽  
Movement Coordination ◽  
Run Test ◽  
Shuttle Run

The aim of the study is to define the influence of coordination abilities on attention stability development in first graders with different strengths of nervous system. Sixty 7- to 8-year-old schoolchildren from a usual comprehensive school participated in the research. Prior to the research, all children had been differentiated on equal 3 groups. The pedagogical experiment continued 7 months. During research there were changes in the groups. In the group KG, in the Shuttle run test, indicators have worsened from 10,3±0,6 s. to 10,4±0,6 s. (P>0,05), and in the methodic Bourdon Test indicators have worsened on 0,1 p. (P>0,05). In the group EG-2, in which schoolchildren were engaged taking into account the nervous system typology, there were considerable and positive changes. In the Shuttle run test indicators have improved from 10,3±0,6 s. to 9,7±0,5 s. (P<0,05), and in the methodic Bourdon Test indicators have improved on 1,4 p. (P<0,05). If the differentiated approach based on the typology is used, the indicators of movement coordination and attention stability will improve considerably during training. 

scholarly journals The state of psychophysiological functions in handball players with different experience of sports training

2020 ◽  
Vol 81 (2) ◽  
pp. 42-45
Author(s):  
S. Fedorchuk ◽  
Ye. Petrushevskyi
Keyword(s):  
Nervous System ◽  
Age Groups ◽  
The State ◽  
Functional Mobility ◽  
Older Age ◽  
Moving Object ◽  
Age Group ◽  
Sports Training ◽  
Psychophysiological Functions ◽  
The Individual

The aim of the study was to compare the state of psychophysiological functions of highly qualified handball players with different experience of sports training (special training). To determine the state of psychophysiological functions of athletes diagnostic complex "Diagnostics-1" was used (MV Makarenko, VS Lyzogub). In accordance with the purpose of the work, we studied the properties of the nervous system (functional mobility and strength of nervous processes), the efficiency of sensorimotor activity and the dynamics of nervous processes in feedback, the latency of complex response reactions of choice, the accuracy of response to a moving object. Higher psychophysiological status in terms of the strength of nervous processes (both in the feedback mode and during long-term sensorimotor loads in the mode of imposed rhythm) was demonstrated by athletes of the older age group with more experience of sports training. Athletes of older and younger age groups did not differ in the level of functional mobility of nervous processes and accuracy of reaction to a moving object. Therefore, we can assume that athletes with less experience of sports training in the state of these psychophysiological functions have reached the level of athletes of the older age group, ie the level of maximum realization of individual capabilities. The identified differences in the individual-typological properties of the higher parts of the central nervous system in female handball players with different sports experience can have prognostic value and be used to optimize sports improvement in this sport.

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