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EMG PARAMETERS AND KINESTHETIC DIFFERENTIATION DURING THE FREE-THROW OF BASKETBALL PLAYERS WITH VARIOUS LEVELS OF ATHLETIC EXPERIENCE

100%

Pakosz P.

Central European Journal of Sport Sciences and Medicine

2013

vol. 2

issue 2

31-38

Rationale and objective of the study: In the study of coordination of motor abilities, motor performance tests without examining the internal structure of the movement were used. The objective of this study was to examine the kinesthetic differentiation capacity level and to stimulate muscles during a test among basketball players in intermediate and specialist stages of training. Material and methods: Among ten basketball players from two equal groups at different level of advancement in sport, who play at diffe rent positions on the field, kinesthetic differentiation capacity was assessed by the „Basketball shooting with different balls” test. In order to assess the muscle involvement during the test, they were connected to the EMG amplifier. Results: More advanced basketball players obtained better results in the test, by an average of 7.4 point out of 60. Tested muscle bioelectric tension was lower by 21.8% in advanced players and the difference in the non-dominant hand was as high as 34.6%. Conclusions: The research indicates that advanced players obtain better level of kinesthetic differentiation and their average muscle bioelectric tension during throws is lower compared to beginner players. The difference in bio-electrical muscle tension in the time of throwing different balls was smaller in basketball players who are more advanced in training, and in both groups in the dominant hand. Mean values of EMG signal in a selected time interval show greater variability among the more advanced players.

The efficacy of electrotherapeutic procedures in cases of nerve conduction abnormalities demonstrated in motor fibres of the facial nerve by neurophysiological studies

58%

Zagłoba A., Huber J., Witkowska A., Lisiński P., Warzecha D.

Medical Rehabilitation

2008

vol. 12(4)

10-22

Wstęp: Celem pracy jest przedstawienie wyników kompleksowych badan z zakresu elektromiografii globalnej (EMG) oraz elektroneurografii (ENG, badanie fali M) włókien ruchowych nerwu twarzowego u 25 chorych z objawami obwodowego pora8enia nerwu twarzowego oraz algorytmu usprawniania tych chorych za pomocą zabiegów fizykoterapeutycznych (elektroterapia włókien ruchopalwych nerwu twarzowego) wspomaganych równie8 ukierunkowana kinezyterapia. W tych przypadkach wczesna i obiektywna diagnostyka, jak i natychmiastowe wdrożenie leczenia, pozwalają na uzyskanie szybszej poprawy funkcji ruchowej mięśni twarzy. Metoda: Testy diagnostyki neurofizjologicznej objęły obustronne badania elektromiografii globalnej wybranych mięśni twarzy (EMG; m. czołowy, m. dźwigacz skrzydła nosa, m. okre8ny ust) oraz badania elektroneurograficzne przewodnictwa eferentnego nerwu twarzowego (ENG, fala M). Na podstawie diagnozy lekarza prowadzącego, badanych chorych (n=25) podzielono ze względu na przyczynę porażenia: stan zapalny (n=8), rekonstrukcja chirurgiczna (n=7), idiopatyczne pora8enie typu Bella (n=10). Analogicznymi badaniami objęto grupę 25 zdrowych ochotników. Na ich podstawie stworzono wzorzec prawidłowych parametrów badan EMG i ENG nerwu twarzowego dla osób, u których nie stwierdza się żadnych zaburzeń ze strony układów nerwowego i mięśniowego. W wyniku prowadzonych powtarzalnych testów neurofizjologii klinicznej, ustalone zostały odpowiednie, indywidualne dla ka8dego chorego parametry elektrostymulacji, monitorowane po 10 i po 20 zabiegach fizjoterapeutycznych. Wyniki i wnioski: Badania neurofizjologiczne po dwóch etapach leczenia wykazały poprawę sprawności jednostek ruchowych badanych mięśni twarzy oraz przewodnictwa włókien ruchowych nerwu twarzowego. Otrzymane porównawczo wyniki badan EMG i ENG poprzez analizę parametrów częstotliwości rekrutacji jednostek ruchowych oraz nate8enia prądu stosowanego do wywołania fali M pozwoliły na określenie optymalnych parametrów elektrostymulacyjnych nerwu twarzowego. Kompleksowe badania neurofizjologiczne pozwalają na oszacowanie postępów leczenia zachowawczego oraz ukierunkowanie zabiegów fizykoterapii prowadzącej do wyraźnej poprawy czynności rehabilitowanych mięśni twarzy.

Aim: The aim of the study was to show the results of complex electromyography (global EMG) and electroneurographic (ENG, M wave) studies of motor fibres of the facial nerves in 25 patients with symptoms of peripheral facial nerve palsy as well as to evaluate a therapeutic algorithm involving therapy with physical agents (electrotherapy of motor fibres in the facial nerve) supplemented with focused kinesitherapy. In such cases, early and objective diagnosis and immediate introduction of treatment allow one to obtain better results in the motor function of the face muscles.Method: Neurophysiological tests included bilateral recordings of global electromyography from selected facial muscles (EMG; the frontal muscle, the levator alae nasi muscle, the orbicularis oris muscle) and electroneurographic motor conduction studies (ENG, M wave). Based on the diagnosis established in the treated patients (n=25) by the attending physician, the patients were divided into three groups, depending on the cause of palsy: inflammation (n=8), surgical reconstruction (n=7), idiopathic Bell’s palsy (n=10). Twenty-five healthy volunteers were studied using similar methods for comparison. Results from these studies in persons without any disturbances of the muscle-skeletal system served as a pattern of normal parameters in EMG and ENG studies. Repeated clinical neurophysiologic tests were fundamental for ascertaining the parameters of electrostimulation patterns determined individually for each patient and they were monitored after 10 and 20 physiotherapeutic procedures.Results and conclusions: Neurophysiological examinations following two phases of treatment showed an improvement in the motor units activity of the facial muscles and in motor nerve transmission. The obtained results from EMG and ENG examinations, in particular the analysis of frequency parameters in recruitment of the muscle motor units and applied current intensity to evoke the M wave allowed us to determine optimal parameters for facial nerve stimulation. Complex neurophysiological studies enable an estimation of the progress of conservative treatment and allow one to direct therapy with physical agents towards better improvement in the activity o rehabilitated facial muscles.

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1 Central European Journal of Sport Sciences and Medicine

1 Medical Rehabilitation

1 2013

1 2008

1 Huber J.

1 Lisiński P.

1 Pakosz P.

1 Warzecha D.

1 Witkowska A.

1 Zagłoba A.

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EMG PARAMETERS AND KINESTHETIC DIFFERENTIATION DURING THE FREE-THROW OF BASKETBALL PLAYERS WITH VARIOUS LEVELS OF ATHLETIC EXPERIENCE

The efficacy of electrotherapeutic procedures in cases of nerve conduction abnormalities demonstrated in motor fibres of the facial nerve by neurophysiological studies