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Electric Muscle Activity During Manual Muscle Testing of the Shoulder

100%
Mikołajczyk K., Wiszomirska I.
Advances in Rehabilitation
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2013
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vol. 27
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issue 1
25-32
EN
Introduction: This is a research study, supported by a literature review, which gave the principles of anatomy, biomechanics, physiological and patological conditions of shoulder functioning. Correct muscle activity is essential for proper functioning of the shoulder. Electromyography is a method which enables to record and analize the signs of muscle activity. This tool is useful for veryfing the manual muscle tests, typically used for clinical examination of the shoulder. The aim of this study was to investigate electric activation of 8 shoulder muscles while manual testing the resistive external rotation in scapulohumeral joint. Material and methods: Fourteen healthy subjects (n=14) were manually tested for isometric resistance. Three tests were used, each with different level of abduction, respectively: the m. infraspinatus test (1): 0 degrees, non-specific biceps brachii tendon test (2): 45 degrees, resistive test for external rotation in the position of maximal internal rotation (3): 90 degrees. The superficial electromyography device used in the study was Noraxon: TeleMyo System 2400T, with MyoResearch XP software. It collected data about the muscle electric activity during all the tests. Statistic data mining was made using Statistica programme. Peak amplitude values were collected and comparison of three tests was made. Results: High supraspinatus activation could be observed together with high coactivation of other shoulder muscles. Also, inter-individual dispersion of muscle activation values was high. Conclusions: Surface electromyography alone appeared to be insufficient method for assesing manual muscle tests, although it may give suggestions for testing and therapeutic exercises. Results of electromyography need to be confirmed by conducting large group studies, and large scatter of muscle activation values has to be taken account.
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The effect of robot therapy assisted by surface EMG on hand recovery in post-stroke patients. A pilot study

100%
Dziemian K., Kiper A., Baba A., Baldan F., Alhelou M., Agostini M., Turolla A., Kiper P.
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PL
Background: Hemiparesis caused by a stroke negatively limits a patient’s motor function. Nowadays, innovative technologies such as robots are commonly used in upper limb rehabilitation. The main goal of robot-aided therapy is to provide a maximum number of stimuli in order to stimulate brain neuroplasticity. Treatment applied in this study via the AMADEO robot aimed to improve finger flexion and extension. Aim: To assess the effect of rehabilitation assisted by a robot and enhanced by surface EMG. Research project: Before-after study design. Materials and methods: The study group consisted of 10 post-stroke patients enrolled for therapy with the AMADEO robot for at least 15 sessions. At the beginning and at the end of treatment, the following tests were used for clinical assessment: Fugl-Meyer scale, Box and Block test and Nine Hole Peg test. In the present study, we used surface electromyography (sEMG) to maintain optimal kinematics of hand motion. Whereas sensorial feedback, provided by the robot, was vital in obtaining closed-loop control. Thus, muscle contraction was transmitted to the amplifier through sEMG, activating the mechanism of the robot. Consequentially, sensorial feedback was provided to the patient. Results: Statistically significant improvement of upper limb function was observed in: Fugl-Meyer (p = 0.38) and Box and Block (p = 0.27). The Nine Hole Peg Test did not show statistically significant changes in motor skills of the hand. However, the functional improvement was observed at the level of 6% in the Fugl-Meyer, 15% in the Box and Block, and 2% in the Nine Hole Peg test. Conclusions: Results showed improvement in hand grasp and overall function of the upper limb. Due to sEMG, it was possible to implement robot therapy in the treatment of patients with severe hand impairment.
3
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Sensitivity and specifi city of multichannel surface electromyography in diagnosing fecalincontinence

85%
Nowakowski M., Tomaszewski K. A., Machura Ł., Trybek P., Herman R. M.
Folia Medica Cracoviensia
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2017
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vol. 57
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issue 1
4
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Paraspinal bioelectrical muscle activity differentiation with surface EMG in active seniors

71%
Kielnar R., Oleksy Ł., Grzegorczyk J.
Medical Rehabilitation
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2012
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vol. 16(3)
9-15
PL
Wstęp: Aktywność fizyczna, społeczna, a takŜe intelektualna jest jednym z czynników warunkujących pomyślne starzenie się człowieka. Ruch skutecznie opóźnia proces starzenia się organizmu i zapobiega powstawaniu wielu chorób w naszym organizmie. Cel: Ocena wzorców aktywności mięśniowej mięśni przykręgosłupowych w odcinku lędźwiowym kręgosłupa z wykorzystaniem elektromiografii powierzchniowej w grupie aktywnych seniorów bez objawów bólu krzyża. Materiał i metoda: Badaniem objęto 70 aktywnych studentów uniwersytetu trzeciego wieku. U wszystkich badanych oceniono napięcie mięśni przykręgosłupowych w trakcie testu funkcjonalnego dla odcinka lędźwiowego kręgosłupa. Badanie przeprowadzono z wykorzystaniem sEMG. Wyniki: Podczas większości wykonywanych ruchów u aktywnych osób starszych zaobserwowano zaburzenia aktywności bioelektrycznej mięśni przykręgosłupowych odcinka lędźwiowego kręgosłupa, charakteryzujące się podwyższonym napięciem mięśniowym, zaburzoną symetrią napięcia prawej strony do lewej oraz brakiem rozluźnienia poszczególnych mięśni podczas ruchów, gdzie nie powinny być one aktywne. Wnioski: sEMG pozwala na nieinwazyjne badania przesiewowe wzorców aktywności mięśniowej, może być pomocnym narzędziem w diagnostyce funkcjonalnej odcinka lędźwiowego kręgosłupa u aktywnych seniorów, między innymi dzięki nowatorskim metodom analizy danych.
EN
Background: Physical, social and intellectual activities are the determinants of successful ageing. Movement effectively delays the body’s ageing process and prevents many diseases in our body. Aim: The assessment of lumbar paraspinal muscle activity patterns with surface EMG in an active older population without low back pain.Material and methods: The study included 70 students of the „university of the third age”. The subjects’ paraspinal muscles were assessed during a lumbar spine functional test. All measurements were carried out using sEMG.Results: During most of the performed movements, lumbar paraspinal muscles activation impairments were observed, these being characterized by increased activity, asymmetry and lack of relaxation response.Conclusion: Surface EMG allows for non-invasive muscle pattern screening, therefore it could constitute a valuable tool in lumbar spine functional diagnostics in active older populations through innovatory data analysis.
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