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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 52 (1983), S. 423-428 
    ISSN: 1432-1106
    Keywords: Human posture ; Postural “reflexes” ; Change of latency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The functional role of spinal and supraspinal EMG-responses for the maintenance of upright human posture was investigated in ten healthy subjects standing on a force measuring platform, which could be rotated in pitch around an axis aligned with the subject's ankle joint. Voluntary changes of body posture prior to the platform movement by leaning forward or backward led to a change in the amplitude and temporal organization of EMG-responses as compared to platform movements starting from a neutral position. Tilting the platform toe-up while leaning backward led to an increase of the latency of the short- and medium-latency responses in the triceps surae muscle and to a decrease of the latency of the stabilizing response in the anterior tibial muscle. Functionally, a cocontraction of both antagonistic muscles could be observed which partly compensated for the destabilizing action of the “reflex” response in the stretched triceps surae muscle. In analogy, leaning forward and tilting the platform toedown led to a cocontraction of the two antagonistic muscles. The observed changes of latencies of short-, medium-, and long-latency response show the functional variability of segmental and suprasegmental “reflex” mechanisms. EMG-activities, which are functionally destabilizing posture, can be suppressed or compensated by reflexive cocontractions of antagonists.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Experimental brain research 45 (1982), S. 126-132 
    ISSN: 1432-1106
    Keywords: Human posture ; Induced sway ; Visual stabilization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Displacements of the center of foot pressure, the hip and the head were recorded in six subjects standing on a platform, sinusoidally tilting in pitch(anterior-posterior).Stimulusfrequenciesranged between 0.01 and 1 Hz. Stimulus amplitudes were 2, 4 and 6 °. With eyes open the displacements were minimal at 0.3 Hz. With eyes closed, however, induced sway was maximal at this frequency. The apparent lack of visual stabilization at the lowest frequency (0.01 Hz) might be attributed to a subthreshold velocity of the retinal image motion induced by the swaying body. A similar absence of visual stabilization at 1 Hz is assumed to indicate the limit of the working range of visual stabilization of posture. Independent of stimulus amplitude a phase lead of about 90 ° was found at 0.01 Hz. This decreased with increasing frequency up to a phase lag of 100 ° at the highest frequency (1 Hz). Head stabilization was generally more effective than hip stabilization. EMG recordings from the leg muscles suggest that with eyes closed the center of force is mainly stabilized by leg muscle activity, while with eyes open this stabilization is best, when vision allows for stabilization of body posture by intersegmental movements between head, trunk and legs.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Schmerz 13 (1999), S. 196-200 
    ISSN: 1432-2129
    Keywords: Schlüsselwörter Migräne ; Akupunktur ; Alternative Therapiemethoden ; Diagnostik ; Entspannungsverfahren ; Psychotherapie ; Key words Migraine ; Acupuncture ; Paramedical treatment methods ; Diagnostic features ; Relaxation methods ; Psychotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Background: Migraine is a common neurological disorder (16% women, 6% men) associated with high direct and indirect costs. We evaluated the diagnostic and paramedical therapeutic measures by estimating the expenditure per patient and the effect of treatment. Methods: A questionnaire was sent to 1000 patients attending the Essen outpatient headache centre in 1995. A total of 293 patients responded, of whom 165 were eligible and could be evaluated. Patients were asked to report diagnostic tests, paramedical treatments applied, average duration of success (defined as meaningfuly reduction in migraine frequency) and costs of paramedical therapy. Results: Paramedical methods of therapy most frequently used were acupuncture, special pads, relaxation methods and herbal therapy. A total of 579 (3.5 on average) diagnostic procedures such as brain or cervical spine CT and MRI or EEG was performed. The average cost for acupuncture was $ 465, while the success was maintained for 3.2 months. $ 1510 was spent on psychotherapy, which was successful for 1.7 months. Patients spent $ 93 for relaxation methods, achieving migraine relief for 7.4 months. Conclusion: Paramedical treatments lack scientific proof, while both acute and prophylactic treatment strategies have been successfully tested in many clinical trials. Paramedical treatment shows a good temporally effect in individual patients.
    Notes: Zusammenfassung Einleitung: Migräne ist eine weit verbreitete (16% aller Frauen, 6% aller Männer) neurologische Erkrankung, die hohe direkte und indirekte Kosten verursacht. Methode: Ziel der Studie war, mittels eines Fragebogens, der an 1000 Patienten, die 1995 die Kopfschmerzambulanz der Uniklinik Essen aufsuchten, verschickt wurde, Auskunft über durchgeführte alternative Therapieverfahren, den damit für die Patienten entstandenen Kosten und den Nutzen (definiert als subjektive Reduktion des Schmerzes oder der Attackenfrequenz) zu erhalten. Weiterhin wurde nach durchgeführten apparativen diagnostischen Verfahren gefragt. Ergebnisse: Die am häufigsten genutzten alternativen Therapieverfahren waren Akupunktur, Lagerungshilfsmittel, Entspannungsverfahren und heilpflanzliche Präparate. 579 diagnostische Verfahren (durchschnittlich 3,5 pro Patient) wie CT und MRT des Kopfs oder EEG wurden durchgeführt. Die durchschnittlichen Kosten für Akupunktur betrugen 791  DM. Der von den Patienten angegebene Erfolg lag hier bei 3,2 Monaten. 2567  DM wurden für Psychotherapie ausgegeben. Die Patienten profitierten lediglich 1,7 Monate von dieser Therapieform. Das Ergebnis zeigt weiterhin, daß die Entspannungsverfahren die beste Kosten-Nutzen-Relation aufweisen (185  DM/7,2 Monate). Schlußfolgerung: Außer für das Muskelrelaxationsverfahren nach Jacobson als Entspannungsverfahren gibt es keinen wissenschaftlichen Nachweis für die Wirksamkeit von alternativen Therapiestrategien. Einzelne Patienten berichten jedoch temporär über Erfolge von alternativen Therapiemöglichkeiten. Die Wirksamkeit schulmedizinischer medikamentöser Verfahren ist durch wissenschaftliche Untersuchungen gut belegt, und die Patienten profitieren bei richtiger Anwendung der Therapieempfehlungen von diesen. Auch für alternative Therapieverfahren muß der wissenschafliche Nachweis der Wirksamkeit gefordert werden.
    Type of Medium: Electronic Resource
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