Background According to present guidelines, active exercise is one key component in the comprehensive treatment of nonspecific chronic back pain (NSCBP). Whole body electromyostimulation (WB-EMS) is a safe, and time-effective training method, that may be effective in NSCBP-patients. Methods In this prospective and controlled nonrandomized clinical study, two therapeutic approaches were compared. One group received 20 minutes WB-EMS per week. An active control group (ACG) received a multimodal therapy program. A third group included subjects without back pain. To all groups, the following measurement instruments were applied: Numeric Rating Scale (NRS), Oswestry Disability Index (ODI), North American Spine Society Instrument (NASS); SF 36 survey and measurements for muscular function and postural stability.
Background Before foreign language questionnaires, such as patient reported outcome measures (PROMs), can be scientifically used in the national language, guideline-based translation, cultural adaptation and comprehensive verification of their validity and reliability are needed. The aim of this study was to assess the psychometric properties of the German version of the LCI-5 (LCI-5-D) on a sample of people with lower limb amputation (LLA). Methods The LCI-5 was translated into German (LCI-5-D) based on the ISPOR guidelines for cross-cultural adaptation following pilot testing. The final LCI-5-D was administered to n = 52 lower limb amputees in order to determine the validity and reliability of both the total score and the subscores (“basic items” and “advanced items”). Internal consistency (Cronbachʼs alpha), test-retest reliability (ICC2,1), standard error of the mean (SEM), minimal detectable change (MDC), item-to-total correlation, and item-to-subscale correlation were calculated. Floor and ceiling effects were checked. For construct validity, the Rivermead Mobility Index (RMI) and timed up and go (TUG) test were correlated, and differences of defined subgroups (amputation height and prosthesis user type) were calculated. Results On average, the score of the LCI-5-D was 40.13 ± 16.64 points. High ceiling effects were present for the subscale “basic items” (57.7% maximum score). Internal consistency showed excellent results (Cronbachʼs α = 0.97). A strong correlation to the RMI (r = 0.863; p < 0.001) and to the TUG (r = − 0.714; p < 0.001) demonstrated construct validity. Test-rest reliability was measured after an averaged time span of 5.3 ± 2.47 days and resulted in very high reliability [ICC (2,1) = 0.97; p < 0.001]. MDC was 7.57 points for the total score. Conclusion The LCI-5-D is a valid and reliable PROM for measuring mobility with prostheses in German-speaking lower limb amputees, which is rather suitable for people with low to moderate mobility abilities. It can be used in a German-speaking population.
Zusammenfassung Hintergrund In Deutschland existiert bisher keine deutsche, validierte Version eines patientenbezogenen Messinstruments, das bei Personen mit Amputation der unteren Extremität spezifisch die Funktionsfähigkeit mit Prothese im Alltag erfasst. Der Locomotor Capabilities Index-5 (LCI-5) ist ein international verwendetes Messinstrument zur Erhebung dieses Konstruktes. Ziel Die leitlinienkonforme Übersetzung und kulturelle Adaptation des Locomotor Capabilities Index-5 (LCI-5) in die deutsche Sprache. Methode Der LCI-5 wurde anhand der ISPOR-Leitlinie zur Übersetzung und kulturellen Adaptation von patientenzentrierten Messinstrumenten in die Zielsprache Deutsch übersetzt. In diesem Kontext wurden zunächst zwei unabhängige Vorwärtsübersetzungen in die Zielsprache erstellt und verglichen. Es folgten zwei unabhängige Rückwärtsübersetzungen dieser Synthese durch Muttersprachler der Originalsprache (Englisch) mit einem anschließenden Review. Der daraus resultierende Fragebogen wurde in einer Pilottestung (N = 8) auf Sprach- und Verständnisprobleme sowie kulturelle Stimmigkeit überprüft und angepasst. Ergebnisse Der LCI-5 wurde in die deutsche Version namens Locomotor-Capabilities-Index-5-D (LCI-5-D) übersetzt und kulturell adaptiert. Die Überprüfung des Fragebogens in der Pilottestung führte zu zwei Wortabänderungen. Schlussfolgerung Eine autorisierte Version des LCI-5 konnte in die deutsche Sprache übersetzt werden (LCI-5-D). Die Gütekriterien dieser deutschen Version werden in einer darauf aufbauenden Validationsstudie untersucht.
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