Bonin, Veronika

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Determination of the in vivo loading of the lumbar spine with a new approach directly at the workplace : ffirst results for nurses
(Elsevier, 2000-10-01)
Morlock, Michael
;
Bonin, Veronika
;
Deuretzbacher, Georg
;
Müller, Gerhard
;
Honl, Matthias
Objective. To determine the magnitude of workplace loading for nurses with and without a history of low back pain.Design. A measurement system for the assessment of workplace loading as well as a model for the calculation of lumbo-sacral junction loading was designed and applied to a group of 12 nurses with and without a history of low back pain.Background. Disagreement exists regarding the key factors in the aetiology of low back pain. Traditionally workplace loading is viewed as the dominant influence. Data for workplace loading in jobs with non-uniform tasks, however, do rarely exist.Methods. A three-dimensional inverse-dynamic and force distribution model as well as the respective data acquisition system was used to assess the workplace loading of 12 nurses from surgical departments of two hospitals. The nurses were assigned to two groups based on their history of low back pain (with/without). Workplace loading was measured continuously for 4 h.Results. No differences in workplace loading between nurses with/without a history of low back pain were found. Maximum values of the compressive force at the lumbo-sacral junction were high and well above suggested workplace load limits. High values occurred only during short-time periods (about 0.4% of total shift duration).Conclusions. A system for the assessment of overall workplace loading has been developed. First results for nurses suggest that critical loadings do exist at the workplace, even so they might not be the decisive factor for the development of low back pain. Relevance - Preventative measures for low back pain in nursing have to include prevention of critical workplace loading. This approach by itself, however, is probably not sufficient.
Publicationtype: Journal Article
7
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Statistische und biomechanische Untersuchung ausgewählter Aspekte der Begutachtung der BK2108 mittels des Erfassungsbogens EBO2108 des Technischen Aufsichtsdienstes
(Monade, 1998)
Morlock, Michael
;
Bonin, Veronika
;
Hansen, I.
;
Schneider, Erich
Publicationtype: Conference Paper
5
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Biomechanische Untersuchung zur Quantifizierung der Belastung der Wirbelsäule bei Beschäftigten im Gesundheitsdienst
(BGW, 1998)
Morlock, Michael
;
Schneider, Erich
;
Bonin, Veronika
;
Hansen, I.
Publicationtype: Book part
13
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Biomechanische Untersuchungen zur Quantifizierung der Belastung der Wirbelsäule im Pflegeberuf
(Springer, 1998)
Morlock, Michael
;
Bonin, Veronika
;
Schneider, Erich
Publicationtype: Book part
3
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Trunk muscle fatigue and associated EMG changes during a dynamic iso-inertial test
(1997)
Morlock, Michael
;
Bonin, Veronika
;
Müller, Gerd
;
Schneider, Erich
This study was designed to investigate the relationship between trunk muscle fatigue and associated changes in the electromyographic (EMG) signals during a dynamic iso-inertial test. Eleven subjects performed dynamic trunk flexion/extension movements against 40% maximum voluntary contraction (MVC) torque until exhaustion in a tri-axial trunk dynamometer. EMG parameters in the time and frequency domain were studied by analysing changes of the signal amplitudes and the spectral density (using the zero-crossing-rate and the median frequency). The kinematics of the movement were analysed according to the movement velocities and the deviations from the required movement plane. The flexion and extension velocities decreased from the beginning to the end of the test. Movement deviations from the sagittal plane into the frontal and transverse plane increased with increasing test duration, as did the EMG amplitude. The median frequency during periods with maximum muscle activity decreased, as did the zero-crossing-rate. The increase in amplitude and decrease in median frequency were more pronounced in the trunk flexors than in the trunk extensors. The parameters of median frequency, zero-crossing-rate and amplitude seem to be sensitive identifiers of muscle fatigue during well-controlled dynamic contractions. While the kinematic data did not yield any information on the mechanisms of the fatigue, changes in the EMG parameters demonstrated that the duration of the test was limited by the fatigue of the trunk flexors.
Publicationtype: Journal Article
9
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Die Rolle der Muskulatur bei bandscheibenbedingten Erkrankungen der Wirbelsäule
(Monade, 1997)
Morlock, Michael
;
Bonin, Veronika
;
Hansen, I.
;
Schneider, Erich
;
Wolter, D.
Publicationtype: Conference Paper
3
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Beschwerden der Lendenwirbelsäule im Pflegeberuf : Untersuchung kausaler Faktoren, erste Ergebnisse
(Monade, 1996)
Morlock, Michael
;
Bonin, Veronika
;
Lehner, M.
;
Meyer, K.
;
Schneider, Erich
Publicationtype: Conference Paper
13
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Biomechanische Belastungsanalyse mittels Modellen
(Academia Verlag, 1996)
Morlock, Michael
;
Schneider, Erich
;
Bonin, Veronika
Publicationtype: Journal Article
4
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Messung der Rückenbelastung am Arbeitsplatz
(Monade, 1994)
Morlock, Michael
;
Schneider, Erich
;
Bonin, Veronika
Publicationtype: Book part
5

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