[논문]The effect of 8 weeks of treatment with transcranial pulsed electromagnetic fields on hand tremor and inter-hand coherence in persons with Parkinson’s disease

Malling, Anne Sofie Bøgh; Morberg, Bo Mohr; Wermuth, Lene; Gredal, Ole; Bech, Per; Jensen, Bente Rona

doi:10.1186/s12984-019-0491-2

The effect of 8 weeks of treatment with transcranial pulsed electromagnetic fields on hand tremor and inter-hand coherence in persons with Parkinson’s disease 원문보기

Journal of neuroengineering and rehabilitation, v.16, 2019년, pp.19 -

Malling, Anne Sofie Bøgh (Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark) , Morberg, Bo Mohr (Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark) , Wermuth, Lene (Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark) , Gredal, Ole (The Danish Rehabilitation Centre for Neuromuscular Diseases, Taastrup, Denmark) , Bech, Per (Psychiatric Research Unit, Psychiatric Centre North Zealand, University of Copenhagen, Hillerød, Denmark) , Jensen, Bente Rona (Department of Neurology, Odense University Hospital, University of Southern Denmark, Odense, Denmark)

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BackgroundParkinson’s disease (PD) tremor comprises asymmetric rest and postural tremor with unilateral onset. Tremor intensity can be amplified by stress and reduced by attention, and the medical treatment is complex. Mirror movements and unintentional synchronization of bimanual movements, possibly caused by insufficient inhibition of inter-hemispheric crosstalk, have been reported in PD, indicating a lag of lateralization.Potential neuroprotective effects of pulsed electromagnetic fields (PEMF) have been reported in-vitro and in rodents, as have influences of PEMF on human tremor.The aim was to investigate the effect of 8 weeks daily transcranial PEMF treatment (T-PEMF) of persons with PD on rest and postural hand tremor characteristics and on inter-hand coherence.MethodsHand accelerations of 50 PD participants with uni- or bilateral tremor participating in a clinical trial were analysed. A rest and postural tremor task performed during serial subtraction was assessed before and after 8 weeks of T-PEMF (30 min/day, 50 Hz, ±50 V, 3 ms squared pulses) or placebo treatment (sham stimulation 30 min/day). Forty matched healthy persons (no treatment) were included as reference. Intensity and inter-hand coherence related measures were extracted.ResultsThe T-PEMF treatment decreased the inter-hand coherence in the PD group with unilateral postural tremor. The PD group with unilateral postural tremor was less clinically affected by the disease than the PD group with bilateral postural tremor. However, no differences between T-PEMF and placebo treatment on either intensity related or coherence related measures were found when all persons with PD were included in the analyses. The peak power decreased and the tremor intensity tended to decrease in both treatment groups.ConclusionsEight weeks of T-PEMF treatment decreased inter-hand coherence in the PD group with unilateral postural tremor, while no effects of T-PEMF treatment were found for the entire PD group. The unilateral postural tremor group was less clinically affected than the bilateral postural tremor group, suggesting that early treatment initiation may be beneficial. In theory, a reduced inter-hand coherence could result from a neuronal treatment response increasing inter-hemispheric inhibition. However, this requires further studies to determine. Studies of even longer treatment periods would be of interest.Trial registrationClinicalTrials.gov, NCT02125032. Registered 29 April 2014, https://clinicaltrials.gov/ct2/show/NCT02125032?term=NCT02125032&rank=1Electronic supplementary materialThe online version of this article (10.1186/s12984-019-0491-2) contains supplementary material, which is available to authorized users.

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The effect of 8 weeks of treatment with transcranial pulsed electromagnetic fields on hand tremor and inter-hand coherence in persons with Parkinson’s disease 원문보기

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