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- W3125018545 abstract "Abstract The mechanical muscular oscillations are rarely the objective of investigations regarding the identification of a biomarker for Parkinson’s disease (PD). Therefore, the aim of this study was to investigate whether or not this specific motor output differs between PD patients and controls. The novelty is that patients without tremor are investigated performing a unilateral isometric motor task. The force of armflexors and the forearm acceleration (ACC) were recorded as well as the mechanomyography of the biceps brachii (MMGbi), brachioradialis (MMGbra) and pectoralis major (MMGpect) muscles using a piezoelectric-sensor-based system during a unilateral motor task at 70% of the MVIC. The frequency, a power-frequency-ratio, the amplitude variation, the slope of amplitudes and their interlimb asymmetries were analysed. The results indicate that the oscillatory behavior of muscular output in PD without tremor deviates from controls in some parameters: Significant differences appeared for the power-frequency-ratio ( p = 0.001, r = 0.43) and for the amplitude variation ( p = 0.003, r = 0.34) of MMGpect. The interlimb asymmetries differed significantly concerning the power-frequency-ratio of MMGbi ( p = 0.013, r = 0.42) and MMGbra ( p = 0.048, r = 0.39) as well as regarding the mean frequency ( p = 0.004, r = 0.48) and amplitude variation of MMGpect ( p = 0.033, r = 0.37). The mean (M) and variation coefficient (CV) of slope of ACC differed significantly (M: p = 0.022, r = 0.33; CV: p = 0.004, r = 0.43). All other parameters showed no significant differences between PD and controls. It remains open, if this altered mechanical muscular output is reproducible and specific for PD." @default.
- W3125018545 created "2021-02-01" @default.
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- W3125018545 date "2021-01-29" @default.
- W3125018545 modified "2023-09-26" @default.
- W3125018545 title "Mechanomyography and acceleration show interlimb asymmetries in Parkinson patients without tremor compared to controls during a unilateral motor task" @default.
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- W3125018545 doi "https://doi.org/10.1038/s41598-021-81672-z" @default.
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