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Cerebellar transcranial direct current stimulation improves maximum isometric force production during isometric Barbell squats

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Kenville,  Rouven
Institute of General Kinesiology and Athletics Training, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Maudrich,  Tom
Institute of General Kinesiology and Athletics Training, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Maudrich,  Dennis
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Villringer,  Arno
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Clinic for Cognitive Neurology, University of Leipzig, Germany;
MindBrainBody Institute, Berlin School of Mind and Brain, Humboldt University Berlin, Germany;

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Ragert,  Patrick
Institute of General Kinesiology and Athletics Training, University of Leipzig, Germany;
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Kenville, R., Maudrich, T., Maudrich, D., Villringer, A., & Ragert, P. (2020). Cerebellar transcranial direct current stimulation improves maximum isometric force production during isometric Barbell squats. Brain Sciences, 10(4): 235. doi:10.3390/brainsci10040235.


Cite as: http://hdl.handle.net/21.11116/0000-0006-82BC-3
Abstract
Maximum contraction force (MVC) is an important predictor of athletic performance as well as physical fitness throughout life. Many everyday life activities involve multi-joint or whole-body movements that are determined in part through optimized muscle strength. Transcranial direct current stimulation (tDCS) has been reported to enhance muscle strength parameters in single-joint movements after its application to motor cortical areas, although tDCS effects on MIVC in compound movements remain to be investigated. Here, we tested whether anodal tDCS and/or sham stimulation over primary motor cortex (M1) and cerebellum (CB) improves maximum isometric contraction force (MIVC) during isometric barbell squats (iBS). Our results provide novel evidence that CB stimulation enhances MIVC during iBS. Although this indicates that parameters relating to muscle strength can be modulated through anodal tDCS of the cerebellum, our results serve as an initial reference point and need to be extended. Therefore, further studies are necessary to expand knowledge in this area of research through the inclusion of different tDCS paradigms, for example investigating dynamic barbell squats, as well as testing other whole-body movements.