Samuele Contemori1, Cristina V Dieni2, Jacqueline A Sullivan3, Aldo Ferraresi4, Chiara Occhigrossi4, Francesco Calabrese4, Vito E Pettorossi4, Andrea Biscarini4, Roberto Panichi5. 1. School of Human Movement and Nutrition Sciences, Centre for Sensorimotor Performance, The University of Queensland, Brisbane, Australia. 2. Department of Ophthalmology, University of Alabama At Birmingham, Birmingham, AL, 35294, USA. 3. Department of Philosophy, Western University, London, ON, N6A5B8, Canada. 4. Department of Experimental Medicine, Section of Physiology and Biochemistry, University of Perugia, Via Gambuli 1, 06132, Perugia, Italy. 5. Department of Experimental Medicine, Section of Physiology and Biochemistry, University of Perugia, Via Gambuli 1, 06132, Perugia, Italy. roberto.panichi@unipg.it.
Abstract
PURPOSE: Perceptual and goal-directed behaviors may be improved by repetitive sensory stimulations without practice-based training. Focal muscle vibration (f-MV) modulating the spatiotemporal properties of proprioceptive inflow is well-suited to investigate the effectiveness of sensory stimulation in influencing motor outcomes. Thus, in this study, we verified whether optimized f-MV stimulation patterns might affect motor control of upper limb movements. METHODS: To answer this question, we vibrated the slightly tonically contracted anterior deltoid (AD), posterior deltoid (PD), and pectoralis major muscles in different combinations in forty healthy subjects at a frequency of 100 Hz for 10 min in single or repetitive administrations. We evaluated the vibration effect immediately after f-MV application on upper limb targeted movements tasks, and one week later. We assessed target accuracy, movement mean and peak speed, and normalized Jerk using a 3D optoelectronic motion capture system. Besides, we evaluated AD and PD activity during the tasks using wireless electromyography. RESULTS: We found that f-MV may induce increases (p < 0.05) in movement accuracy, mean speed and smoothness, and changes (p < 0.05) in the electromyographic activity. The main effects of f-MV occurred overtime after repetitive vibration of the AD and PD muscles. CONCLUSION: Thus, in healthy subjects, optimized f-MV stimulation patterns might over time affect the motor control of the upper limb movement. This finding implies that f-MV may improve the individual's ability to produce expected motor outcomes and suggests that it may be used to boost motor skills and learning during training and to support functional recovery in rehabilitation.
PURPOSE: Perceptual and goal-directed behaviors may be improved by repetitive sensory stimulations without practice-based training. Focal muscle vibration (f-MV) modulating the spatiotemporal properties of proprioceptive inflow is well-suited to investigate the effectiveness of sensory stimulation in influencing motor outcomes. Thus, in this study, we verified whether optimized f-MV stimulation patterns might affect motor control of upper limb movements. METHODS: To answer this question, we vibrated the slightly tonically contracted anterior deltoid (AD), posterior deltoid (PD), and pectoralis major muscles in different combinations in forty healthy subjects at a frequency of 100 Hz for 10 min in single or repetitive administrations. We evaluated the vibration effect immediately after f-MV application on upper limb targeted movements tasks, and one week later. We assessed target accuracy, movement mean and peak speed, and normalized Jerk using a 3D optoelectronic motion capture system. Besides, we evaluated AD and PD activity during the tasks using wireless electromyography. RESULTS: We found that f-MV may induce increases (p < 0.05) in movement accuracy, mean speed and smoothness, and changes (p < 0.05) in the electromyographic activity. The main effects of f-MV occurred overtime after repetitive vibration of the AD and PD muscles. CONCLUSION: Thus, in healthy subjects, optimized f-MV stimulation patterns might over time affect the motor control of the upper limb movement. This finding implies that f-MV may improve the individual's ability to produce expected motor outcomes and suggests that it may be used to boost motor skills and learning during training and to support functional recovery in rehabilitation.
Keywords:
Focal vibration; Motor control; Proprioception; Sensorimotor plasticity; Targeted movements; Upper limb movement
Authors: O Brunetti; G M Filippi; M Lorenzini; A Liti; R Panichi; M Roscini; V E Pettorossi; G Cerulli Journal: Knee Surg Sports Traumatol Arthrosc Date: 2006-06-09 Impact factor: 4.342
Authors: Filippo Camerota; Claudia Celletti; Antonio Suppa; Manuela Galli; Veronica Cimolin; Guido Maria Filippi; Giuseppe La Torre; Giorgio Albertini; Fabrizio Stocchi; Maria Francesca De Pandis Journal: Mov Disord Clin Pract Date: 2016-02-11