The Influence of an Acute Bout of Whole Body Vibration on Human Postural Control Responses

Abstract

The use of vibrating platforms has become increasingly available, and popular at sports and rehabilitation institutes. Given the discrepancies in the literature regarding whole body vibration (WBV) and human reflexive responses, the purpose of this study was to examine the acute effects of WBV on postural response latencies, as well as associated electromyography measures of the lower extremities during balance perturbations. Reflexive responses during backward and forward balance perturbations were examined before, after, and 10 min after a bout of WBV. The findings suggest that following an acute bout of whole body vibration, muscle activity of the lower extremities is decreased during a reflexive response to an unexpected perturbation, and may be associated with faster reaction time.

The Influence of Shoe and Cleat Type on Lower Extremity Muscle Activation in Youth Baseball Pitchers

“…Surface electromyography (EMG) was recorded at 1000 Hz using an 8-channel Noraxon Telemyo DTS 900 system (Noraxon USA, INC, Scottsdale, AZ, USA) synced with Vicon Nexus (Oxford, UK) motion capture software. Three, five-second barefoot MVIC trials separated by 30 s were completed for each muscle of interest and were obtained during knee flexion (semitendinosus), knee extension (vastus medialis), dorsiflexion (tibialis anterior), and plantarflexion (medial gastrocnemius) (Allen et al, 2016;Donahue et al, 2019;Wilson et al, 2018). Knee flexion and extension had participants pull and push, respectively, into a padded weight bench with a leg attachment.…”