Abstract
BackgroundThe aim of this study was to compare through surface electromyographic (sEMG) recordings of the maximum voluntary contraction (MVC) on dry land and in water by manual muscle test (MMT).MethodSixteen healthy right-handed subjects (8 males and 8 females) participated in measurement of muscle activation of the right shoulder. The selected muscles were the cervical erector spinae, trapezius, pectoralis, anterior deltoid, middle deltoid, infraspinatus and latissimus dorsi. The MVC test conditions were random with respect to the order on the land/in water.ResultsFor each muscle, the MVC test was performed and measured through sEMG to determine differences in muscle activation in both conditions. For all muscles except the latissimus dorsi, no significant differences were observed between land and water MVC scores (p = 0.063–0.679) and precision (%Diff = 7–10%) were observed between MVC conditions in the muscles trapezius, anterior deltoid and middle deltoid.ConclusionsIf the procedure for data collection is optimal, under MMT conditions it appears that comparable MVC sEMG values were achieved on land and in water and the integrity of the EMG recordings were maintained during wáter immersion.
Highlights
The aim of this study was to compare through surface electromyographic recordings of the maximum voluntary contraction (MVC) on dry land and in water by manual muscle test (MMT)
For all muscles except the latissimus dorsi, no significant differences were observed between land and water MVC scores (p = 0.063–0.679) and precision (%Diff = 7–10%) were observed between MVC conditions in the muscles trapezius, anterior deltoid and middle deltoid
If the procedure for data collection is optimal, under MMT conditions it appears that comparable MVC surface electromyographic (sEMG) values were achieved on land and in water and the integrity of the EMG recordings were maintained during wáter immersion
Summary
The aim of this study was to compare through surface electromyographic (sEMG) recordings of the maximum voluntary contraction (MVC) on dry land and in water by manual muscle test (MMT). Electromyography (EMG) has emerged very recently in the area of aquatic physiotherapy (APT) [1]. This comes with the goal of applying new tools in people with some type of dysfunction due to any cause of muscle activation [2,3,4]. Motion is critical to restoration of normal shoulder function. Aquatic therapy has been promoted as a method for increasing range of motion while minimizing stress on the shoulder [1]. Buoyancy acts against the body to reduce the load at the joints, while
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