Trunk Muscle Activation Patterns, Lumbar Compressive Forces, and Spine Stability When Using the Bodyblade

Abstract

The way the Bodyblade is used may either enhance or compromise spine stability. Associated lumbar compressive forces may be inappropriate for some people with compression-intolerant lumbar spine pathology.

Electromyographic activity of shoulder muscles during exercises performed with oscillatory and non-oscillatory poles

“…Vibration can be applied directly to the muscles and tendons, by specific stimulators, or on the whole body, by vibrating platforms, and finally by using an oscillatory pole or blade 25,26 . Training with an oscillatory pole is different from the other forms of vibration training, because the frequency is low, about 4.5 Hz, and vibrations are not produced by external forces, but by muscular contractions 17,18 . Several mechanisms could lead to an increase in muscular activity during vibration training.…”

“…The occilatory frequency of the pole is responsible for providing resistance during exercises 16 . Exercising with this instrument has been reported to be useful to train shoulder muscle function, since the oscillatory pole is reactive, i.e., using the law of inertia to provide resistance to exercise 17 . Thus, the higher the frequency and oscillation amplitude of the pole, the greater the destabilization force in the body, which in turn requires higher levels of muscle activation to maintain stability 17,18 .…”

“…Exercising with this instrument has been reported to be useful to train shoulder muscle function, since the oscillatory pole is reactive, i.e., using the law of inertia to provide resistance to exercise 17 . Thus, the higher the frequency and oscillation amplitude of the pole, the greater the destabilization force in the body, which in turn requires higher levels of muscle activation to maintain stability 17,18 . Also, the oscillation of the hand-held pole is thought to require rapidly varying eccentric and concentric muscular contractions in the upper extremity, which creates equilibrium between stability and mobility 18 .…”

Padrão de co-ativação dos músculos do tronco durante exercícios com haste oscilatória

“…Atualmente, destacam-se as alterações do recrutamento dos músculos do tronco -o que reduz a estabilidade da coluna vertebral -como o principal fator causal da dor lombar inespecífica (NEWCOMER et al, 2002; VAN DIEEN, CHOLEWICKI & RADEBOLD, 2003). Desse modo, vários programas de intervenção utilizando exercícios de estabilização segmentar da coluna foram propostos com o intuito de aprimorar a estabilidade lombar (AROKOSKI et al, 2004;MCGILL & KARPOWICZ, 2009 Três exercícios com a haste oscilatória -comumente usados no treinamento e reabilitação muscular -foram selecionados para o estudo.…”

Upper Extremity Muscle Activation during Bodyblade Exercises Following Six Weeks of Intervention Focusing on the Lumbopelvic-Hip Complex

“…It has previously been established that implementing the Bodyblade (Mad Dogg Athletics, Venice, CA, USA) into a total body shoulder exercise allows for effective activation of not only the scapular stabilizing muscles, but also LPHC muscles [18,19]. As shoulder rehabilitation has shifted to more of a total body approach, exercises known to activate the musculature of the LPHC could be performed simultaneously with shoulder exercises [20].…”