Trial reportExperimental brain research2026
Load-dependent dissociation between H-reflex amplitude and background EMG activity during oscillatory loading: implications for the bone myoregulation reflex.
Trial report in Experimental brain research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
9 authors.
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Abstract
Under static postural loading and graded contractions, H-reflex amplitude may be reduced despite increased background EMG activity (BGA), indicating a dissociation between H-reflex amplitude and motor output. Whether oscillatory mechanical loading, such as whole-body vibration (WBV), induces a similar dissociation remains unclear. The bone myoregulation reflex (BMR) is a load-dependent response to oscillatory stimuli. This study investigated whether WBV produces a dissociation between H-reflex excitability and motor output, evaluating the BMR's potential contribution to this dissociation. Fifteen healthy volunteers were assessed during quiet standing under varied postural (single/double-leg) and platform displacement (zero/1.1/2.2 mm) conditions. Soleus H-reflex amplitude (H/Mmax) and normalized BGA were derived from the recorded EMG signals. The reflex evoked during WBV was identified as the BMR. To quantify BMR activity, the rectified EMG signal was integrated over the 8-s vibration period, representing the cumulative motor output induced by the mechanical stimuli. BMR latency was sensitive to postural load distribution. Increasing oscillatory loading magnitude produced a marked reduction in the H/Mmax ratio (p < 0.001, η
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