Limb Segment Load Inhibits the Recovery of Soleus H-Reflex After Segmental Vibration in Humans

Shih Chiao Tseng; Richard K. Shields

doi:10.1080/00222895.2017.1394259

Limb Segment Load Inhibits the Recovery of Soleus H-Reflex After Segmental Vibration in Humans

Shih Chiao Tseng, Richard K. Shields

Research output: Contribution to journal › Article › peer-review

Abstract

We investigated the effects of vertical vibration and compressive load on soleus H-reflex amplitude and postactivation depression. We hypothesized that, in the presence of a compressive load, limb vibration induces a longer suppression of soleus H-reflex. Eleven healthy adults received vibratory stimulation at a fixed frequency (30 Hz) over two loading conditions (0% and 50% of individual's body weight). H-reflex amplitude was depressed ∼88% in both conditions during vibration. Cyclic application of compression after cessation of the vibration caused a persistent reduction in H-reflex excitability and postactivation depression for > 2.5 min. A combination of limb segment vibration and compression may offer a nonpharmacologic method to modulate spinal reflex excitability in people after CNS injury.

Original language	English (US)
Pages (from-to)	631-642
Number of pages	12
Journal	Journal of Motor Behavior
Volume	50
Issue number	6
DOIs	https://doi.org/10.1080/00222895.2017.1394259
State	Published - Nov 2 2018
Externally published	Yes

Keywords

compressive load
mechanical oscillation
postactivation depression
spinal cord injury

ASJC Scopus subject areas

Biophysics
Orthopedics and Sports Medicine
Experimental and Cognitive Psychology
Cognitive Neuroscience

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10.1080/00222895.2017.1394259

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abstract = "We investigated the effects of vertical vibration and compressive load on soleus H-reflex amplitude and postactivation depression. We hypothesized that, in the presence of a compressive load, limb vibration induces a longer suppression of soleus H-reflex. Eleven healthy adults received vibratory stimulation at a fixed frequency (30 Hz) over two loading conditions (0% and 50% of individual's body weight). H-reflex amplitude was depressed ∼88% in both conditions during vibration. Cyclic application of compression after cessation of the vibration caused a persistent reduction in H-reflex excitability and postactivation depression for > 2.5 min. A combination of limb segment vibration and compression may offer a nonpharmacologic method to modulate spinal reflex excitability in people after CNS injury.",

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Limb Segment Load Inhibits the Recovery of Soleus H-Reflex After Segmental Vibration in Humans

Abstract

Keywords

ASJC Scopus subject areas

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