Placement of a plate under the forefoot in stance: decreasing the excitability of the soleus motoneuron pool.

Abstract:

OBJECTIVE:To investigate the effect of the placement of a plate under the sole of the forefoot on the excitability of the soleus motoneuron pool in stance. DESIGN:While eight neurologically intact subjects remained in stance, a square plate (30 x 30 mm), either 3 mm or 6 mm in thickness, was placed under the left medial plantar eminence, under the left lateral plantar eminence, or under the left forefoot sole between the eminences, or a rectangular plate (120 x 30 mm), either 3 mm or 6 mm in thickness, was placed under the left metatarsal heads. To investigate the excitability of the soleus motoneuron pool, the Hmax/Mmax ratio was estimated. RESULTS:Analysis of variance revealed that the region under which the plate was placed had a significant effect and that the thickness of the plate had a nonsignificant effect on the Hmax/Mmax ratio, without significant interaction between the two factors. Post hoc analysis revealed a significant decrease in the Hmax/Mmax ratio when the square plate was placed under the lateral plantar eminence. CONCLUSIONS:A square plate placed under the lateral plantar eminence inhibited the excitability of the ipsilateral soleus motoneuron pool in stance. This intervention may be useful for reducing spasticity.

journal_name

Am J Phys Med Rehabil

authors

Hiraoka K

doi

10.1097/01.PHM.0000087454.19029.7E

subject

Has Abstract

pub_date

2003-11-01 00:00:00

pages

837-41

issue

11

eissn

0894-9115

issn

1537-7385

pii

00002060-200311000-00003

journal_volume

82

pub_type

临床试验,杂志文章,随机对照试验
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