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Mode of hand training determines cortical reorganisation: A randomized controlled study in healthy adults

Brogårdh, Christina LU ; Johansson, Fredrik W.; Nygren, Frida and Sjolund, Bengt H. (2010) In Journal of Rehabilitation Medicine2001-01-01+01:00 42(8). p.789-794
Abstract
Objective: To evaluate two commonly used forms of hand training with respect to influence on dexterity and cortical reorganization. Subjects: Thirty healthy volunteers (mean age 24.2 years). Methods: The subjects were randomized to 25 min of shaping exercises or general activity training of the non-dominant hand. The dexterity and the cortical motor maps (number of excitable positions) of the abductor pollicis brevis muscle were evaluated pre- and post-training by the Purdue Peg Board test and transcranial magnetic stimulation, respectively. Results: After shaping exercises the dexterity increased significantly (p <= 0.005) for both hands, mostly so in the non-dominant hand. The cortical motor map of the abductor pollicis brevis muscle... (More)
Objective: To evaluate two commonly used forms of hand training with respect to influence on dexterity and cortical reorganization. Subjects: Thirty healthy volunteers (mean age 24.2 years). Methods: The subjects were randomized to 25 min of shaping exercises or general activity training of the non-dominant hand. The dexterity and the cortical motor maps (number of excitable positions) of the abductor pollicis brevis muscle were evaluated pre- and post-training by the Purdue Peg Board test and transcranial magnetic stimulation, respectively. Results: After shaping exercises the dexterity increased significantly (p <= 0.005) for both hands, mostly so in the non-dominant hand. The cortical motor map of the abductor pollicis brevis muscle shifted forwardly into the pre-motor area without expanding. After general activity training, no significant improvements in dexterity were found for the non-dominant hand. The cortical motor map of the non-dominant abductor pollicis brevis muscle expanded significantly (p = 0.03) in the posterior (sensory) direction. Conclusion: These results indicate that shaping exercises, but not general activity training, increase dexterity of the trained non-dominant hand in parallel with a shift of location of active transcranial magnetic stimulation positions. Shifts of active cortical areas might be important for the interpretation of brain plasticity in common behavioural tasks. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
hand training, dexterity, healthy subjects, stimulation, transcranial magnetic, cortical shift, plasticity
in
Journal of Rehabilitation Medicine2001-01-01+01:00
volume
42
issue
8
pages
789 - 794
publisher
Taylor & Francis
external identifiers
  • wos:000281927000013
  • scopus:77956409642
ISSN
1651-2081
DOI
10.2340/16501977-0588
language
English
LU publication?
yes
id
da270652-5b69-45ec-b430-b6c39372b2ea (old id 1727008)
date added to LUP
2010-12-01 13:07:54
date last changed
2018-05-29 09:53:51
@article{da270652-5b69-45ec-b430-b6c39372b2ea,
  abstract     = {Objective: To evaluate two commonly used forms of hand training with respect to influence on dexterity and cortical reorganization. Subjects: Thirty healthy volunteers (mean age 24.2 years). Methods: The subjects were randomized to 25 min of shaping exercises or general activity training of the non-dominant hand. The dexterity and the cortical motor maps (number of excitable positions) of the abductor pollicis brevis muscle were evaluated pre- and post-training by the Purdue Peg Board test and transcranial magnetic stimulation, respectively. Results: After shaping exercises the dexterity increased significantly (p &lt;= 0.005) for both hands, mostly so in the non-dominant hand. The cortical motor map of the abductor pollicis brevis muscle shifted forwardly into the pre-motor area without expanding. After general activity training, no significant improvements in dexterity were found for the non-dominant hand. The cortical motor map of the non-dominant abductor pollicis brevis muscle expanded significantly (p = 0.03) in the posterior (sensory) direction. Conclusion: These results indicate that shaping exercises, but not general activity training, increase dexterity of the trained non-dominant hand in parallel with a shift of location of active transcranial magnetic stimulation positions. Shifts of active cortical areas might be important for the interpretation of brain plasticity in common behavioural tasks.},
  author       = {Brogårdh, Christina and Johansson, Fredrik W. and Nygren, Frida and Sjolund, Bengt H.},
  issn         = {1651-2081},
  keyword      = {hand training,dexterity,healthy subjects,stimulation,transcranial magnetic,cortical shift,plasticity},
  language     = {eng},
  number       = {8},
  pages        = {789--794},
  publisher    = {Taylor & Francis},
  series       = {Journal of Rehabilitation Medicine2001-01-01+01:00},
  title        = {Mode of hand training determines cortical reorganisation: A randomized controlled study in healthy adults},
  url          = {http://dx.doi.org/10.2340/16501977-0588},
  volume       = {42},
  year         = {2010},
}