Document Detail

Influences of age and light touch on the preparation for protective stepping reactions.
MedLine Citation:
PMID:  25141524     Owner:  NLM     Status:  In-Process    
OBJECTIVE: The present study examined the effect of light touch on the preparation for fall-induced protective stepping in elderly and young individuals.
MATERIAL AND METHOD: The subjects were perturbed with forward pull with no-touch and light touch conditions. Anticipatory periods, lift-off onset, center of pressure displacement and velocity were measured and analyzed.
RESULTS: The authors observed a stabilizing effect during with light touch in pre-perturbation periods. During the perturbation, the elderly took steps earlier than did the young individuals by reducing anticipatory periods; however, their anterior stability limit was similar to that of the youth, indicating that the step was pre-selected. In the youth, a delay in anticipatory onset and shorter periods were observed with light touch, resulting from a limitation in lateral limb loading. Additionally, the stabilizing effect in the pre-perturbation period did not influence stabilization of preparatory period before stepping. In the elderly, shorter anticipatory periods and lower stability limits were also shown in light touch conditions. The authors concluded that the elderly were more concerned with a postural task than with light touch.
CONCLUSION: Protective stepping is reflected in the state of balance stability and involves a pre-selection process. Light touch enhances postural stability in stance and impacts the stepping.
Tippawan O-Phartkaruna; Sopa Pichaiyongwongdee; Jarugool Tretriluxana; Rungtiwa Vachalathiti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the Medical Association of Thailand = Chotmaihet thangphaet     Volume:  97 Suppl 7     ISSN:  0125-2208     ISO Abbreviation:  J Med Assoc Thai     Publication Date:  2014 Jul 
Date Detail:
Created Date:  2014-08-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7507216     Medline TA:  J Med Assoc Thai     Country:  Thailand    
Other Details:
Languages:  eng     Pagination:  S33-8     Citation Subset:  IM    
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