Document Detail

Provisional norms by age group for Japanese women on the controlled force exertion test using a quasi-random display.
MedLine Citation:
PMID:  20499570     Owner:  NLM     Status:  MEDLINE    
This study examined age group and individual differences in the controlled force exertion test using quasi-random display and proposed a provisional norm in 249 female participants who were right-handed and aged 15 to 84 years. The participants matched their submaximal grip strength exertions to changing demand values, appearing as a quasi-random wave on the display of a personal computer. The quasi-random waveform changed in pi with amplitude and in pi/2 with frequency (peak and mean frequency were 0.1 Hz in both waveforms). The participants performed the controlled force exertion test three times at 1-min. intervals (single trials were 40 sec.), after one practice trial using the dominant hand. The total sum of the percent of differences between the demand value and the grip exertion value for 25 sec. was used as an evaluation parameter. Measurements showed a right-skewed distribution, which was normal after logarithmic transformation. Analysis of variance showed significant differences in the means of each age group, and test performance decreased after 50 years of age. Norms for each age group were established. An individual's controlled force exertion by the provisional norm as devised in this study can be properly evaluated.
Yoshinori Nagasawa; Shinichi Demura
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Perceptual and motor skills     Volume:  110     ISSN:  0031-5125     ISO Abbreviation:  Percept Mot Skills     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-05-26     Completed Date:  2010-06-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401131     Medline TA:  Percept Mot Skills     Country:  United States    
Other Details:
Languages:  eng     Pagination:  613-24     Citation Subset:  IM    
Kyoto Pharmaceutical University, 5 Nakauchi-cho, Misasagi, Yamashina-ku, Kyoto City, Kyoto 607-8414, Japan.
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MeSH Terms
Aged, 80 and over
Aging / psychology*
Hand Strength*
Mathematical Computing
Middle Aged
Muscle Strength Dynamometer
Practice (Psychology)
Reference Values
Signal Processing, Computer-Assisted
Young Adult

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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