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Volume 13 (1977)
- Issue 6 Pages 225-
- Issue 5 Pages 185-
- Issue 4 Pages 129-
- Issue 3 Pages 81-
- Issue 2 Pages 41-
- Issue 1 Pages 1-
Volume 13, Issue 6
Displaying 1-7 of 7 articles from this issue
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Kunio KAWAGOE1977 Volume 13 Issue 6 Pages 225-228
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
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Takeshi KONDO, Takao OKUBO, Michiyoshi AOKI, Yoshinori HORIE1977 Volume 13 Issue 6 Pages 229-233
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
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Iwao FUJIMASA1977 Volume 13 Issue 6 Pages 235-238
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
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Takafumi FUJITA1977 Volume 13 Issue 6 Pages 239-246
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
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Comparison of two examiner groupsToshiko IKEDA, Harumi TERADA1977 Volume 13 Issue 6 Pages 247-254
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSMetrical errors are involved in any anthropometric measurements of the living body. In this paper the influence of technical experience on the reliability of somatometrical data was analyzed. Examiners were divided into two groups: an instructor group composed of 4 physical anthropologists and a student group consisting of 4 students of anthropology. Subjects were 2 female and 2 male undressed adults. Measurements were made on 50 out of 191 items necessary in the field of automobile ergonomics. Reliability of data was analyzed in terms of the 99% rate of confidence (Ck), the means of Ck (Mc) and the standard deviation of Mc (Sc).
The differences between the two groups were in general not significant in mean values as well as Mc and Sc. Discrepancies among the examiners were marked in metrical data on the same subjects, particularly for items measured with a tape or small sliding calipers. The results of this survey showed no significant influence of experience on the reliability, but elucidated the personal bias of examiners in their technique of measurements. The detailed criterion of measurements including more precise definition of landmarks and of items should be standardized for most items, especially for those not defined in Martin's Textbook.View full abstractDownload PDF (924K) -
Haruhiko SATO, Masaru ISHII1977 Volume 13 Issue 6 Pages 255-260
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
JOURNAL FREE ACCESSThe method for evaluation of local muscle fatigue in dynamic muscular work using the surface EMG frequency shift in static test contraction was studied experimentally. Dynamic work was accomplished by elbow flexion against various loads (7, 5, 3 and 0kg) every two seconds, one run of dynamic work consisting of ten flexions. The bipolar surface EMG of the biceps brachii was recorded in test contraction using a load of 2kg before work and after each run of dynamic work until exhaustion or ten runs. The EMG was analyzed by the band pass filter technique. A practical measure of the amount of frequency shift was the increase in slow wave ratio, which was the proportion (%) of the integrated EMG in the band from 13 to 64Hz to the total EMG (13-256Hz). As run advanced the EMG showed a frequency lowering, which progressed more rapidly in heavier loading of dynamic work. The EMG frequency spectrum in test contraction recovered at six minutes after continuous twenty flexions against a load of 5kg or 7kg. It is concluded that the method can be used to evaluate local muscle fatigue in dynamic muscular work.View full abstractDownload PDF (1852K) -
[III] importance measure and human errorTakeo YUKIMACHI1977 Volume 13 Issue 6 Pages 261-270
Published: December 15, 1977
Released on J-STAGE: March 11, 2010
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