Journal of Human Ergology
Online ISSN : 1884-3964
Print ISSN : 0300-8134
ISSN-L : 0300-8134
38 巻, 1 号
選択された号の論文の4件中1~4を表示しています
Originals
  • SERAJUL HAQUE, ABID ALI KHAN
    2009 年 38 巻 1 号 p. 1-9
    発行日: 2009年
    公開日: 2012/01/20
    ジャーナル フリー
    Work-related musculoskeletal disorders (WMSDs) is related with the frequency of exertion for repetitive tasks requiring heavy load. Different researchers have reported that a poor posture is very much responsible for WMSD if combined with increased load and/or frequency. In the assembly tasks in different industries involve the gripping very commonly. Therefore in the present study it was tried to find the effect of a wrist posture on grip strength. For design of experiment, subjects, flexion/extension and ulnar deviation of the wrist were taken as independent variables and the dependent variable was maximum voluntary contraction (MVC) of grip. The results showed that the effect of flexion/extension angle, ulnar angle and the subject on MVC grip were highly significant (i.e., p<0.001, 0.001 and 0.002 respectively). The two-way interaction effect of flexion/extension angle of the wrist and the subject on MVC grip was also found significant at p<0.001. The other interaction effects were not found significant. MVC grip was found maximum at the neutral wrist posture.
  • TAKEO AOKI, TERUO UETAKE, MASAHIRO SHIMODA
    2009 年 38 巻 1 号 p. 11-18
    発行日: 2009年
    公開日: 2012/01/20
    ジャーナル フリー
    The purpose of this study was to identify the effect of bus passengers' positions on their fear of danger when a bus stopped suddenly. A temporary bus running course with one bus stop was set up on the campus of the Tokyo University of Agriculture and Technology (TUAT). The bus ran the course 14 times with the bus stopping twice during the course, once at the bus stop and again just after re-starting from the bus stop. The driver was asked to brake more strongly than usual when stopping. Sixteen students (15 males and 1 female) between the ages of 18 and 21 years participated. In turn, all participants were asked to take 14 different postures in the bus. Participants were also asked to report their level of fear on a rating scale each time the bus stopped. The study showed that (1) passengers' fear of danger at the first sudden stop was typically higher than that at the second stop, (2) standing passengers who held hand straps experienced more fear than those who held fixed safety devices, (3) bus passengers sitting on the centre of the rear seat had a great risk of injury if the bus stopped suddenly, and (4) when passengers faced the window and stood transversely with respect to from the moving direction of the bus and the bus stopped suddenly, passengers' fear of danger was affected by the side of the bus on which they stood as well as which hand they used to grasp a safety device.
  • SHIRO NAKASHIMA, YUMIKO MIKI, TOMOYUKI MIKI, HONGLI WANG, MASAHIRO YAM ...
    2009 年 38 巻 1 号 p. 19-26
    発行日: 2009年
    公開日: 2012/01/20
    ジャーナル フリー
    The present study focused on the users of sports centres for people with challenges to identify the relationship between sports activities and quality of life (QOL) of the users. A centre established in H Prefecture in 1996 (Centre H) and another in T Prefecture in 2006 (Centre T) were studied to find out how differences in the number of years of sports experience and frequency of sports activities could affect QOL scores of the 36-Item Medical Outcomes Study Short-Form Health Survey (SF-36). The examination of the relationship between the number of years of sports experience and the total QOL scores of the respondents at both centres revealed significantly better QOL scores on the bodily pain (BP) and role emotional (RE) scales among the respondents with three or more years of sports experience, compared to those with less than three years of sports experience. On the whole, the higher the number of years of sports experience and the greater the frequency of sports activities, the better the QOL scores were. These results suggest that sports activities contribute greatly to the improvement of the everyday QOL of challenged individuals and long years of frequent sports activities have a beneficial impact on the QOL of physically-challenged individuals.
Communications
  • ZAHARI TAHA, IBRAHIM M. JOMOAH, HILMA RAIMONA ZADRY
    2009 年 38 巻 1 号 p. 27-32
    発行日: 2009年
    公開日: 2012/01/20
    ジャーナル フリー
    This study presents a comparison of the anthropometric characteristics of 241 Malaysian and 646 Saudi Arabian males aged 20 to 30 years. The mean values, standard deviation (SD), and 5th and 95th percentile values of 26 measurements and 22 proportions of each group were given. The results showed that there were significant differences in a number of body dimensions between these populations, except for eye height and elbow height (standing) and height, eye height, shoulder height, and elbow height (sitting). These results are important for the ergonomic design of workstations, personal protective equipment, tools, interface systems and furniture: The presented data may be useful for providing a safer, more productive and user-friendly workplace for Malaysian and Saudi Arabian populations.
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