The Journal of Science of Labour
Online ISSN : 2187-2570
Print ISSN : 0022-443X
Volume 94 , Issue 4
Showing 1-2 articles out of 2 articles from the selected issue
Original Articles
  • Shingo MORIIZUMI, Shinnosuke USUI, Kazushige Wada, Mayuko Ueda
    2019 Volume 94 Issue 4 Pages 99-107
    Published: 2019
    Released: December 10, 2019
    JOURNALS FREE ACCESS

    This study tested the effects of the experience-based safety education on human errors triggered by urgency. Of 81 participants, 40 were assigned to the education group that participated in a task related to experience-based safety education. The others were assigned to the control group that participated in a task unrelated to human errors triggered by urgency. Participants in the education group exhibited a reduction in task performance in the urgency condition, in which a time limit was set for the completion of the task. Attitude and behaviour triggered by urgency were assessed by using a questionnaire before (Time 1), shortly after (Time 2) and a month after education (Time 3). The results showed that while the control group did not exhibit any changes in their attitude and behaviour, the education group’s attitude changed in the safe direction from Time 1 to Time 2, and that this tendency persisted in Time 3. The utility and limitation of the educational intervention conducted in this study were discussed based on the findings of this study.

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Field Reports
  • Mariko UEDA, Sayaka HASEGAWA, Rie AKAMATSU
    2018 Volume 94 Issue 4 Pages 108-116
    Published: 2018
    Released: December 10, 2019
    JOURNALS FREE ACCESS

    We conducted a five-day survey of physical activities and diet records for 12 male home delivery drivers in Japan. Their physical activities were measured by a portable accelerometer (Omron HJA-350 IT), which recorded energy consumption and the number of steps. We also collected the drivers’ daily diet records, calculated their daily energy intake and checked the patterns of every meal. The participants were split into two groups according to the differences between daily energy consumption and energy intake (1,000 kcal or more and less than 1,000 kcal). One-third of the estimated energy requirement of the target group accounted for approximately 1,000 kcal. Dietary patterns were then compared between the two groups. The average of the drivers’ energy consumption was 3,227±218kcal/day and the average energy in take was 2,451±671 kcal/day. Only one participant had enough energy intake; the others had lower energy intake than energy consumption. In examining dietary patterns, we found some different characteristics between the two groups. The group that showed a smaller difference between energy consumption and energy intake had more vegetables and protein. The other group, however, showed a bigger difference between energy consumption and energy intake had fewer vegetables and less protein. These results indicate that Japanese male home delivery drivers consume almost 3,000 kcal/day, and that drivers with higher energy intake follow a better diet.

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