Journal of Human Ergology
Online ISSN : 1884-3964
Print ISSN : 0300-8134
ISSN-L : 0300-8134
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Displaying 1-5 of 5 articles from this issue
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Original paper
  • MAT PILATES INTERVENTION IMPROVES MAXIMAL ISOMETRIC FORCES DURING KNEE FLEXION AND EXTENSION IN HEALTHY YOUNG ADULTS
    ARIHIRO HATTA, MASAHIRO SHIMODA, HIROYUKI FUKUMOTO
    2024 Volume 53 Issue 1-2 Pages 1-6
    Published: 2024
    Released on J-STAGE: March 14, 2025
    DOIhttps://doi.org/10.11183/jhe.53.1-2_1
    JOURNAL FREE ACCESS
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    We aimed to investigate whether mat Pilates intervention improves maximal isometric forces during knee extension and flexion in healthy young adults. This study included 23 college students (13 females and 10 males; aged 20.87 ± 0.76 years) randomly categorized into 2 groups: Pilates group (PG; n = 11; 4 females and 7 males) and control group (CG; n = 12; 9 females and 3 males). Participants in the PG performed a 60-min mat Pilates intervention once weekly for 12 weeks under the supervision of a licensed instructor. Participants in the CG received no Pilates intervention and were instructed to spend their daily life without any physical activity as much as possible. In both PG and CG, the maximal isometric forces were measured during knee extension and flexion movements before and after the intervention. Compared with pre-intervention evaluation, the PG exhibited significant improvements in both isometric knee extensor (p < 0.01) and flexor (p < 0.05) forces at post-intervention evaluation, whereas the CG showed no significant differences. Mat Pilates improved maximal isometric forces during knee flexion and extension. These findings suggest that mat Pilates intervention aids in the neuromuscular facilitation of the lower limbs and improves flexor and extensor muscle function in young adults.
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Special Articles on Research Tools
  • COMPARING THE GAZING BEHAVIOUR OF OLDER AND YOUNG CYCLISTS
    MASAHIRO SHIMODA, TERUO UETAKE
    2024 Volume 53 Issue 1-2 Pages 7-12
    Published: 2024
    Released on J-STAGE: March 14, 2025
    DOIhttps://doi.org/10.11183/jhe.53.1-2_7
    JOURNAL FREE ACCESS
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    This study analysed the perceived attention that cyclists pay on roads, by examining the “gazing” points of 11 older adults and 23 young individuals equipped with eye cameras while cycling. The pictures captured by the camera were analysed to identify the objects viewed by the cyclists while cycling. The experiment was conducted on a main road and a community road. The objects viewed by the cyclists were categorised into nine items indirectly related to bicycle traffic accidents: gates and porches, parking lots, signals, alleys, other bicycles on the road, pedestrians, signs and painted symbols on the road, schoolyards and houses, and other items. The results showed that older cyclists consistently checked their safety at alley intersections on both main and community roads, while young cyclists were comparatively less diligent. Regarding unsafe gazing behaviours, such as looking at schoolyards or houses while cycling, the two groups showed similar results, with most individuals maintaining focus on the road in both settings. However, young cyclists demonstrated less attention to objects, especially at alley intersections, suggesting that such behaviours may be substantially associated with bicycle-related traffic accidents.
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  • AN EMPIRICAL STUDY OF THE CURRENT STATUS OF DIVERSITY FAULTLINES IN JAPANESE WORK ORGANIZATIONS
    TOWARD THE IMPLEMENTATION OF DIVERSITY MANAGEMENT
    TAKUMI IWAASA, NAOTO SHOJI, MOTOKI MIZUNO
    2024 Volume 53 Issue 1-2 Pages 13-19
    Published: 2024
    Released on J-STAGE: March 14, 2025
    DOIhttps://doi.org/10.11183/jhe.53.1-2_13
    JOURNAL FREE ACCESS
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    This empirical study on diversity “faultlines”—hypothetical dividing lines that may split a group into subgroups—conducted for the first time in Japan investigates the current status of faultlines based on 40 attributes (e.g., nationality, ethnicity, age, personality, and attitude). The participants were 1,018 Japanese workers (aged 20–59 years, including 611 males and 407 females) recruited from the registrants of a Japanese research company. We employed a cross-sectional design using an internet-based questionnaire and explored the participants’ perceptions of faultlines in their current workplace (e.g., “Is there a hypothetical line that may split your team/organization into subgroups based on racial differences?”). The results showed that the participants perceived faultlines based on the following attributes: job category (57.2%), job position (50.2%), gender (44.8%), and age (44.3%). In conclusion, Japanese workers tend to perceive faultlines based on task-related attributes, whereas most previous studies have identified faultlines based on relational and demographic attributes. This finding suggests that leaders in diverse teams should focus on reducing the likelihood of faultline formation and conflict among members by recruiting individuals with varied and unique combinations of attributes, such as job category, job position, gender, and age.
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