Forthcoming Articles

International Journal of Human Factors and Ergonomics

International Journal of Human Factors and Ergonomics (IJHFE)

Forthcoming articles have been peer-reviewed and accepted for publication but are pending final changes, are not yet published and may not appear here in their final order of publication until they are assigned to issues. Therefore, the content conforms to our standards but the presentation (e.g. typesetting and proof-reading) is not necessarily up to the Inderscience standard. Additionally, titles, authors, abstracts and keywords may change before publication. Articles will not be published until the final proofs are validated by their authors.

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International Journal of Human Factors and Ergonomics (3 papers in press)

Regular Issues

  • An exploratory investigation of individual differences in cerebral hemodynamics, muscle activity, finger motion, and contact pressure during grasping posture determination   Order a copy of this article
    by Kazuki Hokari, Keita Koto, Jonas A. Pramudita 
    Abstract: This study investigates the individual differences in cerebral hemodynamic changes, muscle activity, finger motion, and contact pressure during grasping posture determination. In the experiment, 13 participants grasp a cylinder while physiological and biomechanical signals are recorded using near-infrared spectroscopy, surface electromyography, an optical motion capture system, and a pressure distribution sensor. The results show that the total hemoglobin changes during grasping exhibited both positive and negative values within individuals. The mean average rectified value of the electromyography signals showed no statistically significant differences or consistent activation patterns during grasp posture determination. The finger motion exhibited overall and proximaldistal variation in joint motion stoppage time, explaining 73.8% variance. Although the maximum value of the total contact pressure varies between participants, higher maximum values are mostly observed when participants are allowed to modify grasping posture to achieve the best grip.
    Keywords: grasping; individual difference; cerebral hemodynamic change; muscle activity; finger motion; contact pressure; cylinder.
    DOI: 10.1504/IJHFE.2026.10078156
     
  • A user-centred ergonomic redesign of a university lectern significantly mitigates postural risk and enhances usability: evidence from REBA and SUS assessments   Order a copy of this article
    by Samira Ranjbar Naserabadi, Naser Hashemi Nejad, Ali Karamoozian, Mostafa Mohammadian 
    Abstract: This study aimed to design, construct, and evaluate an ergonomic lectern reduce postural risk factors associated with musculoskeletal disorders (MSDs) and improve usability for university instructors. Thirty-four instructors were randomly selected. Following a hierarchical task analysis, an ergonomic lectern was prototyped based on Iranian anthropometric data. Posture was assessed using the rapid entire body assessment (REBA) method, and usability was evaluated with the system usability scale (SUS), comparing the new lectern against conventional ones. Using the ergonomic lectern significantly improved instructors' postures (P < 0.05). Its usability score (mean = 82.84) was significantly higher than that of conventional lecterns (P < 0.001). The REBA score indicated a lower priority for corrective action (score of 3 vs. 4), confirming reduced ergonomic risk. A structured, anthropometrically-informed design process successfully produced a lectern that mitigates ergonomic risk factors and enhances usability. This study underscores the importance of tailoring educational workstations to user needs to promote occupational health.
    Keywords: musculoskeletal disorders; posture; system usability scale; SUS.
    DOI: 10.1504/IJHFE.2026.10078516
     
  • Measuring fatigue and visual strain in smartphone users: a validation study   Order a copy of this article
    by Fikrihadi Kurnia, Anak Agung Alit Triadi 
    Abstract: This study evaluated the reliability, validity, and measurement invariance of the fatigue severity scale (FSS) and computer vision syndrome questionnaire (CVS-Q) among 375 smartphone users using PLS-SEM. The reflective FSS model demonstrated excellent internal consistency (CR = 0.892) and robust convergent validity (AVE = 0.543) after pruning two sub-optimal indicators. The formative CVS construct showed strong validity with 14 retained items after removing two non-significant indicators, maintaining low collinearity (VIF < 3.0). Discriminant validity between FSS and CVS was confirmed via latent variable correlation (r = 0.451), proving they represent distinct ergonomic constructs. Furthermore, MICOM analysis successfully established compositional invariance across gender and visual aid usage groups (p > 0.05). Structural comparisons revealed significant demographic disparities, where female users and regular glasses wearers reported significantly higher composite means for both CVS and FSS (p < 0.05). These findings confirm the psychometric robustness of both scales for capturing demographic nuances in digital health research.
    Keywords: fatigue severity scale; FSS; computer vision syndrome; CVS; computer vision syndrome questionnaire; CVS-Q; smartphone; psychometric validation; measurement invariance; PLS-SEM.
    DOI: 10.1504/IJHFE.2026.10078517
     

 

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