ErgonomicsPub Date : 2026-10-20DOI: 10.1080/00140139.2026.2746687
Chuangui Mao, Zijun Lu, Xinxin Zhang, Yuliang Sun
{"title":"Biomechanical responses to incremental backpack loading during stair ascent in male adolescents.","authors":"Chuangui Mao, Zijun Lu, Xinxin Zhang, Yuliang Sun","doi":"10.1080/00140139.2026.2746687","DOIUrl":"https://doi.org/10.1080/00140139.2026.2746687","url":null,"abstract":"<p><p>Backpack carriage is common among adolescents, yet its biomechanical responses during stair ascent remain unclear. This study investigated the effects of incremental backpack loads (0, 10, 15, and 20% body weight) on stair-ascent biomechanics in 16 male adolescents. Three-dimensional motion analysis, kinetics, surface electromyography, and dynamic stability measures were assessed using SPM1D. Increasing loads significantly altered AP-MOS, COM-COP inclination angle, vertical GRF, lower-limb joint mechanics, and muscle activation, while traditional spatiotemporal parameters remained unchanged. Load-related adaptations occurred during single-support, double-support, and swing phases, involving altered activation of key lower-limb muscles. These findings suggest that adolescents maintain external stair-ascent performance through internal biomechanical adjustments under increased backpack loads.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-11"},"PeriodicalIF":2.8,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-20DOI: 10.1080/00140139.2026.2751023
Xing Peng, Yaowei Liang, Fan Wang, Xiang Wang, Rong Shi, Junjie Zhang
{"title":"How visual and auditory task loads differently impair the advantage of multimodal warnings.","authors":"Xing Peng, Yaowei Liang, Fan Wang, Xiang Wang, Rong Shi, Junjie Zhang","doi":"10.1080/00140139.2026.2751023","DOIUrl":"https://doi.org/10.1080/00140139.2026.2751023","url":null,"abstract":"<p><p>Multimodal warnings elicit faster response times than unisensory warnings in cockpits. However, how visual and auditory task demands affect the detection of multimodal warnings remains unclear. This study recruited 30 pilots and 30 control participants to complete a warning response task and an aviation visual or auditory task. The race model inequality analysis indicated that the multisensory enhancement effect decreased as the load increased. The analysis of variance indicated an interaction effect among modality, load level, and task type on response times. Results suggested that demanding tasks may affect the detection of multimodal warnings more substantially than that of unisensory warnings within the same modality. The slowing of response times to multimodal warnings may be driven by the more load-sensitive sensory component. The findings were consistent across groups. This study provides practical implications for multimodal warning design and theoretical insights into multimodal processing.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-13"},"PeriodicalIF":2.8,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-20DOI: 10.1080/00140139.2026.2738038
Anneke Hamann, Alexander Heise, Helge Lenz, Anja Gampe
{"title":"Seeing inside the black box: Effects of algorithmic knowledge on system trustworthiness in aviation.","authors":"Anneke Hamann, Alexander Heise, Helge Lenz, Anja Gampe","doi":"10.1080/00140139.2026.2738038","DOIUrl":"https://doi.org/10.1080/00140139.2026.2738038","url":null,"abstract":"<p><p>Automation has shaped aircraft design for the past seven decades, moving from fully manual control to highly automated systems. Despite this, pilots retain final authority for safety-critical decisions, which requires continuous trust calibration. This study investigated how algorithmic transparency influences pilots' learned trust in an AI-based cockpit assistant. Twenty-one commercial pilots were randomly assigned to an early transparency condition (detailed explanations of the AI's algorithms and performance provided before the tutorial) or a late transparency condition (the same information delivered after the experiment). Each pilot used the assistant during a tutorial and a realistic simulated flight. Mixed-effects ordinal models showed higher trust ratings for the early compared to the late transparency group during both tutorial and flight, and a larger trust increase between phases. In conclusion, providing pilots with timely, clear information about AI processes modestly improves trust and supports calibrated reliance.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-16"},"PeriodicalIF":2.8,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-20DOI: 10.1080/00140139.2026.2738039
Elmira Zahmat Doost, Jamie C Gorman, Matthew J Scalia, Shiwen Zhou, Xiaoyun Yin, Ray Hao, Nathan J McNeese, Wen Duan, Guo Freeman, Gregory J Funke, Michael T Tolston
{"title":"Measuring the spread of trust and distrust through influence in human-autonomy teams.","authors":"Elmira Zahmat Doost, Jamie C Gorman, Matthew J Scalia, Shiwen Zhou, Xiaoyun Yin, Ray Hao, Nathan J McNeese, Wen Duan, Guo Freeman, Gregory J Funke, Michael T Tolston","doi":"10.1080/00140139.2026.2738039","DOIUrl":"https://doi.org/10.1080/00140139.2026.2738039","url":null,"abstract":"<p><p>Trust in human-autonomy teams is dynamic and shaped by ongoing interaction, yet most measures rely on retrospective self-report, limiting detection of how trust and distrust propagate in real time. This study introduces and validates influence-an interaction-based metric computed as the average mutual information between joint and team-state time series-to track the spread of trust and distrust. Forty-five participants completed five simulated Remotely Piloted Aircraft System missions in three-member teams, with trust manipulated through communicative and behavioural spreading across congruent, mismatched, and human-versus-agent conditions. Influence predicted subjective team trust and objective performance during active spreading but not in a no-spreading control and showed strong reliability and construct validity. As validation checks, influence recovered known effects: credibility violations damaged trust most, and human sources outweighed agents. Critically, the influence-trust relationship reversed direction across contexts, revealing a context-dependent mechanism. Influence thus offers a real-time, unobtrusive measure linking interaction structure to team outcomes.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-24"},"PeriodicalIF":2.8,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149228882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-19DOI: 10.1080/00140139.2026.2729412
Nolwenn Lherisson, Jean-François Vautier, Marc Lassagne, Laurent Dehouck, Ali Siadat
{"title":"A new approach to observing intuition during crisis exercises: linguistic markers of cognitive heuristics.","authors":"Nolwenn Lherisson, Jean-François Vautier, Marc Lassagne, Laurent Dehouck, Ali Siadat","doi":"10.1080/00140139.2026.2729412","DOIUrl":"https://doi.org/10.1080/00140139.2026.2729412","url":null,"abstract":"<p><p>Organisations are using crisis exercises to train their crisis management staff. Few studies have examined intuitive decision-making during exercises, which manifests itself in the form of heuristics: cognitive shortcuts. Identifying these heuristics duringobservation of exercises is complex due to the lack of a methodology for considering heuristics during exercises. To overcome this problem, we propose a methodology for observing linguistic markers to identify heuristics during 32 crisis exercises at the French Alternative Energies and Atomic Energy Commission. This research has shown that our methodology provides a framework for identifying seven specific heuristics during crisis exercises. We conclude the article with the contributions of our methodology and prospects for further development.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-14"},"PeriodicalIF":2.8,"publicationDate":"2026-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149221040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-15DOI: 10.1080/00140139.2026.2742501
D Adam Quirk, Adam Hess, Sarah Taylor, Dionna O Roberts Williams, Ryan Pohlig, Diane Dalton, Lou Awad, Jesse V Jacobs, Conor Walsh
{"title":"Moderate exosuit use reduces the incidence of back discomfort in logistic warehouse workers: a randomised controlled trial with an exploratory dose-stratified analysis.","authors":"D Adam Quirk, Adam Hess, Sarah Taylor, Dionna O Roberts Williams, Ryan Pohlig, Diane Dalton, Lou Awad, Jesse V Jacobs, Conor Walsh","doi":"10.1080/00140139.2026.2742501","DOIUrl":"https://doi.org/10.1080/00140139.2026.2742501","url":null,"abstract":"<p><p>Evidence on whether exosuits reduce workplace injuries is mixed. We studied whether exosuits can reduce back discomfort among warehouse workers. Ninety-seven participants were randomised to a control or exosuit group; for exploratory analysis, exosuit participants were stratified as moderate or low users. Surveys at baseline and four follow-ups assessed workplace discomfort, perceived back effort, usability, and adverse events. Intention-to-treat analysis showed that exosuit users had no difference in back discomfort intensity and incidence than the control group. However, exosuit users did have reductions in overall body discomfort. Exploratory analyses showed that moderate users had a 2-3-fold lower incidence of back discomfort than the control group, with 20% reductions in perceived back effort and no increased discomfort at other joints. Consistent exosuit use reduced the likelihood of experiencing low back discomfort. However, disparity between intention-to-treat and dose-stratified analyses suggests effectiveness is dose- and job-fit-dependent, supporting targeted implementation. ClinicalTrials.gov, NCT05802914.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-20"},"PeriodicalIF":2.8,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149197508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-15DOI: 10.1080/00140139.2026.2748363
Nuo Cheng, Ruifeng Yu, Xuanzhi Wang
{"title":"Benefits over risks: a technology acceptance study of LLM-powered conversational agents for non-clinical mental health support.","authors":"Nuo Cheng, Ruifeng Yu, Xuanzhi Wang","doi":"10.1080/00140139.2026.2748363","DOIUrl":"https://doi.org/10.1080/00140139.2026.2748363","url":null,"abstract":"<p><strong>Practitioner summary: </strong>This study used survey data to investigate pre-adoption acceptance intentions towards LLM-powered agents for non-clinical mental health support. The results showed that perceived benefits were the primary driver of acceptance. Additionally, user characteristics such as gender and prior attitudes towards counselling significantly influenced initial acceptance intentions.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-23"},"PeriodicalIF":2.8,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149197463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-14DOI: 10.1080/00140139.2026.2740204
Ryan Thomas Villarreal, Gregory Funke, Denny Yu
{"title":"Team signal detection theory: objective team performance measurement using simulation telemetry.","authors":"Ryan Thomas Villarreal, Gregory Funke, Denny Yu","doi":"10.1080/00140139.2026.2740204","DOIUrl":"https://doi.org/10.1080/00140139.2026.2740204","url":null,"abstract":"<p><p>Current methods for evaluating team performance rely primarily on simple outcome measures and subjective ratings, which offer limited insight into the decision processes driving performance. This study extends signal detection theory (SDT) to teams, deriving sensitivity (<i>d'</i>) and response bias (<i>c</i>) from simulation telemetry. Twenty three-person teams completed five virtual reality tasks varying in interdependence and time pressure while self-reported workload, conventional and SDT metrics, and verbal communication were collected. Team-level sensitivity distinguished conditions that conventional metrics did not. High time pressure reduced sensitivity relative to baseline before task scores declined, suggesting sensitivity may indicate early performance degradation. Response bias became more conservative under combined high interdependence and time pressure, reflecting team strategy shifts. SDT metrics correlated with workload, particularly team-task balancing demands (<i>r</i><sub>s</sub>=-0.68 for <i>d'</i>). Together, sensitivity and bias characterise team performance more completely than accuracy alone by separating discriminative ability from decision strategy.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-15"},"PeriodicalIF":2.8,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149185759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-09DOI: 10.1080/00140139.2026.2742497
Yuxuan Li, Weina Qu, Yan Ge
{"title":"Keep or wave? Evaluating static and dynamic gestures across in-vehicle function-control tasks.","authors":"Yuxuan Li, Weina Qu, Yan Ge","doi":"10.1080/00140139.2026.2742497","DOIUrl":"https://doi.org/10.1080/00140139.2026.2742497","url":null,"abstract":"<p><p>Mid-air gesture interaction is a promising input modality for in-vehicle information systems, but the relative suitability of static and dynamic gestures across vehicle functions remains unclear. Thirty-three licenced drivers completed a within-subject driving-simulator experiment involving nine in-vehicle function-control tasks. Vehicle-control stability, hand-off-wheel duration, gesture-execution fidelity, and subjective user experience were assessed, and linear mixed-effects models examined gesture type, task, and their interaction. Gesture type did not significantly affect longitudinal- or lateral-control stability. However, static gestures produced shorter hand-off-wheel durations, higher execution fidelity, and more favourable ratings of perceived validity, satisfaction, perceived safety, and learnability. Significant gesture type × task interactions emerged for interaction performance and all user-experience dimensions. Static gestures performed relatively consistently across tasks, whereas dynamic gestures were more task dependent. These findings suggest that the evaluated static gestures may serve as more robust candidates, whereas dynamic gestures should be selected according to task-specific gesture-command compatibility.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-16"},"PeriodicalIF":2.8,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149139126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ErgonomicsPub Date : 2026-10-07DOI: 10.1080/00140139.2026.2741274
Qianhan Bao, Yifan Ge, Jiachen Wang, Daofei Li
{"title":"Model-based visual cue design for mitigating motion sickness: development, theoretical analysis, and experimental validation.","authors":"Qianhan Bao, Yifan Ge, Jiachen Wang, Daofei Li","doi":"10.1080/00140139.2026.2741274","DOIUrl":"https://doi.org/10.1080/00140139.2026.2741274","url":null,"abstract":"<p><p>Autonomous vehicles are expected to exacerbate motion sickness (MS), since occupants may engage more in non-driving-related activities. Due to their availability and user experience, presenting visual cues of vehicle motion has become an effective MS mitigation approach. However, approaches to designing visual cues rely on empirical methodology and subjective feedback, while overlooking the mechanism link between cue design and MS mitigation effects. Considering both user-friendliness and systematic optimisation, a model-based visual cue design framework is proposed, adopting a computational model capable of quantifying and interpreting the effectiveness of visual cues on MS. Taking a dot-matrix visual cue as an example, driving simulator experiments were conducted, showing that the design framework provides objective and model-informed insights for cue evaluation and refinement. This research may work as a foundation for data-driven design of MS mitigation strategies in autonomous vehicles.</p>","PeriodicalId":50503,"journal":{"name":"Ergonomics","volume":" ","pages":"1-21"},"PeriodicalIF":2.8,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149128472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}