Applied Ergonomics最新文献_第3页

Effects of DC-powered pistol grip tool location and orientation on operator upper extremity stiffness and damping

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-03-03 DOI: 10.1016/j.apergo.2025.104491

Raj Arjun, Naveen Chandrashekar

{"title":"Effects of DC-powered pistol grip tool location and orientation on operator upper extremity stiffness and damping","authors":"Raj Arjun, Naveen Chandrashekar","doi":"10.1016/j.apergo.2025.104491","DOIUrl":"10.1016/j.apergo.2025.104491","url":null,"abstract":"<div><div>In automotive assembly lines, workers routinely used DC-powered pistol grip tools for the installation of threaded fasteners. The stiffness and damping offered by the hand-tool system dictates the handle displacement due to the reaction torque. The aim of the study was to predict the typical ranges of stiffness and damping offered by the upper extremity in different wrist orientations and locations while operating a pistol-grip hand tool. The hand-tool system was represented using a single degree-of-freedom torsional model and a deterministic approach was adopted to identify the system parameters. Tightening tasks were executed by ten experienced hand-tool operators at three torque levels (5 Nm, 7.5 Nm, and 10 Nm) and at four different fastener locations corresponding to varying wrist orientations. At 5 Nm, 7.5 Nm, and 10 Nm torques, the mean operator stiffnesses were 645 N/m, 879.5 N/m, and 1019 N/m respectively with a mean damping being 22.88 N/m, 15.14 N/m and 12.38 N/m respectively. The stiffness coefficients were different between wrist positions but not the damping coefficients. The research demonstrates the approach to model pistol grip hand tool operation and determine the stiffness and damping parameters. This approach could be used for determining optimal torque ranges and positions to minimize rotary tool handle displacement due to reaction torque, thereby reducing the risk of injury.</div></div>","PeriodicalId":55502,"journal":{"name":"Applied Ergonomics","volume":"126 ","pages":"Article 104491"},"PeriodicalIF":3.1,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development, validation, acceptability and usability of a device-based system to measure sit-stand desk usage

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-03-02 DOI: 10.1016/j.apergo.2025.104490

Genevieve N. Healy , Alejandro Melendez-Calderon , Sami Kaab , Noah Bongers , Katherine A. Heseltine , Chan Hi Yue , George Thomas , Bronwyn K. Clark

{"title":"Development, validation, acceptability and usability of a device-based system to measure sit-stand desk usage","authors":"Genevieve N. Healy , Alejandro Melendez-Calderon , Sami Kaab , Noah Bongers , Katherine A. Heseltine , Chan Hi Yue , George Thomas , Bronwyn K. Clark","doi":"10.1016/j.apergo.2025.104490","DOIUrl":"10.1016/j.apergo.2025.104490","url":null,"abstract":"<div><div>We describe the development and testing (across three studies) of an open-source device designed to measure sit-stand desk usage: the Desk Positioning System (DPS). Accuracy of the DPS was assessed under prescribed (Study 1) and free-living (Study 2; video criterion) conditions, across multiple desk-types. Study 3 assessed usability and acceptability in the short-term (1-week) and longer-term (5-weeks).</div></div><div><h3>Results</h3><div>In Study 1, the DPS was 100% accurate at identifying most conditions (presence at desk 59/72 conditions, detecting desk height 166/168). In Study 2 (n = 10) the DPS demonstrated high accuracy (F1>0.95) and precision (>0.98) against the criterion (7866 observations). Study 3 participants (n = 23) reported high device acceptability in both the short- (mean [sd] 4.4/5 [SD 0.4]) and longer-term (4.6/5 [0.5]). Usability was above the 68-score industry benchmark at the short- (72.4/100 [14.2]) and longer-term (74.7/100 [18.5]).</div></div><div><h3>Conclusion</h3><div>The DPS may provide an accurate, acceptable and useable way of understanding sit-stand desk usage.</div></div>","PeriodicalId":55502,"journal":{"name":"Applied Ergonomics","volume":"126 ","pages":"Article 104490"},"PeriodicalIF":3.1,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics of COVID-19 crisis management in hospitals and its long-term effects: An analysis using organizational resilience

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-03-01 DOI: 10.1016/j.apergo.2025.104486

Nora Oufi , Cecila De la Garza , Adelaide Nascimento

引用次数: 0

Understanding the role of beliefs on intentions and actual usage of a tool for self-management of mental health among college students

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-27 DOI: 10.1016/j.apergo.2025.104485

Karim Zahed, Carl Markert, Farzan Sasangohar

{"title":"Understanding the role of beliefs on intentions and actual usage of a tool for self-management of mental health among college students","authors":"Karim Zahed, Carl Markert, Farzan Sasangohar","doi":"10.1016/j.apergo.2025.104485","DOIUrl":"10.1016/j.apergo.2025.104485","url":null,"abstract":"<div><div>Mental health issues are prevalent among college students, with digital interventions lacking in attempts to reduce participant attrition and address low engagement with technology. This study assessed changes in college students' beliefs regarding mental health after exposure to a digital mental health self-management coaching and education app, the Mental Health Evaluation and Lookout Program (mHELP). Participants' beliefs, measured using constructs from the Health Belief Model and Technology Acceptance Model, were compared to user engagement and changes in scores on validated scales for stress, depression, and anxiety. Participant beliefs including <em>self-efficacy</em>, <em>perceived ease of use</em>, and <em>cues to action</em> became more positive post-intervention. Higher participant <em>self-efficacy</em> indicated lower stress, anxiety, and depression ratings. Participants who believed stress to be a serious <em>health threat</em> and perceived the app as <em>useful</em> and <em>easy to use</em> were more likely to engage with the app. Providing digital mental health coaching showed significant relationships between students’ beliefs regarding mental health self-management, their engagement with the app, and the reduction in stress and anxiety.</div></div>","PeriodicalId":55502,"journal":{"name":"Applied Ergonomics","volume":"126 ","pages":"Article 104485"},"PeriodicalIF":3.1,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving dynamic endurance time predictions for shoulder fatigue: A comparative evaluation

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-24 DOI: 10.1016/j.apergo.2025.104480

Patricia O'Sullivan , Matteo Menolotto , Brendan O'Flynn , Dimitrios-Sokratis Komaris

{"title":"Improving dynamic endurance time predictions for shoulder fatigue: A comparative evaluation","authors":"Patricia O'Sullivan , Matteo Menolotto , Brendan O'Flynn , Dimitrios-Sokratis Komaris","doi":"10.1016/j.apergo.2025.104480","DOIUrl":"10.1016/j.apergo.2025.104480","url":null,"abstract":"<div><div>Work-related musculoskeletal disorders (WMSDs) are commonplace in industry and a host of qualitative and quantitative approaches have been used to assuage the problem, including wearable sensors and biomechanical endurance models, both of which were used in the present study. Six endurance models (consumed endurance, new improved consumed endurance and the exponential and power Frey Law and Avin general and shoulder models) with four alternative maximum torque (<span><math><mrow><msub><mrow><mi>T</mi><mi>o</mi><mi>r</mi><mi>q</mi><mi>u</mi><mi>e</mi></mrow><mi>max</mi></msub></mrow></math></span>) quantification methods, including a novel approach to generate <span><math><mrow><msub><mrow><mi>T</mi><mi>o</mi><mi>r</mi><mi>q</mi><mi>u</mi><mi>e</mi></mrow><mi>max</mi></msub></mrow></math></span>, were compared. The proposed approach to quantify <span><math><mrow><msub><mrow><mi>T</mi><mi>o</mi><mi>r</mi><mi>q</mi><mi>u</mi><mi>e</mi></mrow><mi>max</mi></msub></mrow></math></span>, in combination with the new improved consumed endurance model produced the lowest root mean square errors (RMSE), and indicated improved performance compared to the literature. The mean RMSE was reduced from 41.08s to 19.11s for all subjects, from 26.13s to 12.16s for males, and 51.28s to 24.45s for females using the proposed method. R<sup>2</sup> for 25% and 45% standardised intensity dynamic tasks were .459 and .314 respectively, P < .01. This research provided an optimised and individualised endurance prediction approach for loaded dynamic movements which can be applied to industry tasks and may lead to reduced upper-limb strains, and potentially WMSDs.</div></div>","PeriodicalId":55502,"journal":{"name":"Applied Ergonomics","volume":"125 ","pages":"Article 104480"},"PeriodicalIF":3.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of surgical human-robot interactions and measures during robotic-assisted surgery: A scoping review

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-20 DOI: 10.1016/j.apergo.2025.104478

Matthew Ball, Patrick Fuller, Jackie S. Cha

引用次数: 0

Working memory capacity improves checking performance for errors on a simulated rail control task

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-20 DOI: 10.1016/j.apergo.2025.104482

Ryan D. McMullan , Nanda Aryal , Ling Li , Mark Wiggins , Joanna Clive , Johanna I. Westbrook

引用次数: 0

An automated approach for assessing pressure thresholds on the side of the head

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-20 DOI: 10.1016/j.apergo.2025.104483

Yujia Du, Kexiang Liu, Yuxin Ju, Meng Qiu, Haining Wang

{"title":"An automated approach for assessing pressure thresholds on the side of the head","authors":"Yujia Du, Kexiang Liu, Yuxin Ju, Meng Qiu, Haining Wang","doi":"10.1016/j.apergo.2025.104483","DOIUrl":"10.1016/j.apergo.2025.104483","url":null,"abstract":"<div><div>The aim of this study is to devise strategies for alleviating pressure discomfort associated with glasses-type wearables by examining pressure sensitivity at precise landmarks on the side of the head. A total of 197 healthy participants engaged in an experiment where pressure was applied using an automated force measuring system. Tactile threshold (TT), pressure discomfort threshold (PDT), maximum pressure tolerance (MPT), and pain pressure threshold (PPT) were gauged at 16 locations on the side of the head for each participant. The use of a series of grid-type templates facilitated the localization of landmarks based on individual head shapes and sizes. Notably, the area behind the ears exhibited higher pressure thresholds, while regions where temples sit horizontally were more sensitive to pressure. Gender differences were observed at specific locations, whereas age (<45 years old) and BMI did not exhibit any significant correlation with pressure thresholds. This research introduces an automated methodology for assessing pressure sensitivity through a high-density landmark map on the side of the head. The outcomes have significant implications for the ergonomic design of head-worn products, particularly for glasses-type wearables.</div></div>","PeriodicalId":55502,"journal":{"name":"Applied Ergonomics","volume":"125 ","pages":"Article 104483"},"PeriodicalIF":3.1,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reclined postures in vehicle seats: Preferred seatback contours and head support locations

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-19 DOI: 10.1016/j.apergo.2025.104479

Matthew P. Reed, Sheila M. Ebert, Tyler R. Vallier

引用次数: 0

Impact of work-related psychosocial versus biomechanical hazards on risk of musculoskeletal disorders: A systematic review and meta-analysis

IF 3.1 2区工程技术

Applied Ergonomics Pub Date : 2025-02-18 DOI: 10.1016/j.apergo.2025.104481

Jodi Oakman , Wendy A. Macdonald , Kate McCredie , Samantha Clune

引用次数: 0