Muscle fatigue tracking during dynamic elbow flexion-extension movements with a varying hand load
Appl Ergon. 2023 Dec 30;116:104217. doi: 10.1016/j.apergo.2023.104217. Online ahead of print.ABSTRACTMuscle fatigue monitoring, an important element in a fatigue risk management process, can help optimize work intensity and reduce risks for musculoskeletal injuries. An experiment was conducted to determine whether myoelectric manifestations of muscle fatigue can reflect the pace of fatigue development associated with varying load intensity. Twenty male participants performed elbow flexion-extension movements with alternating hand loads (2 kg vs. 1 kg) for 16 min. The pace of fatigue in the biceps brachii in response to loa...
Source: Applied Ergonomics - December 31, 2023 Category: Occupational Health Authors: Woojin Yoon Gwanseob Shin Source Type: research
Muscle fatigue tracking during dynamic elbow flexion-extension movements with a varying hand load
Appl Ergon. 2023 Dec 30;116:104217. doi: 10.1016/j.apergo.2023.104217. Online ahead of print.ABSTRACTMuscle fatigue monitoring, an important element in a fatigue risk management process, can help optimize work intensity and reduce risks for musculoskeletal injuries. An experiment was conducted to determine whether myoelectric manifestations of muscle fatigue can reflect the pace of fatigue development associated with varying load intensity. Twenty male participants performed elbow flexion-extension movements with alternating hand loads (2 kg vs. 1 kg) for 16 min. The pace of fatigue in the biceps brachii in response to loa...
Source: Applied Ergonomics - December 31, 2023 Category: Occupational Health Authors: Woojin Yoon Gwanseob Shin Source Type: research
The effects of umbrella handle shape and grip type on muscle activation and postural variability under windy conditions
This study investigated how different shapes of umbrella handles and grip types influence muscle activation and postural variability under windy conditions. Seventeen adult participants were enrolled in this study, and different handle shapes (cylindrical, ellipsoidal, and triangular prism-shaped), grip types (four- and five-finger grip), and wind strengths were tested. Activation of the forearm and upper arm muscles was recorded using surface electromyography. Postural variability and ratings of (1) perceived difficulty of use and (2) perceived grip-posture variability were measured. The results indicated that activation ...
Source: Applied Ergonomics - December 29, 2023 Category: Occupational Health Authors: Jeewon Choi Natsuki Maeda Ping Yeap Loh Source Type: research
Optical angle and visuospatial ability affect basic laparoscopic simulator task performance
In this study we investigate the influence of visuospatial ability on laparoscopic simulator performance under such non-zero optical angles. Novices were invited to participate in a laparoscopic training session. After completing a visuospatial ability assessment, they performed a simplified laparoscopic task on an in-house developed laparoscopic simulator under eight different optical angles ranging between 0° and 315° in steps of 45°. Data-analysis showed decreased performance under all non-zero optical angles for task duration (mean difference between 1506 and 5049 ms, standard error between 499 and 507, p < .05) ...
Source: Applied Ergonomics - December 29, 2023 Category: Occupational Health Authors: Bas Kengen Willem B Verwey Harry van Goor Jan-Maarten Luursema Source Type: research
The effects of Augmented Reality on operator Situation Awareness and Head-Down Time
This study contributes to the limited empirical data on the effects of AR on operator performance, demonstrating the potential value of AR for improving SA and facilitating increased head-up time during maritime navigation, which in turn could improve safety at sea.PMID:38154227 | DOI:10.1016/j.apergo.2023.104213 (Source: Applied Ergonomics)
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Koen Pieter Houweling Steven C Mallam Koen van de Merwe Kjetil Nordby Source Type: research
The feasibility of workload monitoring among law enforcement officers: A multi-methodological approach
This study examined the feasibility of workload monitoring to assess internal workload in law enforcement officers (LEO) using a multi-methodological approach. Fifty front-line LEO completed workload surveys on workdays for eight weeks. Retention and adherence were assessed across the survey period. LEO completed usability and likelihood to continue questionnaires, while departmental administrators (n = 8) received workload reports and completed utility and sustainability questionnaires. A subsample of LEO and administrators participated in semi-structured interviews, following consensual qualitative research design. LEO r...
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Hayden K Giuliani-Dewig Gena R Gerstner Johna K Register-Mihalik J Troy Blackburn Darin A Padua John A Staley Eric D Ryan Source Type: research
The effects of Augmented Reality on operator Situation Awareness and Head-Down Time
This study contributes to the limited empirical data on the effects of AR on operator performance, demonstrating the potential value of AR for improving SA and facilitating increased head-up time during maritime navigation, which in turn could improve safety at sea.PMID:38154227 | DOI:10.1016/j.apergo.2023.104213 (Source: Applied Ergonomics)
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Koen Pieter Houweling Steven C Mallam Koen van de Merwe Kjetil Nordby Source Type: research
The feasibility of workload monitoring among law enforcement officers: A multi-methodological approach
This study examined the feasibility of workload monitoring to assess internal workload in law enforcement officers (LEO) using a multi-methodological approach. Fifty front-line LEO completed workload surveys on workdays for eight weeks. Retention and adherence were assessed across the survey period. LEO completed usability and likelihood to continue questionnaires, while departmental administrators (n = 8) received workload reports and completed utility and sustainability questionnaires. A subsample of LEO and administrators participated in semi-structured interviews, following consensual qualitative research design. LEO r...
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Hayden K Giuliani-Dewig Gena R Gerstner Johna K Register-Mihalik J Troy Blackburn Darin A Padua John A Staley Eric D Ryan Source Type: research
The effects of Augmented Reality on operator Situation Awareness and Head-Down Time
This study contributes to the limited empirical data on the effects of AR on operator performance, demonstrating the potential value of AR for improving SA and facilitating increased head-up time during maritime navigation, which in turn could improve safety at sea.PMID:38154227 | DOI:10.1016/j.apergo.2023.104213 (Source: Applied Ergonomics)
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Koen Pieter Houweling Steven C Mallam Koen van de Merwe Kjetil Nordby Source Type: research
The feasibility of workload monitoring among law enforcement officers: A multi-methodological approach
This study examined the feasibility of workload monitoring to assess internal workload in law enforcement officers (LEO) using a multi-methodological approach. Fifty front-line LEO completed workload surveys on workdays for eight weeks. Retention and adherence were assessed across the survey period. LEO completed usability and likelihood to continue questionnaires, while departmental administrators (n = 8) received workload reports and completed utility and sustainability questionnaires. A subsample of LEO and administrators participated in semi-structured interviews, following consensual qualitative research design. LEO r...
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Hayden K Giuliani-Dewig Gena R Gerstner Johna K Register-Mihalik J Troy Blackburn Darin A Padua John A Staley Eric D Ryan Source Type: research
The effects of Augmented Reality on operator Situation Awareness and Head-Down Time
This study contributes to the limited empirical data on the effects of AR on operator performance, demonstrating the potential value of AR for improving SA and facilitating increased head-up time during maritime navigation, which in turn could improve safety at sea.PMID:38154227 | DOI:10.1016/j.apergo.2023.104213 (Source: Applied Ergonomics)
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Koen Pieter Houweling Steven C Mallam Koen van de Merwe Kjetil Nordby Source Type: research
The feasibility of workload monitoring among law enforcement officers: A multi-methodological approach
This study examined the feasibility of workload monitoring to assess internal workload in law enforcement officers (LEO) using a multi-methodological approach. Fifty front-line LEO completed workload surveys on workdays for eight weeks. Retention and adherence were assessed across the survey period. LEO completed usability and likelihood to continue questionnaires, while departmental administrators (n = 8) received workload reports and completed utility and sustainability questionnaires. A subsample of LEO and administrators participated in semi-structured interviews, following consensual qualitative research design. LEO r...
Source: Applied Ergonomics - December 28, 2023 Category: Occupational Health Authors: Hayden K Giuliani-Dewig Gena R Gerstner Johna K Register-Mihalik J Troy Blackburn Darin A Padua John A Staley Eric D Ryan Source Type: research
"Braking bad": The influence of haptic feedback and tram driver experience on emergency braking performance
The objective was to understand how a master control system, enhanced with additional haptic feedback, could improve tram driver braking performance and perceptions in safety-critical scenarios. Interview results indicate that the use of the emergency brake is considered the final or ultimate choice by drivers, and their driving experience is a moderating factor in limiting its application. Combined with the experimental results, this paper highlights how implementing haptic feedback within a master controller can reduce the performance disparity between novice and experienced tram drivers.PMID:38141524 | DOI:10.1016/j.ape...
Source: Applied Ergonomics - December 23, 2023 Category: Occupational Health Authors: Tiziana C Callari Louise Moody Michael Mortimer Hans Stefan Ben Horan Stewart Birrell Source Type: research
"Braking bad": The influence of haptic feedback and tram driver experience on emergency braking performance
The objective was to understand how a master control system, enhanced with additional haptic feedback, could improve tram driver braking performance and perceptions in safety-critical scenarios. Interview results indicate that the use of the emergency brake is considered the final or ultimate choice by drivers, and their driving experience is a moderating factor in limiting its application. Combined with the experimental results, this paper highlights how implementing haptic feedback within a master controller can reduce the performance disparity between novice and experienced tram drivers.PMID:38141524 | DOI:10.1016/j.ape...
Source: Applied Ergonomics - December 23, 2023 Category: Occupational Health Authors: Tiziana C Callari Louise Moody Michael Mortimer Hans Stefan Ben Horan Stewart Birrell Source Type: research
"Braking bad": The influence of haptic feedback and tram driver experience on emergency braking performance
The objective was to understand how a master control system, enhanced with additional haptic feedback, could improve tram driver braking performance and perceptions in safety-critical scenarios. Interview results indicate that the use of the emergency brake is considered the final or ultimate choice by drivers, and their driving experience is a moderating factor in limiting its application. Combined with the experimental results, this paper highlights how implementing haptic feedback within a master controller can reduce the performance disparity between novice and experienced tram drivers.PMID:38141524 | DOI:10.1016/j.ape...
Source: Applied Ergonomics - December 23, 2023 Category: Occupational Health Authors: Tiziana C Callari Louise Moody Michael Mortimer Hans Stefan Ben Horan Stewart Birrell Source Type: research
