A Preliminary Investigation of the Effect of Protective Clothing Weight, Bulk and Stiffness on Combat Mobility Course Performance

Bossi, Linda; Jones, Monica; Kelly, Alison; Tack, David W.

doi:10.1177/1541931213601161

Cited by 9 publications

(5 citation statements)

References 11 publications

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“…The military uses a functional task assessment, the Load Effects Assessment Program (LEAP), which includes evaluating decrements in sequential timed mobility tasks to quantify the performance differences due to soldier equipment (Bossi et al, 2016; Jones et al, 2014; Mitchell et al, 2016). Recent efforts examine LEAP performance using IMUs (Vitali et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Static, Dynamic, and Cognitive Fit of Exosystems for the Human Operator

et al. 2020

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Objective To define static, dynamic, and cognitive fit and their interactions as they pertain to exosystems and to document open research needs in using these fit characteristics to inform exosystem design. Background Initial exosystem sizing and fit evaluations are currently based on scalar anthropometric dimensions and subjective assessments. As fit depends on ongoing interactions related to task setting and user, attempts to tailor equipment have limitations when optimizing for this limited fit definition. Method A targeted literature review was conducted to inform a conceptual framework defining three characteristics of exosystem fit: static, dynamic, and cognitive. Details are provided on the importance of differentiating fit characteristics for developing exosystems. Results Static fit considers alignment between human and equipment and requires understanding anthropometric characteristics of target users and geometric equipment features. Dynamic fit assesses how the human and equipment move and interact with each other, with a focus on the relative alignment between the two systems. Cognitive fit considers the stages of human-information processing, including somatosensation, executive function, and motor selection. Human cognitive capabilities should remain available to process task- and stimulus-related information in the presence of an exosystem. Dynamic and cognitive fit are operationalized in a task-specific manner, while static fit can be considered for predefined postures. Conclusion A deeper understanding of how an exosystem fits an individual is needed to ensure good human–system performance. Development of methods for evaluating different fit characteristics is necessary. Application Methods are presented to inform exosystem evaluation across physical and cognitive characteristics.

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Section: Resultsmentioning

confidence: 99%

Static, Dynamic, and Cognitive Fit of Exosystems for the Human Operator

et al. 2020

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“…Nevertheless, the thicknesses of 9.0 and 10.0 mm were not recommended to use for the further design activity of body armour via the FDM technique. Although these thicknesses provided higher stab resistance than the thickness of 8.0 mm, but the concern was to avoid more weight added to the designs of body armour [21,22]. Therefore, the 8.0 mm thickness was used as the minimum requirement in generating the designs of imbricate armour features.…”

Section: Resultsmentioning

confidence: 99%

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Maidin¹,

Chong²,

Heing³

et al. 2019

Textile Manufacturing Processes

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Five designs of imbricate scale armour features for stab-resistant application were printed via fused deposition modelling process. Stab test on these designs against the HOSDB KR1-E1 stab-resistant body armour standard with impact energy of 24 Joules was conducted. The stab test was conducted on a number of samples measured thicknesses ranging from 4.0 to 10.0 mm by using Instron CEAST 9340 Drop Impact Tower to determine a minimum thickness that resulted in a knife penetration through the underside of sample which does not exceed the maximum penetration permissibility of 7.0 mm. Materials used for the samples were ABS-M30 and PC-ABS. Finally, one of the designs which offered the highest knife penetration resistance was selected. The results show that PC-ABS samples provide less shattering and lower overall knife penetration depth in comparison with ABS-M30. PC-ABS stab test demonstrated a minimum thickness of 8.0 mm, which was the most adequate to be used in the development of FDM manufactured body armour design features. Lastly, the design feature of D5 has shown to exhibit the highest resistance to the knife penetration due to the penetration depth of 3.02 mm, which was the lowest compared to other design features.

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“…Dynamic fit is important to assess in the context of occupation specific tasks, as the aim of the equipment item should be to minimize restrictions on mobility, and associated fatigue, metabolic cost, performance, and injury detriments. Commonly, dynamic fit is assessed through the use of ROM and functional task performance, including occupationally relevant tasks [13,18,[110][111][112] with standardised ROM tasks and procedures having been developed for some equipment items, such as body armour [15]. These tasks typically compare encumbered and non-encumbered conditions to establish a baseline for performance measures.…”

Section: Dynamic Fit Evaluationmentioning

confidence: 99%

Does the fit of personal protective equipment affect functional performance? A systematic review across occupational domains

et al. 2022

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Objective To explore the effect of personal protective equipment (PPE) fit on functional performance across a range of occupational domains. Background PPE introduces an ergonomic, human systems integration, and mass burden to the wearer, and these factors are thought to be amplified if PPE is ill-fitting. However, few studies have considered the role of fit (static, dynamic, and cognitive) when evaluating PPE-related performance detriments in occupational settings. Method A systematic literature review was conducted to identify relevant studies, which were then critically appraised based on methodological quality and collated to compare key findings and present evidence-based recommendations for future research directions across a range of occupational domains. Results 16 published studies met the inclusion criteria, 88% of which found that the fit of PPE had a statistically significant effect on occupational performance. Poorly sized PPE resulted in slower or increased reaction time; decreased range of motion or mobility; decreased endurance or tolerance; decreased pulmonary function; and altered muscle activation. Limited research met the inclusion criteria and those that did had risks of bias in methodology quality. Conclusion Future research evaluating the effect of PPE on performance in occupational settings should aim to recruit a more representative population; consider sex as a covariate; quantify and evaluate PPE fit and performance when integrated with all relevant equipment items; include outcome measures related to all three categories of fit (static, dynamic, cognitive); and assess performance of operationally relevant tasks.

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A Preliminary Investigation of the Effect of Protective Clothing Weight, Bulk and Stiffness on Combat Mobility Course Performance

Cited by 9 publications

References 11 publications

Static, Dynamic, and Cognitive Fit of Exosystems for the Human Operator

Static, Dynamic, and Cognitive Fit of Exosystems for the Human Operator

Stab Resistant Analysis of Body Armour Design Features Manufactured via Fused Deposition Modelling Process

Does the fit of personal protective equipment affect functional performance? A systematic review across occupational domains

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