DABiG: Breath pattern classification using the hybrid deep learning with optimal feature selection

Technology and Health Care, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 17, 2025

A person's breathing pattern can be a reflection of their emotional and physical well-being because it shows the frequency, intensity, rhythm breathing. This research article presents comprehensive approach to breathe classification utilizing gyroscope accelerometer readings obtained from individuals using two distinct sensors. The study encompasses acquisition six diverse patterns, with focus on data pre-processing through Min-Max normalization. To select essential features normalized data, an innovative optimization algorithm, Adaptive Chimp Optimization (AdCO), is introduced. AdCO integrates adaptive weighting strategy into conventional enhancing convergence rates enabling global optimal feature selection. Furthermore, introduces application selected in breath hybrid deep learning mechanism, DABiG. DABiG leverages Bidirectional Gated Recurrent Unit (BiGRU), neural network architecture capable processing sequential bi-directionally. Spatial temporal attention mechanisms are incorporated enhance its ability relevant spatial regions time steps within data. assigns weights regions, while steps, improving extraction accuracy.

Language: Английский

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Stress, Resilience, and Organizational Climate

Aviation Psychology and Applied Human Factors, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract: Organizational climate, stress, resilience, and cortisol measures were investigated in pilots of the Brazilian Air Force (FAB). Studies indicate that these variables may be related to physical mental health, quality life, work professionals. A total 112 FAB participated this study. sociodemographic professional questionnaire, Resilience Scale, Lipp’s Inventory Stress Symptoms for Adults (ISSL), Climate Scale used. In addition, blood samples taken check pilots’ levels. According ISSL, 48 (42.86%) participants found stressed 64 (57.14%) not stressed. results showed better perception organizational lower level stress; greater resilience fewer stress symptoms. Most those who had higher values a good climate levels normal range. There was no significant correlation between Actions are suggested developing paying attention aimed at enhancing life as well flight safety.

Language: Английский

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Considerações quanto à necessidade de testes físicos específicos para tarefas operacionais: lições globais e realidade do Exército Brasileiro

Revista de Educação Física / Journal of Physical Education, Journal Year: 2025, Volume and Issue: 93(4), P. 287 - 295

Published: Feb. 19, 2025

Introdução: A eficiência de um exército depende, em grande parte, do preparo físico seus soldados. Face ao desenvolvimento tecnológico, o contexto militar contemporâneo tem se transformado radicalmente e, na atualidade, as operações modernas exigem uma preparação física cuja avaliação parece demandar testes que considerem atributos extrapolam aqueles incluídos nos tradicionais aptidão física. Objetivo: Examinar da forças terrestres e avaliar qualitativamente a necessidade físicos específicos Conclusão: Na missões operativas são cada vez mais diversificadas, exigindo desde longas marchas com cargas pesadas até infiltração ambientes urbanos hostis. Esses cenários comumente imprevisíveis requerendo combinação mentais como força, resistência agilidade, além de, principalmente, capacidade operar sob estresse mental extremos. revisar os dos exércitos modo garantir soldados estejam devidamente preparados para realidades campo batalha foi discutida.

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A theoretical model for evaluation of non-visual effects of lighting based on human performance: Comprehensive research ideas

Displays, Journal Year: 2025, Volume and Issue: unknown, P. 103038 - 103038

Published: March 1, 2025

Language: Английский

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Continuous Physiological Monitoring of the Combined Exposure to Hypoxia and High Cognitive Load in Military Personnel

Biology, Journal Year: 2023, Volume and Issue: 12(11), P. 1398 - 1398

Published: Nov. 3, 2023

Military aviators endure high cognitive loads and hypoxic environments during flight operations, impacting the autonomic nervous system (ANS). The synergistic effects of these exposures on ANS, however, are less clear. This study investigated simultaneous mild hypoxia load ANS in military personnel. employed a two-factor experimental design. Twenty-four healthy participants aged between 19 45 years were exposed to (14.0% O2), normoxia (21.0% hyperoxia (33.0% O2). During each epoch (n = 5), continuously performed one 15 min 10 series simulated, in-flight tasks separated by 1 rest. Exposure sequences (hypoxia–normoxia normoxia–hyperoxia) 60 break. Heart rate (HR), heart variability (HRV), O2 saturation (SpO2) measured via an armband monitor (Warfighter MonitorTM, Tiger Tech Solutions, Inc., Miami, FL, USA). Paired independent t-tests used evaluate differences HR, HRV, SpO2 within exposure sequences. Survival analyses assess timing magnitude responses. Sympathetic (SNS) activity was highest (HR: +6.9 bpm, p 0.002; rMSSD: −9.7 ms, 0.003; SDNN: −11.3 SpO2: −8.4%, < 0.0000) appeared slightly decline with non-significant increases HRV. normoxia, SNS heightened, albeit non-significantly, 1, higher HR (68.5 bpm vs. 73.0 0.06), lower HRV (rMSSD: 45.1 ms 38.7 0.09 52.5 0.08), (−0.7% 0.05). In epochs 2–4, trended towards baseline values. Significant between-group observed. Hypoxia elicited significantly greater HRs (+5.0, 0.03), rMSSD (−7.1, SDNN (−8.2, (−1.4%, 0.002) compared normoxia. Hyperoxia augment parasympathetic reactivation reflected addition relative induced response personnel load. significant differential responses varying levels observed highlight importance monitoring multiple physiological parameters operations.

Language: Английский

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Development and validation of an assessment index for quantifying cognitive task load in pilots under simulated flight conditions using heart rate variability and principal component analysis

Ergonomics, Journal Year: 2023, Volume and Issue: 67(4), P. 515 - 525

Published: June 27, 2023

To investigate whether high cognitive task load (CTL) for aircraft pilots can be identified by analysing heart-rate variability, electrocardiograms were recorded while cadet (n = 68) performed the plane tracking, anti-gravity pedalling, and reaction tasks during simulated flight missions. Data standard electrocardiogram parameters extracted from R–R-interval series. In research phase, low frequency power (LF), (HF), normalised HF, LF/HF differed significantly between CTL conditions (p < .05 all). A principal component analysis three components contributing 90.62% of cumulative variance. These incorporated into a composite index. Validation in separate group 139) under similar showed that index value increased with increasing .05). The variability used to objectively identify conditions.

Language: Английский

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Examining the Influence of Cognitive Load and Environmental Conditions on Autonomic Nervous System Response in Military Aircrew: A Hypoxia–Normoxia Study

Biology, Journal Year: 2024, Volume and Issue: 13(5), P. 343 - 343

Published: May 14, 2024

Executing flight operations demand that military personnel continuously perform tasks utilize low- and high-order cognitive functions. The autonomic nervous system (ANS) is crucial for regulating the supply of oxygen (O2) to brain, but it unclear how sustained loads different complexities may affect this regulation. Therefore, in current study, ANS responses low high hypoxic normoxic conditions were evaluated. present analysis used data from a previously conducted, two-factor experimental design. Healthy subjects (

Language: Английский

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Patent and Bibliometric Analysis of the Scientific Landscape of the Use of Pulse Oximeters and Their Prospects in the Field of Digital Medicine

Healthcare, Journal Year: 2023, Volume and Issue: 11(22), P. 3003 - 3003

Published: Nov. 20, 2023

This study conducted a comprehensive patent and bibliometric analysis to elucidate the evolving scientific landscape surrounding development application of pulse oximeters, including in field digital medicine. Utilizing data from Lens database for period 2000-2023, we identified United States, China, Republic Korea, Japan, Canada, Australia, Taiwan, Kingdom as predominant countries issuance oximeter technology. Our revealed consistent temporal trend both volume publications citations, underscoring growing importance oximeters digitally-enabled medical practice. Using VOSviewer software(version 1.6.18), discerned six primary research clusters: (1) measurement accuracy; (2) integration with Internet Things; (3) applicability across diverse pathologies; (4) telemedicine mobile applications; (5) artificial intelligence deep learning; (6) utilization anesthesiology, resuscitation, intensive care departments. The findings this indicate prospects leveraging technologies use oximetry various fields medicine, implications advancing understanding, diagnosis, prevention, treatment cardio-respiratory pathologies. allowed identification technical solutions reduce risks associated oximetry: improving precision validity, technically improved clinical diagnostic use, machine learning.

Language: Английский

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Cerebral oxygenation and perfusion kinetics monitoring of military aircrew at high G using novel fNIRS wearable system

Frontiers in Neuroergonomics, Journal Year: 2024, Volume and Issue: 5

Published: Feb. 23, 2024

Real-time physiological episode (PE) detection and management in aircrew operating high-performance aircraft (HPA) is crucial for the US Military. This paper addresses unique challenges posed by high acceleration (G-force) HPA explores potential of a novel wearable functional near-infrared spectroscopy (fNIRS) system, named NIRSense Aerie, to continuously monitor cerebral oxygenation during G-force exposure.

Language: Английский

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Tactile breathing guidance increases oxygen saturation but not alertness or hypoxia symptoms

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(6), P. e0302564 - e0302564

Published: June 12, 2024

We investigated the effect of tactile guided slow deep breathing compared with that spontaneous on blood oxygen saturation (SpO 2 ), alertness, and hypoxia symptoms during acute hypobaric hypoxia. also evaluated usability this guidance. Twelve male military pilots were exposed to a simulated altitude 4,572 m (15,000 ft) in repeated measures study while spontaneously breathing. Under both conditions, measurements performed at rest performance cognitive task. The Stanford Sleepiness Scale was used rate reported using list general symptoms. Usability questionnaire. Tactile guidance significantly increased ( p <.001) SpO – 88% (95% confidence interval (CI) [84%, 91%]) 85% CI [81%, 88%]) task 78% [75%, 81%]) [76%, 80%]) This increase had no level alertness number Pilots positive about intensity sensation vibration signal, but difficulty following pattern Pre-training may improve technique tasks.

Language: Английский

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