+G&lt;SUB&gt;z&lt;/SUB&gt; Centrifugation and Mood

Biernacki, Marcin; Jankowski, Konrad S.; Kowalczuk, Krzysztof; Lewkowicz, Rafał; Dereń, Mirosław

doi:10.3357/asem.3126.2012

Cited by 12 publications

(7 citation statements)

References 10 publications

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“…More specifically, in the field of gravity/environmental studies, it has been advocated to introduce CFFF measurement into pilot’s individual assessment under conditions of incomplete physiological compensation ( Truszczynski et al, 2009 ). More recently, it was also demonstrated that the value of CFFF, measured before and after centrifugation, corresponded to the level of central nervous system (CNS) arousal caused by exposure to + Gz acceleration ( Biernacki et al, 2017 ), an important part of training for pilots, cosmonauts, and astronauts as it enhances tolerance for hypergravity ( Biernacki et al, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Critical Flicker Fusion Frequency: A Marker of Cerebral Arousal During Modified Gravitational Conditions Related to Parabolic Flights

et al. 2018

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In situ evaluation of human brain performance and arousal remains challenging during operational circumstances, hence the need for a rapid, reliable and reproducible tool. Here we hypothesized that the Critical flicker fusion frequency (CFFF) reflecting/requiring visual integration, visuo-motor skills and decision-taking process might be a powerful, fast and simple tool in modified gravity environments. Therefore 11 male healthy volunteers were assessed for higher cognitive functions with CFFF during parabolic flights. They were assessed at different time points: upon arrival to the base, 30 min after subcutaneous scopolamine administration, before parabolas, during hypergravity and microgravity at break time (between the 16th and the 17th parabola), on the return flight and on the ground after landing. First, a stable, and consistent measurement of CFFF could be obtained within 12 s. Second, under modified gravitational conditions, the perceptual ability of participants is significantly modified. Compared to the baseline, evolution is characterized by a significant increase of CFFF when in microgravity (0g: 106.9 ± 5.5%), and a significant decrease of CFFF while in hypergravity (2g: 94.5 ± 3.8%). Other time-points were not statistically different from the baseline value. Although the underlying mechanism is still debated, we suggest that the CFFF test is a global marker of cerebral arousal as the result of visuo-motor and decision taking testing based on a simple visual stimulus with an uncomplicated set up that could be used under various environmental conditions. The authors express an opinion that it would be advisable to introduce CFFF measurement during spaceflights as it allows individual longitudinal assessment of individual ability even under conditions of incomplete physiological compensation, as shown here during parabolic flights.

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Section: Introductionmentioning

confidence: 99%

Critical Flicker Fusion Frequency: A Marker of Cerebral Arousal During Modified Gravitational Conditions Related to Parabolic Flights

et al. 2018

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“…Jing et al (2011) found that participants experienced higher anxiety before centrifuge training, and their anxiety levels significantly decreased after the training. Biernacki found in a study that tense arousal acutely increased 2 min before the human centrifuge training and dropped down 2 min after the exposure (Biernacki, 2012). In this study too, a statistically significant decrease in anxiety was observed after practical aeromedical training.…”

Section: Discussionmentioning

confidence: 99%

Effect of aeromedical training on anxiety levels of ab initio pilots

Ata

Aytac

Ertemir

et al. 2022

AEAT

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Purpose Aeromedical training is meant to train aircrew in combating physiological problems that they might face in flight. Given the importance of the training, there are limited studies in the literature investigating the anxiety levels during aeromedical training along with training outcomes. This study aims to assess the untrained participants’ anxiety levels before and after aeromedical training, investigate the differences in anxiety levels across different physiological training devices and determine whether participants’ anxiety levels affect their G tolerances. Design/methodology/approach This study was carried out on 61 healthy male subjects (n = 61) who had applied for initial aeromedical training. Anxiety surveys and visual analog scales were administered before and after the practical aeromedical training. In addition, blood pressure and heart rate measurements were carried out. Findings Participants had significantly higher anxiety levels before human centrifuge training (pre-Glab) than before the altitude chamber training (pre-hypobaric). Participants who experienced G-induced loss of consciousness (G-LOC) had slightly more anxiety reported than the non-G-LOC group. There was a significant decrease between pre-Glab and post-Glab (after the human centrifuge training) and between pre-hypobaric and post-hypobaric (after the altitude chamber training) anxiety levels. The incidence of G-LOC was lower in participants having higher pre-G-Lab blood pressure. However, the difference in anxiety levels between the G-LOC group and the non-G-LOC group was not statistically significant. Research limitations/implications In this study, state anxiety inventory was not performed after human centrifuge training as centrifuge training lasted for around 5 min only, and it is not advisable to repeat state anxiety inventory in such short periods. Blood pressure was not measured after G-Lab training because human centrifuge training is hard training and has an impact on blood pressure. Hence, it would have been difficult to distinguish whether the blood pressure change was due to anxiety or hard physical activity. These limitations, especially for the G-Lab, caused us to evaluate state anxiety only with VAS. It would be worthwhile to repeat similar studies with objective measurements before and after the training. Practical implications This information suggests that instructors who train the applicants on aerospace medicine be ready for the possible consequences of anxiety. Originality/value There are only a few centers in the world that include all the physiological training devices (practical aeromedical training laboratories) together. To the best of authors’ knowledge, there are no studies in the literature investigating the differences in anxiety levels across various physiological training devices. The studies about the effect of anxiety levels on aeromedical training outcomes and anxiety levels before and after the training are scant.

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“…First, we analyzed the impact of exposure to simulator conditions on the level of perceived mood. In the case of the analysis taking into account the level of Tense Arousal, it turned out that the main effect of the platform type was not statistically significant, F(1,11) = 1.481, p = 0.249, and this was also the case Mood was assessed using the UWIST Mood Adjective Checklist (UMACL) [28][29][30], a 29-item self-report questionnaire which provides state measures of energetic arousal (EA), tense arousal (TA) and hedonic tone (HT).…”

Section: Resultsmentioning

confidence: 99%

Mood and simulator sickness after truck simulator exposure

Biernacki¹,

Dziuda²

2014

International Journal of Occupational Medicine and Environmental Health

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Objectives: Studies involving simulators are increasingly popular. We examined to what extent exposure to a variety of test conditions on the simulator affects the level of mood and severity of simulator sickness. In addition, we were interested in finding out to what degree the changes in mood are associated with the severity of the symptoms of simulator sickness. Material and Methods: Twelve men (aged M: 29.8, SD: 4.26) participated in the study, performing two 30-minute tasks in a driving simulator truck (fixed-base and mobile platform). For measuring mood, the UMACL questionnaire was used, and to assess the severity of the symptoms of simulator sickness, the SSQ questionnaire was used. Mood and the severity of simulator sickness symptoms were measured 3 times during the study (pretest, 2 min and 0.5 h after the test). Results: Symptoms of nausea and disorientation occurred after the tests on both simulators. In the case of the mobile platform, exacerbation of the symptoms associated with oculomotor disturbances was observed. These symptoms were particularly severe 2 min after completion of the test on the simulator, and they persisted for at least 0.5 h after the end of the test. The correlations between simulator sickness and mood explained from 35% to 65% of the variance of these variables. In particular, a strong association was observed between the oculomotor disturbances and a decrease in energetic arousal. This refers both to the effect level and the duration of these symptoms. Conclusions: Simulator sickness is a major problem in the use of simulators in both the research and the training of operators. In the conditions involving the mobile platform, not only was a higher severity of the symptoms of simulator sickness observed, but also a decrease in energetic arousal. Therefore, the implementation of the mobile platform can provide an additional source of conflict at the level of incoming stimuli and changes in mood may increase this effect. Thus, it seems important to consider the tasks performed on the simulator in the context of utility and the purpose for which we use them.

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+G<SUB>z</SUB> Centrifugation and Mood

Abstract: The centrifuge run with +Gz acceleration may evoke changes in arousal, but not in subjective enjoyment. Alterations in arousal levels triggered by centrifugation were positive, increasing energy and reducing tension.

Cited by 12 publications

References 10 publications

Critical Flicker Fusion Frequency: A Marker of Cerebral Arousal During Modified Gravitational Conditions Related to Parabolic Flights

Critical Flicker Fusion Frequency: A Marker of Cerebral Arousal During Modified Gravitational Conditions Related to Parabolic Flights

Effect of aeromedical training on anxiety levels of ab initio pilots

Mood and simulator sickness after truck simulator exposure

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