scholarly journals Portable Biosensors for Psychophysiological Stress Monitoring of a Helicopter Crew

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6849
Author(s):  
Marta Vicente-Rodríguez ◽  
Damián Iglesias Gallego ◽  
Juan Pedro Fuentes-García ◽  
Vicente Javier Clemente-Suárez
Keyword(s):  
Heart Rate ◽  
Stress Response ◽  
Oxygen Saturation ◽  
Subjective Perception ◽  
Maximal Heart Rate ◽  
Autonomic Modulation ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Psychophysiological Stress ◽  
Low Altitude

This study aims to analyze the psychophysiological stress response of a helicopter crew using portable biosensors, and to analyze the psychophysiological stress response differences of experienced and non-experienced crew members. We analyzed 27 participants (33.89 ± 5.93 years) divided into two different flight maneuvers: a crane rescue maneuver: 15 participants (three control and 12 military) and a low-altitude maneuver: 12 participants (five control and seven military). Anxiety, rating of perceived exertion, subjective perception of stress, heart rate, blood oxygen saturation, skin temperature, blood lactate, cortical arousal, autonomic modulation, leg and hand strength, leg flexibility, spirometry, urine, and short-term memory were analyzed before and after both helicopter flight maneuvers. The maneuvers produced a significant increase in stress and effort perception, state of anxiety, and sympathetic modulation, as well as a significant decrease in heart rate, blood oxygen saturation, leg and inspiratory muscle strength, and urine proteins. The use of biosensors showed how a crane rescue and low-altitude helicopter maneuvers produced an anticipatory anxiety response, showing an increased sympathetic autonomic modulation prior to the maneuvers, which was maintained during the maneuvers in both experienced and non-experienced participants. The crane rescue maneuver produced a higher maximal heart rate and decreased pulmonary capacity and strength than the low-altitude maneuver. The psychophysiological stress response was higher in the experienced than in non-experienced participants, but both presented an anticipatory stress response before the maneuver.

scholarly journals SIMULATION OF THE RELATIONSHIP BETWEEN EXERCISE AND CARDIOPULMONARY FUNCTION AT HIGH ALTITUDE

2021 ◽  
Vol 27 (5) ◽  
pp. 509-513
Author(s):  
Rui Li
Keyword(s):  
Heart Rate ◽  
Arterial Pressure ◽  
Oxygen Saturation ◽  
High Altitude ◽  
Lower Limb ◽  
Pulmonary Circulation ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Cardiopulmonary Function ◽  
The Relationship

ABSTRACT Introduction: Due to various uncertain and unexpected factors in life such as diseases, natural disasters, traffic accidents, and congenital disabilities, the number and proportion of lower limb amputations are still rising for many reasons, so the research on lower limb prostheses is particularly important. Objective: This work aimed to study the relationship between altitude exercise and cardiopulmonary function. Methods: A model of abnormal changes in cardiopulmonary function was established, and then 40 plateau exercisers were selected, all of whom arrived in Tibet in March 2017. The relationship between pulmonary circulation volume and internal pressure in the chest was observed and compared. The relationship between cardiopulmonary sensory reflex and exercise (high altitude) breathing and heart rate was analyzed. A comparison of the cardiopulmonary function of subjects of different genders was implemented. Moreover, the influence of different altitudes on the subjects’ cardiopulmonary function and the subjects’ cardiopulmonary function changes before departure and during the first, second, and third week after departure were observed and compared. Results: I. As the pressure in the thoracic cavity increased, the subjects’ pulmonary circulation blood volume gradually decreased, and the decrease was most obvious in the stage of thoracic pressure −50 to 0. II. As the cardiorespiratory reflex coefficient increased, the subjects’ breathing and heart rate compensatory acceleration appeared. III. Tracking and monitoring of the subjects’ cardiopulmonary indicators revealed that with the increase in altitude, the subjects’ average arterial pressure, respiratory frequency, and heart rate all showed an upward trend, while the blood oxygen saturation value showed a downward trend. IV. No matter how high the altitude was, the average arterial pressure, respiratory rate, and heart rate monitored of the subjects under exercise were significantly superior to the indicator values under resting state. In contrast, the blood oxygen saturation value showed the opposite trend. V. The subjects’ average arterial pressure, respiration, and heart rate in the first week were higher than other periods, but the blood oxygen saturation was relatively lower. In the second and third weeks, the changes in cardiopulmonary function were relatively smooth (all P<0.05). VI. The changes in the index of the cardiopulmonary function of subjects of different genders were small (p>0.05). Conclusion: Through modeling, the results of the plateau environment on the cardiopulmonary function of the body were made clearer, and these research data provided theoretical references for the training of the sports field in the plateau area. Level of evidence II; Therapeutic studies - investigation of treatment results.

Effect of 30% Oxygen Administration on Verbal Cognitive Performance, Blood Oxygen Saturation and Heart Rate

2006 ◽  
Vol 31 (4) ◽  
pp. 281-293 ◽  
Author(s):  
Soon-Cheol Chung ◽  
Sunao Iwaki ◽  
Gye-Rae Tack ◽  
Jeong-Han Yi ◽  
Ji-Hye You ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Saturation ◽  
Cognitive Performance ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Oxygen Administration

Adaptation to altitude as a vehicle for experiential learning of physiology by university undergraduates

2007 ◽  
Vol 31 (3) ◽  
pp. 270-278 ◽  
Author(s):  
David S. Weigle ◽  
Amelia Buben ◽  
Caitlin C. Burke ◽  
Nels D. Carroll ◽  
Brett M. Cook ◽  
...  
Keyword(s):  
Heart Rate ◽  
Cognitive Function ◽  
Experiential Learning ◽  
Oxygen Saturation ◽  
Learning Activity ◽  
Control Group ◽  
Research Station ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
University Undergraduates

In this article, an experiential learning activity is described in which 19 university undergraduates made experimental observations on each other to explore physiological adaptations to high altitude. Following 2 wk of didactic sessions and baseline data collection at sea level, the group ascended to a research station at 12,500-ft elevation. Here, teams of three to four students measured the maximal rate of oxygen uptake, cognitive function, hand and foot volume changes, reticulocyte count and hematocrit, urinary pH and 24-h urine volume, athletic performance, and nocturnal blood oxygen saturation. Their data allowed the students to quantify the effect of altitude on the oxygen cascade and to demonstrate the following altitude-related changes: 1) impaired performance on selected cognitive function tests, 2) mild peripheral edema, 3) rapid reticulocytosis, 4) urinary alkalinization and diuresis, 5) impaired aerobic but not anaerobic exercise performance, 6) inverse relationship between blood oxygen saturation and resting heart rate, and 7) regular periodic nocturnal oxygen desaturation events accompanied by heart rate accelerations. The students learned and applied basic statistical techniques to analyze their data, and each team summarized its results in the format of a scientific paper. The students were uniformly enthusiastic about the use of self-directed experimentation to explore the physiology of altitude adaptation and felt that they learned more from this course format than a control group of students felt that they learned from a physiology course taught by the same instructor in the standard classroom/laboratory format.

scholarly journals Effect of Psychophysiological Stress and Socio-Emotional Competencies on the Clinical Performance of Nursing Students during a Simulation Practice

2021 ◽  
Vol 18 (10) ◽  
pp. 5448
Author(s):  
Elba Mauriz ◽  
Sandra Caloca-Amber ◽  
Lucía Córdoba-Murga ◽  
Ana María Vázquez-Casares
Keyword(s):  
Heart Rate ◽  
Nursing Students ◽  
Self Efficacy ◽  
Clinical Performance ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Emotional Competencies ◽  
Emotional Skills ◽  
Psychophysiological Stress ◽  
Post Test

Psychophysiological stress can affect the cognitive response and effective learning of students during medical simulation practices. This study aimed to explore the effect of psychophysiological stress and socio-emotional competencies on clinical performance during a simulation experience. A pre-test/post-test design was used to assess physiological (blood pressure, heart rate and blood oxygen saturation) and psychological parameters (stress and anxiety) as well as socio-emotional skills (cognitive load, self-efficacy and motivation) in nursing students (n = 40) before and after the simulation of a cardiopulmonary resuscitation practice. Physiological responses showed statistically significant differences between pre-test and post-test conditions for blood pressure and heart rate (p < 0.0001). Moderate and significant correlations were also observed when comparing self-efficacy with stress (r = −0.445, p = 0.004), anxiety (r = −0.467, p = 0.002) and motivation (r = −0.406, p = 0.009) measures. Similarly, cognitive-load dimensions were significantly associated with either physiological (r = −0.335, p = 0.034) or psychological (r = −0.448, p = 0.004) indicators. The analysis of multiple regression models revealed a relationship between the effectiveness of the simulated experience, post-test blood oxygen saturation, heart rate, workload and self-efficacy (R2 = 0.490; F (3, 39) = 8.305; p < 0.0001; d = 1.663). Therefore, the evaluation of psychophysiological parameters and socio-emotional skills seems to provide a promising framework for predicting the quality of simulated clinical practices.

scholarly journals The Effect of Surgical Mask Use in Anaerobic Running Performance

2021 ◽  
Vol 11 (14) ◽  
pp. 6555
Author(s):  
José Francisco Tornero-Aguilera ◽  
Alejandro Rubio-Zarapuz ◽  
Alvaro Bustamante-Sánchez ◽  
Vicente Javier Clemente-Suárez
Keyword(s):  
Oxygen Saturation ◽  
Blood Lactate ◽  
Perceived Stress ◽  
Perceived Exertion ◽  
Physical Activities ◽  
Autonomic Modulation ◽  
Blood Oxygen ◽  
Blood Oxygen Saturation ◽  
Running Performance ◽  
Surgical Masks

COVID-19 restrictions stipulate the mandatory use of surgical masks during outdoor and indoor physical activities. The impact of this on athletic performance and especially on anaerobic physical activities is poorly known. The aim of the present research was to analyze the effect of surgical mask use on the anaerobic running performance of athletes. Modifications in running time, blood lactate, blood glucose, blood oxygen saturation, subjective perceived stress, rating of perceived exertion, and heart rate variability were measured in 50 m and 400 m maximal running tests with and without the use of surgical masks in 72 athletes. The use of a surgical mask increased blood lactate concentration, sympathetic autonomic modulation, perceived exertion, perceived stress, and decreased blood oxygen saturation in 50 and 400 m running tests. Thus, the higher levels of blood lactate and lower blood oxygen saturation require adaptation of the athlete’s rest and recovery periods to the acute workload. The higher level of sympathetic activation makes the acute and chronic control of autonomic modulation essential for an efficient training periodization. Finally, the use of acid buffers such as bicarbonate or sodium citrate would be a recommended ergogenic strategy.

scholarly journals CHANGES IN HEART RATE AND PERIPHERAL SATURATION IN YOUNG ORIENTEERING ATHLETES WHEN PASSING SPORT DISTANCES OF DIFFERENT DIFFICULTY

2021 ◽  
Vol 6(72) (4) ◽  
pp. 3-12
Author(s):  
E. A. Biryukova ◽  
N. S. Yarmolyuk ◽  
L. E. Abdurashitova ◽  
E. S. Tkach ◽  
E. V. Yukalo ◽  
...  
Keyword(s):  
Heart Rate ◽  
Oxygen Saturation ◽  
Functional State ◽  
Energy Supply ◽  
Saturation Index ◽  
Blood Oxygen ◽  
Young Athletes ◽  
Blood Oxygen Saturation ◽  
Field Methods ◽  
Functional Changes

Nowadays, youth sport, on a par with professional sport, imposes stringent requirements for physical and emotional preparation of athletes [1]. Orienteering is no exception, where in the system of preparation of young athletes an important task is to control the formation of adequate adaptive reactions to intensive muscular activity [2]. Running orienteering is characterized by performing maximum and even excessive physical loads during different time intervals, which is associated with significant mobilization of energy systems of young athletes’ organism – cardiovascular, respiratory, humoral and metabolic, etc. [2, 3]. Due to the fact that for ethical reasons invasive methods (blood lactate control) of functional diagnostics, as well as some stress tests (load testing «to failure») are often not applicable to school-age children, including orienteering athletes, the search for simple noninvasive, applicable in the field methods of functional state control during and after passing sports distances of different complexity in order to monitor adequacy of training process and prognosis is actual. We think that assessment of blood oxygen saturation degree (SpO2 %), which, according to literature data, reflects real efficiency of cardiorespiratory system operation, is one of such methods along with heart rate (HR) recording [4–9]. SpO2 % determination by direct oximetry has been introduced into clinical practice for quite a long time. However, recently it has become possible to monitor blood oxygen saturation out of clinical control due to the development of portable pulse oximeters for indirect transdermal determination of SpO2 %. However, to date in the scientific literature there are virtually no studies of functional changes in the degree of blood saturation, as well as HR, in young orienteering athletes. Therefore, the aim of our study was to assess the changes in heart rate and peripheral saturation in young orienteering athletes when passing sport distances of different difficulty. After athletic distance the HR values in young athletes increased on average by 130–170 % (boys) and 140–150 % (girls) relative to the values recorded at rest in these subjects. The maximum increase in heart rate was recorded in both groups of test athletes after cross sprint distances – by 177.4 % (p<0.05) and 147.05 % (p<0.05)) cross-long – by 251.6 % (p<0.05) and 141.2 % (p<0.05) for boys and girls respectively, indicating the greatest changes in functional state, particularly tension of energy supply mechanisms during these distances. After cross-sprint and cross-long distances the reliable decrease of peripheral blood saturation ≈ on 1,8 % (p<0,05) at boys and ≈ on 2,6 % (p<0,05) at girls has been registered in young orienteering athletes. The data obtained by us testify to the fact that the passage of distances cross-sprint and cross-long caused the greatest change in blood saturation and tension of mechanisms of their energy supply in young orienteering athletes associated with the development of hypoxic states, caused by lactate acidosis. Significant differences in the dynamics of changes in the studied parameters between the groups of boys and girls 13–14 were recorded only for the saturation index: on the distances cross-sprint and cross-long SpO2 values for both distances for girls were ≈1.03 % (p<0,05) lower than for boys. This indicates that young men have an advantage in adapting to physical loads associated with cross-country sport distances compared to girls of the same age.

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