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Tytuł:
Perceived Mental Stress and Reactions in Heart Rate Variability—A Pilot Study Among Employees of an Electronics Company
Autorzy:
Orsila, R.
Virtanen, M.
Luukkaala, T.
Tarvainen, M.
Karjalainen, P.
Viik, J.
Savinainen, M.
Nygard, C. H.
Powiązania:
https://bibliotekanauki.pl/articles/90441.pdf
Data publikacji:
2008
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
work stress
wristop computer
heart rate variability
Opis:
In this study perceived mental stress during occupational work was compared to heart rate variability (HRV) using a traditional questionnaire and a novel wristop heart rate monitor with related software. The aim was to find HRV parameters useful for mental stress detection. We found the highest correlation between perceived mental stress with the differences between the values of triangular interpolation of rythm-to-rythm (RR) interval histogram (TINN) and the root mean square of differences of successive RR intervals (RMSSD) obtained in the morning and during the workday (r = –.73 and r = –.60, respectively). The analysis shows that as the RMSSD and TINN value differences increase from night to morning, the stress decreases.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2008, 14, 3; 275-283
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convenient Evaluation of Mental Stress With Pupil Diameter
Autorzy:
Yamanaka, K.
Kawakami, M.
Powiązania:
https://bibliotekanauki.pl/articles/90394.pdf
Data publikacji:
2009
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
pupil diameter
heart rate variability
mental stress
human-machine system
Opis:
This study proposes a convenient method of evaluating mental stress. The potential of monitoring changes in pupil diameter as a measure of human reliability while operating human–machine systems was examined experimentally. An experiment was carried out to clarify the relation between changes in pupil diameter and autonomic nervous activity by measuring an electrocardiogram and pupil diameter when 10 subjects completed a time-sensitive task. The electrocardiogram was measured using a multitelemeter system and pupil diameter was measured using an eye-mark recorder. Several relationships between changes in pupil diameter and autonomic nervous activity were revealed and indicated that measurement of pupil diameter was an effective indicator of autonomic nervous activity. Therefore, it may be possible to develop a monitoring system that measures changes in pupil diameter as an indicator of the mental state of workers operating human–machine systems.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2009, 15, 4; 447-450
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Offshore Fleet Workers and the Circadian Adaptation of Core Body Temperature, Blood Pressure and Heart Rate to 12-h Shifts: A Field Study
Autorzy:
Hansen, J. H.
Geving, I. H.
Reinertsen, R. E.
Powiązania:
https://bibliotekanauki.pl/articles/91164.pdf
Data publikacji:
2010
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
offshore fleet
circadian rhythms
blood pressure
heart rate
core temperature
Opis:
Objectives. The aim of this study was to investigate the circadian adaptation of tcr (core body temperature), BP (blood pressure), HR (heart rate) and subjective sleep quality after 7 days of working 12-h night shifts in offshore fleet workers. Methods. Night workers (N = 7) (18:00–6:00) and day workers (N = 7) (6:00–18:00) were recruited from a Norwegian offshore company operating in the North Sea. We measured tcr, BP and HR on days 1 and 7. Results. An increase of 0.6 oC (p = .03) was observed within the group of night workers from day 1 to day 7. Between the night and day workers there was a significant difference of 0.6 oC from day 1 to day 7 (p = .01). Sleep latency and sleep length also showed significant differences between the groups (p = .01 and p = .04). There was an interaction effect in tiredness during the shift (p = .02). Conclusion. The significant increase in tcr indicates an adaptation in the night workers to the new working schedule, and the extended working hours and sleep deprivation are hypothesized to be the main cause of the increased tcr. Light exposure, altered pattern of food availability and physical activity are likely to have contributed as well. Subjective sleep quality showed inconclusive results.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2010, 16, 4; 487-496
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heart Rate Variability and Motion Sickness During Forklift Simulator Driving
Autorzy:
Zużewicz, K.
Saulewicz, A.
Konarska, M.
Kaczorowski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/90661.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
motion sickness
heart rate variability
spectral analysis
forklift truck virtual simulator
Opis:
The goal of the study was to determine the effect of a 1-h hour long forklift truck virtual simulator driving on the mechanism of autonomic heart rate (HR) regulation in operators. The participants were divided into 2 subgroups: subjects with no definite inclination to motion sickness (group A) and subjects with a definite inclination to motion sickness (group B). Holter monitoring of electrocardiogram (ECG) signal was carried out in all subjects during the virtual simulator driving. For 12 consecutive epochs of ECG signal, HR variability analysis was conducted in time and frequency domains. In subjects with a definite inclination to motion sickness after ~30 min of the driving, changes in parameter values were found indicating an increase in sympathetic and parasympathetic activity with parasympathetic dominance.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 4; 403-410
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Występowanie czynników ryzyka choroby niedokrwiennej serca a praca zawodowa
Prevalence of coronary heart disease risk factors and occupation
Autorzy:
Bugajska, J.
Jędryka-Góral., A.
Konarska, M.
Powiązania:
https://bibliotekanauki.pl/articles/180030.pdf
Data publikacji:
2006
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
praca
czynniki ryzyka
choroba niedokrwienna serca
work
risk factors
coronary heart disease
Opis:
Obserwowany w ostatnich dwóch dziesięcioleciach wzrost występowania choroby niedokrwiennej serca w społeczeństwie spowodował zainteresowanie środowisk naukowych oraz ogółu społeczeństwa czynnikami ryzyka związanymi z tą chorobą. Szczególnie niepokojącym zjawiskiem jest obniżanie się wieku chorych, u których w przebiegu choroby niedokrwiennej serca występuje zawał serca. Zainteresowanie budzi również wpływ stylu życia oraz stresu wynikającego z wykonywanej pracy na występowanie czynników ryzyka choroby niedokrwiennej serca. W artykule przedstawiono klasyfikację czynników ryzyka choroby niedokrwiennej serca według AHA, metody oceny ryzyka sercowo-naczyniowego, oraz wyniki pracy dotyczącej występowania czynników ryzyka choroby niedokrwiennej serca w dwóch grupach zawodowych: wśród kierowników i pracowników fizycznych.
The increasing prevalence of coronary hart disease (CHD), which has been observed in the past two decades, has resulted in researchers' and the general public's interest in the risk factors CHD. The decreasing age of patients with CHD complicated by myocardial infarction is particularly worrying. The influence of life-style and occupational stress on the prevalence of CHD risk factors is focused on, too. This article presents a classification of CHD risk factors and methods for cardiovascular risk assessment as well as the results of our own study on the prevalence of CHD risk factors in two professional groups: managers and blue-collar workers.
Źródło:
Bezpieczeństwo Pracy : nauka i praktyka; 2006, 4; 14-17
0137-7043
Pojawia się w:
Bezpieczeństwo Pracy : nauka i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heart Rate Variability in Exposure to High Altitude Hypoxia of Short Duration
Autorzy:
Zużewicz, K.
Biernat, B.
Kempa, G.
Kwarecki, K.
Powiązania:
https://bibliotekanauki.pl/articles/91083.pdf
Data publikacji:
1999
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
heart rate variability
hypoxic hypoxia
autonomic nervous system
zmienność rytmu serca
układ nerwowy
niedotlenienie
Opis:
The objective of the study is to attempt an evaluation of heart rate (HR) and heart rate variability (HRV) regulatory mechanisms in the presence of autonomous nervous system (ANS) components in transient exposure to high altitude hypoxia. During 24 hrs including a stay in hypobaria, the participants had their HR continuously recorded using the Holter method. The following parameters were calculated at rest and during the stay in a thermobarochamber: spectral power in low frequency bands (LF) 0.04-0.15 Hz and high frequency bands (HF) 0.15-0.5 Hz, and the sympathetic-parasympathetic balance index LF/HF. Under hypobaric conditions, a decrease in mean spectral power of R-R intervals was noted within both frequency ranges, compared with the study performed in normobaria. The observed differences were larger at daytime.
Źródło:
International Journal of Occupational Safety and Ergonomics; 1999, 5, 3; 337-346
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Circadian Rhythm of Heart Rate, Urinary Cortisol Excretion, and Sleep in Civil Air Traffic Controllers
Autorzy:
Zużewicz, K.
Kwarecki, K.
Waterhouse, J.
Powiązania:
https://bibliotekanauki.pl/articles/90437.pdf
Data publikacji:
2000
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
heart rate
cortisol
sleep disorders
circadian rhythm
shift work
tętno
zaburzenia snu
praca zmianowa
Opis:
The examination of Air Traffic Controllers (ATCs) from the Warsaw Airport (Poland) included 24-hr ECG monitoring. The participants were 10 civil ATCs, 9 males and 1 woman. The study was carried out on a group of 19 ATCs during their duty periods, 14 of them working 12-hr shifts and 5 performing 24-hr duties. The participants collected urine every 4 hrs, and cortisol concentration was determined. Further, the survey included the quality and duration of sleep, and subjective fatigue in the 62 participants. In ATCs, shift work modifies natural rhythms of the circulatory system and decreases the ability for intensified mental work at night. In consequence ATCs experience frequent sleep disorders.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2000, 6, 3; 383-392
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal Strain in Fire Fighters While Wearing Task-Fitted Versus EN 469:2005 Protective Clothing During a Prolonged Rescue Drill
Autorzy:
Ilmarinen, R.
Makinen, H.
Lindholm, H.
Punakallio, A.
Kervinen, H.
Powiązania:
https://bibliotekanauki.pl/articles/91214.pdf
Data publikacji:
2008
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
thermal strain
cardiovascular strain
heart rate variability
vagal recovery
firefighter
protective clothing
job-related rescue drill
Opis:
Fire fighters are normally overprotected during their working hours because of the tendency to keep the personal protection level sufficiently high in case of the worst possible scenarios. This study investigated the effects of task-fitted protective clothing on thermal strain in fire fighters as compared to EN 469:2005 protective clothing during a prolonged (2 1/2 hrs) job-related rescue drill under neutral and hot climates. The subjects were 23 healthy, physically fit professional male fire fighters aged 26–44 years. Measurements included cardiovascular and thermal responses and subjective assessments. Wearing task-fitted clothing during rescue tasks in a neutral climate considerably reduced total thermal and cardiovascular strain in prolonged rescue work. The fire fighters also perceived physical work as significantly harder on average, and reported more intense subjective discomfort while wearing EN 469:2005 as compared to task-fitted clothing.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2008, 14, 1; 7-18
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Local Cooling on Thermophysiological Response in Participants Wearing Dust-Free Garments
Autorzy:
Kwon, O. K.
Kwon, A. H.
Kato, M.
Hayashi, C.
Tokura, H.
Powiązania:
https://bibliotekanauki.pl/articles/90860.pdf
Data publikacji:
1998
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
dust-free garment
frozen gel strip
skin temperature
heart rate
clothing microclimate
odzież bezpyłowa
temperatura ciała
obciążenie cieplne
Opis:
This study was designed to find the effects of two kinds of dust-free garments with (A) and without (B) frozen gel strip (FGS), and half-naked clothing (brassiere and shorts; C) on thermophysiological parameters and on temperature and humidity within clothing. The heart rate, rectal, and skin temperatures as well as sweat rate and clothing microclimate were measured during 140 min in 9 healthy females. Inquiries were also made into the subjective rating of thermal, humidity, and comfort sensations. The main findings in our experiments are as follows: (a) Physiological parameters such as rectal and skin temperatures (chest and forehead), heart rate, and sweat rate were clearly lowest in garb C, intermediate in garb A, and highest in garb B throughout the experiment; (b) Temperature and humidity within clothing were lower in garb A than in garb B; (c) More than half of the 9 participants decreased thermal sensation by wearing garb A. These results suggest that the usage of FGS could improve the heat load in lightly working participants wearing dust-free garments.
Źródło:
International Journal of Occupational Safety and Ergonomics; 1998, 4, 1; 57-67
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved Temporal Resolution Heart Rate Variability Monitoring—Pilot Results of Non-Laboratory Experiments Targeting Future Assessment of Human–Computer Interaction
Autorzy:
Hercegfi, K.
Powiązania:
https://bibliotekanauki.pl/articles/89831.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
human-computer interaction (HCI)
software ergonomics
software usability testing and evaluation
empirical methods
heart rate variability (HRV)
skin conductance
Opis:
This paper outlines the INTERFACE software ergonomic evaluation methodology and presents new validation results. The INTERFACE methodology is based on a simultaneous assessment of heart rate variability, skin conductance, and other data. The results of using this methodology on-site, in a non-laboratory environment indicate that it is potentially capable of identifying quality attributes of elements of software with a temporal resolution of only a few seconds. This paper presents pilot results supporting this hypothesis, showing empirical evidence in spite of the definitely non-laboratory environment: they indicate that the method is robust enough for practical usability tests. Naturally, in the future these pilot results will have to be followed with further laboratory-based verification and refinement. This paper focuses only on some characteristics of this method, not on an actual analysis of human–computer interaction; however, its results can establish a future practical and objective event-related analysis of software use.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 2; 105-117
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Event-Related Assessment of Hypermedia-Based E-Learning Materials With an HRV-Based Method That Considers Individual Differences in Users
Autorzy:
Hercegfi, K.
Powiązania:
https://bibliotekanauki.pl/articles/90195.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
human-computer interaction (HCI)
software ergonomics
software usability testing and evaluation
empirical methods
heart rate variability (HRV)
e-learning
hypermedia
Opis:
This paper reports results of an assessment of e-learning materials with the INTERFACE software evaluation methodology. On the one hand, this method of analysis allows us to identify ergonomics problems; on the other, to decide to what extent those problems and their severity concern all users in general and to what extent they depend on the usersʼ type and characteristics. This is the first publication to apply the new marking, export, and statistical features of INTERFACE used in a quantitative analysis of heart rate variability (HRV) curves instead of earlier time-based statistics and qualitative methods. It presents correlations between event-related characteristics of human–computer interaction and the currently required mental effort showed with HRV. The paper also discusses correlations between variables and cognitive-style test scores which indicate the role of individual differences in ergonomics.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 2; 119-127
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison Between the Strain Indicator HRV of a Head-Based Virtual Retinal Display and LC-Head Mounted Displays for Augmented Reality
Autorzy:
Oehme, O.
Schmidt, L.
Luczak, H.
Powiązania:
https://bibliotekanauki.pl/articles/90667.pdf
Data publikacji:
2003
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
virtual retinal display
heart rate variability
workload
strain
augmented reality
stres
komputer
obciążenie pracą umysłową
zagrożenia zdrowia
praca przy komputerze
Opis:
Augmented Reality uses Head Mounted Displays (HMD) to overlay the real word with additional virtual information. Virtual Retinal Displays (VRD), a new display technology, no longer requires Liquid Crystal Displays (LCD). VRD technology addresses the retina directly with a single laser stream of pixels. There are no studies on the user’s informational strain in this new VRD technology. Various papers have shown that Heart Rate Variability (HRV) is a valid indicator for the user’s informational strain. An empirical test revealed no difference in the user’s HRV between VRD technology and LCD technology. Consequently, there seems to be a comparable user informational strain regarding the display types.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2003, 9, 4; 419-430
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Heart Rate Evaluation Approach to Determine Cost-Effectiveness an Ergonomics Intervention
Autorzy:
Bedny, G. Z.
Karwowski, W.
Seglin, M. H.
Powiązania:
https://bibliotekanauki.pl/articles/90952.pdf
Data publikacji:
2001
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
fatigue
break time allowances
heart rate evaluations
energy expenditure
wydatek energetyczny
serce
zmęczenie
czas pracy
rozkład czasu odpoczynku
warunki pracy
Opis:
This paper describes a hear-rate methodology to determine the cost-effectiveness of an ergonomics intervention to reduce workload and improve working conditions. This is a practical approach as opposed to the energy expenditure technique that is difficult to implement in natural settings. This was a laboratory study using a large excavator cabin with devices to simulate excavation operations. Mean heart rate was used to calculate the required rest time during a shift with or without air-conditioning. The criterion for evaluation was differences in required rest time during a shift under these 2 conditions. The simplicity and objectivity of this approach invites use to solve the problem of the economic evaluation of ergonomics interventions.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2001, 7, 2; 121-133
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Validation of Methods for Determination of Metabolic Rate in the Edholm Scale and ISO 8996
Autorzy:
Giedraityte, L.
Holmer, I.
Gavhed, D.
Powiązania:
https://bibliotekanauki.pl/articles/91003.pdf
Data publikacji:
2001
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
energy expenditure
heat production
light and moderate work
manual tasks
heart rate
wydatek energetyczny
fizjologia układu moczowo-płciowego
warunki pracy
metabolizm
Opis:
The aim of this study was to validate the Edholm scale (Edholm, 1966) and the ISO 8996 standard (International Organization for Standardization [ISO], 1990) by comparing the metabolic rates estimated for both methods with the actual measured metabolic rate (MMeas) in 6 manual material handling tasks simulated under laboratory conditions. The metabolic rate was calculated from oxygen consumption V˙ O2 (19 participants) according to Standard No. ISO 8996 (ISO, 1990). Additionally, the participants estimated perceived exertion using the Borg scale. The metabolic rates derived from the Edholm scale (MEdh) overestimated 5 of 6 activities by 34–50% (< =.05). The metabolic rates derived from ISO 8996 (MISO) overestimated all activities by 7–38% (< =.05).
Źródło:
International Journal of Occupational Safety and Ergonomics; 2001, 7, 2; 135-148
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Prescriptive Exercise Program for Health Maintenance
Autorzy:
Yamashita, A.
Kawakami, M.
Inagaki, Y.
Ohkubo, T.
Powiązania:
https://bibliotekanauki.pl/articles/89896.pdf
Data publikacji:
2001
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
health maintenance
prescriptive exercise program
aging society
heart rate
relative metabolic rate
myoelectric potential
starsi pracownicy
fizjologia
praca mięśni
wydolność
zdolność fizyczna
metabolizm
Opis:
The aim of this study was to design a prescriptive exercise program for people of various age and fitness basing on the popular in Japan Radio Physical Fitness Exercise, a program based on an experimental approach. The evaluation indices used in the experiment were heart rate (HR), oxygen consumption, and electrical activity of the rectus femoris, latissimus dorsi, and trapezius muscles, which measured during various motion elements of the program performed at various rate. The results of this study enable to calculate equations for predicting HR during exercise from relative metabolic rate (RMR). The data on HR, RMR, and myoelectric potential presented in this study may be a basis for designing individual exercise programs for elderly people.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2001, 7, 2; 195-209
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
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