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Wyświetlanie 1-5 z 5
Tytuł:
Observation Procedures Characterizing Occupational Physical Activities: Critical Review
Autorzy:
Denis, D.
Lortie, M.
Rossignol, M.
Powiązania:
https://bibliotekanauki.pl/articles/89974.pdf
Data publikacji:
2000
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
physical work
observation procedures
reliability
validity
observer training
obserwacja
praca fizyczna
warunki pracy
Opis:
The first objective of this paper is to compare the observation procedures proposed to characterize physical work. The second objective is to examine the following 3 methodological issues: reliability, observer training, and internal validity. Seventy-two papers were reviewed, 38 of which proposed a new or modified observation grid. The observation variables identified were broken down into 7 categories as follows: posture, exertion, load handled, work environment, use of feet, use of hands, and activities or tasks performed. The review revealed the variability of existing procedures. The examination of methodological issues showed that observation data can be reliable and can present an adequate internal validity. However, little information about the conditions necessary to achieve good reliability was available.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2000, 6, 4; 463-491
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Carbon Dioxide Inhalation on Psychomotor and Mental Performance During Exercise and Recovery
Autorzy:
Vercruyssen, M.
Kamon, E.
Hancock, P. A.
Powiązania:
https://bibliotekanauki.pl/articles/91095.pdf
Data publikacji:
2007
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
carbon dioxide
behavioral toxicology
SCBA
cognition motor performance
psychomotor performance
praca umysłowa
dwutlenek węgla
wydolność
praca fizyczna
wdychanie
Opis:
On separate days, 6 highly trained participants performed psychomotor tests while breathing for 60 min 3 carbon dioxide (CO2) mixtures (room air, 3% CO2, or 4% CO2) prior to, between, and following two 15- min treadmill exercise bouts (70% VO2max). Each individual was extensively practiced (at least 4 days) before testing began, and both gas conditions and order of tasks were counterbalanced. Results showed physiological reactions and work-related psychomotor effects, but no effects of gas concentration on addition, multiplication, grammatical reasoning, or dynamic postural balance. These findings help define behavioral toxicity levels and support a re-evaluation of existing standards for the maximum allowable concentrations (also emergency and continuous exposure guidance levels) of CO2. This research explored the selection of psychometric instruments of sufficient sensitivity and reliability to detect subtle changes in performance caused by exposure to low levels of environmental stress, in this case differential levels of CO2 in the inspired air.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2007, 13, 1; 15-27
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Box Handling in the Loading and Unloading of Vans
Autorzy:
Lortie, M.
Baril-Gingras, G.
Powiązania:
https://bibliotekanauki.pl/articles/90133.pdf
Data publikacji:
1998
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
handling
box
handling techniques
field study
work analysis
obsługa
praca fizyczna
chwyt
wysiłek fizyczny
załadunek
rozładunek
Opis:
The handling of 2,306 boxes being loaded or unloaded from vans onto or from 4-wheeled trolleys by 31 handlers in a warehouse were characterized. Handling was videotaped and characterized through an analysis grid completed by three trained observers. The following execution parameters were observed: nature of the exertion applied by the upper limbs, plane and direction of the exertion, resulting displacement of the box, grip, use of the lower limbs and the back. Results show that execution parameters used by handlers vary considerably from those usually recommended or studied. For example, symmetric grips were rarely used (4%). The grip was modified during the handling of half the boxes. Significant knee flexion was rarely observed (3% of exertions). Each box was moved by applying an average o f . 3.5 different exertions. Exertions were mostly applied in a plane parallel to the shoulders; they were rarely executed in a strict sagittal plane (11%). The implication of these observations are discussed.
Źródło:
International Journal of Occupational Safety and Ergonomics; 1998, 4, 1; 3-18
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Background Music on Maximum Acceptable Weight of Manual Lifting Tasks
Autorzy:
Yu, R.
Powiązania:
https://bibliotekanauki.pl/articles/90671.pdf
Data publikacji:
2014
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
background music
manual materials handling
psychophysics
maximum acceptable weight of lift
tempo
tempo muzyki
muzyka
praca fizyczna
wysiłek fizyczny
Opis:
This study used the psychophysical approach to investigate the impact of tempo and volume of background music on the maximum acceptable weight of lift (MAWL), heart rate (HR) and rating of perceived exertion (RPE) of participants engaged in lifting. Ten male college students participated in this study. They lifted a box from the floor, walked 1–2 steps as required, placed the box on a table and walked back twice per minute. The results showed that the tempo of music had a significant effect on both MAWL and HR. Fast tempo background music resulted in higher MAWL and HR values than those resulting from slow tempo music. The effects of both the tempo and volume on the RPE were insignificant. The results of this study suggest fast tempo background music may be used in manual materials handling tasks to increase performance without increasing perceived exertion because of its ergogenic effect on human psychology and physiology.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2014, 20, 3; 437-445
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
    Wyświetlanie 1-5 z 5

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