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Wyszukujesz frazę "Zadry, H. R." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
The Relation Between Upper Limb Muscle and Brain Activity in Two Precision Levels of Repetitive Light Tasks
Autorzy:
Zadry, H. R.
Md Dawal, S. Z.
Taha, Z.
Powiązania:
https://bibliotekanauki.pl/articles/90457.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
upper limb muscle
brain activity
precision repetitive
light task
Opis:
A study was conducted to investigate the effects of repetitive light tasks of low and high precision on upper limb muscles and brain activities. Surface electromyography (EMG) and electroencephalography (EEG) were used to measure the muscle and brain activity of 10 subjects. The results show that the root-mean-square (RMS) and mean power frquency (MPF) of the muscle activity and the mean power of the EEG alpha bands were higher on the high-precision task than on the low-precision one. There was also a high and significant correlation between upper limb muscle and brain activity during the tasks. The longer the time and the more precise the task, the more the subjects become fatigued both physically and mentally. Thus, these results could be potentially useful in managing fatigue, especially fatique related to muscle and mental workload.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 4; 373-384
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anthropometric Database for the Learning Environment of High School and University Students
Autorzy:
Dawal, S. Z. M.
Zadry, H. R.
Azmi, S. N. S.
Rohim, S. R.
Sartika, S. J.
Powiązania:
https://bibliotekanauki.pl/articles/89999.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
anthropometry
high school students
university students
computer workstation
Opis:
This paper presents an anthropometric database of high school and university students from Kuala Lumpur,Malaysia. Forty-one high school participants (21 males and 20 females), 13–17 years old, and 143 university students (74 males and 69 females) took part in the study. Twenty-one static body dimensions were measured. The greatest mean differences in the anthropometric data between male and female high school students were found in the sitting elbow height. In addition, a comparison of anthropometric data of male and female university students showed that data for males and females were significantly different, except for buttock–popliteal length, sitting elbow height and thigh clearance. The primary aim of this study was to develop an anthropometric database that could be used as a primary reference in designing products, devices and equipment for ergonomic learning environments.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 4; 461-472
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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