Document ID (ISN) | 47856 |
CIS number |
87-712 |
ISSN - Serial title |
0549-4974 - Japanese Journal of Ergonomics - Ningen Kogaku |
Year |
1986 |
Convention or series no. |
|
Author(s) |
Onishi N. |
Title |
Arm and shoulder muscle load in various keyboard operating jobs |
Original title |
Kiibōdo operēshon sagyō no kinteki-futan [in Japanese] |
Bibliographic information |
Apr. 1986, Vol.22, No.2, p.75-80. Illus. 9 ref. |
Abstract |
Mechanisation in manufacturing and offices has reduced the physical workload on workers but at the same time it has led to simpler and more repetitive tasks. Most of these tasks demand less energy expenditure than before and cleaner workplaces. In addition to the mental and visual fatigue caused by concentrated and speedy data processing, a great many operators, especially women, suffer from local fatigue in the upper limb regions. This study involved the EMGs and fatigue measurements of the arms and shoulders of keyboard operators of a data input system. Their mean body height was 156.9cm, their keyboard height 77.87cm and the seat height was mostly 45.49cm. More than 60% of them complained of pain and stiffness in the shoulder and arm muscles. Their feelings of eyestrain and shoulder fatigue increased during the day's work more markedly than those of general office workers. It is essential for the prevention of this kind of chronic fatigue to improve ergonomic keyboard layout and to insert short rest pauses as frequently as possible. |
Descriptors (primary) |
fatigue; keyboard operations; office work; visual fatigue |
Descriptors (secondary) |
shoulder; ergonomics |
Document type |
D - Periodical articles |
Subject(s) |
Occupational physiology
|
Broad subject area(s) |
Physiology, ergonomics
|
Browse category(ies) |
Office work Fatigue
|