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Pertti Harstela (email)

Metsätyön kuormittavuuden määrittelyä.

Harstela P. (1978). Metsätyön kuormittavuuden määrittelyä. Silva Fennica vol. 12 no. 1 article id 4985. https://doi.org/10.14214/sf.a14839

English title: Definition of the amount of strain caused by forest work


The concepts central to ergonomic research connected with the amount of strain caused by work was studied. A model was made to describe the process of strain. The model includes the following concepts: load or stress, human input, worker, strain, renewal of human resources, output and their hierarchical units. Based on the quality of human input, the forest work was roughly divided into two categories: (1) work demanding primarily muscle activity and (2) neuro-sensory work. In the first group, especially in cutting work, the main part of the human input is intensive consumption of muscle energy. In addition, work load causes accidents, wear of skeletal and muscular systems and processes by noise, vibrations, and climate. Correspondingly, when operating forest machines, the human input is mainly neuro-sensory functions of the central nervous system. Work load causes directly the effects of low frequency vibration and of other work conditions. The model was tested on data from research of forest work.

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Original keywords
metsätyö; ergonomia; työn kuormittavuus

English keywords
ergonomics; work load; forest work; physical stress

Published in 1978

Views 509

Available at https://doi.org/10.14214/sf.a14839 | Download PDF

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