Workload assessment during forest protection operations

Witold Grzywiński, Rafał Turowski


The paper presents the results of physical workload assessment during forest protection activities, including the protection of forest plantations against deer and fungi, and additionally, the hanging of birds’ shelters. The structure of work time for each activity was determined in all studied operations, and referred to the 8-hour workday. The net energy expenditure was determined through the measurement of pulmonary ventilation conducted with an MWE-1 energy expenditure meter. Different energy expenditure per minute was recorded, amounting to 35 kJ (4.9-40.2 kJ∙min-1). Net energy expenditure of work shift ranged from 7 000 to 9 800 kJ. During the fencing of forest plantations the most repetitive movements were observed. In Rother forest protection activities, the level of work repetitiveness was low.


forest protection, work time structure, energy expenditure, category of work intensity

Full Text:



Apud E., Valdes S. (1995): Ergonomics in forestry: The Chilean case. ILO, Geneva.

Fibiger W. (1976): Ochrona zdrowia pracowników leśnictwa. PZWL, Warszawa.

Grzywiński W. (2003): Wpływ zastosowanej techniki i technologii na poziom humanizacji pracy w leśnictwie. Praca doktorska. Akademia Rolnicza, Poznań.

Grzywiński W. (2004): Energy load of workers employed at timber harvesting. Electron. J. Pol. Agric. Univ.,Ser. Forestry 7, 2.

Grzywiński W. (2009): Energy expenditure in some silvicultural works. Electron. J. Pol. Agric. Univ., Ser. Forestry 12, 4.

Grzywiński W. (2010): Ergonomia i ochrona pracy w leśnictwie. Przewodnik do ćwiczeń. Wyd. II . Wyd. UP w Poznaniu, Poznań.

Jakubowski R. (1973): Leśnictwo. W: Charakterystyka higieniczna niektórych stanowisk pracy w rolnictwie i leśnictwie. W. Hołobut (red.). PZWL, Warszawa: 149-169.

Konarska M., Kurkus-Rozowska B., Krokosz A., Furmanik M. (1994): Application of pulmonary ventilation measurements to assess energy expenditure during manual and massive muscular work. Proceedings of the 12th Congress of IE A, Toronto, Human Factor Association: 316-317.

Koradecka D., Bugajska J. (1998): Ocena wielkości obciążenia pracą fizyczną na stanowiskach roboczych. CIOP, Warszawa.

Leśnictwo 2011. (2011): GUS , Warszawa.

Makowiec-Dąbrowska T. (1999): Fizjologia pracy. W: Higiena pracy. Indulski J.A. (red.). Wyd. IM P, Łódź: 71-152.

Makowiec-Dąbrowska T., Radwan-Włodarczyk Z., Koszada-Włodarczyk W., Jóźwiak Z.W. (2000): Obciążenie fizyczne – praktyczne zastosowanie różnych metod oceny. Wyd. IM P, Łódź.

Meyer J.P., Horwat F., Didry G. (1991): Comparaison de différentes méthodes d’estimation de la dépense énergétique en situation de travail [Comparison of various methods of energetic cost estimation at the workplace]. Arch. Mal. Prof. 52,1:17-23.

Forestry Letters  eISSN 2450-4920

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we'll assume that you are happy to receive all cookies from this website. If you would like to change your preferences you may do so by following the instructions here