Original scientific paper

Estimation of physical work load by statistical analysis of the heart rate in a conveyor-belt worker

Ivica Kontošić ; Primary Health Centre, Rijeka, Croatia
M. Vukelić ; Primary Health Centre, Rijeka, Croatia
M. Pancić ; Primary Health Centre, Rijeka, Croatia
J. Kunišek ; Primary Health Centre, Rijeka, Croatia

Abstract

Physical work load was estimated in a female conveyor-belt worker in a bottling plant. Estimation was based on continuous measurement and on calculation of average heart rate values in three-minute and one-hour periods and during the total measuring period. The thermal component of the heart rate was calculated by means of the corrected effective temperature, for the one-hour periods. The average heart rate at rest was also determined. The work component of the heart rate was calculated by subtraction of the resting heart rate and the heart rate measured at 50 W, using a regression equation. The average estimated gross energy expenditure during the work was 9.6±1.3 kJ/min corresponding to the category of light industrial work. The average estimated oxygen uptake was 0.42±0.06 L/min. The average performed mechanical work was 12.2±4.2 W, i.e. the energy expenditure was 8.3±1.5%.

Keywords

energy expenditure; heart rate; oxygen uptake

Hrčak ID:

145778

URI

https://hrcak.srce.hr/145778

Publication date:

6.7.1995.

Article data in other languages: croatian

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