Abstract

ESPINOZA, Eduardo Navarrete  and  LIZAMA, Estefanía Saldías. Perception of the weight of a cargo according to body composition in interurban bus assistants. Cienc Trab. [online]. 2018, vol.20, n.61, pp.7-13. ISSN 0718-2449.  http://dx.doi.org/10.4067/S0718-24492018000100007.

In order to determine the amount of weight corresponding to differ ent linguistic categories according to the perception of the burden handled by workers and based on their body composition, a study was carried out on interurban bus attendants. The variables studied were: body composition expressed in terms of physical constitution, perceived effort through the Borg scale and comfort test using the Corlett and Bishop diagram. The results indicated that for the physi cal constitution classified as standard, the workers considered as moderate weight 19.6 kg; for the lack of exercises constitution, a weight of 14.3 kg and for obese constitution, an amount of 10.5 kg; which shows a direct relationship between the body composition and the perception of the weight of the manipulated load, since as the physical complexion is less healthy the ability to lift a load decreas es significantly. This research compares the results obtained with the weight limits established by Law No. 20,949, which regulates the maximum weight of burden for humans to carry in Chile, which shows that the perceived weight, even in the extremely heavy cate gory, is framed within of the current law.

Keywords : burden handling; psychophysics; body composi tion; law 20,949.

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