Cilj rada bio je procijeniti opterećenje radnika pri podizanju tereta koristeći se ergonomskom metodom te metodom ocjenjivanja opterećenja radnika prema Pravilniku o zaštiti na radu pri ručnom prenošenju tereta. Ispitanik je bio radnik muškog spola visine 185 cm i mase 85 kg. Analizirana su dva radna postupka: podizanje s poda kutije mase 8 kg i ulaganje na policu na dvije različite razine te podizanje kutije mase 25 kg s poda na radni stol. Ergonomska metoda koristi se intraabdominalnim tlakom za procjenu opterećenja ispitanika, a sastoji se od izrade biomehaničkih modela u sagitalnoj ravnini te izračunavanja lumbalnog momenta i intraabdominalnog tlaka. Intraabdominalni tlakovi utvrđeni su za svaki radni položaj i uspoređeni s kritičnom vrijednosti. Metoda ocjenjivanja opterećenja radnika prema Pravilniku temelji se na bodovnom vrednovanju: učestalosti radnih zadaća, mase tereta, položaja tijela pri prenošenju, ergonomskih uvjeta na radnom mjestu, radnog iskustva i temperature u radnom okolišu. Ergonomska analiza pokazala je da se kod podizanja tereta od 25 kg javlja intraabdominalni tlak veći od kritične vrijednosti. Metodom ocjenjivanja utvrđena su povećana opterećenja, s većim opterećenjem za slučaj tereta od 25 kg. Preporuka je da se kod podizanja tereta od 25 kg smanji broj zadataka podizanja tijekom dana i radno opterećenje raspodijeli na više radnika te da se teret nosi što bliže trupu, uz ravna leđa, jer se na taj način smanjuju krak rezultantne sile, lumbalni moment i intraabdominalni tlak.The aim of this study was to estimate the load acting on the worker during weight lifting using the ergonomic approach and the method of load assessment set out in the Regulations on Safety Requirements for the Manual Handling of Loads. One volunteer employee (height 185 cm, body mass 85 kg) was included in the study. Two lifting tasks were analyzed: lifting a box of 8 kg mass from the ground to the shelves of two different heights, and lifting a box of 25 kg mass from the ground to the work table. The ergonomic method used intraabdominal pressure as a measure of load acting on the worker. The method consists of constructing biomechanical models in the sagittal plain and calculation of the lumbar moment and intraabdominal pressure. The values of intraabdominal pressure were determined for every working posture and compared with critical value. The method of the work load assessment, according to the Regulations on Safety Requirements for the Manual Handling of Loads, relies on a point-based assessment of loads which takes into account: frequency of the working tasks, load mass, body postures, ergonomic conditions, work experience and temperature in the work environment. The ergonomic analysis showed that lifting a 25 kg load causes intraabdominal pressure which is higher than critical value. The method of the work load assessment set in the Regulations showed that increased load was acting on the worker in both working tasks, and the point value was higher when the box of 25 kg mass was lifted. In the case of the 25 kg load, it was recommended to share lifting tasks among several workers and to keep the load as close to the body as possible
