Evaluation of office chair comfort/Procjena udobnosti uredskih stolica

The studies of office chair constructions have identified differences in perception of comfort provided by different types of seats. Four seat constructions and the comfort provided to the users were compared by means of subjective indicators. After a two-day sitting on each of the studied chairs, the subjects scored their perception of comfort and discomfort, using the questionnaire with 17 statements. Unlike most similar studies, subjects evaluated seats on their own work places and in the environment to which they are accustomed. Constructional forms of the seat and materials that contributed more to the sense of comfort by minimizing fatigue and pains developed by sitting were determined. Results have shown that the chair with a net is significantly more comfortable than other chairs. The chair with molded PUR foam is significantly more comfortable than the chair with springs, but statistically it does not differ significantly from the chair with slabstock PUR foam. It has been concluded that the chair with a net got higher scores, which might be attributed to its frame construction and the absence of a hard base under the sitting surface. Keywords: subjective method, sitting, comfort, discomfort, office chair Istrazivanjem konstrukcija uredskih stolica utvrdene su razlike u osjecaju udobnosti sjedenja na razlicitim sjedalima. Usporedene su cetiri konstrukcije sjedala i njihove udobnosti za korisnika, i to na temelju subjektivnih pokazatelja. Ispitanici su nakon dvodnevnog sjedenja na stolici ocjenjivali osjecaj udobnosti ili neudobnosti odgovarajuci na upitnik sa 17 ponudenih tvrdnji. Za razliku od vecine slicnih istrazivanja, ispitanici su ocjenjivali sjedala na svojim radnim mjestima i u okolini na koju su naviknuli. Ispitivanjem su odredeni konstrukcijski oblik sjedala i materijali izrade stolica koje pridonose osjecaju vece udobnosti time sto minimaliziraju osjecaj zamora i pojavu bolova pri sjedenju. Rezultati su pokazali da je stolica s mrezom znatno udobnija od ostalih. Stolica s hladno lijevanom PUR spuzvom mnogo je udobnija od stolica s oprugama, ali se statisticki ne razlikuje od stolica s rezanom PUR spuzvom u sjedalu. Zakljuceno je da je stolica s mrezom najbolje ocijenjena zbog njene okvirne konstrukcije i zato sto ispod povrsine za sjedenje nema tvrde podloge. Kljucne rijeci: subjektivna metoda, sjedenje, udobnost, neudobnost, uredska stolica