[Dust-measurements in the air of school-sporthalls (author's transl)].

Corresponding to the importance of sport in infancy and youth there were made experimental studies to examine the load of dust in school-sporthalls. In one selected school-sporthall of Erfurt 900 dust-measurements with Zeiss-Conimeter type 10 were carried out for a half-year in winter, and supplementary it was measured with the soviet conimeter type A 3-4 some days. The statistical evaluation allowed a break down of the sport-exercises in 3 groups dependent of the lot airborne dust in the sporthall: 1. gymnastic with apparatus 2. physical training on-floor 3. running and plays. The average quantities of dust during these three above mentioned exercises increase from group 1 to group 3, and they differ significantly. The results are discussed in connection with the literature which for the greater part originates from Poland and Soviet Union.