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Setting and participants This research included 32 mail professional players divided in two groups, water polo (n1=15, age 25.95±3.60 years old, body height 192.70±3.76 cm, body weight 100.80±5.84 kg) and volleyball (n2=17, age 24.53±3.80 years old, body height 198.44±4.97 cm, body weigh 91.47±9.84 kg). The research was conducted in the laboratory for functional diagnostic in the National Institute of Sport in Belgrade. Methods Measurement of respiratory parameters was performed using a Cosmed spyrometer Pony graphic. Results By applying the T test on two small independent samples we didn't notice statistically signifi cance difference in respiratory parameters between elite national water polo and volleyball teams. On the level of statistic signifi cance p<0.001 we spotted a difference in body height (water polo 192.70±3.76 cm vs volleyball 198.44±4.97 cm) and body weight (water polo 100.80±5.84 kg vs volleyball 91.41±9.84 kg). Conclusions We observed no signifi cant differences in static and dynamic respiratory parameters among the participating senior water polo and volleyball players. We conclude that after complete biological development, it is not possible to infl uence most respiratory parameters studied.

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