Water polo players realise their process in water, as basic training, and as dry-land exercises, as additional training. As both training forms must be functionally and logically connected whales, this paper is aimed at determining the relation of dry-land and in-water physical fitness in water polo players aged up to 14 years. The quantitative type of research included a sample of respondents consisting of 42 randomly chosen water polo players from the Republic of Serbia (average age 13.2±0.5 years, BH = 171. 77±7.98 cm, BM = 63.51±8.04 kg, and length of training 4.36±1.43 years). The players were tested for general dry-land physical fitness (long jump; 10s push-ups; 30s sit-ups; flexibility sit and reach test) and test battery indicating general physical fitness in pool (15m crawl; 25m crawl; SOm crawl; 200m crawl; 25m legs crawl kick; 25m breaststroke kick; 25m egg beater kick; 25m with head up; 25m swimming with the ball). The results are analysed by descriptive analysis, followed by multidimensional scoring transformation into the scores of general fitness of players in water and dry. By applying linear regression analysis the level of connection between the observed variables of general dry-land and in-water physical fitness was established. The results have shown that the connection of general scores of dry-land and in-water physical fitness in water polo players aged up to 14 years is on the level of 20.4% (AdjR 2 = 0.204) and is statistically significant on the level F=11.56, p=0.002. Based on the obtained results it can be concluded that it is of utmost importance that the training process of water polo players aged 14 years is performed parallel both in water and out of the pool because this way more efficient positive transfer of mutual physical fitness of the players is in focus.
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