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Purpose: The aim of this study is to compare the internal response of organism (heart rate) to specific game load of female basketball players in category U19 (1st division) and senior category (2nd division). Methods: Eight female basketball players in category U19 (average 17.4+/-0.99 years old, body height 181+/-5.95 cm, body weight 63.6+/-5.76 kg) and nine female basketball players in senior category (average 20.6+/-2.94 years old, body height 178.4+/-5.5 cm, body weight 64,9+/-5.84 kg) participated in our study. The figures of maximum heart rate (HRmax) in endurance shuttle run test were used to determine five zones of intensity of physical activity. 1st zone (very light intensity) <50% of HRmax, 2nd zone (light intensity) 50-63% of HRmax, 3rd zone (moderate intensity) 64-76% of HRmax, 4th zone (hard intensity) 77-93% of HRmax, 5th zone (very hard intensity) 94-100% of HRmax. During the game the heart rate and its development was monitored by the telemetric device Suunto Team Pack. Results: When the intensity of specific game load between U19 and senior female basketball players, in individual intensity zones as well as in % of HRmax, was compared no statistically significant difference was recorded (p>0.05). The players in category U19 were active in 1st, 2nd, 3rd, 4th and 5th zone of intensity 0.03%, 1.31%, 10.31%, 66.81%, 21.55% of the total time, respectively. The players in senior category were active in 1st, 2nd, 3rd, 4th and 5th zone of intensity 0.02%, 1.45%, 7.03%, 69.06%, 22.42% of the total time, respectively. The average figure of the heart rate during the game reached 87.53% of HRmax in category U19 and 87.9% of HRmax in senior category. Conclusion: The results indicate high and almost identical physiological demands on monitored female basketball players during the game in both categories. Therefore, the transition, from the physiological (conditioning) point of view while excluding all other factors, from one category (the U19 1st division) to the other (the senior 2nd division) should be without complications. However, we assume that one should expect higher physiological (conditioning) demands in the senior category of the 1st division.
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