The aerobic capacity changes of different ages young orienteers in long term training

The aim of this study was to investigate the aerobic capacity from different ages of young orienteers in long term training. The study embraced 34 orienteers. According to age (years) and gender (male, M; females, F), six groups of athletes were singled out: F12 — 14 (12—14 years famales) (n = 4), F15 — 17 (15 — 17 years famales) (n = 6), F18 — 20 (18 — 20 years famales) (n = 7), M12—14 (12 — 14 years mens) (n = 8), M15 — 17 (15 — 17 years mens) (n = 6), M18 — 20 (18 — 20 years mens) (n = 3). Althletes do the continuous consistently increased load test (CIL) who was carried out in cycle ergometer ERGO — FIT 177. Subjects were worked on cycle ergometer until complete fatigue. Pedal treading rate — 70 beats / min., workload has increased consistently during the entire test, the 5 W every 10 seconds. All time of the test, heart rate (HR) was recorded heart rate monitor \"Polar RS 800i, (Finland). Conclusions. 15 to 17 years old male characteristics observed in the aerobic maximum aerobic power (W) at the absolute maximum oxygen uptake (l/min), a significant decrease in the second and third year of the survey (p < 0,05). Significant changes girls 12 — 14 years of age were not found during the study period. 15 — 17 years old girls noticeable decrease in the accumulation of lactate threshold (W) and reached the maximum test power (W), the third study year (p < 0,05). 18 — 20 years old girls in the accumulation of significant changes in lactate threshold (W), heart rate at lactate accumulation threshold (beats / min), the absolute maximum oxygen consumption (l/min) and maximum aerobic power (W), the third year of the study (p < 0,05). Significant differences was found 12 — 14 and 15 — 17 years old boys in in the maximum heart rate (beats / min), relative peak oxygen consumption (ml/kg/min), heart rate after work after a minute, heart rate after work after 5 minutes of work (as a percentage of maximum), the accumulation of lactate threshold (W) test achieved a maximum power (W) (p < 0,05). Most significant differences in aerobic performance observed between the 18 — 20 years old boys and girls (the accumulation of lactate threshold (W), maximum aerobic power (W) and the absolute maximum oxygen uptake (l/min) (p < 0,05)