17 triathletes (age:30,0±6, 8 years; VO2max: 65, 3±8,0 ml. kg/min. E-3) participated in an triathlon-test under Laboratory conditions, consisting of 600m of swimming, 20 km of cycling, and 15 minutes of running on the treadmill at 12 km/h and
4,5%
slope, continued by increasing slope by 1,5% every two minutes until exhaustion. While O2-uptake and heart rate were comparable after change of disciplines, the expired change of disciplines, the expired volume and O2-utilisation differed
remarkably in
readaption and steady-state. The extend of alterations showed significant correlations to age (r=o, 63; r=0,85), changes in HR from swimming to cycling (r=0,61), blood pressure in preceding part (r=0,53/ r=0, 60), and actual lactic acid(r=0,84).
Depending on previously practiced sports (swimming, cycling or running ) differing patterns of examined parameters resulted.
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