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First received: September 19, 2026

Clinical Trial: Exercise Intensity and Circulating CD34+ Progenitor Cell Mobilization in Trained Adults

Study Status: COMPLETED

Recruit Status: COMPLETED

Condition: Exercise-Induced Circulating Progenitor Cell Mobilization

Study Type: INTERVENTIONAL


Official Title: Exercise Intensity Shapes Circulating CD34+ Progenitor-Cell Mobilization Despite Matched External Work: A Randomized Crossover Study

Brief Summary: This randomized crossover study investigated whether exercise intensity influences the mobilization of circulating CD34+ progenitor cells when total external work is matched. Forty trained male endurance athletes completed two cycling exercise conditions in randomized order: a higher-intensity condition at 70% of peak work rate (WRpeak) and a lower-intensity condition at 30% WRpeak. Both conditions were performed until 250 kJ of external work had been completed and were separated by a washout period of at least 7…

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