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The paper contains results of a pollen analysis of sediments in the peatbog Izerskie Bagno (Izerskie Mts.). On the basis of palynological data, the succession of the peat-bog vegetation as well as the age of sediments have been determined. Only the Atlantic and Subboreal periods were distinguished in the profile. Absence of the Subatlantic layers and no human activity were detected.
Cardiovascular responses to exercise in trained endurance child athletes have been largely unexplored. Doppler echocardiography was utilized to compare cardiac variables during progressive upright cycle exercise to exhaustion in trained male prepubertal distance runners (n = 8) and untrained control boys (n = 14). Athletes demonstrated a greater maximal stroke index and cardiac index. Stroke volume...
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