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Arterial distensibility of the popliteal (A) and carotid arteries (B) before (PRE) and after (POST) 6 wk of either sprint interval training (SIT) or endurance training (ET). Popliteal artery distensibility was higher after training in both groups, whereas carotid artery distensibility was unchanged. Values are means ± SD; n = 10 per group. *P < 0.05 vs. PRE; main effect for time.
