oa South African Journal of Sports Medicine - A quantification of competition-induced increase in heart rate during 10, 21 and 42 km races
Objective: Our previous study has shown that, at any running speed, heart rates (HRs) are higher during competition than during training. The aim of this study was to determine whether this competition-induced increase in HR was affected by race intensity or perceived effort during the race. Design: Male runners training at least 60 km/wk underwent a maximal oxygen consumption test 4 days before a 10 km, 21 km or 42 km race. Two days before the race, subjects underwent a track test to determine the relationship between running speed and HR under non-competitive conditions.
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