Journal
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
Volume 105, Issue 4, Pages 559-567Publisher
SPRINGER
DOI: 10.1007/s00421-008-0935-z
Keywords
Muscle damage; Submaximal exercise; Time-trial
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This study evaluated the effects of exercise-induced muscle damage (EIMD) on fixed-load cycling and 5-min time-trial performance. Seven recreational athletes performed two submaximal fixed-load exercise bouts followed by a 5-min time-trial before, 48 and 168 h following 100 counter-movement jumps. Measurements of <(V)over dot>O(2), heart rate, RER and blood lactate concentration remained unchanged during the fixed-load bouts following jumping exercise. However, <(V)over dot>(E) and <(V)over dot>(E)/<(V)over dot>O(2) increased (P< 0.05) at 48 h. RPE values were higher at 48 h as were the ratio of RPE: HR and RPE:<(V)over dot>O(2) (P < 0.05). In the time-trial, mean <(V)over dot>O(2); peak power output, mean power output, distance covered and post exercise blood lactate were lower at 48 h (P < 0.05). RPE remained unchanged between trials. These findings indicate that the ventilatory equivalent for oxygen and perceived exertion at submaximal work rates are increased 48 h following eccentric exercise. Furthermore, EIMD increases perceived exertion and impairs performance during a 5-min all-out effort.
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