The effects of exercise-induced muscle damage on cycling time-trial performance

J Strength Cond Res. 2011 Aug;25(8):2185-92. doi: 10.1519/JSC.0b013e3181e86148.

Abstract

Previous research has advocated that plyometric training improves endurance performance. However, a consequence of such a training is the immediate and prolonged appearance of exercise-induced muscle damage (EIMD). This study examined whether a single bout of plyometric exercise, designed to elicit muscle damage, affected cycling endurance performance. Seventeen participants were randomly assigned to either a muscle damage (n = 7 men, 1 woman) or nonmuscle damage (n = 8 men, 1 woman) group. Before and at 48 hours, participants were measured for perceived muscle soreness, peak isokinetic strength, and physiological, metabolic, and perceptual responses during 5-minute submaximal cycling at ventilatory threshold (VT) and a 15-minute time trial. Perceived muscle soreness and isokinetic strength (p < 0.05) were significantly altered in the muscle damage group after EIMD. No changes in heart rate or blood lactate were evident during submaximal exercise (p > 0.05). However, VO2, V(E), and rating of perceived exertion (RPE) values were increased at VT in the muscle damage group at 48 hours after EIMD (p < 0.05). During the time trial, mean power output, distance covered, and VO2 were lower in the muscle damage group at 48 hours after EIMD (p < 0.05). However, there was no change in RPE (p > 0.05), suggesting effort perception was unchanged during time-trial performance after EIMD. In conclusion, individuals using concurrent plyometric and endurance training programs to improve endurance performance should be aware of the acute impact of muscle-damaging exercise on subsequent cycling performance.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Athletes
  • Athletic Performance / physiology*
  • Athletic Performance / psychology
  • Bicycling / physiology*
  • Bicycling / psychology
  • Exercise / physiology*
  • Exercise / psychology
  • Female
  • Heart Rate / physiology
  • Humans
  • Lactic Acid / blood
  • Lactic Acid / metabolism
  • Male
  • Muscle Strength / physiology
  • Muscle, Skeletal / injuries*
  • Muscle, Skeletal / physiopathology*
  • Oxygen Consumption / physiology
  • Physical Endurance / physiology
  • Plyometric Exercise / psychology
  • Young Adult

Substances

  • Lactic Acid