Bulletin of Experimental Biology and Medicine

, Volume 122, Issue 2, pp 769–771 | Cite as

Relationship of adaptive capabilities in athletes to the type of reaction of their opioid system to stressful physical exercise

  • I. D. Surkina
  • A. I. Golovachov
  • A. A. Zozulya
General Pathology and Pathological Physiology


Eleven highly skilled skiers are examined during and after prolonged exercising on a bicycle ergometer at a Vo2 equal to 80% of the maximum. Parameters of mechanical work, Vo2, plasma lactate concentration, and activity of δ-type opioid receptor ligands are recorded. The opioid system is found to develop two types of reaction to the exercise: activation in the course of work on the ergometer with a tendency toward normalization in the recovery period (Type A) or inhibition during the exercise (Type B). The reaction of Type B involved a rapid increase in the activity of the opioid system immediately after the exercise in some cases and a further fall in the activity of plasma opioids in others. Skiers with Type B reaction performed a lesser amount of work at a higher energy cost than did those with Type A. It is concluded that the latter type of reaction is more efficient than the former.

Key Words

adaptation opioid system physical exercise energy supply 


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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • I. D. Surkina
    • 1
  • A. I. Golovachov
    • 1
  • A. A. Zozulya
    • 1
  1. 1.Research Institute of SportsNational Research Center for Mental Health Russian Academy of Medical SciencesMoscow

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