Plasma beta-endorphin concentration: response to intensity and duration of exercise.

@article{Goldfarb1990PlasmaBC,
  title={Plasma beta-endorphin concentration: response to intensity and duration of exercise.},
  author={Allan H. Goldfarb and Bradley D. Hatfield and Don Armstrong and James N. Potts},
  journal={Medicine and science in sports and exercise},
  year={1990},
  volume={22 2},
  pages={241-4}
}
Twelve college-age men exercised on a bicycle ergometer to VO2max and at 60, 70, and 80% VO2max for 30 min to determine the effects of exercise intensity on plasma beta-endorphin (B-EP). The time course for alterations in B-EP and the relationship to lactate were also examined. Following the VO2max test, the three submaximal intensities were completed on separate days using a counter-balanced design. Blood was sampled from an indwelling venous catheter at rest during exercise and recovery to… CONTINUE READING
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