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Recovery from endurance exercise.

W M Sherman1

  • 1School of Health, Physical Education, and Recreation, Ohio State University, Columbus 43210.

Medicine and Science in Sports and Exercise
|September 1, 1992
PubMed
Summary
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Athletes deplete glycogen during endurance exercise. Consuming 8-10g carbohydrate/kg body weight immediately after exercise and frequently thereafter replenishes muscle glycogen within 24 hours for optimal recovery.

Area of Science:

  • Exercise Physiology
  • Sports Nutrition
  • Metabolic Recovery

Background:

  • Endurance exercise significantly depletes muscle and liver glycogen stores in athletes.
  • Post-exercise glycogen replenishment is crucial for subsequent performance and recovery.

Purpose of the Study:

  • To investigate the optimal carbohydrate intake strategies for muscle and liver glycogen resynthesis after endurance exercise.
  • To determine the time course and efficacy of glycogen replenishment within a 24-hour period.

Main Methods:

  • Review of existing literature on exercise-induced glycogen depletion and carbohydrate feeding protocols.
  • Analysis of studies measuring muscle and liver glycogen concentrations post-exercise under varying nutritional interventions.

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Main Results:

  • Muscle glycogen replenishment is prioritized over liver glycogen post-exercise.
  • Adequate carbohydrate consumption (8-10g/kg body weight) is necessary for complete muscle glycogen resynthesis within 24 hours.
  • Immediate and frequent carbohydrate intake post-exercise optimizes muscle glycogen synthesis rates.

Conclusions:

  • Effective glycogen resynthesis is achievable within 24 hours with appropriate carbohydrate strategies.
  • While glycogen levels can normalize, full recovery of muscle function may not always coincide with glycogen normalization.