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Protein and physical performance.

M A Tarnopolsky1

  • 1Department of Neurology/Neurological Rehabilitation, McMaster University Medical Center, Hamilton, Ontario, Canada. tarnopol@fhs.mcmaster.ca

Current Opinion in Clinical Nutrition and Metabolic Care
|March 11, 2000
PubMed
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Advances in understanding protein metabolism regulation aid in maximizing muscle performance for athletes and aging individuals. Nutritional and exercise strategies show promise in improving muscle health and counteracting age-related decline.

Area of Science:

  • Exercise physiology
  • Nutritional biochemistry
  • Muscle metabolism

Background:

  • Protein metabolism regulation is crucial for muscle performance, particularly in sports and aging.
  • Understanding muscle protein synthesis and breakdown rates is key to optimizing muscle health.
  • Age-related decline in muscle mass and function is a significant concern.

Purpose of the Study:

  • To review recent advances in understanding protein metabolism regulation.
  • To highlight the role of exercise and nutrient timing in muscle protein metabolism.
  • To explore potential interventions for mitigating age-related muscle loss.

Main Methods:

  • Utilizing 24-hour amino acid infusion studies.
  • Employing methods to measure skeletal muscle fractional breakdown rate.

Related Experiment Videos

  • Assessing the fractional synthetic rate of specific muscle proteins.

    • Main Results:

    • Significant progress has been made in understanding protein metabolism regulation.
    • Altering nutrient composition and delivery timing shows potential benefits for protein metabolism.
    • Exercise and nutritional interventions may counteract negative aging effects on muscle protein.

    Conclusions:

    • Enhanced understanding of protein metabolism supports strategies for maximizing muscle performance.
    • Nutrient timing and composition are important factors in muscle protein regulation.
    • Exercise and nutrition can positively influence muscle health during aging.