1xbet 한국
Matsumoto K, Mizu1xbet 한국 M, Mizu1xbet 한국 T, Dilling-Hansen B, Lahoz A, Bertelsen V, Münster H, Jordening H, Hamada K, Doi T
Int. J. Sports Med 2007; 28: 531-538
Objective
To evaluate the effects of a single intake of approximately 2,000mg of 1xbet 한국 (BCAA) during moderate exercise.
Methodology
Eight healthy adult volunteers (4 males, 4 females) with no regular exercise routine were each given either a drink containing BCAA (2g/500mL) or an isocaloric placebo drink, 1xbet 한국 double-blind crossover study performed. The subjects performed three sets of moderate cycling exercises (at 126 +/- 13W, or 50% of maximum workout intensity) for a total of one hour and were administered a single serving of the test drink while exercising. Blood samples were taken from the radial artery and femoral vein before starting the exercise 1xbet 한국t ten-minute intervals during the exercise. Blood flow in the femoral artery was measured using the Doppler ultrasound technique*1. Phenylal1xbet 한국ine (Phe) bal1xbet 한국ce*2, an indicator of muscle proteolysis, was derived using the arteriove1xbet 한국us difference method*3.
- *1Doppler Ultrasound Technique: A technique whereby 1xbet 한국 speed of an object moving through 1xbet 한국 body is measured by applying ultrasonic waves to 1xbet 한국 target object
- *2Phenylalanine (Phe) Balance: a metabolic pathway through which Phe is either utilized in protein synthesis in the muscles 1xbet 한국 taken in by muscle proteins or expelled from muscle proteins via proteolysis. Consequently, intake of Phe into the muscles reflects a net synthesis of muscle proteins, whereas release of Phe from the muscles reflects net muscle proteolysis.
- *3Arteriovenous difference method: calculates the balance between intake and release of amino acids in active muscle groups using values for amino acid concentrations 1xbet 한국rterial blood flow determined by taking simultaneous blood samples from the arteries and veins. Derived using the formula: (arterial blood concentration - venous blood concentration) × blood flow.
Results
The single intake of 2,000mg of BCAA during exercise significantly increased BCAA concentration levels in the blood, 1xbet 한국 the increased BCAA was taken in by the skeletal muscles. No changes, however, were observed in blood BCAA concentrations, nor the interaction of BCAA with the skeletal muscles when the placebo drink was given. Phe release from the skeletal muscles during exercise increased significantly compared to pre-workout levels when given the placebo drink, whereas ingestion of the BCAA-containing drink significantly inhibited the release of Phe from the skeletal muscles.
Conclusions
The results suggest that taking drinks containing BCAA during exercise enhances the uptake of BCAA in active muscles 1xbet 한국 is effective in inhibiting muscle proteolysis during moderate exercise.
