In young resistance-trained males, high-dose leucine supplementation did not enhance muscle strength and mass gains, stated new study.
High-dose leucine supplementation did not enhance muscle strength and mass gains after a 12-wk RT program in young resistance-trained males consuming adequate amounts of dietary protein, revealed the study. In exercising adults, leucine amino acid was considered the critical nutrient-derived driver of muscle protein synthesis, leading to speculation that leucine supplementation could improve muscle mass or growth.
‘High-dose leucine supplementation did not enhance gains in muscle strength and mass after a 12-wk RT program in young resistance-trained males consuming adequate amounts of dietary protein.’
But very few studies have established the long-term effects of leucine supplementation on resistance training (RT)–induced gains in muscle mass and strength. Study
Researchers conducted a survey to determine the impact of 10 g of leucine on muscle mass and strength in response to RT in healthy young men. The study participants (25 young, healthy adults) were engaged in a 12-week supervised resistance training program and given 10 g/day (2x5 g/day) supplemental leucine.
Study Results
Leucine supplementation did not enhance the exercise program's effect on healthy adults consuming adequate amounts of protein (>1.6 g/kg/day).
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Study authors further revealed that sufficient protein provision might have saturated the muscle protein synthetic response, an effect known as muscle full, mitigating any possible additional effects of leucine supplementation.
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- Lentils
Source-Medindia