topicLeucine Muscle Protein Synthesis Randomized Trial
claimConsequently, this condition is associated with adverse outcomes such as physical disability, a poor quality of life, and increased mortality.
evidence level3
citationVersari Ilaria (2026)
sourceVitamin D as a Modulator of Sarcopenia in Women: Interactions with Dietary Patterns and Physical Exercise
topicLeucine Muscle Protein Synthesis Randomized Trial
claim5 6 7 8 9 10 Although sarcopenia affects both sexes, accumulating evidence suggests that women may be disproportionately impacted due to sex-specific physiological and hormonal factors.
evidence level3
citationVersari Ilaria (2026)
sourceVitamin D as a Modulator of Sarcopenia in Women: Interactions with Dietary Patterns and Physical Exercise
topicLeucine Muscle Protein Synthesis Randomized Trial
claimCrucially, sarcopenia is a multifactorial condition involving chronic inflammation, nutritional deficiencies, and reduced physical activity [].
evidence level3
citationVersari Ilaria (2026)
sourceVitamin D as a Modulator of Sarcopenia in Women: Interactions with Dietary Patterns and Physical Exercise
topicLeucine Muscle Protein Synthesis Randomized Trial
claim1 2 3 4 Sarcopenia is a progressive and generalized skeletal muscle disorder characterized by a loss of muscle mass, strength, and physical performance.
evidence level3
citationVersari Ilaria (2026)
sourceVitamin D as a Modulator of Sarcopenia in Women: Interactions with Dietary Patterns and Physical Exercise
topicLeucine Muscle Protein Synthesis Randomized Trial
claimLEAA mixtures are defined here as oral supplements containing all nine indispensable amino acids with about 40% or more leucine by weight; studies of leucine-enriched branched-chain amino acids, free leucine, and leucine-enriched protein are treated as indirect evidence.
evidence level4
citationNagao K (2026)
sourceLeucine-Enriched Essential Amino Acids in Clinical Practice: A Narrative Review.
topicLeucine Muscle Protein Synthesis Randomized Trial
claimFunction improved when LEAA was combined with exercise, but exercise was given in all such trials, so the effect of LEAA alone is unclear.
evidence level4
citationNagao K (2026)
sourceLeucine-Enriched Essential Amino Acids in Clinical Practice: A Narrative Review.
topicLeucine Muscle Protein Synthesis Randomized Trial
claimEvidence for long-term benefits that patients can feel is still limited, and safety has not been assessed systematically.
evidence level4
citationNagao K (2026)
sourceLeucine-Enriched Essential Amino Acids in Clinical Practice: A Narrative Review.
topicLeucine Muscle Protein Synthesis Randomized Trial
claimMuscle wasting driven by aging, chronic disease, or intensive exercise undermines mobility, metabolic health, and survival-yet the people who lose the most muscle are often those least able to eat more protein.
evidence level4
citationNagao K (2026)
sourceLeucine-Enriched Essential Amino Acids in Clinical Practice: A Narrative Review.