Muscle metabolism and nutrition

Muscle metabolism research examines how cells build, break down, and recycle proteins in response to exercise and dietary inputs, with particular attention to the signaling cascades that determine whether muscle tissue grows or atrophies. Amino acids—especially leucine—act as both building blocks and molecular signals, activating pathways like mTORC1 that coordinate muscle protein synthesis with nutrient availability and mechanical load from resistance training. Scientists working at the intersection of biochemistry and cell biology are working to clarify how factors such as protein source, meal timing, and aging alter these anabolic responses at the cellular level. Open questions include how to optimally sustain muscle mass in older adults whose signaling sensitivity declines, and how different dietary protein profiles—plant versus animal, whole food versus isolate—compare in their ability to drive synthesis under real-world conditions.

Works

81,895

Total citations

1,581,414

Keywords

ProteinMetabolismExerciseNutritionAmino AcidsMuscle Protein Synthesis