Muscularity is a quantifiable physical trait representing the degree of skeletal muscle development, volume, and definition observable in an individual’s phenotype, reflecting long-term metabolic and hormonal history. It is a visual marker of anabolic history.
Origin
Derived from the Latin ‘musculus’ referring to the structure of muscle, this term describes the morphological expression of underlying muscle physiology and training adaptation. It is an outward measure of physical capacity.
Mechanism
The extent of muscularity is determined by the net balance between muscle protein synthesis versus degradation over time, heavily influenced by adequate caloric and protein intake, resistance training stimulus, and sufficient circulating levels of anabolic hormones such as testosterone and IGF-1.
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