The clinical process of intentionally and strategically altering the body’s entire structure, focusing on improving the ratio of lean body mass (muscle, bone, water) to fat mass. This process is a more comprehensive goal than simple weight loss, as it prioritizes functional tissue preservation and enhancement. Successful re-composition is fundamentally dependent on optimized hormonal signaling and targeted nutritional and exercise programming.
Origin
The term evolved from body composition analysis in sports science and has been adopted by clinical wellness to reflect a deeper, more health-focused metric than the simplistic Body Mass Index (BMI). “Systemic” emphasizes that the change affects the entire physiological system, not just localized fat stores.
Mechanism
Re-composition requires simultaneously stimulating anabolic pathways to build or maintain muscle and activating lipolytic pathways to mobilize fat stores. Hormones like testosterone, growth hormone, and thyroid hormones are key regulators of this balance. The mechanism involves manipulating nutrient timing and exercise intensity to create a net energy deficit for fat loss while maintaining a positive nitrogen balance for muscle synthesis.
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