Growth Hormone Peptides and Athletic Performance Science
Growth hormone secretagogues and anabolic peptides represent a major category of peptide research, with applications spanning muscle hypertrophy, lean mass retention, fat loss, and recovery optimization. This hub examines the science behind these compounds with a focus on mechanisms, comparative efficacy, and evidence-based protocols.
Key Peptide Categories
- GH Secretagogues: ipamorelin, sermorelin, GHRP-2, GHRP-6, hexarelin
- GH-Releasing Hormones: CJC-1295 (with and without DAC), tesamorelin
- IGF-1 Variants: IGF-1 LR3, IGF-1 DES, PEG-MGF
- Myostatin Inhibitors: follistatin-344 research
- Stacking strategies for lean mass and performance
How Growth Hormone Peptides Work
GH secretagogues stimulate the anterior pituitary gland to release endogenous growth hormone through two primary receptor pathways: GHRH receptors (targeted by CJC-1295 and sermorelin) and ghrelin/GHS receptors (targeted by ipamorelin, GHRP-2, GHRP-6, and hexarelin). The combination of both pathways produces a synergistic GH pulse that mimics the body's natural pulsatile release pattern.
IGF-1 variants act downstream of growth hormone, directly promoting muscle protein synthesis, satellite cell activation, and hyperplasia. Our articles compare these pathways, examine stacking protocols, and review the clinical evidence for each peptide.
