Collagen is the most abundant protein in the human body, making up the majority of tendons, ligaments, cartilage, skin, and bone. Unlike muscle protein, collagen synthesis relies specifically on glycine, proline, and hydroxyproline - amino acids provided by collagen supplements. This is why standard whey protein doesn't adequately support connective tissue, and why collagen supplementation has gained scientific attention for joint health and injury prevention.
The strongest evidence supports collagen supplementation for tendon health. A landmark study by Keith Baar's research group showed that 15g of hydrolysed collagen taken with vitamin C 60 minutes before exercise significantly increased collagen synthesis in tendons. This is particularly relevant for athletes recovering from tendinopathies (patellar, Achilles, shoulder) and those engaging in high-impact training that stresses connective tissue.
For joint health, collagen peptides (hydrolysed collagen) provide building blocks for cartilage repair and have shown promising results in studies of exercise-induced joint pain. Some research suggests collagen supplementation reduces joint discomfort during physical activity in both athletes and recreational exercisers. Dosing: 10-15g of hydrolysed collagen peptides daily, ideally 30-60 minutes before training with vitamin C (which is essential as a cofactor for collagen synthesis). Quality sources in Australia include Vital Proteins, ATP Science Noway Collagen, and Great Lakes Gelatin. Note: collagen is not a complete protein - it lacks tryptophan - so it cannot replace other protein sources.