Is collagen good for athletes?

The performance ledger and the connective tissue ledger

Is collagen good for athletes is best answered the way an athlete already thinks, in ledgers, because good for an athlete means good for one of four things and collagen's entries differ by ledger. The performance ledger first, since it is the one most readers mean: strength, power, sprint times, endurance and time to fatigue. Collagen has no entry here. No trial has shown hydrolysed collagen improving a performance measure, no claim exists for it, and the consensus statement on supplements in high-performance sport lists the small group with good performance evidence as caffeine, creatine, nitrate, beta-alanine and bicarbonate, placing collagen and gelatin in the emerging group where the evidence is preliminary and mechanism-based, so an athlete who wants a performance entry buys creatine at three to five grams a day and leaves collagen off that page. The connective tissue ledger second, and here collagen has its most interesting entry: a small crossover trial gave around fifteen grams of gelatin with roughly 50mg of vitamin C an hour before six minutes of skipping, and the blood marker of collagen synthesis roughly doubled against placebo, while engineered ligaments grown in the participants' serum were stiffer and richer in collagen, the study that became the tendon pre-loading protocol used in rehabilitation settings for Achilles and patellar tendinopathy alongside the loading programme that does the actual work. The entry is honest only with its limits attached: a marker, not an injury outcome; a handful of participants; a protocol built around the timing of the dose and the loading, an hour before, which is why the athlete who uses it takes the collagen with vitamin C before the tendon session and not at breakfast. The vitamin C is not decorative, since it is the cofactor for the enzymes that cross-link collagen and it holds the register's collagen formation sentence, the only collagen sentence a UK label may carry, and collagen itself holds no claim in this ledger or any other.

The joint comfort ledger, the protein ledger, and the ledgers totalled

The joint comfort ledger third: around ten grams of hydrolysed collagen a day for twelve to twenty-four weeks reduced activity-related joint discomfort in a small number of trials, one of them in athletes with exercise-related knee pain, with effects that were real on the trial scales, modest in size, and produced by trials that were mostly industry-funded and of a size that leaves the meta-analyses hedged. An athlete with a knee that complains after volume has an entry here as research, at ten grams over months, with no claim behind it and with the more useful entries being load management, the rehabilitation of whatever is complaining, and time. The protein ledger fourth, and here collagen's entry is negative, which is the finding most athletes miss: collagen is protein by the nitrogen test that puts it on the label, and it is protein of the wrong shape for muscle, lacking tryptophan entirely, scoring near zero on the completeness scale the food regulators use, and carrying around a third of the leucine per gram that whey does, leucine being the amino acid that triggers muscle protein synthesis. An athlete eating 1.6 grams per kilo to hold or build muscle, the sports nutrition target, cannot count a twenty-gram collagen scoop toward it, since the body cannot build muscle protein from a source missing an essential amino acid, and the honest ledger books collagen as connective tissue protein and reaches the 1.6 grams with whey, dairy, meat, fish, eggs, soya and the complete plant blends, the whey versus collagen comparison being the page that shows the difference in muscle synthesis trials. The ledgers totalled: performance, no entry; connective tissue, an entry as research at fifteen grams with vitamin C before loading; joint comfort, an entry as research at ten grams over months; protein, a negative entry that changes nothing about the other two but stops the scoop being double-counted. The worked example on its true terms is two capsules, 1200mg hydrolysed type 1 marine collagen with 12mg vitamin C plus zinc, 120 for £16.99 at 28p a day, lab tested and UK made, a dose below the research band that carries the vitamin C line and suits the athlete who wants the habit and the vitamin C sentence, while the tendon protocol athlete buys the fifteen grams as gelatin or powder and takes the capsules on the other days if at all. Good for athletes: yes in two ledgers as research, no in two, and never for performance.

What to check on the label