Does collagen help tendons?

The trial reconstructed: who, what, when, and what was measured

Does collagen help tendons is a question whose answer on every tub and forum rests on one small trial, and the honest page reconstructs that trial step by step, because a lifter who knows exactly what was done and measured knows exactly what the word help means and can decide for themselves whether it is worth 28p or a scoop. Who: a handful of healthy young adults, fewer than a dozen, in a crossover design in which each participant took every condition on different occasions, so that each was their own control, a strong design for a small group and a small group nonetheless. What: around fifteen grams of gelatin dissolved in a drink, or five grams, or a placebo, each with roughly 50mg of vitamin C, the vitamin C there deliberately because it is the cofactor for the enzymes that hydroxylate collagen and the trial's authors wanted the synthesis machinery supplied. When: an hour before six minutes of skipping, the timing chosen because the small peptides from digested gelatin peak in the blood within an hour or two of a dose and the skipping, a rhythmic load on the Achilles and patellar tendons, was meant to tell the tendons to use what was arriving, the whole idea of the protocol being that substrate and signal should be in the blood when the load asks for them. Measured, first: a blood marker of collagen synthesis, the N-terminal propeptide of type I procollagen, which rises when the body is making type I collagen anywhere, and it roughly doubled after the fifteen-gram dose against placebo in the hours after the skipping, with the five-gram dose producing a smaller rise. Measured, second: the participants' blood serum, drawn after each dose, was used to grow engineered ligaments in the laboratory, and the ligaments grown in post-gelatin serum came out stiffer and richer in collagen than those grown in post-placebo serum, a demonstration that something in the blood after a gelatin dose made ligament-forming cells build better matrix in a dish. Not measured: tendon pain, tendon structure on ultrasound or MRI, tendon stiffness in the leg, injury, recovery from injury, return to sport, or anything a lifter would notice in their own body, because the trial was a mechanism study and not a treatment trial, and it never claimed otherwise.

What the reconstruction tells a lifter, the one trial added since, and marine on the same evidence

The reconstruction tells a lifter three things the tub does not. First, that help meant a synthesis marker doubling in the blood of a handful of people for a few hours and a dish of engineered ligaments stiffening, which is a real physiological effect and the honest basis for the pre-loading protocol, and which is not a healed tendon, a less painful tendon or a faster return, none of which the trial measured. Second, that the protocol's terms come from the trial's design and not from the shelf: fifteen grams, not a capsule; gelatin or hydrolysed collagen, the trial having used gelatin; with vitamin C, the cofactor; an hour before loading, not at breakfast or bedtime, because the whole mechanism depends on the timing. Third, that the participants were healthy and uninjured, so the trial says nothing directly about a painful or torn tendon, and the protocol's use in rehabilitation is an extrapolation from mechanism, which is a reasonable thing for a physiotherapist to try beside a programme and not a proven treatment. One trial has been added since and it deserves the same exactness: around twenty people with chronic Achilles tendinopathy were randomised to 2.5 grams a day of specific collagen peptides or placebo, both groups doing a six-month calf-strengthening programme, and the collagen group improved more on a validated Achilles function and pain score and returned to running sooner, a small, manufacturer-funded result obtained beside the loading that is the established treatment, the one collagen tendon trial with a clinical outcome, at a dose a sixth of the protocol's and untimed, so that the two collagen approaches to tendons have never been compared. Put together, collagen helps tendons in exactly this sense: a marker and a dish in a handful of healthy people, and one small trial of modest benefit beside exercise in twenty patients, no claim, and the loading programme doing the work in every setting. The secondary searches, marine collagen for tendons and is marine collagen good for tendons, have the same answer, because the marker trial used gelatin, a mammalian product, the Achilles trial used mammalian peptides, and marine hydrolysate is the same type 1 collagen from a fish producing the same small peptides in blood, so marine is good for tendons on the same evidence and no more, chosen over bovine by allergy, diet, faith and the tub's testing file rather than by any tendon result. The worked example is the marine hydrolysate on that evidence: 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, near the Achilles trial's 2.5 grams and well below the protocol's fifteen, taken for vitamin C's collagen formation sentence beside the programme, while the protocol lifter buys the grams as gelatin or powder for the hour before the session. Does collagen help tendons: in the size of a doubled marker and a stiffer dish, plus one small trial beside calf raises, and no larger.

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