Mixing 30 g of whey with 10 g of collagen beat whey alone, collagen alone and placebo on every outcome in a new 8-week trial of resistance-trained men. The stack added 2.66 kg of muscle (by BIA), lifted lumbar spine BMD and improved squat, bench and bone turnover markers. Collagen alone moved bone, and whey alone moved muscle. But with only 40 participants, unmatched protein totals and a surprisingly big BMD jump, there is a catch. Here is what the stack won, who it may suit and who should skip it.
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