Plant protein is supposed to lose to whey, but a 2013 trial in trained men found otherwise at a big dose. In 24 resistance-trained males, 48 g of rice protein isolate after training produced the same gains in lean mass, muscle thickness, strength, and power as 48 g of whey over eight weeks. Why did rice keep up? The large dose may have closed the leucine gap. Here is what the study showed, where its limits lie, and how vegans and dairy-intolerant lifters can use it.
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