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l-Arginine enhances cold-induced glucose oxidation in Europid men only. After supplementation with placebo and l-arginine, BMR (a, b), fat oxidation (d, e) and glucose oxidation (f, g) were assessed during thermoneutrality (white bars) and upon cold exposure (black bars) in Europid and South Asian men. Per cent NST (c) was calculated from the cold-induced increase in BMR after placebo (white bars) and l-arginine (black bars). Data are presented as mean ± SD. *p < 0.05 and **p < 0.01
