A decreasing trend of slow-twitch Type I fiber CSA and an increasing trend of fast-twitch Type IIb and Type IIx fiber CSAs were observed in rats in the HFL diet and WT + Lys diet group when compared to the WT group, while only statistically significant for the HFL2 diet (Type I fiber only) or WT + 40% Lys diet group (Fig. 4 B, D, and E).
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