FIGURE 5.

Myofibrillar FSR calculated using the plasma L-[ring-²H₅]-phenylalanine precursor pool during the postabsorptive (fasted) and postprandial (fed) period (A) and Δ FSR change from postabsorptive to postprandial state (B) for MYCO, SPIR, and CHLO conditions in rested and exercised (unilateral-resistance leg exercise) muscle in healthy young adults. The postprandial state represents the 4-h period following the ingestion of 25 g protein from mycoprotein (MYCO; n = 12), spirulina (SPIR; n = 12), or chlorella (CHLO; n = 12) and execution of a bout of unilateral-resistance leg exercise. Values are mean ± SD. Data were analyzed with three-way (time × group × exercise) ANOVA (P = 0.96). The Δ FSR data were analyzed with two-way (group × exercise) ANOVA (P = 0.96). ∗Significant difference between fasted and fed conditions (main effect of time; P < 0.001). #Significant difference between resting and exercised muscle in fed conditions (time × exercise interaction; P < 0.001). CHLO, chlorella; FSR, fractional synthetic rate; MYCO, mycoprotein; SPIR, spirulina.