FIGURE 6.

Effects of 8 wk of EAAs + arginine supplementation on basal skeletal muscle concentrations of TCA intermediates (in nanograms per milligram); n = 6. Late-stage TCA intermediates malate and fumarate were increased after 8 wk of supplementation (dark-gray boxes) relative to initial concentrations (white boxes). Solid horizontal lines within the boxes represent the median values. **P < 0.01 (paired t test). CA, citrate; EAA, essential amino acid; FA, fumarate; iCA, isocitrate; MA, malate; OA, oxaloacetate; SA, succinate; TCA, tricaboxylic acid; αKG, α-ketoglutarate.