Table 1 Daily urinary creatine (Cr) excretion and retention     D

7 ± 11.1 and 30.6 ± 9.9 grams for P + CrM and RT + CrM, respectively. Table 1 Daily urinary creatine (Cr) excretion and retention     Day     Variable

Group 0 1 2 3 4 5   p-level Urinary Cr Excreted (g∙day-1) P + CrM 0.3 ± 0.4 1.9 ± 1.60 3.5 ± 2.300 4.7 ± 3.3000 3.2 ± 2.800 5.0 ± 3.4000 Time 0.001 RT + CrM 0.5 ± 0.6 1.7 ± 1.10 3.4 ± 2.700 4.2 ± 3.3000 4.6 ± 2.200 5.4 ± 3.2000 Group 0.801 Combined #GDC 0032 molecular weight randurls[1|1|,|CHEM1|]# 0.4 ± 0.5 1.8 ± 1.4* 3.5 ± 2.4*† 4.4 ± 3.2*†‡ 3.9 ± 2.6*† 5.2 ± 3.2*†‡ GxT 0.59 Whole body Cr Retention (g∙day-1) P + CrM 0.0 ± 0.0 8.1 ± 1.60 6.5 ± 2.300 5.3 ± 3.3000 6.8 ± 2.800 5.0 ± 3.4000 Time 0.001 RT + CrM 0.0 ± 0.0 8.3 ± 1.10 6.6 ± 2.700 5.8 ± 3.3000 5.4 ± 2.200 4.6 ± 3.2000 Group 0.82 Combined 0.0 ± 0.0 8.2 ± 1.4* 6.5 ± 2.4*† 5.6 ± 3.2*†‡ 6.1 ± 2.6*† 4.8 ± 3.2*†‡ GxT 0.59 (n = 10). Values are means ± standard deviations. (n = 10) Greenhouse-Geisser time and group x time (G x T) interaction p-levels are reported with univariate group p-levels. *Significantly different Epacadostat manufacturer than Day 0. †Significantly different than Day 1. ‡Significantly different than Day 2. Muscle creatine analysis Table 2 presents muscle free Cr content data. Sufficient muscle samples were obtained to measure baseline and subsequent creatine on all (n = 10) participants. A MANOVA was run on muscle Cr expressed in mmol · kg-1 DW,

changes from baseline expressed in mmol · kg-1 DW and percent changes from baseline. An overall MANOVA time effect (Wilks’ Lambda p = 0.03) was observed with no significant overall group Y-27632 2HCl × time interactions (Wilks’

Lambda p = 0.34). MANOVA univariate analysis revealed significant time effects in muscle free Cr content expressed in absolute terms (p = 0.019), changes from baseline (p = 0.019), and percent changes from baseline (p = 0.006), in which post hoc analysis revealed a significant increase in muscle free Cr content by day 5. No significant differences were observed between groups. Table 2 Muscle free creatine (Cr) levels Variable Group 0 Day 3 5   p-level Cr (mmol∙kg-1 DW) P + CrM 72.1 ± 26.0 81.2 ± 26.0 94.9 ± 40.5 Time 0.019 RT + CrM 103.0 ± 21.1 103.2 ± 27.2 111.0 ± 19.0 Group 0.049 Combined 87.5 ± 28.0 92.3 ± 28.2 102.9 ± 31.9* GxT 0.34 Cr (Δ mmol∙kg-1 DW) P + CrM 0.0 ± 0.0 9.3 ± 14.3 22.8 ± 28.2 Time 0.019 RT + CrM 0.0 ± 0.0 0.3 ± 18.4 8.1 ± 16.2 Group 0.097   0.0 ± 0.0 4.8 ± 16.7 15.5 ± 23.6* GxT 0.34 Cr (Δ%) P + CrM 0.0 ± 0.0 21.1 ± 30.0 37.3 ± 41.7 Time 0.008 RT + CrM 0.0 ± 0.0 0.7 ± 20.5 9.6 ± 18.1 Group 0.035 Combined 0.0 ± 0.0 10.9 ± 27.1 23.5 ± 34.4* GxT 0.13 (n = 10).

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