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Table 6 Muscle Creatine Levels

From: A buffered form of creatine does not promote greater changes in muscle creatine content, body composition, or training adaptations than creatine monohydrate

Variable N Group Day   p-level
    0 7 28   
Cr (mmol/kg DW) 8 KA-L 65.8 ± 15.4 57.9 ± 16.1 70.5 ± 20.9 Group 0.74
  9 KA-H 57.3 ± 17.7 58.3 ± 15.6 66.3 ± 12.6 Time 0.03
  8 CrM 51.5 ± 12.7 62.8 ± 25.0 73.8 ± 15.6 G x T 0.46
Cr 8 KA-L 0.0 ± 0.0 −8.0 ± 22.3 4.71 ± 27.0 Group 0.14
(Δ mmol/kg DW) 9 KA-H 0.0 ± 0.0 1.03 ± 12.8 9.07 ± 23.2 Time 0.03
  8 CrM 0.0 ± 0.0 11.3 ± 23.9 22.3 ± 21.0 G x T 0.46
Cr (Δ %) 8 KA-L 0.0 ± 0.0 −6.4 ± 37.8 13.7 ± 42.2 Group 0.20
  9 KA-H 0.0 ± 0.0 6.2 ± 29.2 27.3 ± 49.1 Time 0.003
  8 CrM 0.0 ± 0.0 23.5 ± 49.0 50.4 ± 44.8 G x T 0.51
  1. Values are means ± standard deviations. Δ represents change from baseline values. Sufficient muscle samples were obtained to measure baseline and subsequent Cr on 25 participants. Missing day-7 data in participants with baseline and day-28 values were replaced using the last observed value method (n = 2). Data were analyzed by MANOVA with repeated measures. Greenhouse-Geisser time and group x time (G x T) interaction p-levels are reported with univariate group p-levels.