Table 2.
Salivary concentration of TEAC (Trolox-equivalent antioxidant capacity, μmol eq. Trolox/mg protein), reduced glutathione (GSH, μM), oxidized glutathione (GSSG, μM), reducing power (A.U.), and total protein (mg/mL) in the elderly individuals from the NP and CET groups before (Pre) and after 30 days (Post) of daily supplementation with placebo or L-glutamine. Data were statistically analyzed using the Two-way repeated measures ANOVA test and were presented as mean and standard deviation (SD) with a risk value of 5% (p < 0.05).
| Groups | Nonpractitioners (NP, n = 34) | Combined-exercise training (CET, n = 49) | ||||||
|---|---|---|---|---|---|---|---|---|
| Placebo (n = 15) | L-glutamine (n = 19) | Placebo (n = 26) | L-glutamine (n = 23) | |||||
| Variables | Pre | Post | Pre | Post | Pre | Post | Pre | Post |
| TEAC (μmol eq. trolox/mg proteins) | 0.45 ± 0.09 | 0.42 ± 0.14 | 0.54 ± 0.09 | 0.51 ± 0.14 | 0.46 ± 0.08 | 0.51 ± 0.09 | 0.40 ± 0.05 | 0.35 ± 0.05 |
| GSH (μM) | 400.5 ± 83.67 | 389.1 ± 88.31 | 488.8 ± 66.84∗ | 309.1 ± 36.57 | 381.6 ± 43.46 | 345.0 ± 45.23 | 384.3 ± 59.38∗ | 242.6 ± 38.96 |
| GSSG (μM) | 65.8 ± 12.03∗ | 42.43 ± 9.42 | 49.26 ± 9.01 | 33.65 ± 5.56# | 86.04 ± 11.8∗ | 53.94 ± 7.78 | 57.18 ± 11.2 | 66.69 ± 11.1 |
| Reducing power (A.U.) | 0.71 ± 0.06 | 0.70 ± 0.07 | 0.74 ± 0.05 | 0.72 ± 0.05 | 0.68 ± 0.04 | 0.66 ± 0.04 | 0.77 ± 0.03 | 0.69 ± 0.04 |
| Total protein content (mg/mL) | 1.64 ± 0.42 | 1.61 ± 0.41 | 1.62 ± 0.37 | 1.49 ± 0.47 | 1.71 ± 0.33 | 1.59 ± 0.33 | 1.54 ± 0.38 | 1.72 ± 0.34 |
∗Significant differences in comparison to values obtained in the pre and postsupplementation period (p < 0.05). #Significant differences in comparison to values obtained in the nonpractitioners and combined-exercise training groups (p < 0.05).