Manipulation check A group by time (3 × 2)

Manipulation check A group by time (3 × 2) mixed-model ANOVA was conducted to determine whether inhibitors purchase quercetin supplements effected mean plasma quercetin levels in

the predicted manner. The results revealed a significant group by time interaction effect, F(2, 985) = 100.25, p < 0.001, η p 2 = 0.17. Although the groups did not differ in plasma quercetin levels at baseline, the conditions demonstrated increases in plasma Inhibitors,research,lifescience,medical quercetin in a dose–response manner, with Q-1000 plasma levels (mean = 678.51, SD = 520.95) being significantly higher post treatment than Q-500 levels (mean = 490.00, SD = 345.10), which were significantly higher than placebo levels (mean = 288.40, SD = 223.62). CNS Vital Signs Neurocognition Index A 3 × 2 mixed-model ANOVA was performed on mean NCI total scores. The results indicated a significant main effect for time, F(1, 938) = 46.89, p < 0.001, η 2 = 0.05, with NCI scores improving from baseline (mean = 96.26, SD = 16.24) Inhibitors,research,lifescience,medical to post treatment (mean = 99.72, SD = 18.94). The main effect for group (p = 0.48) and the interaction effect

(p = 0.82) were nonsignificant. Memory A 3 × 2 mixed-model ANOVA was performed on mean memory domain scores. No significant effects emerged from these analyses. Psychomotor speed A 3 Inhibitors,research,lifescience,medical × 2 mixed-model ANOVA performed on mean psychomotor speed domain scores revealed a significant main effect for time, F(1, Inhibitors,research,lifescience,medical 938) = 157.47, p < 0.001, η 2 = 0.14. Psychomotor speed scores significantly increased from baseline (mean = 164.34, SD = 28.44) to post treatment (mean = 170.72, SD = 27.27). However, the main effect for group (p = 0.54) and the interaction effect (p = 0.11) were nonsignificant. Reaction time A 3 × 2 mixed-model ANOVA conducted on mean reaction time domain scores indicated a significant main effect for time, F(1, 938) = 38.21, p < 0.001, η 2 = 0.04. The results revealed that

participants’ reaction time scores were slower at baseline (mean = 655.49, SD = 108.70) than at post treatment (mean = 637.25, SD = 100.68). The main Inhibitors,research,lifescience,medical effect for group (p = 0.91) and the interaction effect (p = 0.63) were nonsignificant. isothipendyl Attention A 3 × 2 mixed-model ANOVA was performed on mean attention domain scores. No significant effects emerged from these analyses. Cognitive flexibility A 3 × 2 mixed-model ANOVA conducted on cognitive flexibility domain scores indicated a significant main effect for time, F(1, 938) = 266.45, p < 0.001, η 2 = 0.22. Analyses indicated that cognitive flexibility scores significantly increased from baseline (mean = 39.38, SD = 18.86) to post treatment (mean = 46.11, SD = 17.14). However, the main effect for group (p = 0.24) and the interaction effect (p = 0.80) were nonsignificant. Older age population Previous animal research has suggested that quercetin treatment can reverse cognitive deficits in aged mice [Singh et al. 2003].

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