Fig. 2

Forest plot of menthol mouth rinsing studies included in this meta-analysis. Positive values indicate a capacity and performance enhancement of MEN MR versus control condition. Titles on the left side refer to ‘Author (reference number); unique ID assigned to each included outcome’. The reason for missing IDs (i.e. 8, 15, 16, and 19) is the exclusion of some of the outcomes in a phase posterior to unique ID assignment