Fig. 7
Effect sizes of the changes in measures of corticospinal excitability in young and older individuals ordered by age group and number of training sessions. Open symbols: p > 0.05. Filled symbols: p < 0.05. N.A. indicates data necessary to calculate effect sizes were not available. The subgroup analysis was not significant for the corticospinal excitability measures and only included 6 studies; we therefore performed a systematic synthesis of the adaptations in corticospinal excitability in response to balance training in all available studies. Note how the increase in the number of balance training sessions is accompanied by inconsistent changes in the effect sizes