Revista brasileira de psiquiatria (Sao Paulo, Brazil : 1999) · 2024
Effect of home-based transcranial direct current stimulation combined with nutritional counseling therapy on binge eating disorder symptoms: a randomized pilot trial.
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Elkfury Jessica Lorenzzi, Antunes Luciana C, Tocchetto Betina Franceschini, Menegassi Lizia Nardi, Sanches Paulo, Pereira Danton, Medeiros Liciane Fernandes, Cardinal Tiago M, Torres Iraci L S, Fregni Felipe, Caumo Wolnei
Аннотация
OBJECTIVE: To examine the effect of nutritional counseling therapy (NCT) combined with transcranial direct current stimulation (tDCS) on binge eating disorder (BED) symptoms.
METHODS: Forty women with BED were randomly allocated (2:2:2 ratio) to one of the following groups: active tDCS (a-tDCS), NCT, sham tDCS (s-tDCS) with NCT, and a-tDCS with NCT. Home-based tDCS was applied to the dorsolateral prefrontal cortex for 28 sessions.
RESULTS: A mixed analysis of variance (ANOVA) showed no main effect between groups nor a time × group interaction. However, a significant main effect was found for time on the primary outcome Binge Eating Scale (BES) (p = 0.001; eta2p = 0.325), which tended to decrease during treatment and follow-up. A significant main effect was found for the secondary outcome short-interval intracortical inhibition (SICI) (p = 0.02; eta2p = 0.112), a measure of inhibitory function, which increased from baseline to the final period in the a-tDCS group, without significant differences between groups.
CONCLUSION: Combined NCT and tDCS did not have a synergistic effect on BED symptoms. Nevertheless, the data from this pilot study should help plan future larger-scale studies investigating the effects of tDCS and behavioral interventions in the promising area of BED treatment.
METHODS: Forty women with BED were randomly allocated (2:2:2 ratio) to one of the following groups: active tDCS (a-tDCS), NCT, sham tDCS (s-tDCS) with NCT, and a-tDCS with NCT. Home-based tDCS was applied to the dorsolateral prefrontal cortex for 28 sessions.
RESULTS: A mixed analysis of variance (ANOVA) showed no main effect between groups nor a time × group interaction. However, a significant main effect was found for time on the primary outcome Binge Eating Scale (BES) (p = 0.001; eta2p = 0.325), which tended to decrease during treatment and follow-up. A significant main effect was found for the secondary outcome short-interval intracortical inhibition (SICI) (p = 0.02; eta2p = 0.112), a measure of inhibitory function, which increased from baseline to the final period in the a-tDCS group, without significant differences between groups.
CONCLUSION: Combined NCT and tDCS did not have a synergistic effect on BED symptoms. Nevertheless, the data from this pilot study should help plan future larger-scale studies investigating the effects of tDCS and behavioral interventions in the promising area of BED treatment.