Brain training and sulforaphane intake interventions separately improve cognitive performance in healthy older adults, whereas a combination of these interventions does not have more beneficial effects: Evidence from a randomized controlled trial

Rui Nouchi, Qingqiang Hu, Toshiki Saito, Natasha Yuriko dos Santos Kawata, Haruka Nouchi, Ryuta Kawashima

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Background: Earlier studies have demonstrated that a single-domain intervention, such as a brain-training (BT) game alone and a sulforaphane (SFN) intake, positively affects cognition. This study examined whether a combined BT and SFN intake intervention has beneficial effects on cognitive function in older adults. Methods: In a 12-week double-blinded randomized control trial, 144 older adults were randomly assigned to one of four groups: BT with SFN (BT-S), BT with placebo (BT-P), active control game (AT) with SFN (AT-S), and active control game with placebo (AT-P).We used Brain Age in BT and Tetris in AT. Participants were asked to play BT or AT for 15 min a day for 12 weeks while taking a supplement (SFN or placebo). We measured several cognitive functions before and after the intervention period. Results: The BT (BT-S and BT-P) groups showed more improvement in processing speed than the active control groups (AT-S and AT-P). The SFN intake (BT-S and AT-S) groups recorded significant improvements in processing speed and working memory performance unlike the placebo intake groups (BT-P and AT-P). However, we did not find any evidence of the combined intervention’s beneficial effects on cognition. Discussion: We discussed a mechanism to improve cognitive functions in the BT and SFN alone interventions.

Original languageEnglish
Article number352
Pages (from-to)1-15
Number of pages15
JournalNutrients
Volume13
Issue number2
DOIs
Publication statusPublished - 2021 Feb

Keywords

  • Brain training
  • Cognitive training
  • Multidomain intervention
  • Nutrition
  • Sulforaphane

ASJC Scopus subject areas

  • Food Science
  • Nutrition and Dietetics

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