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Ryan S Falck1,2,3,4, Ryan G Stein1,2,4, Rachel A Crockett2,4,5

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Resistance training (RT) significantly improved cognitive function in adults with subcortical ischaemic vascular cognitive impairment (SIVCI) who had poor sleep duration or efficiency. This highlights sleep

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Area of Science:

  • Neurology
  • Exercise Science
  • Sleep Medicine

Background:

  • Subcortical ischaemic vascular cognitive impairment (SIVCI) is the most prevalent form of vascular cognitive impairment.
  • Resistance training (RT) shows potential for enhancing cognitive function in individuals with SIVCI.
  • Sleep quality and duration may influence the efficacy of exercise interventions on cognitive health.

Purpose of the Study:

  • To investigate whether sleep characteristics moderate the impact of resistance training (RT) on cognitive function in adults with SIVCI.
  • To analyze the effects of RT versus balance and tone (BAT) exercises on cognitive performance based on baseline sleep parameters.

Main Methods:

  • A 12-month randomized controlled trial (RCT) involving community-dwelling adults (aged 55+) with SIVCI.
  • Participants were assigned to either progressive RT or BAT exercises, both twice-weekly.
  • Baseline sleep (duration, efficiency via actigraphy; quality via PSQI) and cognitive function (ADAS-Cog 13) were assessed; moderation analysis was performed.

Main Results:

  • RT participants with poor baseline sleep duration showed significantly better cognitive function (ADAS-Cog 13) compared to BAT participants with poor sleep duration.
  • Similarly, RT participants with poor baseline sleep efficiency demonstrated improved cognitive function versus BAT participants with poor sleep efficiency.
  • No significant cognitive benefits of RT were observed in participants with good sleep duration or efficiency; self-reported sleep quality did not moderate effects.

Conclusions:

  • Resistance training (RT) offers particular cognitive benefits for adults with SIVCI experiencing poor sleep.
  • Sleep status is a critical factor influencing the effectiveness of RT interventions for cognitive enhancement in SIVCI.