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Dual-task performances can be improved in patients with dementia : A randomized controlled trial

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2010

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Zieschang, Tania
Oster, Peter
Hauer, Klaus

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Neurology. American Academy of Neurology. 2010, 74(24), pp. 1961-1968. ISSN 1356-6237. eISSN 1759-815X. Available under: doi: 10.1212/WNL.0b013e3181e39696

Zusammenfassung

Background: Deficits in attention-related cognitive performance measured as dual-task performance represent early markers of dementia and are associated with motor deficits and increased risk of falling. The purpose of this study was to examine the effect of a specific dual-task training in patients with mild to moderate dementia.

Methods: Sixty-one geriatric patients with confirmed dementia took part in a 12-week randomized, controlled trial. Subjects in the intervention group (IG) underwent dual-task–based exercise training. The control group (CG) performed unspecific low-intensity exercise. Motor performance (gait speed, cadence, stride length, stride time, single support) and cognitive performance (serial 2 forward calculation [S2], serial 3 backward calculation [S3]) were examined as single and dual tasks. Decrease in performance during dual tasks compared to single task expressed as motor, cognitive, and combined motor/cognitive dual-task cost (DTC) was calculated before and after intervention. Primary outcome was defined as DTC for gait speed under complex S3 conditions.

Results: Specific training significantly improved dual-task performance under complex S3 conditions compared to the CG (reduction of DTC: gait speed 21.7% IG, 2.6% CG, p < 0.001; other gait variables: 8.7% to 41.1% IG, −0.9% to 8.1% CG, p ≤ 0.001 to 0.056; combined motor/cognitive: 20.6% IG, 2.2% CG, p = 0.026). No significant effects were found under less challenging dual-task S2 conditions or for cognitive dual-task S3 performance.

Conclusions: The specific exercise program was effective to improve dual-task performance in patients with dementia.

Classification of evidence: This study provides Class II evidence that specific dual-task training improves dual-task performance during walking under complex S3 conditions in geriatric patients with mild to moderate dementia.

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ISO 690SCHWENK, Michael, Tania ZIESCHANG, Peter OSTER, Klaus HAUER, 2010. Dual-task performances can be improved in patients with dementia : A randomized controlled trial. In: Neurology. American Academy of Neurology. 2010, 74(24), pp. 1961-1968. ISSN 1356-6237. eISSN 1759-815X. Available under: doi: 10.1212/WNL.0b013e3181e39696
BibTex
@article{Schwenk2010-06-15Dualt-55596,
  year={2010},
  doi={10.1212/WNL.0b013e3181e39696},
  title={Dual-task performances can be improved in patients with dementia : A randomized controlled trial},
  number={24},
  volume={74},
  issn={1356-6237},
  journal={Neurology},
  pages={1961--1968},
  author={Schwenk, Michael and Zieschang, Tania and Oster, Peter and Hauer, Klaus}
}
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