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Article Publish Status: FREE
Abstract Title:

Moderate-to-High Intensity Physical Exercise in Patients with Alzheimer's Disease: A Randomized Controlled Trial.

Abstract Source:

J Alzheimers Dis. 2015 Dec 10 ;50(2):443-53. PMID: 26682695

Abstract Author(s):

Kristine Hoffmann, Nanna A Sobol, Kristian S Frederiksen, Nina Beyer, Asmus Vogel, Karsten Vestergaard, Hans Brændgaard, Hanne Gottrup, Annette Lolk, Lene Wermuth, Søren Jacobsen, Lars P Laugesen, Robert G Gergelyffy, Peter Høgh, Eva Bjerregaard, Birgitte B Andersen, Volkert Siersma, Peter Johannsen, Carl W Cotman, Gunhild Waldemar, Steen G Hasselbalch

Article Affiliation:

Kristine Hoffmann

Abstract:

BACKGROUND: Studies of physical exercise in patients with Alzheimer's disease (AD) are few and results have been inconsistent.

OBJECTIVE: To assess the effects of a moderate-to-high intensity aerobic exercise program in patients with mild AD.

METHODS: In a randomized controlled trial, we recruited 200 patients with mild AD to a supervised exercise group (60-min sessions three times a week for 16 weeks) or to a control group. Primary outcome was changed from baseline in cognitive performance estimated by Symbol Digit Modalities Test (SDMT) in the intention-to-treat (ITT) group. Secondary outcomes included changes in quality of life, ability to perform activities of daily living, and in neuropsychiatric and depressive symptoms.

RESULTS: The ITT analysis showed no significant differences between intervention and control groups in change from baseline of SDMT, other cognitive tests, quality of life, or activities of daily living. The change from baseline in Neuropsychiatric Inventory differed significantly in favor of the intervention group (mean: -3.5, 95% confidence interval (CI) -5.8 to -1.3, p = 0.002). In subjects who adhered to the protocol, we found a significant effect on change from baseline in SDMT as compared with the control group (mean: 4.2, 95% CI 0.5 to 7.9, p = 0.028), suggesting a dose-response relationship between exercise and cognition.

CONCLUSIONS: This is the first randomized controlled trial with supervised moderate-to-high intensity exercise in patients with mild AD. Exercise reduced neuropsychiatric symptoms in patients with mild AD, with possible additional benefits of preserved cognition in a subgroup of patients exercising with high attendance and intensity.

Study Type : Human Study

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Sayer Ji
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