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Abstract
Background: Physical activity may be associated with better cognition.
Objective: To investigate whether change in duration and intensity of physical activity is associated with 10-year cognitive decline in elderly men.
Methods: Data of 295 healthy survivors, born between 1900 and 1920, from the Finland, Italy, and the Netherlands Elderly (FINE) Study were used. From 1990 onward, physical activity was measured with a validated questionnaire for retired men and cognitive functioning with the Mini-Mental State Examination (maximum score 30 points).
Results: The rates of cognitive decline did not differ among men with a high or low duration of activity at baseline. However, a decrease in activity duration of >60 min/day over 10 years resulted in a decline of 1.7 points (p < 0.0001). This decline was 2.6 times stronger than the decline of men who maintained their activity duration (p = 0.06). Men in the lowest intensity quartile at baseline had a 1.8 (p = 0.07) to 3.5 (p = 0.004) times stronger 10-year cognitive decline than those in the other quartiles. A decrease in intensity of physical activity of at least half a standard deviation was associated with a 3.6 times stronger decline than maintaining the level of intensity (p = 0.003).
Conclusions: Even in old age, participation in activities with at least a medium-low intensity may postpone cognitive decline. Moreover, a decrease in duration or intensity of physical activity results in a stronger cognitive decline than maintaining duration or intensity.
- Received February 10, 2004.
- Accepted in final form August 2, 2004.
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