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BACKGROUND: Many foods rich in antioxidant and anti-inflammatory compounds have been shown to increase health and reduce markers of aging. A number of berry fruits high in polyphenols are known to ameliorate age-related declines in cellular, cognitive and behavioral function in rats.OBJECTIVES: This study evaluated the effectiveness of a red raspberry-supplemented diet on age-sensitive measures of learning, memory and motor performance in aged (19 mo) F344 rats.METHODS: Red raspberry extract was prepared from fresh whole fruit and incorporated in standard rodent chow to create a 2% diet. Following ten weeks on a control or 2% raspberry diet, cognitive and motor performance was assessed using the Morris Water Maze (MWM) and a battery of five psychomotor tasks.RESULTS: The supplemented diet significantly improved performance on three of the five motor tasks, but did not affect MWM performance. Specifically, old rats fed the 2% raspberry diet had significantly better performance on the rod and plank walks, which measure psychomotor coordination and balance, and on the inclined screen, which measures muscle tone, strength, stamina and balance.CONCLUSIONS: Given that falls are the number one health hazard for otherwise healthy older adults, these results may have important implications for increasing healthy aging.
Journal of Berry Research – IOS Press
Published: Jan 1, 2016
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