Raspberry differentially improves age-related declines in psychomotor function dependent on baseline motor ability.

Area of Science:

• Gerontology
• Nutritional Science
• Motor Control

Background:

• Falls are a major concern for older adults, leading to significant health issues and loss of independence.
• Previous research indicates berry supplementation can mitigate age-related motor function decline.
• Baseline motor performance influences the efficacy of interventions for age-related motor deficits.

Purpose of the Study:

• To investigate the interaction between baseline motor performance and raspberry intake levels on motor function in aging rats.
• To determine optimal raspberry consumption for improving or preserving balance, strength, and coordination in older individuals.

Main Methods:

• Aged male rats were assessed for baseline motor function (balance, strength, coordination) and categorized.
• Rats received diets with 0% (control), 1%, or 2% raspberry for 8 weeks.
• Post-intervention motor performance was re-evaluated, and serum inflammatory markers were analyzed.

Main Results:

• Poor motor performers showed improved composite scores with 1% or 2% raspberry intake.
• Good performers experienced a decline in composite scores with 2% raspberry intake.
• Raspberry supplementation preserved performance in good performers and improved plank walking and grip strength in poor performers.

Conclusions:

• Aging rats with poorer baseline motor function benefit most from daily raspberry consumption (1-2 cups equivalent).
• Raspberry intake may help preserve motor function in high-functioning older adults and improve it in those with deficits.
• Increased raspberry consumption shows potential for reducing fall risk and extending independence in the aging population.