Grip strength, working memory, and emotion perception in middle-aged males.

Area of Science:

• Neuroscience
• Gerontology
• Exercise Physiology

Background:

• Middle-aged adults face potential declines in both physical and cognitive functions.
• Muscular fitness, particularly grip strength, is a key indicator of overall health.
• Emotional working memory plays a crucial role in daily emotional regulation and cognitive processing.

Purpose of the Study:

• To investigate the relationship between muscular fitness and emotional working memory performance.
• To explore how emotion and working memory load modulate this association in middle-aged males.

Main Methods:

• Cross-sectional study involving 76 middle-aged males (40-60 years).
• Grip strength assessed via maximum grip strength test.
• Emotional working memory evaluated using n-back tasks with fearful and neutral stimuli at 1-back and 2-back loads.

Main Results:

• Higher muscular fitness correlated with enhanced working memory performance under fearful conditions (both 1-back and 2-back tasks).
• Muscular fitness was associated with better working memory in neutral conditions only at high load (2-back task).
• These associations remained significant after controlling for potential confounding factors.

Conclusions:

• A positive association exists between muscular fitness and emotional working memory in middle-aged men.
• Maintaining muscular fitness may be crucial for preserving cognitive-emotional well-being in aging populations.
• These findings underscore the interconnectedness of physical health and cognitive function.