Vigorous-intensity acute exercise during encoding can reduce levels of episodic and false memory

Area of Science:

• Cognitive Neuroscience
• Exercise Physiology

Background:

• The impact of acute exercise on memory, considering both benefits and costs like false memories, remains incompletely understood.
• Specific timing and intensity of exercise interventions require further investigation regarding their effects on memory.

Purpose of the Study:

• To investigate how the timing (before vs. during encoding) and intensity of acute exercise affect veridical and false memory.
• To examine the influence of vigorous-intensity exercise during memory encoding on immediate and delayed recall.

Main Methods:

• Experiment 1: Within-subjects design with three conditions (exercise before encoding, exercise during encoding, control). Assessed immediate and delayed free recall.
• Experiment 2: Expanded exercise conditions (including light-intensity) and used a recognition task with a 24-hour memory assessment.

Main Results:

• Vigorous exercise during encoding impaired veridical memory compared to exercise before encoding or a control condition.
• Vigorous-intensity exercise during encoding in Experiment 2 reduced both veridical and false memories for related items.

Conclusions:

• The timing and intensity of acute exercise critically influence memory performance.
• Vigorous exercise during the memory encoding phase can negatively impact both accurate recall and susceptibility to false memories.