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Abstract
The purpose of this experiment was to examine how the predictability of word presentation while walking on a treadmill influences episodic memory and gait. We hypothesized that encoding while walking would benefit free-recall and recognition memory, and that synchronized presentation would lead to less variable walking. Using a within-subjects design, 21 adults completed three sessions where they walked on a treadmill and listened to a 40-item word list, which was presented twice. In one session, a word was presented every fourth step; in another session, a word was presented on a random step; in another session, words were presented while standing. Free-recall was assessed immediately after the second trial, a 10 min delay, and 24 hours. Recognition was assessed after the 10 min delay and 24 hours. Walking during predictable word presentation led to enhanced free-recall memory (p= .044), compared to unpredictable word presentation, or standing control; no impact was seen on recognition memory. Predictable word presentation also results in more stable walking patterns.