Performance and Psychophysiological Effects of Light-Guided Pacing During a 5000-m Run.

Casado, Arturo; Hornillos, Alberto; Foster, Carl; Ranieri, Luis E.; Renfree, Andrew; Domínguez, Raúl

Purpose: In world-class middle- and long-distance running races, a Wavelight signal has recently been used as a pacing guide for setting records. The aim of the present study was to compare performance and psychophysiological effects between light-guided, drafting, and nonassisted pacing conditions in distance runners. Methods: Fifteen male middle- and long-distance runners of national and regional standard ran three 5000-m time trials in a counterbalanced order with the following pacing distribution: the first 4000 m and last 1000 m were covered at submaximal and maximal intensities, respectively. The 3 trials (conditions) were (1) self-paced, (2) guided by a light signal, and (3) guided by a cyclist in front (drafting condition). Pace, heart rate, rating of perceived exertion, and affective valence were recorded every 500 m. Results: No statistically significant differences were found between pacing-light and self-paced conditions. Running time was shorter in the drafting versus self-paced condition in the final 500-m section (P =.031; d = 0.76). No differences were found between drafting and light conditions. Similarly, whereas 9 out of 10 significant differences in terms of lower heart rate, or rating of perceived exertion, or higher affective valence responses were found in the drafting versus self-paced condition (P =.004–.041; d = 0.63–1.39), only 4 were found across the tests in the drafting versus light condition (P =.005–.016; d = 0.66–0.84). Conclusion: Light-guided pacing did not influence performance or psychophysiological responses in distance runners during a 5000-m test, but drafting produced a large effect.

International Journal of Sports Physiology & Performance, 2025, Vol 20, Issue 1, p149

1555-0265

Academic Journal

10.1123/ijspp.2024-0202