BACKGROUND: Pes planus (PP) is a common foot arch disorder. The present research was conducted to compare the effectiveness of Kinesio tape (KT) and dynamic tape (DT) in treating postural fluctuations during the pre-and post-fatigue phases in males with PP. METHODS: In this crossover study, 35 men with PP were recruited. The participants attended intervention sessions on three different days. At the onset of each session, one condition-either a session without taping (WT), KT use, or DT application-was randomly selected. Afterward, plantar pressure and postural fluctuations were recorded before and after fatigue under the chosen condition with pedoscan. The taping technique used was the modified low-dye tape (LDT) method. RESULTS: The study found that before fatigue, plantar pressure distribution increased significantly in the lateral areas and decreased in the medial areas with DT and KT compared to WT (p = 0.03). After fatigue, DT resulted in more lateral pressure and lower medial pressure than WT (both p = 0.035). Regarding the center of pressure (CoP), maximum posterior fluctuations decreased significantly after fatigue with DT compared to KT (p = 0.016). Additionally, there was a significant reduction in maximum lateral fluctuations post-fatigue with DT compared to KT (p <
0.002) and WT (p = 0.006). SIGNIFICANCE: According to the results, we recommend using DT with the LDT method to manage PP in men. Because only the short-term effects of DT were examined in this study, future research should inquire into the long-term effects of this intervention.