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Guspa, A.; Haru Pradani, W.; Zakinov Irta, A.; Akbar, A. Article RETRACTED Due to Malpractice When the Audience Matters: A Systematic Review of Spectator Influence on Sports Performance. Retos 2025, 70, 921-930. https://doi.org/10.47197/retos.v70.116288.