From simple beeps to complex sounds: Custom-designed sounds improve shuttle run test performance and perceived enjoyment.

This study evaluated whether custom-designed sounds enhance participants' performance and improve affective responses during the 20-meter shuttle run test (SRT) when compared to the traditional beep sound. Twenty-three individuals (24.8 ± 4.5 years) completed three SRTs on separate test days in a randomised, counterbalanced order. During the SRTs, participants were guided either by the traditional beep sound (stimulus A) or by two different customised sounds (stimuli B, and C). The total distance covered, peak heart rate, perceived exertion, attentional focus, and enjoyment were compared between the SRTs. A significant main effect was observed for the total distance covered during the SRT (p = .004), with greater distances covered during stimulus B compared to stimulus A (p = .001). A main effect was found for peak heart rate (p = .012), with higher heart rates observed for stimulus B than for stimulus A (p = .032). No significant effect was found for rating of perceived exertion (p = .665). For attentional focus, a main effect of condition emerged (p = .023) without significant differences between stimuli. Perceived enjoyment showed a main effect (p < .001), with greater enjoyment for stimulus B than A (p = .002) and C than A (p = .010). Custom-designed sounds enhanced performance, effort investment, and enjoyment, potentially improving SRT validity and perceptions of exercise testing.