Supplementary file 1_“I know it’s not good, but you want to perform at 100%”: cognitive-affective responses to ecological sustainability and performance in sport competitions.docx

Data were analyzed using structured deductive qualitative content analysis.</p>Results<p>Athletes expressed strong pro-environmental attitudes but experienced a pronounced and recurring value-action gap driven by structural constraints such as competition schedules, travel demands, and sponsorship obligations. Ecological sustainability-related cognition and affect (e.g., guilt, frustration, sadness) were salient across sports but were actively regulated, suppressed, or compartmentalized in performance contexts to maintain focus and competitive readiness.

While athletes rarely reported immediate performance impairments, sustainability-related concerns contributed to indirect performance-relevant strain through travel fatigue, disrupted preparation, and cumulative mental load affecting recovery and well-being. Engagement in sustainability initiatives emerged as a central coping strategy and was often experienced as empowering; sport itself served as an important coping context.</p>Discussion<p>Overall, ecological sustainability functioned both as a psychological burden and a motivational resource in competitive sport.

While athletes expressed strong motivation to engage with sustainability, their ability to act consistently with these values was often constrained by both the structures of competitive sport and individual decisions.</p>