The purpose of this study was to analyze the psychophysiological responses (anxiety, cortisol, heart rate, skin conductance) to acute psychological stress during a visualization of competition, under the influence of pressure for perfection exerted by parents, and pressure for perfection exercised by the coach. Artistic gymnasts (3 men and 3 women) with an age range of 13 to 15 years participated, who were present in four sessions for data collection that included salivary cortisol, heart rate and skin conductance. The first session was the baseline, where we apply a booklet of questionnaires that inquire about competitive anxiety and pressure for perfection. The remaining three sessions included guided viewing; session two to create mental images and live the gymnastic competition; the third highlights the pressure for perfection created by the coach (PPE); and the fourth highlights the pressure for perfection created by parents (PPP). The results showed that the visualization of competitive situation causes stress and anxiety, although the increase in salivary cortisol was within the normal daytime level. The physiological changes were greater in those gymnasts who perceived high PPE and PPP. However, for some gymnasts the situation was considered threatening (decrease in skin conductance, and small increases in heart rate), and for others was challenging (increase in skin conductance and heart rate). In conclusion, the pressure for perfection integrates a link for the different physiological responses in competition.