Purpose: The present study investigated whether stress and ventilator ytraining (VT) have different effects on psychophysiological responses according to the magnitude of the stress response.BR Method: Participants were twenty-three college students with a high-tsress response and twenty-three with a low-stress response. Psychological tests (depression, axniety, stress response, and resilience), heart rate variability (SDNN, RMSSD, total power, LF, HF, and LF/HF ratio), and visual analogue scale (anxiety, stress, confidence, and relaxation) were measured at rest, after cognitive stress, and after ventilatory training.BR Results: High-stress group showed higher depression, trait, state anxiety, and lower resilience compared to the low-stress group. The high-stress group showed higher VAS anxiety and stress, and lower relaxation and self-confidence scores. Computational task increaseds tress and decreased heart rate and RMSSD. VT not only lowered anxiety and stress, increased relaxation and confidence, but also increased SDNN, RMSSD, total power, and LF. However, there was no significant d ifference between the stress response groups in all variables before and after the stress task and ventilatory training.BR Conclusion: VT seems to be an effective way to restore the balance of th aeutonomic nervous system caused by stress.