Harnessing Stress: How Physical Discomfort Elevates Your Sense Of Dominance

The ability to tolerate physical stress is crucial in modern society, with evidence suggesting that impulse control aids in sustaining effort under discomfort. While physical exercise can strengthen inhibitory control, it remains unclear if high exercise tolerance enhances control under stress. PURPOSE: To explore the relationship between subjective exercise tolerance and psychophysiological reactivity to physical stress using the cold pressor test. METHODS: Thirty-six participants were categorized into High-Tolerant (HT; n = 20) and Low-Tolerant (LT; n = 16) groups based on subjective exercise tolerance profiles (MHT = 28.9 ± 2.76; MLT = 20.8 ± 1.91; p < .001). Participants immersed their nondominant hand in cold water (3-5 °C) for 1-3 minutes, unaware of the required duration. Psychophysiological reactivity was monitored via heart rate variability, and psychological states were assessed pre- and post-test. Task performance, characteristics, and psychophysiological responses were compared using t-tests and RM-ANOVA, with Pearson’s correlation analyzing relationships between responses and performance. RESULTS: HT endured discomfort longer (MHT = 176.7 ± 10.0; MLT = 123.5 ± 52.7; ∆ = 50s; p = .001). An interaction effect was observed for dominance (F[1, 32] = 5.879, p = .021, η2p = .155); HT showed higher initial levels (MHT = 6.1 ± 2.2; MLT = 4.0 ± 2.4; ∆ = 1.7 a.u., p = .039), while LT improved post-test (Pre = 4.0 ± 2.4; Post = 7.0 ± 1.3; ∆ = -2.7 a.u.; p = .004). Both groups reported more positive affect post-task (F[1, 32] = 10.341, p = .003, η2p = .244; Pre = 3.4 ± 1.5; Post = 5.1 ± 2.5; ∆ = 1.6 a.u.), possibly due to self-accomplishment. A psychophysiological rebound, marked by increased parasympathetic activity (RMSSD: F[1, 34] = 7.198, p = .011, η2p = .175; Pre = 33.9 ± 19.9; Post = 45.9 ± 26.7; ∆ = 11.6 ms), was observed in both groups. Perceived dominance and activation positively correlated with performance (r = .419, p = .012; r = .399, p = .017). CONCLUSION: Early dominance perceptions may predict better performance under physical stress. Physical stress can enhance perceived dominance in LT, potentially benefiting inhibitory control, linking exercise tolerance, dominance perception, and psychophysiological reactivity during stress.