Effects of stress beliefs on the emotional and biological response to acute psychosocial stress in healthy men
Johannes A. C. LafertonLea Maria BartschTamara MöschingerLisa BaldelliSophia FrickChristina J. BreitensteinRegula ZügerHubert AnnenSusanne Fischer
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Abstract:
Negative beliefs about stress (e.g., "stress is bad") constitute an independent risk factor for increased morbidity and mortality. One potential underlying mechanism are altered responses to acute psychosocial stress. The aim of this study was to investigate whether beliefs about stress are associated with physiological and endocrine stress response patterns.A total of N = 77 healthy adults were randomised to an experimental and a placebo control group and were subsequently exposed to the Trier Social Stress Test (TSST). Stress beliefs were measured before and after a psychological manipulation aiming at fostering more balanced stress beliefs or a placebo manipulation. Self-reported stress was measured four times before/after the TSST, heart rate was assessed continuously, and cortisol was assessed eight times before/after the TSST.There was a significant decrease in negative stress beliefs (p < .001) and increase in positive stress beliefs (p < .001) in participants in the experimental condition, which was absent in participants in the placebo condition. The participants in the experimental group had more pronounced self-reported stress reactions (p = .028) while at the same time also showing more pronounced stress recoveries (p = .036). The findings regarding cortisol were mixed.More balanced stress beliefs appeared to be associated with more efficient subjective responses to acute psychosocial stress. These findings attest to a potential mechanism translating negative stress beliefs into ill health while at the same time outlining targets for psychological interventions.Keywords:
Psychological stress
According to previous research, ambulance personnel often consider themselves as healthy, but at the same time several studies show that they suffer from several stress-related illnesses, take early retirement and even suffer early death. The aim of this study was to explore mental stress during the Trier Social Stress Test. Questions were whether heart rate measurement could replace cortisol concentration in saliva as an indicator of stress and if there were differences between genders. During 20 Trier Social Stress Tests heart rate and salivary cortisol concentrations were measured. Heart rate was measured every 15 seconds and salivary cortisol was collected at seven occasions. Fourteen men and six women (sixteen ambulance nurses and four paramedics) participated. A questionnaire with background data was collected. Statistical analysis used was non-parametric tests to adjust for misalignment. During the Trier Social Stress Test women had their highest salivary cortisol concentration before start of test while the maximum values for men were 10 to 20 minutes after start. In contrast, there was no difference in heart rhythm before, during and after test between genders. No correlation between heart rate and salivary cortisol was found. There was no significant difference in stress response according to personnel's age or level of education. Women and men exhibit different hormonal stress responses when it comes to performing unfamiliar actions, something that has not been seen before. Since no correlation could be seen between heart rate and salivary cortisol concentration they cannot replace each other as indicators of stress.
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Abstract Psychological suzhi has increasingly been recognized to buffer chronic stress and improve mental health. However, few studies have examined the role of psychological suzhi in the response to acute stress. The current study aimed to investigate whether psychological suzhi can buffer state anxiety and heart rate responses to acute stress in adolescents. Healthy male adolescents ( N = 63) were classified into high ( N = 30) or low ( N = 33) psychological suzhi groups based on the Chinese norm of adolescent psychological suzhi scale‐simplified version. They completed both the modified Trier Social Stress Test for Groups and a specific control condition, with heart rate and state anxiety assessed. Data were analysed with mixed‐design repeated measures analysis of variance. The results showed that the modified Trier Social Stress Test for Groups condition effectively induced an increase in state anxiety and heart rate. Furthermore, individuals with higher levels of psychological suzhi showed lower state anxiety and heart rate stress responses. The present study indicated that psychological suzhi is an important internal resource against acute stress, which may inform interventions for male adolescents exposed to acute stress.
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The Trier Social Stress Test (TSST) is commonly used to induce stress in laboratories by instructing participants to deliver a speech and to solve arithmetic tasks in front of a committee. Its implementation in virtual reality (VR) enables an investigation of stress responses under highly standardized controllable conditions.
The aim of this study was to compare stress responses among men and women in a VR version of the TSST (VR-TSST).
To this end, 16 women taking oral contraceptives and 16 men underwent the VR-TSST in a modified version including a competitor. Stress ratings, heart rate, electrodermal reactivity, and salivary cortisol responses were analyzed.
The VR-TSST induced endocrine, peripher-physiological and self-reported stress responses, indicated by a significant increase in heart rate, electrodermal activity and stress ratings as well as a small but significant cortisol response. Significant gender differences were found only for stress ratings. In conclusion, these findings confirm earlier results that VR is suitable to induce social stress both in males and females.
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Cognitive impairment under stress is a topic of concern in the field of human factors. Compared to traditional stress-inducing paradigms, the current study aimed to establish a repeatable and easy-to-operate stress-inducing paradigm and verify its effectiveness in inducing an individual’s stress response. A VR-based immersive high-altitude scene and a corresponding simulated long prop was created and three stress-inducing tasks (“experiencing the high-altitude”, “rescuing the cat”, and “avoiding flying birds”) were designed. A cognitive task (n-back) was nested into the VR scene as well to assess the effects of stress on the cognitive performance. Participants were asked to accomplish the three stress-inducing tasks on the long board and the same n-back task before and after the stress. Both reported stress level and salivary cortisol level were collected. Results showed that the current VR-based immersive high-altitude scene was able to induce an individual’s stress response according to both subjective and objective indices, which could reach the similar level as that of the previous VR-based Trier Social Stress Test (TSST) paradigm.
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This study explores the relationship between competitiveness and stress. In Experiment 1, we examine the response of cortisol, the primary stress hormone, during both piece-rate and tournament tasks. We find that the more competitive tournament task induces a higher cortisol response than the less competitive piece-rate task. Moreover, more competitively inclined subjects exhibit higher stress responses induced by the tasks. In Experiment 2, we manipulate stress using the Trier Social Stress Test and find that induced stress does not significantly affect competitiveness. Taken together, our findings suggest a tendency for people who are competitively disposed to have high stress response.
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