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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04786496
Other study ID # ITP
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date September 1, 2019
Est. completion date February 21, 2020

Study information

Verified date March 2021
Source University of Deusto
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This study compares the effects of two wise interventions (implicit theory of personality intervention and implicit theory of personality intervention plus self-affirmation) with a control condition in the stress responses of young adults. Responses include respiratory sinus arrhythmia, heart rate, skin conductance level, cortisol levels, and mood.


Description:

Whereas several studies indicate that implicit theory of personality interventions (ITP) are promising in the prevention of depressive symptoms, evidence about the effects of the ITP intervention on stress pathways is scarce. The current study aims to elucidate the effects of ITP on psychophysiological responses to social stress in young adults during their transition to university. Based on preliminary findings that ITP was more effective among younger adolescents in reducing depressive symptoms and that a combination of ITP with self-affirmation (SA) was more effective in the prevention of other risky behaviors, the current study proposes that the addition of a SA component could increase the effectiveness of the ITP intervention when responding to stress. Thus, this study compares the effects of the ITP alone and in combination with a SA component in psychophysiological responses to a standardized social stressor (the Trier Social Stress Test, TSST). Both interventions (i.e., ITP+SA and ITP) are compared with a control condition (CC) in indicators of the autonomic nervous system (heart rate -HR-, respiratory sinus arrhythmia -RSA-, skin conductance level -SCL-), the hypothalamic-pituitary-adrenal axis (cortisol level), and subjective mood. The investigators expect that participants in both ITP interventions, and in ITP+SA intervention in particular, will display better stress responses during the stressful tasks compared with participants in the CC (i.e., lower HR and SCL increase, lower RSA suppression, and lower cortisol and negative mood increase). The investigators also expect that participants would display better recovery after the stressful tasks (i.e., higher HR and SCL decrease, and higher RSA increase). Finally, this research will examine whether depressive symptoms moderate the effects of the intervention on stress responses. Previous research has shown that depression has been associated with dysregulated stress responses both at the autonomic nervous system and hypothalamic-pituitary-adrenal axis. Moreover, some studies have found that interventions are more effective among participants at risk to reduce both depression and stress. Therefore, the ITP intervention, alone and in combination with SA, could be more beneficial among those participants with higher levels of depressive symptoms.


Recruitment information / eligibility

Status Completed
Enrollment 107
Est. completion date February 21, 2020
Est. primary completion date February 21, 2020
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 26 Years
Eligibility Inclusion Criteria: - Informed consent by the participants. - To be fluent in Spanish. Exclusion criteria: - Having cardiovascular disease.

Study Design


Intervention

Behavioral:
ITP+SA Wise intervention
Intervention designed to promote well-being and resilience in late adolescents and young adults. It includes two components: a self-affirmation (SA) activity and an ITP intervention. The SA component includes a list of values so that they could choose the three most important for them. Next, they are asked to write why those selected values are the most important to them. The ITP component resembled the intervention developed by David S. Yeager and colleagues and it was adapted to first year university students. It consisted of three parts. First, participants are asked to read scientific studies that provide evidence that behaviors are controlled pathways in the brain that have the potential to be changed under the right circumstances. Second, participants read several testimonials purportedly written by second year university students to bring credibility to the ITP. Finally, participants are asked to write their own version of such a narrative (self-persuasive writing exercise).
ITP Wise intervention
Intervention designed to promote well-being and resilience in late adolescents and young adults based on four general types of change strategies: (1) scientific knowledge, (2) generation of new meanings, (3) commitment through action, and (4) active reflection. It includes the ITP component described above for the ITP+SA Wise intervention.
Control condition
The control intervention was designed to have a similar structure than the experimental interventions, including also reading and writing tasks, but that they were not in any way related to the contents of the experimental interventions. In particular, participants were asked to read an article about the fire that took place in the Notre Dame cathedral in Paris that had been recently published in a newspaper. Starting from the accident of the Notre Dame cathedral, the article focuses on reflecting on the problem of heritage conservation and analyzing the situation of other important cathedrals. After reading the article, the participants were asked to write a few lines evaluating in their opinion the importance of the conservation of historical buildings such as those mentioned and how much of the public economic budget should be used for heritage conservation.

Locations

Country Name City State
Spain University of Deusto Bilbao Vizcaya

Sponsors (3)

Lead Sponsor Collaborator
University of Deusto Basque Country Government, Spanish Government

Country where clinical trial is conducted

Spain, 

Outcome

Type Measure Description Time frame Safety issue
Primary Change from baseline levels of cortisol in saliva at recovery (immediately after the procedure -Trier Social Stress Task-). Participants provided saliva samples to be assayed for neuroendocrine levels to measure cortisol. They were directed to transfer saliva from their mouths to a tube. The sample tubes were carefully labelled and stored in a freezer at -25 ºC until they were sent to the Medikosta Laboratory. Baseline and immediately after the math phase of the Trier Social Stress Task.
Primary Change from baseline levels of heart-rate (HR) at the time of the procedure (i.e., during the Trier Social Stress Task) and recovery (i.e., immediately after the Trier Social Stress Task). Electrocardiogram (ECG) to measure heart-rate (HR) was recorded using the BioPac M150 system at a sampling rate of 1000 Hz and AcqKnowledge® 4.0 software. Baseline, during the procedure, and immediately after the procedure (i.e., the Trier Social Stress Task).
Primary Change from baseline levels of heart-rate variability (HRV) at the time of the procedure (i.e., during the Trier Social Stress Task) and recovery (i.e., immediately after the Trier Social Stress Task). Electrocardiogram (ECG) to measure heart-rate variability (HRV) was recorded using the BioPac M150 system at a sampling rate of 1000 Hz and AcqKnowledge® 4.0 software. Baseline, during the procedure, and immediately after the procedure (i.e., the Trier Social Stress Task).
Primary Change from baseline levels of skin conductance level (SCL) at the time of the procedure (i.e., during the Trier Social Stress Task) and recovery (i.e., immediately after the Trier Social Stress Task). Electrodermal Activity to measure skin conductance level (SCL) was recorded using the BioPac M150 system at a sampling rate of 1000 Hz and AcqKnowledge® 4.0 software. Baseline, during the procedure, and immediately after the procedure (i.e., the Trier Social Stress Task).
Primary Change from baseline scores of the subscale for Negative Mood of the Scale for Mood Assessment (Sanz, 2001) at recovery (immediately after the procedure -Trier Social Stress Task-). Self reported transitory negative moods measured by 12 items (assessing depression, anxiety, and hostility) scored on an 11-point scale from 0 (nothing) to 10 (a lot), yielding a total between 0 and 120 (with higher scores meaning higher negative moods). Baseline and immediately after the math phase of the Trier Social Stress Task.
Primary Change from baseline scores of the subscale for Positive Mood of the Scale for Mood Assessment (Sanz, 2001) at recovery (immediately after the procedure -Trier Social Stress Task-). Self reported transitory positive mood measured by 4 items (assessing elation) scored on an 11-point scale from 0 (nothing) to 10 (a lot), yielding a total between 0 and 40 (with higher scores meaning higher positive mood). Baseline and immediately after the math phase of the Trier Social Stress Task.
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