Posttraumatic Stress Disorder Symptom Clusters Research Articles

The therapeutic potential of exercise in post-traumatic stress disorder and its underlying mechanisms: A living systematic review of human and non-human studies

Background Exercise for post-traumatic stress disorder (PTSD) is a potentially effective adjunct to psychotherapy. However, the biopsychosocial mechanisms of exercise are not well understood. This co-produced living systematic review synthesizes evidence from human and non-human studies. Methods We Included controlled human and non-human studies involving searches of multiple electronic databases (until 31.10.23). Records were screened, extracted, assessed for risk of bias, and reconciled by two independent reviewers. The primary outcome for human studies was PTSD symptom severity, while outcomes of interest for non-human studies included freezing behaviour, fear memory, fear generalization, startle response, and locomotion. Data were synthesised with random-effects meta-analysis. Results Eleven human studies met the eligibility criteria. Overall, exercise was not associated with symptom severity improvement compared to control (standardized mean difference [SMD] -0.08, 95% confidence interval [CI] -0.24 to 0.07; 8 studies, one at low risk of bias). High-intensity exercise reduced PTSD symptoms scores more than moderate-intensity exercise. There was insufficient data to examine the effects of exercise on functional impairment, PTSD symptom clusters, and PTSD remission. Only three studies, all at high risk of bias, examined mechanisms of exercise with inconclusive results. Exercise was associated with improvement in all behavioural outcomes, including locomotor activity (SMD 1.30, 95% CI 0.74 to 1.87, 14 studies), and changes in several neurobiological markers, including increase in brain-derived neurotrophic factor (SMD 1.79, 95% CI 0.56 to 3.01). Conclusions While non-human studies provide compelling evidence for the beneficial effects of exercise, human trials do not. Evidence from non-human studies suggest that exercise might increase the levels of brain-derived neurotrophic factor, enhance cognitive appraisal, and improve perceived exertion. Overall, the paucity of data on the effectiveness of exercise in PTSD and mechanisms of action underscore the need for rigorous trials. Registration The protocol was registered with PROSPERO (ID:453615; 22.08.2023).

PTSD Is Associated with Self-Perceived Hearing Handicap: An Evaluation of Comorbidities in Veterans Without Measured Hearing Loss.

Cases of self-reported hearing difficulty despite no traditionally measured hearing loss (pure tone audiometric thresholds ≤ 25 dB HL from 250 Hz through 8000 Hz) have risen with the return of Veterans from recent conflicts in Operation Enduring Freedom, Operation Iraqi Freedom, and Operation New Dawn. Auditory outcomes improved despite low compliance among those receiving treatment. Medical chart data appeared more comprehensive for Veterans with, rather than without, auditory complaints. One possibility is that self-reported hearing problems are associated with a subset of these comorbidities, the treatment of which improved auditory outcomes. This study examined the relationships between Veterans' self-reported auditory problems and other diagnosed medical conditions. A retrospective chart review was used. Participants were 286 Veterans, aged 21 to 52 years with pure-tone audiometric thresholds ≤ 25 dB HL at all measured frequencies in both ears. Veterans were dichotomized into a group with either self-reported hearing complaints (n = 143) or an age-matched control group with no auditory complaints (n = 143). A query of the Computerized Patient Record System was performed with the date range restricted to 2009 to 2018. Metrics of self-perceived hearing handicap, auditory processing disorder testing, and hearing aid use were collected. All diagnoses and related symptoms were recorded. A best subsets regression with principled model selection was performed to investigate the role of these comorbidities on self-perceived hearing loss. The self-report group had 16 comorbidities that were classified as prevalent, having occurred in ≥33.3% of the group, compared with the age-matched control group, which had 2 comorbidities. The number of diagnosed medical conditions was associated with self-perceived hearing impairment. Specifically, posttraumatic stress disorder (PTSD) and related symptom clusters constituted the largest group of comorbidities that were significantly associated with self-reported hearing problems. The significant association between PTSD and self-perceived hearing impairment warrants investigations on whether treatment of PTSD would reduce perceived hearing handicap severity. Further, PTSD assessments could be useful for audiologists to identify potential candidates for auditory complaints without measured hearing loss.

Examining the associations between posttraumatic stress disorder symptom clusters across cognitive processing therapy.

Cognitive processing therapy (CPT) is a well-known trauma-focused treatment that aims to generate more adaptive posttrauma cognitions and emotions. Changes in cognitions are theorized to be the mechanism by which CPT leads to improvement in posttraumatic stress disorder (PTSD) symptoms. The present study aimed to explore associations between changes in PTSD symptom clusters during CPT. We hypothesized that early changes in negative alterations in cognitions and mood (NACM) would correlate with later changes in other symptom clusters. Data were collected from 296 veterans participating a 7-week PTSD residential treatment program at a U.S. Veterans Affairs medical center. PTSD symptoms were assessed at pretreatment (Week 1), midtreatment (Week 4), and posttreatment (Week 7). Cross-lagged path analyses demonstrated that pretreatment-to-midtreatment improvement in NACM was correlated with midtreatment-to-posttreatment improvement in avoidance, β =.52, though this association was bidirectional, suggesting pretreatment-to-midtreatment improvements in either cluster may be correlated with midtreatment-to-posttreatment improvements. Similarly, pretreatment-to-midtreatment improvement in intrusions, β =.40, and arousal, β =.49, were correlated with later improvement in avoidance, suggesting avoidance may improve after improvement in other clusters. Interestingly, pretreatment-to-midtreatment arousal improvement was significantly correlated with midtreatment-to-posttreatment NACM improvement, β =.27, though the reverse was nonsignificant, whereas a bidirectional association between arousal and intrusions emerged, β =.34, β =.53. Early changes in arousal were correlated with later changes in several other symptom clusters, whereas other clusters demonstrated bidirectional associations. These results may inform understanding of symptom improvement timing across CPT, which may aid in treatment selection and planning.

Understanding Intensive Care Unit Family Caregivers' Vulnerability to Post-Traumatic Stress Disorder: The Impact of Neurotic Personality Traits, Emotional Suppression, and Perceptions of Unexpected Death.

Rationale: Family members of patients who die in an intensive care unit (ICU) are at heightened risk of post-traumatic stress disorder (PTSD) symptoms. Not all surrogates develop these symptoms and heterogeneity exists in PTSD symptom clusters. Objectives: The study tested a personality model of PTSD symptoms in bereaved family caregivers of ICU patients. It was hypothesized that family members endorsing higher levels of neurotic personality traits would report higher levels of PTSD symptom clusters and that these associations would be explained by tendencies to view the patient's death as unexpected and to cope by suppressing their emotions. Methods: Participants were family members of ICU patients at an urban, academic medical center who either died or were discharged to an inpatient hospice unit. Participants were contacted for participation at least six months after the patient's death. Participants completed measures of personality, emotion regulation, and PTSD symptoms. Data were analyzed using path analysis. Results: Approximately one-third (35%) of the sample of 162 caregivers endorsed at-risk levels of PTSD. Individuals reporting higher levels of neurotic personality traits reported more PTSD symptoms (r = 0.53, p < 0.001). Perceptions that the patient death was unexpected partially explained the association of neuroticism with the intrusive re-experiencing PTSD symptoms (B = 0.45, p = 0.031). In contrast, emotional suppression partially explained the association of neuroticism with avoidance (B = 0.70, p = 0.010) and hyperarousal symptom clusters (B = 0.37, p = 0.041). Conclusions: Family vulnerability to PTSD after an ICU death can be conceptualized based on neurotic personality traits. Tendencies to view the patient's death as unexpected may contribute to intrusive thoughts and memories of the ICU experience. Individuals may avoid reminders and remain at heightened levels of arousal when they suppress their emotional experiences. Key Message: Family members who experience the death of a loved one following ICU treatment are vulnerable to PTSD symptoms. These reactions to ICU-related losses may be shaped by family members' personalities, expectations, and emotion regulation styles. Understanding these characteristics could inform family screening and intervention efforts in the ICU.

Relations between trauma-based subgroups and posttrauma health outcomes: A latent class analysis.

In trauma research, it is common for researchers to characterize participants as either "trauma exposed" or "not trauma exposed" regardless of nuanced differences of the potentially traumatic event (PTE). To our knowledge, no study has simultaneously examined differences across both PTEs and exposure types. Using latent class analysis, we investigated latent homogeneous subgroups of individuals following experiences of 16 PTEs via three exposure types (i.e., direct, indirect, and/or occupational). We further examined class differences regarding posttraumatic stress disorder (PTSD) symptom clusters, event centrality, depression, and anxiety. Our sample included 2,663 participants (Mage = 22.33; 56.0% female). Results indicated four latent subgroups: (a) occupational trauma (OT), (b) direct interpersonal trauma (DIT), (c) indirect trauma (IT), and (d) low trauma exposure (LTE). Individuals in the OT class reported the highest levels of all symptoms except for PTSD avoidance and event centrality (which were highest in the DIT class), and individuals in the LTE class reported the lowest levels of all symptoms. Several nuanced between-class differences were found regarding posttrauma outcomes. Findings further support the notion that dichotomizing participants as "trauma exposed" or "not trauma exposed" is overly simplistic and ignores important variability in trauma research. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Posttraumatic Stress Disorder Symptom Clusters, Exposure to Potentially Morally Injurious Events, and Aggression Among Army Veterans.

Very few studies have examined the association between posttraumatic stress disorder (PTSD) symptom clusters and aggression since the change in PTSD diagnosis criteria a decade ago. Furthermore, these studies have used measures based on PTSD criteria of the DSM-IV. The current study therefore examines the association between PTSD symptom clusters, exposure to potentially morally injurious events (PMIEs), and various types of aggression following the change in PTSD criteria and in accordance with the criteria of the DSM-5-TR. A sample of 167 Israeli combat veterans completed validated self-report questionnaires tapping PTSD symptoms, exposure to PMIEs, and aggression levels. Our analysis revealed a significant positive relationship between the number of court-martials, betrayal-based PMIEs, all PTSD symptom clusters, and aggression. We also found that the arousal cluster, as well as the number of court-martials and age, predicted aggression, whereas the re-experiencing cluster predicted lower aggression levels. Besides an updated understanding of the association between all PTSD symptom clusters and various forms of aggression, these findings emphasize the importance of targeting arousal symptoms and especially anger in treatment of veterans with PTSD symptoms and those who report experiences of betrayal. The findings also suggest clinicians to consider arousal symptoms, age, and history of court-martials when conducting either clinical or actuarial risk assessments of veterans.

Gender differences in posttraumatic stress symptoms, marital satisfaction, and parenting behaviors in adults following typhoon Lekima.

Belsky's parenting model provides insight into the relationship between parental psychological status and parenting behaviors. However, little is known about the unique associations of posttraumatic stress disorder (PTSD) symptoms with specific parenting behaviors. This study aimed to assess the associations of PTSD symptoms and three types of parenting behaviors (rejection, emotional warmth, and overprotection) with marital satisfaction, and to examine gender differences in these associations. Self-report questionnaires were used to survey 4,570 parents 3 months after Typhoon Lekima in China. The results showed that intrusion and avoidance symptoms had positively indirect associations with emotional warmth and negatively indirect associations with rejection and overprotection via marital satisfaction. However, negative cognitive and emotional alterations (NCEA) and hyperarousal symptoms had opposite relationships with three types of parenting behavior. A gender-moderated mediation relationship was found in the associations of PTSD symptoms and parenting behaviors via marital satisfaction. Marital satisfaction played a mediating role in the relationships between four PTSD symptom clusters and three types of parenting behavior in mothers, whereas in fathers, marital satisfaction mediated only the relationships of NCEA and hyperarousal symptoms with three types of parenting behavior. Marital satisfaction mediated the associations between four distinct PTSD symptom clusters and three types of parenting behavior, and a gender difference was found to be in these indirect relationships. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

The association between posttraumatic stress disorder symptom severity and distress tolerance in traumatic stress treatment.

Distress tolerance, or the perceived ability to tolerate negative emotional states, is often associated with posttraumatic stress disorder (PTSD) such that higher distress tolerance is generally associated with less severe PTSD symptom levels. As distress tolerance is often considered a risk and maintenance factor in distress disorders, examining the association between changes in distress tolerance and changes in PTSD symptoms may have clinical relevance. The present study examined the associations between PTSD symptom severity and distress tolerance across three assessment points over 12 weeks among 212 patients receiving outpatient psychotherapy services. Using random-intercept cross-lagged panel modeling (RI-CLPM), concurrent and prospective associations between PTSD and distress tolerance were examined. PTSD symptoms at Time 1 and Time 2 significantly predicted distress tolerance at Time 2, β = -.296, and Time 3, β = -.395, respectively. Distress tolerance did not predict subsequent PTSD symptom severity. Exploratory analyses examined distress tolerance and four PTSD symptom clusters over time. Patterns of results differed across clusters, though it was consistent that only PTSD symptom clusters predicted subsequent distress tolerance and not vice versa. The results support the interrelationship of changes in psychopathology and emotional distress tolerance and indicate that distress tolerance may be an important factor in symptom remission during PTSD treatment.

Which PTSD symptom would mediate the relationship between trauma exposure and depressive symptoms? Preliminary findings from two samples of trauma-exposed middle school students

Recent studies have documented that post-traumatic stress disorder (PTSD) symptoms are robustly associated with depressive symptoms and may mediate the relationship between trauma exposure and depressive symptoms. However, no study has explored the differential mediating effects of four specific PTSD symptom clusters. This study made the first attempt to examine the mediating effects of different PTSD symptom clusters on the linkage between trauma exposure and depressive symptoms. We analyzed data from two large samples of Chinese middle school students (N = 693 and 957) who had experienced the 2013 Ya'an earthquake. Participants completed standardized measures of trauma exposure, PTSD symptoms, and depressive symptoms. The prevalence of probable PTSD was 3.4% and 3.6%, respectively, in the two samples. Mediation analyses revealed that negative alterations in cognitions and mood and alterations in arousal and reactivity were statistically significant mediators in the relationship between trauma exposure during the earthquake and depressive symptoms. The results are very consistent in both samples. The findings suggest that symptom-specific tailored management of these two specific PTSD symptom clusters might have the potential to change the trajectory of developing depressive symptoms among trauma-exposed populations.

Unraveling PTSD: Symptom cluster change during and 1 year after veterans' residential PTSD treatment.

Although treatment of posttraumatic stress disorder (PTSD) is effective in reducing symptom severity, remission rates are low. One potential underlying reason for treatment ineffectiveness is differential response of specific PTSD symptom clusters. Using data from a national Veterans Affairs (VA) residential PTSD treatment cohort, we conducted a longitudinal study to examine changes in Diagnostic and Statistical Manual of Mental Disorders, fifth edition PTSD symptom clusters from admission to 1-year follow-up. PTSD symptom data were analyzed from a national cohort of veterans who completed VA PTSD residential treatment between October 2019 and September 2020 (n = 1,648; 13% women; median age 44.2 years). Endorsement (%) and severity (M[SD]) of PTSD clusters and individual symptoms were compared at admission, discharge, 4-month and 1-year follow-ups. Large magnitude reductions in all four PTSD symptom clusters were observed from admission to discharge and both follow-ups; however, endorsement of all symptom clusters remained high. Intrusions (Cluster B) were the most highly endorsed at discharge and follow-up, whereas avoidance symptoms (Cluster C) were the least highly endorsed. Differential patterns of change were observed among the 20 individual PTSD symptoms; for example, flashbacks decreased during treatment, but increased to near admission levels by 1-year postdischarge. Results suggest that intrusive symptoms may be more resistant to residential treatment for PTSD and contribute to lower likelihood of treatment success. Future work is needed to examine differential treatment response for PTSD clusters, to inform the improvement of current and creation of novel treatment interventions, and to better address intrusive symptoms to maximize PTSD treatment gains. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

T78 - The Effect of Prolonged Exposure Therapy on Posttraumatic Stress Disorder Symptom Clusters in Individuals With Opioid Use Disorder

T78 - The Effect of Prolonged Exposure Therapy on Posttraumatic Stress Disorder Symptom Clusters in Individuals With Opioid Use Disorder

Associations between PTSD and temporal discounting: The role of future thinking

Background and objectivesDespite documented alterations in future thinking in posttraumatic stress disorder (PTSD), our understanding of how individuals with PTSD make future-oriented decisions is limited. We tested the hypothesis that increased discounting in association with PTSD reflects failure to spontaneously envision future rewarding situations. MethodsThirty-seven trauma exposed war-zone veterans completed a standard temporal discounting task as well as a temporal discounting task accompanied by episodic future thinking cues. ResultsSeverity of PTSD symptoms was associated with preference for sooner, smaller rewards in the standard task. Consistent with our hypothesis, when participants engaged in future thinking, greater PTSD symptom severity was no longer associated with steeper discounting. Moreover, difficulty anticipating future events, as measured contemporaneously in a separate task (Verfaellie et al., 2024), mediated the relationship between PTSD symptom severity and degree of discounting in the standard task. Among PTSD symptom clusters, the severity of avoidance and negative alterations in cognition and mood was related to steeper discounting. Measures of depression and alcohol use were not associated with discounting. LimitationsThe sample included mostly male, predominantly White veterans who experienced primarily combat-related trauma. ConclusionsPTSD-associated alterations in temporal discounting reflect failure to spontaneously imagine future positive events. Two common correlates of PTSD, depression and alcohol use, could not account for the observed associations between PTSD and future-oriented decisions.

The association between PTSD symptom clusters and religion/spirituality with alcohol use among first responders

Alcohol misuse and posttraumatic stress disorder (PTSD) co-occur at high rates among first responders (e.g., law enforcement, firefighters, paramedics), underscoring the need to better understand these relations to inform intervention efforts. Identifying malleable processes relevant to the association between PTSD and alcohol among first responders could inform tailored interventions. An example of such a malleable process is spirituality. As such, the current study examined the unique relationships between PTSD symptom clusters and alcohol misuse, while also accounting for the role of select demographics and religion/spirituality, in a sample of first responders. A national online sample of first responders (N = 320) completed measures of PTSD symptomology, alcohol misuse, religion/spirituality and demographics. Hierarchical linear regression analyses revealed that PTSD Intrusion (Cluster B) symptom severity was associated with greater alcohol misuse and PTSD Avoidance (Cluster C) was associated with lower alcohol misuse. Additionally, positive and negative spiritual coping were also associated with alcohol misuse. In the context of similar research among military samples, findings suggest potentially unique associations between PTSD symptom clusters and alcohol misuse among first responders. Additionally, findings highlight the potentially protective role of religion/spirituality in this population. Future research should explore nuanced relationships between PTSD symptom clusters and alcohol misuse as well as the salience of spirituality/religion in this unique population.

A longitudinal investigation of PTSD symptoms, hazardous drinking, and relationship satisfaction in college student dating relationships

Post-traumatic stress disorder (PTSD) symptoms and hazardous drinking have been linked to lower relationship satisfaction; however, few studies have evaluated these associations over time in a college sample. The current study aimed to examine within-person and between-person longitudinal main and interactive effects of self-reported PTSD symptoms and hazardous drinking on relationship satisfaction in a college sample. We further examined whether individual PTSD symptom clusters (i.e., re-experiencing, avoidance, hyperarousal, and emotional numbing) uniquely predicted relationship satisfaction. College students in current dating relationships ( N = 307; 71% cisgender women) completed online self-report measures assessing relationship satisfaction, PTSD symptoms, and hazardous alcohol use on four occasions across 12 months. Multilevel models revealed that students with more severe PTSD symptoms than average had lower relationship satisfaction (i.e., at the between-person level). Additionally, higher hazardous drinking at the between-person and within-person levels was associated with lower relationship satisfaction. When examining specific PTSD symptom clusters, results indicated only emotional numbing symptoms were negatively associated with relationship satisfaction at the between-person and within-person levels after controlling for other PTSD symptom clusters. Collectively, these results underscore the impact of within- and between-person individual differences in PTSD symptoms and hazardous drinking on romantic relationships in college student populations.

Are There Differences Among Evidence-Based Psychotherapies for Treating Different DSM-5 PTSD Symptom Clusters? A Systematic Review and Meta-analysis of Controlled Clinical Trials.

Posttraumatic stress disorder (PTSD) is a heterogeneous disease defined by four Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) symptom clusters: reexperiencing, avoidance, negative alterations in cognitions and mood, and hyperarousal. There are effective evidence-based psychotherapies (EBPs) for PTSD. However, given the variety of PTSD clinical presentations, we conducted the first meta-analysis investigating whether DSM-5 PTSD symptom clusters show different responses to EBPs. We systematically reviewed the literature for controlled clinical trials in five databases, performed a meta-analysis, and evaluated the methodological quality of the studies. We screened 633 studies and included seven. Three showed high risk, two showed some concerns, and one showed a low risk of bias. The symptom clusters do not seem to respond differently to EBPs (SMD cluster B: -0.40; 95% confidence interval [CI], -0.87 to 0.08; cluster C: -0.49; 95% CI, -0.90 to -0.08; cluster D: -0.44; 95% CI, -0.94 to 0.05; cluster E: -0.54; 95% CI, -1.07 to -0.0), even when analyzed by the therapeutic focuses. The findings dovetail nicely with the network theory of PTSD symptom, as although it is a heterogeneous disorder, the EBPs seem to promote a kind of cascade of symptom improvement.

Differential posttraumatic stress disorder symptom cluster response to stellate ganglion block: secondary analysis of a randomized controlled trial

Empirically supported treatments for posttraumatic stress disorder (PTSD) exist, but research suggests these therapies are less effective, acceptable, and feasible to deliver to active duty service members (SMs) compared to civilians. Stellate ganglion block (SGB) procedure, in which a local anesthetic is injected around the cervical sympathetic chain or stellate ganglion to temporarily inhibit sympathetic nervous activity, is gaining popularity as an alternative PTSD treatment in military settings. However, it is unknown whether certain PTSD symptoms are more responsive to SGB than others. The current study involved a secondary analysis of data collected from a previous randomized controlled trial of SGB compared to sham (normal saline) injection (N = 113 SMs). PTSD symptoms were assessed via clinical interview and self-report at baseline and 8 weeks post-SGB or sham. Logistic regression analyses showed that the marked alterations in arousal and reactivity PTSD symptom cluster demonstrated the greatest symptom severity reductions after SGB, relative to sham. The reexperiencing cluster also showed pronounced response to SGB in clinician-rated but not self-reported outcomes. Post-hoc item-level analyses suggested that arousal and reactivity cluster findings were driven by reductions in hypervigilance, concentration difficulties, and sleep disturbance, whereas clinician-rated reexperiencing cluster findings were driven by reductions in physiological reactions to trauma cues, emotional reactions to trauma cues, and intrusions. Our findings align with a burgeoning literature positioning SGB as a potential novel or adjunctive PTSD treatment. Results could guide future hypothesis-driven research on mediators of therapeutic change during SGB for PTSD symptoms in SMs.

Introduction: IJCAR – 2023 Issue

Dear readers, I am pleased to introduce the 2023 Issue of the International Journal of Child and Adolescent Resilience (IJCAR). This issue includes: two regular articles on trauma and maltreatment and associated impacts; three brief reports on varying aspects of hardships and resilience in different populations; and one theoretical paper about a narrative shelter model to give youth who experienced violence a voice and choice. In particular, the regular articles shed light on hardships and resilience experienced by differing populations. Bégin and colleagues examined the effects of using the internet survey method compared to a population-based telephone survey method on the profile of women with a history of child sexual abuse, in terms of socio-demographic data, victimization experiences, and mental health symptoms in adulthood. Jamison and colleagues aimed to gain insights on youth of color in the United States who have experienced violence regarding the associations between resilience and psychological health, social support, and school engagement. Furthermore, the 2023 issue of IJCAR also includes three brief reports on different topics associated to experiences of trauma, maltreatment, and resilience in various populations. Firstly, Brend et al. compared a sample of Finnish social workers serving children and families or social workers in other domains, in terms of the associations between moral distress and burnout amongst these groups. Secondly, Frederickson et al. investigated whether child maltreatment predicted the severity of posttraumatic stress disorder symptoms and symptom clusters for Canadian women during pregnancy, as well as changes in symptoms from pregnancy to three months postpartum. Finally, Souza et al. aimed to determine if social media in Brazil is a viable outlet for the dissemination of empirically supported information surrounding the topics of child abuse, adverse childhood events, and resilience. Finally, the issue ends with a theoretical paper by Nyirinkwaya and Jenney, regarding a shelter narrative model for research and practice on childhood experiences of intimate partner violence in young people, in order to integrate storytelling and storylistening to help youth exercise their voice and choice. Thus, we encourage you to read these various articles to obtain rich information about ongoing research in the field of resilience. I wish to also take this opportunity to sincerely thank all the members of the IJCAR team for their continuous and dedicated work in the editing and publishing process. Particularly, I wish to thank our associate editors, Dr. Tara Black, Dr. Delphine Collin-Vézina, Dr. Isabelle Daigneault, Dr. Rachel Langevin, and Dr. Nicole Racine; layout editor, Manon Robichaud; and managing editor and senior copyeditor, Teresa Pirro, all of which have done a fantastic job in their varying roles. I also want to take this opportunity to welcome Dr. Roxanne Guyon as a new associate editor. We hope you enjoy reading the current issue! This is also a friendly reminder to prepare your manuscripts for the next issue. Please submit your manuscripts in English, or in French, and feel free to forward this information to colleagues and students who may be interested. We look forward to your manuscripts and to the next issue of IJCAR. Happy reading! Martine Hébert, Editor-in-Chief

A Network Analysis of Symptoms of Post-Traumatic Stress Disorder and Facets of Mindfulness

Post-traumatic Stress Disorder (PTSD) is a mental health concern impacting a large proportion of the population. There is a growing interest in mindfulness-based treatments for PTSD. However, some individuals with PTSD do not respond to treatment. Identifying factors that may provide a more precise treatment approach has the potential to enhance response. Network analysis is a data-driven methodology that has been used to suggest specific targets for treatment. To date, there has not been a network analysis examining the interrelation between PTSD symptoms and trait mindfulness. The current study is an exploratory analysis of N = 214 adults from a non-clinical sample who endorsed a Criterion A traumatic event and completed the PTSD Checklist for DSM-5 and the Five Facet Mindfulness Questionnaire. Both undirected and directed networks were generated to identify links between PTSD symptom clusters and the facets of mindfulness. Both networks highlighted the connection between the PTSD symptom cluster Alterations in Arousal and Reactivity and the Awareness facet of mindfulness; and the PTSD symptom cluster Negative Alterations in Cognitions and Mood with the Non-judging facet of mindfulness. Taken together, these findings provide further evidence that greater mindfulness is generally associated with lower PTSD symptoms. Importantly, the findings highlight Non-judgement and Awareness as facets that might warrant further investigation in the context of mindfulness-based treatment efforts for PTSD.

Symptom Severity and Beat-to-Beat Blood Pressure Variability in Patients with Post-Traumatic Stress Disorder (PTSD)

Individuals with post-traumatic stress disorder (PTSD) have an elevated risk of developing cardiovascular disease. Emerging research suggests that blood pressure variability (BPV) may serve as an early indicator for increased cardiovascular disease risk. However, the relationship between post-traumatic stress symptom severity and symptom clusters, and comorbid conditions such as depression, with BPV is unclear. Purpose: The primary objective of this study was to investigate the relationship between the severity of PTSD and depression symptoms, PTSD symptom clusters, and beat-to-beat blood pressure variability (BPV) in a sample of individuals diagnosed with PTSD. We hypothesized that participants with greater PTSD symptom severity would have increased BPV. Methods: Twenty participants (mean age = 46 ± 10 yr; 70% males; 75% African American) with diagnosed PTSD were enrolled. PTSD severity and symptom clusters were assessed via the PTSD Checklist (PCL-5) and depression symptoms were assessed via Beck's Depression Inventory (BDI). Beat-to-beat blood pressure was recorded via finger photoplethysmography for a five-minute duration. BPV indices were calculated as the coeffcient of variation (CV), standard deviation (SD), and average real variability (ARV) for systolic, diastolic, and mean blood pressure. Pearson correlations were conducted to evaluate the association between symptoms and BPV outcomes. Participants were also categorized into two groups based on symptom severity. Independent t-tests were used to compare those with mild to moderate symptoms (n = 7) relative to participants with severe and extreme PTSD symptoms (n = 13). Results: PTSD symptom severity was significantly correlated with depression symptoms (r = 0.83, p &lt; 0.001). However, there were no significant correlations between BPV measures and either PTSD or depression symptoms. We did observe moderate non-significant correlations between the PTSD intrusive symptom cluster and diastolic and mean blood pressure CV (r = 0.33 and r = 0.29, p &gt; 0.05). Similar moderate correlations were observed between depression symptoms and diastolic and mean blood pressure CV (r = 0.31 and r = 0.29, p &gt; 0.05). No significant differences were observed between the two symptom severity groups in terms of systolic, diastolic, and mean blood pressure for CV, SD, and ARV (systolic CV 0.61 ± 0.17 vs. 0.62 ± 0.17 %, p &gt; 0.05, diastolic CV, 0.70 ± 0.06 vs. 0.72 ± 0.16 %, p &gt; 0.05, and mean blood pressure CV 0.63 ± 0.09 vs. 0.65 ± 0.15 %, p &gt; 0.05 for mild to moderate and severe to extreme PTSD symptoms, respectively). Conclusions: Contrary to our hypothesis, those with greater PTSD symptom severity did not have significantly greater BPV. In summary, our data demonstrate that higher PTSD symptoms are not associated with beat-to-beat BPV; however, the moderate correlations suggest that larger studies are needed to determine if PTSD intrusive symptoms and depression symptoms, are related beat-to-beat BPV indices. VA Merit I01-CX001065, and DOD PR210574. M. McGranahan is supported by NIDDK training grant TL1DK129502 and U2CDK129501. This is the full abstract presented at the American Physiology Summit 2024 meeting and is only available in HTML format. There are no additional versions or additional content available for this abstract. Physiology was not involved in the peer review process.

Predicting aggressive behaviors: Examining unique and interactive roles of PTSD and emotion dysregulation in a minority sample.

Aggression is a costly public health problem with severe and multi-faceted negative consequences and thus, identifying factors that contribute to aggression, particularly in understudied populations, is necessary to develop more effective interventions to reduce the public health cost of aggression. The goal this study was to test whether difficulties regulating emotions moderated the association between posttraumatic stress disorder (PTSD) symptoms and aggression in a community sample of predominantly Black females with high levels of trauma exposure. Furthermore, we explored unique relations between PTSD symptom clusters and distinct subscales of difficulties regulating emotions and aggression. The sample included 601 community participants recruited from an urban public hospital. Symptoms were assessed using self-report measures including the Difficulties in Emotion Regulation Scale (DERS) and Behavioral Questionnaire-Short. Regression analyses were conducted using PTSD symptoms and total DERS to test their interaction as predictors for aggression (using BQ-Short). We found that higher levels of PTSD arousal symptoms and difficulty controlling impulses when upset were positively related to aggression. We also conducted an exploratory analysis to examine the association between PTSD symptom clusters using the Alternative Symptom Clusters hybrid model. The results suggest that some PTSD symptoms (externalizing behavior) and some emotion dysregulation processes (difficulties controlling impulses when upset), relate to aggression in independent, rather than multiplicative ways. These results offer insights for new directions of research that focuses on the independent association between specific emotion dysregulation processes and PTSD symptoms on aggression.