Predictors of Long-Term Exercise Engagement in Patients With Obsessive-Compulsive Disorder: The Role of Physical Activity Enjoyment.

Most U.S. adults, even more so those with psychiatric conditions like obsessive-compulsive disorder (OCD), do not engage in the recommended amount of physical activity (PA), despite the wide array of physical and mental health benefits associated with exercise. Therefore, it is essential to identify mechanistic factors that drive long-term exercise engagement so they can be targeted. Using the science of behavior change (SOBC) framework, this study examined potential predictors of long-term exercise engagement as a first step towards identifying modifiable mechanisms, in individuals with OCD, such as PA enjoyment, positive or negative affect, and behavioral activation. Fifty-six low-active patients (mean age = 38.8 ±â€¯13.0, 64% female) with a primary diagnosis of OCD were randomized to either aerobic exercise (AE; n = 28) or health education (HE; n = 28), and completed measures of exercise engagement, PA enjoyment, behavioral activation, and positive and negative affect at baseline, postintervention, and 3-, 6-, and 12-month follow-up. Significant predictors of long-term exercise engagement up to 6-months postintervention were baseline PA (Estimate = 0.29, 95%CI [0.09, 0.49], p = .005) and higher baseline PA enjoyment (Estimate = 1.09, 95%CI [0.30, 1.89], p = .008). Change in PA enjoyment from baseline to postintervention was greater in AE vs. HE, t(44) = -2.06, p = .046, d = -0.61, but endpoint PA enjoyment did not predict follow-up exercise engagement above and beyond baseline PA enjoyment. Other hypothesized potential mechanisms (baseline affect or behavioral activation) did not significantly predict exercise engagement. Results suggest that PA enjoyment may be an important modifiable target mechanism for intervention, even prior to a formal exercise intervention. Next steps aligned with the SOBC framework are discussed, including examining intervention strategies to target PA enjoyment, particularly among individuals with OCD or other psychiatric conditions, who may benefit most from long-term exercise engagement's effects on physical and mental health.

Physical activity may buffer against depression and promote resilience after major life stressors.

As many individuals experience potentially traumatic or stressful life events, understanding factors that are likely to promote resilience is imperative. Given the demonstrated efficacy of exercise for depression treatment, we examined if exercise buffers against the risk of developing psychiatric symptoms following life stressors. 1405 participants (61% female) from a longitudinal panel cohort experienced disability onset (43%), bereavement (26%), heart attack (20%), divorce (11%), and job loss (3%). They reported time spent exercising and depressive symptoms (Center for Epidemiologic Studies Depression scale) across three time points collected in two-year intervals: T0 (pre-stressor), T1 (acutely post-stressor), and T2 (post-stressor). Participants were classified in previously identified heterogeneous depression trajectories pre- to post-life stressor: resilient (69%), emerging (11.5%), chronic (10%), and improving (9.5%). Multinomial logistic regression found that more T0 exercise predicted likelihood of classification in resilient versus other groups (all p<.02). Controlling for covariates, only the higher likelihood of classification in resilient versus improving remained (p=.03). Follow-up repeated measures general linear model (GLM) assessed whether trajectory was associated with exercise at each time, controlling for covariates. GLM indicated significant within-subjects effects for time (p=.016, partial η2=.003) and time*trajectory (p=.020, partial η2=.005) on exercise and significant between-subjects effects of trajectory (p<.001, partial η2=.016) and all covariates. The resilient group showed consistent high exercise levels. The improving group had consistent moderate exercise. The emerging and chronic groups were associated with lower exercise post-stressor. Pre-stressor exercise may buffer against depression and ongoing exercise may be associated with lower depression levels following a major life stressor.

The influence of posttraumatic stress disorder treatment on anxiety sensitivity: Impact of prolonged exposure, sertraline, and their combination.

Trauma-informed beliefs often decrease during posttraumatic stress disorder (PTSD) treatment. This may also extend to anxiety sensitivity (AS), defined as a fear of anxiety-related sensations and beliefs that anxiety is dangerous and/or intolerable. However, little is known about how AS changes during exposure-based and psychopharmacological PTSD treatments. Further, high AS may be a risk factor for diminished PTSD symptom improvement and increased treatment dropout. To better understand how AS impacts and is impacted by PTSD treatment, we conducted a secondary analysis of a randomized clinical trial with a sample of 223 veterans (87.0% male, 57.5% White) with PTSD from four U.S. sites. Veterans were randomized to receive prolonged exposure (PE) plus placebo (n = 74), sertraline plus enhanced medication management (n = 74), or PE plus sertraline (n = 75). Veterans answered questions about PTSD symptoms and AS at baseline and 6-, 12-, 24-, 36-, and 52-week follow-ups. High baseline AS was related to high levels of PTSD severity at 24 weeks across all conditions, ß = .244, p = .013, but did not predict dropout from exposure-based, ß = .077, p = .374, or psychopharmacological therapy, ß = .009, p = .893. AS also significantly decreased across all three treatment arms, with no between-group differences; these reductions were maintained at the 52-week follow-up. These findings suggest that high AS is a risk factor for attenuated PTSD treatment response but also provide evidence that AS can be improved by both PE and an enhanced psychopharmacological intervention for PTSD.

Heterogeneity of posttraumatic stress, depression, and fear of cancer recurrence in breast cancer survivors: a latent class analysis.

PURPOSE: Breast cancer survivors may demonstrate elevated psychological distress, which can also hinder adherence to survivorship care plans. Our goal was to study heterogeneity of behavioral health and functioning in breast cancer survivors, and identify both risk and protective factors to improve targets for wellness interventions. METHODS: Breast cancer survivors (n = 187) consented to complete self-reported psychological measures and to access their medical records. Latent class analysis (LCA) was used to classify heterogeneous subpopulations based on levels of depression, post-traumatic stress, fear of cancer recurrence, cancer-related pain, and fatigue. Multinomial logistic regression and auxiliary analysis in a 3-step modeling conditional approach was used to identify characteristics of the group based on demographics, treatment history and characteristics, and current medication prescriptions. RESULTS: Three subpopulations of breast cancer survivors were identified from the LCA: a modal Resilient group (48.2%, n = 90), a Moderate Symptoms group (34%, n = 65), and an Elevated Symptoms group (n = 17%, n = 32) with clinically-relevant impairment. Results from the logistic regression indicated that individuals in the Elevated Symptoms group were less likely to have a family history of breast cancer; they were more likely to be closer to time of diagnosis and younger, have received chemotherapy and psychotropic prescriptions, and have higher BMI. Survivors in the Elevated Symptoms group were also less likely to be prescribed estrogen inhibitors than the Moderate Symptoms group. CONCLUSIONS: This study identified subgroups of breast cancer survivors based on behavioral, psychological, and treatment-related characteristics, with implications for targeted monitoring and survivorship care plans. IMPLICATIONS FOR CANCER SURVIVORS: Results showed the majority of cancer survivors were resilient, with minimal psychological distress. Results also suggest the importance of paying special attention to younger patients getting chemotherapy, especially those without a family history of breast cancer.

Anxiety Disorders: A Review.

Importance: Anxiety disorders have a lifetime prevalence of approximately 34% in the US, are often chronic, and significantly impair quality of life and functioning. Observations: Anxiety disorders are characterized by symptoms that include worry, social and performance fears, unexpected and/or triggered panic attacks, anticipatory anxiety, and avoidance behaviors. Generalized anxiety disorder (6.2% lifetime prevalence), social anxiety disorder (13% lifetime prevalence), and panic disorder (5.2% lifetime prevalence) with or without agoraphobia are common anxiety disorders seen in primary care. Anxiety disorders are associated with physical symptoms, such as palpitations, shortness of breath, and dizziness. Brief screening measures applied in primary care, such as the Generalized Anxiety Disorder-7, can aid in diagnosis of anxiety disorders (sensitivity, 57.6% to 93.9%; specificity, 61% to 97%). Providing information about symptoms, diagnosis, and evidence-based treatments is a first step in helping patients with anxiety. First-line treatments include pharmacotherapy and psychotherapy. Selective serotonin reuptake inhibitors (SSRIs, eg, sertraline) and serotonin-norepinephrine reuptake inhibitors (SNRIs, eg, venlafaxine extended release) remain first-line pharmacotherapy for generalized anxiety disorder, social anxiety disorder, and panic disorder. Meta-analyses suggest that SSRIs and SNRIs are associated with small to medium effect sizes compared with placebo (eg, generalized anxiety disorder: standardized mean difference [SMD], -0.55 [95% CI, -0.64 to -0.46]; social anxiety disorder: SMD, -0.67 [95% CI, -0.76 to -0.58]; panic disorder: SMD, -0.30 [95% CI, -0.37 to -0.23]). Cognitive behavioral therapy is the psychotherapy with the most evidence of efficacy for anxiety disorders compared with psychological or pill placebo (eg, generalized anxiety disorder: Hedges g = 1.01 [large effect size] [95% CI, 0.44 to 1.57]; social anxiety disorder: Hedges g = 0.41 [small to medium effect] [95% CI, 0.25 to 0.57]; panic disorder: Hedges g = 0.39 [small to medium effect[ [95% CI, 0.12 to 0.65]), including in primary care. When selecting treatment, clinicians should consider patient preference, current and prior treatments, medical and psychiatric comorbid illnesses, age, sex, and reproductive planning, as well as cost and access to care. Conclusions and Relevance: Anxiety disorders affect approximately 34% of adults during their lifetime in the US and are associated with significant distress and impairment. First-line treatments for anxiety disorders include cognitive behavioral therapy, SSRIs such as sertraline, and SNRIs such as venlafaxine extended release.

Impact of preference for yoga or cognitive behavioral therapy in patients with generalized anxiety disorder on treatment outcomes and engagement.

There is some, but inconsistent, evidence to suggest that matching patient treatment preference enhances treatment engagement and outcome. The current study examined differential preferences and factors associated with treatment preference for 12-week group cognitive behavioral therapy (CBT), yoga, or stress education in 226 adults with generalized anxiety disorder (GAD; 70% female, Mean age = 33 ± 13.5). In a subsample of 165 patients who reported an intervention preference and were randomized to yoga or CBT, we further examined whether match to preferred intervention improved the primary treatment outcome (responder status on Clinical Global Impressions Scale) and engagement (dropout, homework compliance). Preferences for CBT (44%) and yoga (40%) were similar among patients. Women tended to prefer yoga (OR = 2.75, p = .01) and CBT preference was associated with higher baseline perceived stress (OR = 0.92, p = .04) and self-consciousness meta-cognitions (OR = 0.90, p = .02). Among those not matched to their preference, treatment response was higher for those receiving CBT than yoga (OR = 11.73, p = .013); there were no group differences for those matched to their treatment preference. In yoga, those who received their preference were more likely to drop than those who did not (OR = 3.02, 95% CI = [1.20, 7.58], p = .037). This was not the case for CBT (OR = 0.37, 95% CI = [0.13, 1.03], p = .076). Preference match did not predict homework compliance. Overall, results suggest that treatment preference may be important to consider to optimize outcome and engagement; however, it may vary by treatment modality. Future research incorporating preference, especially with yoga for anxiety, is aligned with personalized medicine. TRIAL REGISTRATION: clinicaltrials.gov: NCT01912287; https://clinicaltrials.gov/ct2/show/NCT01912287.

Prolonged Grief Disorder: Course, Diagnosis, Assessment, and Treatment.

Losing a loved one is one of life's greatest stressors. Although most bereaved individuals navigate through a period of intense acute grief that lessens with time, approximately 10% will develop a prolonged grief condition. This review provides an overview of the course of grief and describes risk factors for developing prolonged grief disorder. The evolution of the prolonged grief disorder diagnosis, including the latest criteria sets for ICD-11 and DSM-5, as well as common comorbid conditions and differential diagnosis are discussed. Clinically useful self-report and clinician-rated measures for assessing symptom constructs and overall prolonged grief disorder severity, evidence-based psychotherapies (such as complicated grief treatment), as well as evidence about pharmacologic approaches are presented. Finally, the authors discuss important future directions, including a potential increase in prolonged grief disorder cases due to the COVID-19 pandemic.

Barriers and engagement in breast cancer survivorship wellness activities.

PURPOSE: Breast cancer survivors may be at risk for increased rates of emotional distress and poorer quality of life. Survivorship care plans (SCPs) promoting wellness activities may support well-being; however, survivors may not receive or engage in their SCPs. This study aimed to assess receipt and participation in SCP activities as well as barriers to engagement amongst breast cancer survivors. METHODS: Breast cancer survivors (n = 187; 99% female, Mean age = 57.7) consented and completed self-reported assessments of SCP recommendations, engagement and interest in wellness activities, and potential barriers to engagement. RESULTS: A minority of participants recalled receiving an SCP (21%). The most physician recommended (62%) and completed (53%) activity was exercise. Interest in adding other wellness activities to the SCP was high, with reported interest levels of approximately 50% for several activities (e.g., mind body, nutrition, psychotherapy interventions). Fully half reported that having a physician-designed plan would influence participation in activities. The most common reported barriers to SCP activity engagement were lack of time (82%), work/school (65%), and lack of information (65%). CONCLUSION: Few survivors recalled receiving a formal SCP, and lack of information about wellness activities was a commonly reported barrier to participation. Interest in wellness activities was generally high and may indicate the need for more formal prescription or motivation enhancement techniques to promote SCP engagement. There may be a clinical need to emphasize SCP recommendations to enhance recall and increase engagement in wellness activities that may reduce psychological distress and improve quality of life.

Posttraumatic Distress Symptoms and Their Response to Treatment in Adults With Prolonged Grief Disorder.

OBJECTIVE: Posttraumatic stress disorder and prolonged grief disorder (PGD) arise following major life stressors and may share some overlapping symptomatology. This study aimed to examine the presence and response to treatment of posttraumatic stress symptoms (PTSS) in bereaved adults with a primary diagnosis of PGD. METHODS: A randomized controlled trial of 395 adults with PGD (defined as an Inventory of Complicated Grief score ≥ 30 plus confirmation on structured clinical interview) randomly assigned participants to either complicated grief treatment (CGT) with citalopram, CGT plus placebo, citalopram, or placebo between March 2010 and September 2014. This secondary analysis examined the presence of PTSS (per the Davidson Trauma Scale) at baseline and change in PTSS with treatment using longitudinal mixed-effects regression and examined the role of violent compared to nonviolent deaths (loss type). RESULTS: High levels of PTSS were present at baseline, regardless of loss type, and were associated with increased functional impairment (P < .001). CGT with placebo demonstrated efficacy for PTSS compared to placebo in both threshold (OR = 2.71; 95% CI, 1.13-6.52; P = .026) and continuous (P < .001; effect size d = 0.47) analyses, and analyses were suggestive of a greater effect for CGT plus citalopram compared to citalopram alone (threshold analysis: OR = 2.84; 95% CI, 1.20-6.70; P = .017; continuous analysis: P = .053; d = 0.25). In contrast, citalopram did not differ from placebo, and CGT plus citalopram did not differ from CGT plus placebo. CONCLUSIONS: Bereavement-related PTSS are common in bereaved adults with PGD in the context of both violent and nonviolent death and are associated with poorer functioning. CGT shows efficacy for PTSS, while the antidepressant citalopram does not. TRIAL REGISTRATION: : ClinicalTrials.gov identifier: NCT01179568.

Assessing BDNF as a mediator of the effects of exercise on depression.

Brain-derived neurotrophic factor (BDNF) is associated with neuronal growth and reduced BDNF has been implicated in depression. A recent meta-analysis documented reliable effects of exercise on BDNF levels (Szuhany et al., 2015); although, few studies included participants with mental health conditions. In this study, we examine whether increased exercise was associated with enhanced BDNF response in depressed patients, and whether this change mediated clinical benefits. A total of 29 depressed, sedentary participants were randomized to receive either behavioral activation (BA) plus an exercise or stretching prescription. Blood was collected prior to (resting BDNF levels) and following an exercise test (pre-to post-exercise BDNF change) at four points throughout the study. Participants also completed depression and exercise assessments. BDNF increased significantly across all assessment points (p < 0.001, d = 0.83). Changes in BDNF from pre-to post-exercise were at a moderate effect for the interaction of exercise and time which did not reach significance (p = 0.13, d = 0.53), with a similar moderate, non-significant effect for resting BDNF levels (p = 0.20, d = 0.49). Contrary to hypotheses, change in resting BDNF or endpoint change in BDNF was not associated with changes in depression. In an intervention that included active treatment (BA), we could not verify an independent predictive effect for changes in BDNF across the trial. Overall, this study adds to the literature showing reliable effects of acute exercise on increasing BDNF and extends this research to the infrequently studied depressed population, but does not clarify the mechanism behind exercise benefits for depression. CLINICAL TRIALS REGISTRY (CLINICALTRIALS.GOV): NCT02176408, "Efficacy of Adjunctive Exercise for the Behavioral Treatment of Major Depression".

Impact of sleep on complicated grief severity and outcomes.

BACKGROUND: Complicated grief (CG) is characterized by persistent, impairing grief after losing a loved one. Little is known about sleep disturbance in CG. Baseline prevalence of subjective sleep disturbance, impact of treatment on sleep, and impact of mid-treatment sleep on CG and quality of life outcomes were examined in adults with CG in secondary analyses of a clinical trial. METHODS: Patients with CG (n = 395, mean age =53.0; 78% female) were randomized to CGT+placebo, CGT+citalopram (CIT), CIT, or placebo. Subjective sleep disturbance was assessed by a grief-anchored sleep item (Pittsburgh Sleep Quality Index: PSQI-1) and a four-item sleep subscale of the Quick Inventory of Depressive Symptomatology (QIDS-4). Sleep disturbance was quantified as at least one QIDS-4 item with severity ≥2 or grief-related sleep disturbance ≥3 days a week for PSQI-1. Outcomes included the Inventory of Complicated Grief (ICG), Work and Social Adjustment Scale (WSAS), and Clinical Global Impressions Scale. RESULTS: Baseline sleep disturbance prevalence was 91% on the QIDS-4 and 46% for the grief-anchored PSQI-1. Baseline CG severity was significantly associated with sleep disturbance (QIDS-4: p = .015; PSQI-1: p = .001) after controlling for comorbid depression and PTSD. Sleep improved with treatment; those receiving CGT+CIT versus CIT evidenced better endpoint sleep (p = .027). Mid-treatment QIDS-4 significantly predicted improvement on outcome measures (all p < .01), though only WSAS remained significant after adjustment for mid-treatment ICG (p = .02). CONCLUSIONS: Greater CG severity is associated with poorer sleep beyond PTSD and depression comorbidity. Additional research including objective sleep measurement is needed to optimally elucidate and address sleep impairment associated with CG.

Efficacy evaluation of exercise as an augmentation strategy to brief behavioral activation treatment for depression: a randomized pilot trial.

Exercise is an efficacious intervention for mental and physical health, but few studies have identified the additive benefits of exercise prescriptions for those undergoing empirically supported psychosocial treatment. Behavioral activation (BA) involves completing activities to improve mood, an ideal format for exercise augmentation. The purpose of this study was to examine the credibility and exploratory effect size estimates of augmenting BA with exercise. Thirty-one sedentary, depressed patients were randomized to receive nine sessions of BA+exercise or BA+stretching over 12 weeks. Monthly assessments of depression, quality of life, distress intolerance (DI), perceived stress, and exercise were conducted. Results demonstrated strong credibility and completion rates of BA+exercise, comparable to other PA interventions. Randomization did not contribute to differential exercise between conditions; all participants engaged in more exercise over time. Similarly, all participants significantly improved on all outcomes over time. Condition differences emerged for DI and perceived stress; the exercise condition evidenced greater improvements over time. Participants who engaged in more exercise also evidenced greater and faster declines in depression. BA may be a useful strategy for improving depression and increasing exercise. Additional explicit exercise prescriptions may not be necessary to improve depression but may be helpful for DI and stress. Clinical Trials Registry (clinicaltrials.gov): NCT02176408, "Efficacy of Adjunctive Exercise for the Behavioral Treatment of Major Depression".

Catching As and Zs: poor sleep quality predicts failures to increase studying time.

OBJECTIVE: We examined the association between sleep quality and academic performance by attending to university students' self-defined goals to increase studying behaviors over a four-week period. METHODS: We evaluated this association in 100 undergraduates, who self-elected to change their studying behaviors and were randomly assigned to one of three interventions (action planning, dissonance-based, or reflection). RESULTS: We found a negative association between the Pittsburgh Sleep Quality Index (PSQI) at baseline and subsequent studying time over the next four weeks, reflecting a small to medium effect size (partial r = .21). Depressive symptoms did not mediate the predictive influence of sleep quality on studying behavior. Intervention type did not influence the association between sleep quality and studying time. CONCLUSIONS: The predictive significance of sleep quality, in the context of the failure of effects for the randomized interventions, underscores the potential for intervening with sleep as part of efforts to improve academic behaviors.

The new TV dinner: effects of television programming content on eating and attitudes towards exercise.

Evidence exists for a negative influence of exercise/weight-loss television on explicit attitudes towards exercise. However, it is unclear if this is specific to viewing intense exercise or the overweight/obese status of the viewed exercisers. Additionally, exposure to exercise cues can induce people to eat more, reflecting compensatory eating in response to exercise cues rather than actual exercise. In this study, we examined the relative influence of viewing overweight/obese versus normal weight exercisers on eating (calories consumed) and attitudes towards exercise. 102 college students were randomized to view: 1) overweight/obese individuals engaging in vigorous exercise; 2) normal weight individuals engaging in vigorous exercise; or 3) no-exercise video with participants of various weight statuses (control condition). Participants subsequently completed a taste test assessing calories consumed; a computerized, implicit attitudes-towards-exercise task; and an explicit attitudes-towards-exercise questionnaire. Participants with higher BMIs and those viewing normal weight exercisers (vs. overweight/obese exercisers) ate significantly more. No significant effects were found for the interaction between BMI and video or for explicit or implicit attitudes towards exercise. This study extends findings of the impact of viewing vigorous exercise to eating behaviors. If replicated under naturalistic conditions, findings have implications for health promotion initiatives and television programming impacting overeating.

The impact of depressed mood, working memory capacity, and priming on delay discounting.

BACKGROUND AND OBJECTIVES: The impaired ability to delay rewards, delay discounting (DD), is associated with several problematic conditions in which impulsive decision-making derails long-term goals. Working memory (WM), the ability to actively store and manipulate information, is associated with DD. The purpose of this study was to examine the effect of cognitive priming on DD and to identify moderation of this effect dependent on degree of WM capacity (WMC) and depressed mood. METHODS: A WM task (n-back) was used as a cognitive prime before assessment of DD (Monetary Choice Questionnaire) and was compared to a similar prime from an inhibition task in a factorial design in 183 community participants. All participants completed a DD task and assessment of depressive symptoms (Beck Depression Inventory-II). Priming effects were evaluated relative to WMC of participants. RESULTS: Higher WMC and lower depression scores were associated with greater relative preference for larger, delayed rewards. The effects of a WM prime were moderated by WMC; benefits of the prime were only evident for individuals with lower WMC. No effects were found for an alternative inhibition task. LIMITATIONS: Limitations included depression scores mainly in subclinical range, use of hypothetical instead of real rewards in the DD task, and no examination of the time course of effects. CONCLUSIONS: This study provides support for the effectiveness of a brief WM prime in enhancing ability to delay rewards. Priming may be a useful adjunctive intervention for individuals with WM dysfunction or conditions in which impulsive decision-making may derail long-term goals.

Cognitive behavioral therapy for posttraumatic stress disorder in individuals with severe mental illness and borderline personality disorder.

Secondary analyses were performed on data from two randomized controlled trials of a cognitive behavioral therapy (CBT) program for posttraumatic stress disorder (PTSD) in individuals with severe mental illness (SMI) to examine the feasibility, tolerability, and effectiveness for individuals with borderline personality disorder (BPD). In Study 1, 27 participants received CBT or treatment as usual. In Study 2, 55 participants received CBT or a Brief treatment. Feasibility and tolerability of CBT, PTSD symptoms, and other mental health and functional outcomes were examined, with assessments at baseline, post-treatment, and two follow-up time points. CBT was feasible and tolerable in this population. Study 1 participants in CBT improved significantly more in PTSD symptoms, depression, and self-reported physical health. Study 2 participants in both CBT and Brief improved significantly in PTSD symptoms, posttraumatic cognitions, depression, and overall functioning, with those in CBT acquiring significantly more PTSD knowledge, and having marginally significantly greater improvement in PTSD symptoms. CBT for PTSD was feasible and tolerated in individuals with SMI, BPD, and PTSD, and associated with improvements in PTSD symptoms and related outcomes. Prospective research is needed to evaluate CBT in individuals with BPD, including comparing it with staged interventions for this population.

RANDOMIZED TRIAL OF D-CYCLOSERINE ENHANCEMENT OF COGNITIVE-BEHAVIORAL THERAPY FOR PANIC DISORDER.

BACKGROUND: Initial studies have provided a mixed perspective of the efficacy of d-cycloserine (DCS) for augmenting the efficacy of exposure-based cognitive behavioral therapy (CBT) for panic disorder. In this multicenter trial, we examine the magnitude of DCS augmentation effects for an ultra-brief program of CBT. METHODS: We conducted a double-blind, controlled trial at three treatment sites, randomizing 180 adults with a primary diagnosis of panic disorder to five sessions of treatment, with study pill (50 mg DCS or matching placebo) administered 1 hr prior to the final three sessions. Two booster sessions were subsequently provided, and outcome was assessed at posttreatment and 1-month, 2-month, and 6-month follow-up assessments. The primary outcome was the degree of reduction in the Panic Disorder Severity Scale. Additional analyses examined the role of severity and current antidepressant or benzodiazepine use as moderators of DCS augmentation effects. RESULTS: DCS augmentation resulted in significant benefit only early in the trial, with no beneficial effects of DCS augmentation evident at follow-up evaluations. We did not find that baseline severity or antidepressant or benzodiazepine use moderated DCS efficacy, but benzodiazepine use was associated with lower efficacy of CBT regardless of augmentation condition. CONCLUSIONS: Consistent with other recent multicenter trials, the benefit of DCS was less than indicated by pilot study and reflected an acceleration of treatment response evident at treatment endpoint, but no advantage in response over follow-up evaluation. Our results did not support severity or concomitant medication moderators observed in previous trials of DCS augmentation.

A confirmatory factor analysis of the MATRICS consensus cognitive battery in severe mental illness.

BACKGROUND: A recent factor analysis of Measurement and Treatment Research to Improve Cognition in Schizophrenia (MATRICS) Consensus Cognitive Battery (MCCB) data in a sample of schizophrenia-spectrum patients described a three factor model representing processing speed, attention/working memory, and learning; the social cognition measure was excluded from the analysis. The current analyses sought to replicate a three factor structure of the MCCB in a larger, more diagnostically diverse sample of participants. METHODS: Confirmatory factor analyses were performed to evaluate the factor structure of the MCCB in 300 outpatients with severe mental illness (54.3% schizophrenia-spectrum diagnoses) who were participants in three studies of cognitive remediation. Exploratory analyses were conducted to evaluate the concurrent prediction of symptoms from MCCB factor scores. RESULTS: The three factor structure of the MCCB demonstrated stronger model fit (χ(2)=14.53, p=0.75, SRMR=0.02, RMSEA=0.0, CFI=1.00, NNFI=1.01) than the unifactoral structure. Poorer cognitive performance across all three MCCB factors was significantly correlated with more severe overall and disorganization symptoms from the PANSS and BPRS, and less severe affective symptoms (e.g., depression, anxiety) in the overall sample. CONCLUSIONS: A three factor structure of the MCCB-composed of processing speed, attention/working memory, and learning-was replicated in a heterogeneous sample of persons with severe mental illness. Cognitive performance on the MCCB factors is associated with clinical symptoms.

Anxiety Sensitivity Uniquely Predicts Exercise Behaviors in Young Adults Seeking to Increase Physical Activity.

Individuals with elevated levels of anxiety sensitivity (AS) may be motivated to avoid aversive emotional or physical states, and therefore may have greater difficulty achieving healthy behavioral change. This may be particularly true for exercise, which produces many of the somatic sensations within the domain of AS concerns. Cross-sectional studies show a negative association between AS and exercise. However, little is known about how AS may prospectively affect attempts at behavior change in individuals who are motivated to increase their exercise. We recruited 145 young adults who self-identified as having a desire to increase their exercise behavior. Participants completed a web survey assessing AS and additional variables identified as important for behavior change-impulsivity, grit, perceived behavioral control, and action planning-and set a specific goal for exercising in the next week. One week later, a second survey assessed participants' success in meeting their exercise goals. We hypothesized that individuals with higher AS would choose lower exercise goals and would complete less exercise at the second survey. AS was not significantly associated with exercise goal level, but significantly and negatively predicted exercise at Time 2 and was the only variable to offer significant prediction beyond consideration of baseline exercise levels. These results underscore the importance of considering AS in relation to health behavior intentions. This is particularly apt given the absence of prediction offered by other traditional predictors of behavior change.