The cortisol awakening response in a 3 month clinical trial of service dogs for veterans with posttraumatic stress disorder.

Recent literature suggests that service dogs may be a valuable complementary intervention option for posttraumatic stress disorder (PTSD) among military veterans due to the potential influence on stress response dysregulation. The aim of this short-term longitudinal study was to quantify the impact of service dogs in US military veterans with PTSD with particular attention to the cortisol awakening response. A sub aim of the study was to empirically evaluate the physiological effects of PTSD service dogs on veteran partners. We conducted a clinical trial (ID: NCT03245814) that assessed the cortisol awakening response for 245 participants at baseline and 3 months follow-up across an intervention group (service dog: veterans n = 88, partners n = 46) and control group (usual care: n = 73, partners n = 38). A total of N = 161 veterans and N = 84 partners collected whole saliva samples via a passive drool collection immediately upon waking, 30 min after waking, and 45 min after waking on three consecutive weekdays at baseline and again at follow-up. Mixed model repeated measures (MMRM) with a fixed effect of the intervention group (service dog or control) were utilized. Covariates considered for the model included time of awakening, sleep duration, sleep efficiency, prior day experiences (measured via ecological momentary assessment), traumatic brain injury, age, gender, race, ethnicity, socioeconomic status, smoking status, alcohol use, physical health, and body mass index. A total of 3951 salivary samples were collected (veterans: 2613, partners: 1338). MMRM results demonstrated that veterans with a service dog had a statistically significant higher cortisol awakening response, including the area under the curve with respect to both increase (AUCi, ß = 1.46, p = 0.046) and absolute increase (AINC, ß = 0.05, p = 0.035). Results were not statistically significant for partners. Findings suggest that veterans with service dogs have a higher, less blunted CAR in comparison to veterans receiving usual care alone. In veterans with a blunted morning cortisol response, service dog placement could help boost their morning cortisol response.

Psychiatric service dog placements are associated with better daily psychosocial functioning for military veterans with posttraumatic stress disorder.

OBJECTIVE: Psychiatric service dog placements may benefit psychosocial functioning for veterans with posttraumatic stress disorder (PTSD), however, these effects have never been examined directly in daily life. This nonrandomized longitudinal clinical trial quantified the efficacy of psychiatric service dogs for daily psychosocial functioning among N = 168 veterans with PTSD using ecological momentary assessment (EMA). METHOD: EMA data were collected twice daily for 2 weeks at each assessment period (0 and 3 months), totaling 9,408 survey responses (2 Assessments × 14 Days × 2 Prompts × 168 Participants). RESULTS: At follow-up, regression analysis identified associations between service dog placement and better perceived social interaction quality (ß = 0.42, p < .05), better affect (negative affect: ß = -2.64, p < .001; positive affect: ß = 2.44, p < .001), and lower odds of panic attacks (OR = 0.68, p < .05). Social participation results were mixed: placements were associated with greater activity participation (ß = 3.21, p < .001) but lower odds of being away from home (OR = 0.77, p < .05), indicating possible support for anecdotes that public stigma is an obstacle to community participation. CONCLUSIONS: Results further revealed that the service dog's trained tasks may be particularly important for social functioning outcomes, and the service dog's presence for emotional functioning outcomes. Findings highlight a need for education surrounding service dog etiquette and reveal potential mechanisms underlying psychiatric service dog placements. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Posttraumatic stress disorder service dogs and the wellbeing of veteran families.

Background: Benefits and challenges associated with service dogs for veterans with posttraumatic stress disorder (PTSD) may extend beyond veterans to their families. Objective: The purpose of the current study is to evaluate the impact of veterans' PTSD service dogs on spouses and families in a parallel-group, longitudinal design with assessments at baseline and three months follow-up. Method: A total of 88 United States military veteran spouses completed a survey composed of multiple standardized measures at baseline and three months later. In the intervention group (n = 48), veterans received service dogs shortly after baseline while the waitlist control group (n = 40) did not. Results: Linear regression analyses demonstrated significantly lower caregiver satisfaction, higher caregiver burden and higher participation in life activities among spouses who had service dogs in their homes compared to those on the waitlist. Though not significant, small effect sizes were present among additional measures. Conclusion: Results suggest that although previous literature demonstrates service dogs may offer significant improvements for veterans, spouses and children may not experience those same benefits. Clinicians should consider how to prepare veteran spouses and families for integrating service dogs into their home. Future studies should explore family-focused approaches for service dog integration, defining an optimal strategy for the benefit of the entire family. HIGHLIGHTS: Though service dogs may improve wellbeing for veterans with posttraumatic disorder, families of veterans may not experience those same benefits. Researchers and clinicians should consider how to best prepare veteran families for integrating service dogs into their homes.Though posttraumatic stress disorder (PTSD) service dogs are trained specifically for veterans, recent studies have demonstrated that their impact may go beyond veterans themselves (McCall, Rodriguez, Wadsworth, Meis, & O'Haire, 2020; Nieforth, Craig, Behmer, MacDermid Wadsworth, & O'Haire, 2021). PTSD service dogs may provide both benefits and challenges for veteran families.

Antecedentes: Los beneficios y desafíos asociados con los perros de asistencia para veteranos con trastorno de estrés postraumático (TEPT) pueden extenderse más allá de los veteranos a sus familias. Objetivo: El propósito del estudio actual es evaluar el impacto de los perros de asistencia en el TEPT de cónyuges y familias de veteranos en un diseño longitudinal de grupos paralelos con evaluaciones al inicio y a los tres meses de seguimiento. Método: Un total de 88 cónyuges de veteranos militares de los Estados Unidos completaron una encuesta compuesta por múltiples medidas estandarizadas al inicio y tres meses después. En el grupo de intervención (n = 48), los veteranos recibieron perros de asistencia poco después del inicio, mientras que el grupo de control en lista de espera (n = 40) no lo hizo. Resultados: Los análisis de regresión lineal demostraron una satisfacción del cuidador significativamente menor, una mayor carga del cuidador y una mayor participación en las actividades de la vida entre los cónyuges que tenían perros de asistencia en sus hogares, comparado con los que estaban en la lista de espera. Aunque no significativos, pequeños tamaños de efecto estuvieron presentes entre las medidas adicionales. Conclusión: Los resultados sugieren que aunque la literatura previa demuestra que los perros de asistencia pueden ofrecer mejorías significativas para los veteranos, es posible que las cónyuges y sus hijos no experimenten los mismos beneficios. Los clínicos deben considerar cómo preparar a las cónyuges y familias de veteranos para integrar perros de asistencia en sus hogares. Los estudios futuros deberían explorar enfoques centrados en las familias para la integración del perro de asistencia, definiendo una estrategia óptima para el beneficio de toda la familia.

Survey of international academic centers and institutes focused on human-animal bond: Scope and landscape in 2021.

Routine surveying of academic centers focused on the human-animal bond is critical to understand the trajectory of the field and to create an environment where centers can learn from one another and build collaborations. The purpose of this manuscript was to report the findings of a survey of these human-animal bond centers, to summarize the status of the field, and to identify changes within the field since 2016. Survey questions concentrated on the demographic characteristics, engagement programs, educational opportunities, and research focuses of the centers. Findings suggest that the field continues to grow as one-third of human-animal bond centers are less than 10 years old. The number of centers that participated in this survey increased by 31% compared to the previous survey (O'Haire et al., 2018). Centers have developed a variety of engagement programs, including animal-assisted intervention and companion animal education programs. About half of the centers (48%) offer degree programs and about one quarter of the centers (24%) offer certificate programs. Most centers (95%) focus their research on companion animals with the most studied companion animal being dogs (95%). The most frequent data collection method was surveys (86%). Qualitative analyses, behavior measures, and physiological measures were also common. The most notable changes from the 2016 survey include overall growth of the field (indicated by the establishment of new centers) and a shift in the specialty area of directors, moving from 44% of directors being veterinarians in 2016 survey to 90% having a human-focused specialty in the 2021 survey. Most centers' research focused on animal-assisted interventions which is consistent with the previous survey. As the field of the human-animal bond continues to grow and more centers emerge, ongoing evaluation of offerings is important to track changes, identify needs, and foster success.