Acceptability of an adjunct equine-assisted activities and therapies program for veterans with posttraumatic stress disorder and/or traumatic brain injury

Animal-assisted interventions for military families: a systematic review

Introduction

The incorporation of animals into interventions focused on military families is a relatively new concept. Though animal-assisted interventions (AAIs) have been studied in the context of military veterans, few studies incorporate members of the military family or focus on the family members' experiences.

Methods

This systematic review investigates the effects of AAIs on the wellbeing of military family members beyond the veteran themselves through three aims: (1) by describing the characteristics of AAIs for military family members, (2) by evaluating the quality of the methodology present within the current literature, and (3) by identifying key concepts and knowledge gaps within the findings reported to date.

Results

A total of nine articles met the criteria to be included in the review. Though the inclusion criteria and search terms included all types of animal-assisted interventions, the only interventions represented were service dogs (n = 4) and equine-assisted services (n = 5).

Discussion

Findings suggest AAIs could be beneficial in areas such as communication, relational bonds, and psychosocial well-being. Though additional research is necessary, AAIs may be an effective complementary intervention for military families.

A Pilot Replication Study of Implementing an Equine-Assisted Services Program Within a VA Residential Substance Use Disorder Treatment Program

INTRODUCTION

Veterans have high rates of substance use disorders and other mental health conditions including post-traumatic stress disorder. Effective treatments for these conditions exist; however, high attrition rates and residual symptoms after completing treatment are common. Complementary treatment approaches could enhance treatment engagement and/or response among this population. We previously reported a study of one such intervention, an equine-assisted learning, and psychotherapy incorporating horses intervention provided to veterans admitted to a Veterans Health Care Administration residential substance abuse treatment program. The first aim of this study was to replicate the previous study assessing the safety, feasibility, and preliminary outcomes of this intervention. The second aim was to examine the effect of participants attending multiple intervention sessions.

MATERIALS AND METHODS

Participants were 94 veterans who participated in one to six sessions of a 3-4-hour program consisting of both equine-assisted learning and psychotherapy incorporating horses. Pre- and post-session administration of the Positive and Negative Affect Scale, State-Trait Anxiety Inventory, and Craving Experience Questionnaire was utilized to assess changes in affect, anxiety, and craving. Wilcoxon signed-rank or paired two-tailed t-tests were utilized for pre- to post-session comparisons of the outcome measures for sessions 1-4. Generalized linear mixed-effects (GLME) models were constructed to determine the impact of dosage. GLME models were constructed to determine the impact of dosage.

RESULTS

As with our previous study, the intervention was safe and feasible to utilize for this population. There were statistically significant pre- to post-session improvements, with medium-to-large effect sizes, for sessions 1-3 for negative affect and sessions 1 and 2 for positive affect, anxiety, and craving. The GLME models revealed no statistical significance for any of the predictors.

CONCLUSIONS

Taken together, this study and our previous investigation of this equine-assisted services intervention suggest that it is safe and feasible to utilize for veterans admitted to a residential substance abuse treatment program and we have now found short-term benefits in two separate studies. Thus, a randomized controlled trial of this intervention is warranted to demonstrate cause and effect and determine whether longer-term benefits are associated with the intervention. The finding that there was no additional benefit from attendance at more than two intervention sessions suggests that dose-response relationship studies of equine-assisted services interventions for veterans are needed.

Equine-assisted interventions for veterans with posttraumatic stress disorder: a systematic review

Equine-assisted intervention therapy has a nearly 60-year history and has been shown to have a significant positive impact on various types of psychotherapy patients. Due to an increase in research on EAT, the number of existing methods of equine-assisted intervention therapy has gradually increased. Based on existing literature on the application of equine-assisted intervention therapy on veterans with post-traumatic stress disorder (PTSD), this study examines the characteristics of several types of equine interventions and includes a systematic review of peer-reviewed literature on equine-assisted interventions for veterans with PTSD published over the past 5 years, from 2018 to the present. Ten articles met the review criteria and served as the primary data for analysis. Several types of equine-assisted interventions were shown to have a beneficial psychological impact on veterans. However, some limitations were also found in the studies, such as that the majority of experiments were constrained by small sample sizes. Equine-assisted intervention therapy has been shown to be effective, but further research is merited, in order to focus on the specific details and theories involved in equine-assisted interventions, and on the welfare of the horses involved in the therapy.

Potential Mechanisms of Action and Outcomes of Equine-Assisted Services for Veterans with a History of Trauma: A Narrative Review of the Literature

Equine-assisted services (EASs) are being increasingly used as complementary interventions for military veterans who have experienced trauma. However, there is limited evidence of benefit for this population and almost no literature describing the desired potential outcomes and possible mechanisms of action. The aim of this article is to address these gaps by reviewing the extant literature of animal-assisted interventions in general, and equine-assisted services in particular, with the goal of providing guidance for future investigations in the field. Currently, the field is in the early stage of scientific development, but published results are promising. Interventions that enhance treatment compliance and/or outcomes could benefit this population. Preliminary results, reviewed herein, indicate that EAS interventions might benefit the military veteran population by enhancing treatment engagement and therapeutic alliance, as well as by contributing to symptom reduction and resulting in various transdiagnostic benefits. It is recommended that future studies include exploration of potential beneficial outcomes discussed herein, as well as investigate suggested mechanisms of action.

Evaluation of a mindfulness and self-compassion-based psychotherapy incorporating horses for Veterans who have experienced trauma

OBJECTIVES

The primary aim of this pilot study was to assess the safety, feasibility, acceptability, as well as preliminary outcomes of a mindfulness and self-compassion-based psychotherapy incorporating horses (PIH) intervention, Whispers with Horses, for Veterans who had experienced trauma. Whispers with Horses was developed as a structured intervention that could be easily replicated for additional studies. If shown to be effective by future rigorous research, the aim is to disseminate a manualized version of the intervention to the field.

DESIGN

Prospective open trial.

SETTING

A large Veterans Administration healthcare system and local equine facilities.

INTERVENTION

A six-session PIH intervention that focused on participants developing or enhancing mindfulness and self-compassion skills in the context of an emerging horse-human relationship.

MAIN OUTCOME MEASURES

Safety, feasibility and acceptability were assessed, and psychological instruments were administered. Instruments utilized were the PTSD Checklist for DSM 5 (PCL-V), the Patient Health Questionnaire 9 (PHQ-9), the Positive and Negative Affect Scale (PANAS), the Acceptance and Action Questionnaire II (AAQ-II), and the Physical Activity Enjoyment Scale (PACES).

RESULTS

Subjects were 33 Veterans who were 52% male with a mean age of 46 years-old. There were no adverse outcomes to participants indicating the intervention was safe. Participants completed an average of 3.8 sessions with 24% completing all sessions indicating the intervention is feasible to use, and acceptable to, the population studied. The mean PACES score for all sessions together was 110.4, indicating subjects generally enjoyed participation. Preliminary outcome assessments revealed pre- to post-session significant improvements in affect and psychological flexibility for some sessions (p ranging from.001 -0.015). Pre- to post-intervention outcomes indicated significant improvements in depression (p = .003) and psychological flexibility (p = .005).

CONCLUSIONS

The Whispers with Horses intervention shows promise as a PIH for Veterans who have experienced trauma. More rigorous studies of this intervention are warranted. Also, additional investigations aimed at better understanding mechanisms underlying changes in psychological flexibility are justified.

A pilot observational study of horsemanship skills training for veterans with posttraumatic stress disorder

OBJECTIVES

Pilot assessment of an equine-assisted services intervention for Veterans with posttraumatic stress disorder.

DESIGN

Prospective cohort.

SETTING

A large Veterans Administration healthcare system.

INTERVENTION

Two sessions of instruction in horsemanship skills and two sessions of trail rides.

MAIN OUTCOME MEASURES

Safety and feasibility of recruitment, retention, providing the intervention, and measuring outcomes, as well as acceptability of the intervention to the population studied were the main outcome measures.

RESULTS

There were no injuries among the 18 participants, 6 staff, or 11 equines over the 3 months of the study. Eleven of 12 (92 %) planned intervention sessions were provided, with one being canceled due to weather. Out of approximately 1800 potential subjects, 21 were enrolled within three months and three dropped out before the first session. The mean number of sessions attended was 3 % and 52 % of participants completed all sessions. The mean PACES score for all sessions together was 109 (SD = 12), with a range of 50-126. Pre- to one-month post-intervention exploratory results indicated increased psychological flexibility (p = 0.008) and positive affect (p = 0.008) as measured by the Acceptance and Action Questionnaire II and the Positive and Negative Affect Scale, respectively as well as decreased PTSD (p = 0.001) and depressive symptoms (p = 0.017) as measured by the PTSD Checklist for DSM 5 and the Beck Depression Inventory, respectively.

CONCLUSIONS

Results suggest the intervention can be conducted with minimal risk. Further, it was feasible to recruit participants as well as provide the intervention and measure exploratory outcomes. Session attendance and PACES scores indicate acceptability to the Veteran population. The exploratory results will provide sample size estimates for future randomized controlled studies of this intervention Future studies should plan for missed sessions due to weather and consider compensating subjects to enhance retention. Finally, this work provides preliminary evidence that this intervention, without a mental health treatment component, might benefit the mental health of Veterans with PTSD.

Equine-Assisted Therapy for Posttraumatic Stress Disorder Among First Responders

Equine-assisted therapy has emerged as an adjunctive integrative health modality in treating individuals experiencing physiological and psychological distress. However, limited research exists to assess the efficacy of such treatments as a possible adjunct to psychological treatment for Posttraumatic Stress Disorder (PTSD) in first responders. The current pilot study examines the additive benefits of equine-assisted exposure for first responders suffering occupational incapacitation from operational-related trauma. Seven first responders participated in an 8-week, 90-minute, equine-assisted therapy program. Primary outcome measures (i.e., anxiety, depression, trauma, inflexibility and avoidance) were administered pre- and post-intervention. Additional measures examined feelings about the self and views towards aspects of the program. Findings suggested initial support for symptom reduction, particularly for depressive and trauma-related symptoms. Qualitative feedback from participants suggested significant benefits including increased sense of peace, reduced anxiety, mindfulness, and increased trust in the self and others. To our knowledge, this is the first study to directly examine clinical outcomes of first responders with PTSD participating in equine-assisted therapy and presents a promising adjunct to care in first responders moving forward.

Analysis of Trunk Neuromuscular Activation During Equine-Assisted Therapy in Older Adults

The three-dimensional movement of the horse in physical therapy is a valuable kinesio-therapeutic phenomenon that simultaneously affects several body systems, including particularly the neuromuscular system. However, the effects of equine-assisted services (EAS) on neuromuscular activation patterns in older adults have not been thoroughly investigated. In this study, we evaluated the impact of a 10-weeks EAS program on trunk muscles in older adults who used a saddle and placed their feet in stirrups for the first 15 minutes and out of stirrups for the remaining 15 minutes of 30-minute EAS sessions. We gathered electromyographic (EMG) data of the trunk muscles five times each on the first, fifth, and 10th sessions: pre-EAS and post-EAS on a stationary horse and at 1-minute, 15-minutes, and 30-minutes on a horse in motion. Participants were 20 adults, aged 60-79 years. We analyzed normalized EMG data with 5 (session time) by 3 (session number) analyses of variance (ANOVAs) with repeated measures and with Bonferroni's testing (p ≤ .05). There was a significant difference over the number of interventions for the right thoracic paravertebral muscle (p = .025) and session time effect for the left trapezius (p = .042), right thoracic paravertebral (p < .001), right and left multifidus (p < .001), and right and left rectus abdominis muscles (p < .001). Thus, trunk muscles in older adults showed complex neuromuscular activation synchronized with the horse's movement, which was influenced by session time and number of interventions. The practical implication of these findings is that EAS can reduce fall risk among elderly adults of both sexes.

A Pilot Observational Study of Implementing an Equine-A ssisted Services Program Within a VA Medical Center Residential Substance Use Disorder Treatment Program

INTRODUCTION

The aim of this observational pilot study was to assess the safety, feasibility, preliminary outcomes, and predictors of participant response as a result of implementing an equine-assisted intervention within a residential substance abuse treatment program at a large Veterans Administration medical center. A secondary aim was to evaluate psychological instruments for use in future, more rigorous studies. The overarching goal was to complete the necessary work to prepare for a large randomized controlled trial of this intervention for Veterans with addictive disorders.

MATERIALS AND METHODS

Participants were 33 Veterans, 29 males and 4 females, who participated in one 4-hour session of combined equine-assisted learning and equine-assisted psychotherapy during an admission to a residential substance abuse treatment program. Preintervention and postintervention instruments were utilized to assess changes in affect, anxiety, and craving. Demographic and diagnostic variables were evaluated for the potential to predict outcomes.

RESULTS

The intervention was safe and feasible to utilize as there were no adverse outcomes to patients, staff, or equines. The State-Trait Anxiety Inventory, Craving Experience Questionnaire, and Positive and Negative Affect Scale revealed preliminary findings of significant preintervention to postintervention decreases in anxiety, negative affect, and craving, as well as increased positive affect. Lastly, the presence or absence of a history of suicide attempts and/or suicidal ideation were predictive of some postintervention scores.

CONCLUSION

While more rigorous studies are needed, these results indicate that the intervention evaluated in this study is safe and feasible to utilize for Veterans admitted to a residential substance abuse treatment program. Furthermore, preliminary outcomes suggest that this intervention, and perhaps other equine-assisted interventions, has the potential to be beneficial to Veterans with addictive disorders as well as those at risk of suicide. The psychological instruments used in this intervention appear to be appropriate for use in future investigations. Additionally, more rigorous studies are warranted, and this work provides the necessary first steps needed to proceed with those investigations.

Equine-Assisted Activities and Therapies for Veterans With Posttraumatic Stress Disorder: Current State, Challenges and Future Directions

Posttraumatic stress disorder is common among military Veterans. While effective treatments exist, many Veterans either do not engage in treatment or fail to achieve full remission. Thus, there is a need to develop adjunctive complementary interventions to enhance treatment engagement and/or response. Equine-assisted activities and therapies (EAAT) are one category of animal assisted interventions that might serve this function. The aim of this article is to review the current state and challenges regarding the use of EAAT for Veterans with PTSD and provide a roadmap to move the field forward. EAAT hold promise as adjunctive complementary interventions for symptom reduction among Veterans with PTSD. Additionally, there is evidence that these approaches may enhance wellbeing in this population. At this time, many gaps in the literature exist and rigorous randomized controlled trials are needed before definitive conclusions can be drawn. The authors of this work provide recommendations as a roadmap to move the field forward. These include standardizing the EAAT nomenclature, focusing mechanism of action studies on the human-horse bond using biological metrics and using a standardized intervention model across studies.

Electromyographic analysis of stomatognathic muscles in elderly after hippotherapy

The aging process affects the entire human body, including the stomatognathic system, and can trigger not only occlusal but also postural imbalances involving other muscular chains. Hippotherapy has been used to promote cervical, postural, and balance control in individuals with diverse impairments. The present study used electromyography to evaluate the masseter and temporal muscles in an elderly population pre- and post-hippotherapy. Participants included 17 individuals, mean age 66,5±7 years. Electromyographic recording of the bilateral masseter and temporal muscles was performed during the postural resting condition and activities that involved the active participation of these muscles in different conditions. The practitioner performed no other type of activity or exercise during the intervention because the objective is to evaluate the effect of the three-dimensional movement provided by the horse. Raw electromyographic data were tabulated using commercially available software (IBM® SPSS® Statistics 234.0) and subjected to statistical analysis, in which p ≤ 0.05 was considered to be statistically significant. Post-hippotherapy, there was lower electromyographic activity for the masseter and temporalis muscles in all the static mandibular tasks, with significant effect for time for the right temporal muscle (p = 0.038), the left temporal muscle (p = 0.028) and in the all dynamic mandibular tasks for the left temporal muscle (p = 0.025) and the left masseter muscle (p = 0.027). Hippotherapy promotes a reduction in the myoelectric activity of the masticatory muscles of elderly individuals.