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Clinical Trial Summary

Equine-assisted interventions (EAI) are an emerging form of alternate psychotherapy that has been increasingly found to produce improvements in various treatment outcomes. However, the paucity of randomized-controlled trials (RCTs) in the EAI literature prevents any definitive conclusions to be made about the general effectiveness of EAI. This study tests whether one form of EAI, Equine-Assisted Psychotherapy (EAP), reduces aggression and alters risk factors associated with aggression in young adults, and whether emotion regulation mediates any effect of EAP on aggression. In a single-blind RCT, undergraduate students will be randomly assigned to either an intervention group, an active-control group, or a placebo-control group. Participants in the intervention group will undergo a 5-week EAP program consisting of structured, interactive activities with horses followed by a clinical processing component. Participants in the active control group will undergo a 5-week program that only involves interactions with horses without any clinical input (i.e. commonly coined as animal-assisted activities). Participants in the placebo-control group will undergo 5 weeks of 1-hour movie sessions related to horses. There will be three waves of data collection measuring key outcome variables - t1 before the 1st session, t2 after the 3rd session, and t3 after the final session. Participants will complete questionnaires assessing the key outcomes of aggression, emotional well-being and academic performance. Other risk factors of antisocial behaviour such as psychopathy, level of empathy, emotion regulation and executive functioning will also be measured. To the author's knowledge, the current study is the first in Singapore to investigate if EAP can lower aggression levels and alter psychological risk factors for aggression in healthy young adults. In turn, these results could help inform the utility and validity of EAP in the forensic populations.


Clinical Trial Description

The EAP program will span over the duration of 5 weeks, each week having a 1-hour session. 50 minutes will be allocated to interacting with the horses and the activities while the remaining 10 minutes will be allocated to the clinical processing of the behavior, thoughts and emotions that are observed during the session. This processing will be guided by trained therapists who hold the relevant qualifications (i.e. equine-assisted psychotherapy certification). 2 horses (an Oldenburg and a pony, aged 19 and 14 respectively), 2 therapists, and 2 experienced horse handlers will be present throughout the sessions. Each 1-hour session will consist a maximum of 8 participants that will be split into two groups of 4 such that 1 horse, 1 therapist and 1 experienced horse handler are attached to them. The design of the experiment will be a single-blind Randomized Controlled Trial. Participants will be told that this study aims to investigate the therapeutic effects of two different EAP programs (either watching video clips related to horses or actual interactions with horses) and that they will be randomly assigned to either one. In actuality, participants are randomly assigned to either an intervention group, an active-control group or a placebo-control group. 3 time points of data collection are measured throughout the 5-week duration - t1 before the 1st session, t2 after the 3rd session, and t3 after the final session. All participants will go through the same questionnaire administered at each time point during the 5-week duration regardless of their assigned group. Participants in the intervention group will go through the 5-week EAP program consisting of the clinical processing following some activities found in EAP manuals. Participants in the active-control group will undergo a 5-week program that only involves interactions with horses without any clinical input (i.e. commonly coined as animal-assisted activities). Participants in the placebo-control group will undergo a 5-week movie screening of 1 hour each session that is related to horses in the lab. Participant recruitment will begin as soon as possible once approval has been given and should not take longer than 2 weeks to recruit a total of 120 undergraduate students from both NUS and NTU. The 5-week intervention program will be briefly structured as such: Session 1: Introduction to grooming and horse safety This introductory session is aimed at getting participants to be familiar with the safety features when working with these horses as well as to be attentive to the warning cues that horses display that is indicative of their mood. Once that has been briefed, participants will be taught how to groom the horse as part of learning natural horsemanship skills. These includes brushing and cleaning the hooves of the horse. Session 2: Review of grooming, learning to put on halter and leading the horse The second session is built upon the previous session in that reviews of grooming and horse safety will continually be surfaced throughout the program as such lessons is always an ongoing process. On top of that, participants will be taught how to put on a halter on the horse and to lead the horse. The session ends with a modified activity called Catch and Release which allows participants to have personal interaction with the horse. Session 3: Review of grooming and Give-and-Take The third session is more focused on the importance of proper communication as this helps convey the investigators intentions across with greater accuracy while still remaining respectful and mindful of the other party on the receiving end. After the grooming segment, participants will engage in an activity called Give-and-Take which work improving communication in a non-verbal manner only through the string they are provided with to guide the horse. Session 4: Review on grooming and Life's Little Obstacles This session is aimed at utilizing participants' critical thinking skills to achieve the objective of the activity. This is meant to push participants' out of their comfort zones which could bring about feelings of frustration and worry that can be processed after the activity is over. The activity that is meant to create such a roadblock is the Life's Little Obstacles whereby participants are told to make the horse jump over a low obstacle with multiple restrictions. Session 5: Review on grooming, Equine Billiards, and closing This final session is aimed at utilizing participants' problem-solving skills through the use of non-verbal communication. This is done using the Equine Billiards activity whereby the lessons learnt from previous sessions would culminate in this one task. Following the processing of the activity after it ends, the therapy team and participants would gather in a circle for the program closure to integrate whatever they have learnt from the past 5-weeks. GPower 3.1 was used to calculate an appropriate sample size for a medium effect size of 0.15, power at 0.95 and alpha error probability at 0.05. For a multiple linear regression analysis with 2 tested predictors and total number of 4 predictors, the calculation yielded a total sample size of 119. This number was rounded up to 120. All data will be analyzed using SPSS version 22. Some potential analyses include multiple linear regression, ANCOVAs and their respective post-hoc t-tests, paired-sample t-tests to demonstrate significant changes between pre and post intervention groups, and PROCESS Macro for the mediator analysis. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04200612
Study type Interventional
Source National University, Singapore
Contact
Status Completed
Phase N/A
Start date January 20, 2020
Completion date November 6, 2020

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