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NCT Number: NCT05703165

Horse-assisted Intervention, Heart Rate Variability & Stress

In this study, the effects of an animal-assisted intervention on people with increased stress levels are investigated. The data collected will be compared with those of participants with high stress levels but without animal-assisted intervention (participants only observe nature) and with a control group consisting of people without stress exposure.

The study will be performed in the following setting: Questionnaire examination on chronic stress, questionnaire on current well-being and heart rate variability (HRV) measurement before the horse-assisted intervention, one HRV measurement and one questionnaire examination (POMS) on current well-being after the horse-assisted intervention, one questionnaire (POMS) on current well-being 5 days after the horse-assisted intervention.

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Key information

Age range

18 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Medical University of Graz

Graz, Styria, 8036, Austria

About this study

The early recognition of chronic stressors, which are often neglected by those affected until physical symptoms appear, is of essential importance. In addition to psychopharmacological therapy modalities, complementary methods such as animal-assisted intervention should also be considered in order to expand the therapeutic spectrum and thus prevent stress-associated consequential harms as early as possible.

Stress has gained importance in recent years not only in the medical context, but also due to its economic relevance. Chronic stress in particular leads to numerous medically relevant secondary diseases and to increased sick leaves and even permanent incapacity to work. One possible intervention to reduce stress could be animal-assisted intervention.

Primary hypothesis: The use of animal-assisted intervention in people diagnosed with chronic stressful situations will lead to measurable increases in heart rate variability.

Secondary hypothesis: The use of animal-assisted intervention in people diagnosed with chronic stressful situations leads to improved well-being (target parameter: POMS questionnaire)

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Male, female and diverse
  • Age between 18-75 years

Exclusion criteria

  • Animal hair allergies (especially horse hair allergies, fear of horses)
  • Acute severe psychiatric conditions (e.g. psychosis)
  • Persons, unable to give signed informed consent,
  • All persons, who have not signed the informed consent form.

Treatment and study plan

animal-assisted intervention

Behavioral

horse-assisted intervention

watching the countryside

Behavioral

just watching the countryside

Primary outcomes

  1. Change in heart rate variability

    Time frame: Time point 1: Baseline heart rate variability before the animal assisted intervention, Time point 2: heart rate variability immediately after the animal-assisted intervention

    Change in heart rate variability immediately after animal-assisted intervention when compared with baseline heart rate variability before the animal assisted intervention.

Secondary outcomes

  1. Change in state of mood states (Profile of Mood States Questionnaire)

    Time frame: Time point 1: Baseline state of mood states before the animal assisted intervention, Time point 2: state of mood states immediately after the animal-assisted intervention

    Change in state of mood states immediately after animal-assisted intervention when compared with baseline state of mood states before the animal assisted intervention (Profile of Mood States Questionnaire: minimum value= -24, maximum value = 177, lower scores indicative of people with more stable mood profiles).

Study contacts

Contact information is provided by the study sponsor or research team.

Andreas Baranyi, M.D.

CONTACT

[email protected]

004331638586241

Bettina Frühwirth

CONTACT

[email protected]

Sponsors and collaborators

Lead sponsor

Medical University of Graz

Other

Registry information

Official study title

Horse-assisted Intervention and Heart Rate Variability in Participants Under Stressful Conditions

Important dates

Study start
2026
Primary completion
2028
Study completion
2028
First posted
Jan 27, 2023
Registry last updated
Sep 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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