Dog owners who stroke their pets experience lower physiological stress during difficult tasks, according to researchers at the University of Innsbruck in Austria.
The scientists discovered that tactile contact with an animal buffers the human body against subsequent pressure, stabilizing heart rhythms and preserving healthy brainwave patterns when challenges arise.
The findings, reported by European health outlet rynekzdrowia.pl, were published in the peer-reviewed scientific journal Biological Psychology. While companion animals have shared human households for thousands of years as sources of comfort and emotional support, the investigation provides measurable physiological evidence of how physical touch alters the body's involuntary nervous responses.
Testing stress under pressure
To examine whether physical contact could alleviate stress symptoms, researchers recruited 64 dog owners to participate alongside their pets. Each owner was subjected to a rigorous evaluation designed to trigger intense psychological strain, featuring rapid questions on general knowledge and mathematics.
Participants received only a few seconds to answer each problem while an observer watched them closely and provided exclusively negative feedback. Volunteers were also told that their performances were being recorded on video and would undergo formal evaluation later.
Following the stressful assessment, the participants spent five minutes in a room with their dogs under one of two conditions. In one group, owners were encouraged to stroke and pet their animals freely. In the comparison group, dogs were kept on a short leash that prevented any physical touch between owner and pet.
Heart rates and brain activity
Throughout the trials, scientists tracked cardiac activity and monitored brainwave patterns using electroencephalography, commonly known as an EEG. The test tasks initially provoked clear physiological distress across the entire group, causing pulse rates to climb, heart rate variability to drop, and participants to report feeling worse.
Heart rate variability reflects the variation in time between consecutive heartbeats, serving as a primary indicator of how well the autonomic nervous system manages stress. Higher variability typically signals a resilient, relaxed state, whereas suppressed variability points to sustained physical tension.
Surprisingly, stroking a dog did not accelerate the body's immediate physical recovery in the moments directly following the first test. Instead, the team identified a distinct pattern during a subsequent stress task, where participants who had stroked their dogs exhibited significantly milder physical strain.
Those who had petted their dogs maintained lower pulse rates, higher heart rate variability, and less suppression of alpha brainwaves during the next trial. Alpha waves on an EEG are electrical oscillations linked to calm, alert wakefulness, and their preservation indicates lower anxiety under pressure. Participants who rested beside a leashed dog without physical contact did not experience these physiological benefits to the same extent.
Physical touch and pet wellbeing
The authors concluded in the journal that touch appeared to be a vital element of human-animal interaction that could directly contribute to the wellbeing advantages associated with pet ownership.
The researchers acknowledged several limitations in their work, noting that the sample consisted of 64 volunteers, the majority of whom were women. Because of this demographic focus, the team cautioned that stroking a dog cannot be assumed to reduce stress across every situation. They also noted that physical movement itself, which is an inherent part of petting an animal, may contribute to the calming effect.
Despite those caveats, the study offers fresh evidence that tactile engagement plays an important role in how the body regulates stress. The authors suggested that spending a few minutes petting a companion animal before an intense exam or a demanding job interview could help people manage acute anxiety and perform at their best.
Hormonal bonds in cats
The Austrian findings follow separate research indicating that the emotional bond between domestic cats and their human owners operates on a measurable chemical level.
In a month-long study tracking daily interactions between owners and cats, scientists detected a positive hormonal connection involving oxytocin. Often referred to as the love hormone, oxytocin is a neurochemical closely associated with social bonding, empathy, tenderness, and feelings of happiness.
Researchers identified the hormonal shifts as the first objective confirmation of a shared physiological link between felines and the people who care for them, reinforcing the growing body of science on how companion animals influence human biology.
