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Summary: Cortisol levels associated with stress are reduced after interacting with cats and dogs, researchers report.
Source: Washington State University
College is stressful. Students have classes, papers, and exams. But they also often have work, bills to pay, and so many other pressures common in modern life.
Many universities have instituted “Pet Your Stress Away” programs, where students can come in and interact with cats and/or dogs to help alleviate some of the strain.
Scientists at Washington State University have recently demonstrated that, in addition to improving students’ moods, these programs can actually get “under the skin” and have stress-relieving physiological benefits.
“Just 10 minutes can have a significant impact,” said Patricia Pendry, an associate professor in WSU’s Department of Human Development.
“Students in our study that interacted with cats and dogs had a significant reduction in cortisol, a major stress hormone.”
Pendry published these findings with WSU graduate student Jaymie Vandagriff last month in AERA Open, an open access journal published by the American Educational Research Association.
This is the first study that has demonstrated reductions in students’ cortisol levels during a real-life intervention rather than in a laboratory setting.
The study involved 249 college students randomly divided into four groups. The first group received hands-on interaction in small groups with cats and dogs for 10 minutes. They could pet, play with, and generally hang out with the animals as they wanted.
To compare the effects of different exposures to animals, the second group observed other people petting animals while they waited in line for their turn. The third group watched a slideshow of the same animals available during the intervention, while the fourth group was “waitlisted.”
Those students waited for their turn quietly for 10 minutes without their phones, reading materials, or other stimuli, but were told they would experience animal interaction soon.
Several salivary cortisol samples were collected from each participant, starting in the morning when they woke up. Once all the data was crunched from the various samples, the students who interacted directly with the pets showed significantly less cortisol in their saliva after the interaction. These results were found even while considering that some students may have had very high or low levels to begin with.
“We already knew that students enjoy interacting with animals and that it helps them experience more positive emotions,” Pendry said. “What we wanted to learn was whether this exposure would help students reduce their stress in a less subjective way. And it did, which is exciting because the reduction of stress hormones may, over time, have significant benefits for physical and mental health.”
Now Pendry and her team are continuing this work by examining the impact of a four-week-long animal-assisted stress prevention program. Preliminary results are very positive, with a follow-up study showing that the findings of the recently published work hold up.
They hope to publish the final results of that work in the near future.
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Source: Washington State University Media Contacts: Patricia Pendry – Washington State University Image Source: The image is credited to WSU.
Original Research: Open access “Animal Visitation Program (AVP) Reduces Cortisol Levels of University Students: A Randomized Controlled Trial”. Patricia Pendry, Jaymie L. Vandagriff. AERA Open. doi:10.1177/2332858419852592
Animal Visitation Program (AVP) Reduces Cortisol Levels of University Students: A Randomized Controlled Trial
University students report high levels of stress. Although causal work is limited, one popular approach to promote stress relief is animal visitation programs (AVPs). We conducted a randomized trial (N = 249) examining effects of a 10-minute AVP on students’ salivary cortisol levels. Undergraduate students were randomly assigned to one of four conditions: hands-on AVP (petting cats and dogs; n = 73), AVP observation (watching others pet animals; n = 62), AVP slideshow (viewing images of same animals; n = 57), or AVP waitlist (n = 57). Participants collected salivary cortisol upon waking, and two samples were collected 15 and 25 minutes after the 10-minute condition, reflecting cortisol levels at the beginning and end of the intervention. Controlling for students’ basal cortisol, time awake, and circadian pattern, students in the hands-on condition had lower posttest cortisol compared to slideshow (β = .150, p = .046), waitlist (β = .152, p = .033), and observation (β = .164, p = .040). A 10-minute college-based AVP providing hands-on petting of cats and dogs provides momentary stress relief.
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