
Sleep quality is an important clinical construct, as poor sleep quality can be a symptom of many sleep and medical disorders. However, objective measures of sleep quality, such as polysomnography, are often expensive and time-consuming. As such, self-report questionnaires are often used to measure sleep quality. One such questionnaire is the Pittsburgh Sleep Quality Index, which asks participants to rate their sleep habits over the past month. Another method is the sleep diary, which requires individuals to record daily morning estimates of their sleep patterns. Various studies have investigated the association between pet ownership and sleep quality. For example, the Swedish CArdioPulmonary bIoimage Study (SCAPIS) investigated the association of pet ownership with self-reported sleep outcomes in 3788 to 4574 participants. The results of these studies have been mixed, with some finding no association between pet ownership and sleep, while others have found that pet ownership can both improve and impair sleep.
| Characteristics | Values |
|---|---|
| Number of participants in the Swedish CArdioPulmonary bioImage Study (SCAPIS) | 3788 to 4574 |
| Number of participants in the Whitehall II study | 6575 |
| Percentage of participants in the Whitehall II study who owned a pet | 2/7 |
| Percentage of pet owners in the Whitehall II study who were "very" attached to their pet | 64% |
| Average age range of participants in the Whitehall II study | 59 to 79 years |
| Average age range of participants in the SCAPIS study | 20 to 50 years |
| Average age of participants in a study involving 40 healthy dog owners without sleep disorders | 44 years |
| Number of captive wolves measured in a sleep EEG methodology experiment | 7 |
| Number of wolves from whom data from a second sleep occasion was collected | 3 |
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What You'll Learn

Pet ownership and sleep quality
There are several studies that have investigated the association between pet ownership and sleep quality. The results are mixed, with some studies finding a positive association between pet ownership and sleep quality, while others find no association or even a negative association.
One study that found a positive association between pet ownership and sleep quality is the Whitehall II study, which involved 6575 participants aged between 59 and 79 years. The study found that pet ownership was associated with less trouble falling asleep. Similarly, a study by Defelipe et al. (2020) based on self-reported data concluded that pet ownership was associated with better sleep quality in comparison to non-pet owners. This may be due to the positive impact that pets have on feelings of stress, anxiety, and depression, as well as the social support and increased physical activity levels that come with owning a pet.
On the other hand, the Swedish CArdioPulmonary bioImage Study (SCAPIS) found no association between general pet ownership and sleep. This study involved 3788 to 4574 participants and investigated the association of pet ownership with self-reported sleep outcomes, including sleep duration, sleep quality, and difficulty falling or staying asleep. The results of SCAPIS did not show any significant relationship between owning a pet and improved sleep.
Some studies have even found a negative association between pet ownership and sleep quality. For example, a study by Xin et al. (2021) found that pet owners had a higher prevalence of insomnia compared to non-pet owners, with cat owners having a higher prevalence than dog owners. Additionally, a study by Smith et al. found that adults who co-slept with pets took longer to fall asleep, were more likely to feel tired upon waking, and experienced more disturbances due to animal-related noises at night.
The conflicting results across studies may be due to various factors such as sample size, age range, subjective vs. objective sleep measurements, and adjustments for confounding variables. Additionally, the type of pet owned may also play a role, as some studies have found differences in sleep quality between dog and cat owners. For example, Hoffman et al. (2018) found that dog owners were more likely to adhere to a consistent sleep routine, which can be beneficial for strengthening circadian rhythms and improving sleep quality.
In conclusion, while pet ownership may offer various benefits that indirectly improve sleep quality, the direct association between owning a pet and better sleep remains inconclusive. More research is needed to fully understand the complex relationship between pet ownership and sleep, taking into account various factors such as pet type, sleeping arrangements, and individual differences.
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Pet companionship and sleep
Pets are a significant social determinant of health, and their influence on human daily behavioural routines can promote health and well-being. Companionship, security, physical activity, and relaxation are some of the mechanisms through which pets facilitate their owners' ability to fall asleep. Pet ownership can reduce anxiety and loneliness, ease symptoms of mental health conditions, help regulate emotions, and add to a sense of purpose and meaning in life.
Pet ownership has been associated with less trouble falling asleep, possibly due to the comfort and affection they provide. Their body warmth, steady heartbeat, and protective nature can make co-sleeping with them feel safe and cozy. The relaxing effect of interacting with a pet is also partially due to physical touch, so snuggling with a pet can ease the mind and promote tranquility.
However, the relationship between pet ownership and sleep is complex and may depend on various factors. For example, pet ownership was associated with feeling more tired after waking up, possibly because owners may be waking up due to their pets. Additionally, co-sleeping with pets has been associated with poorer sleep characteristics, such as poorer perceived sleep quality and greater insomnia severity. This negative impact was more pronounced when individuals owned multiple pets or dogs, rather than cats, and was not impacted by bondedness to pets.
Furthermore, while some people may prefer to sleep with their pets for safety and protection, sharing a bed with a pet may trigger allergies or make it harder to get a good night's sleep due to nighttime noise, heat, or movement. Ultimately, the decision to co-sleep with a pet depends on individual preferences, the pet's behaviour, and unique lifestyle factors.
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Pet ownership and sleep disorders
There is a complex relationship between pet ownership and sleep disorders. While pets may provide companionship, security, and relaxation, potentially aiding sleep, they may also disrupt sleep patterns and cause tiredness.
The Positive Impact of Pet Ownership on Sleep
The presence of pets can have a calming effect on their owners, providing a sense of companionship and security. This can be especially true for individuals with anxiety, depression, loneliness, or grief, where the comfort and routine of pet ownership can improve mental health and facilitate better sleep. Additionally, pet ownership often encourages physical activity, such as dog walking, which can positively impact sleep through regular exercise.
A study of 6,575 participants aged 59-79 in the Whitehall II cohort found that pet owners experienced less trouble falling asleep compared to non-pet owners. This effect was more pronounced in men. Another study involving 801 subjects aged 20-50 found that pet owners reported better subjective sleep quality.
The Negative Impact of Pet Ownership on Sleep
On the other hand, pet ownership can also lead to disrupted sleep patterns and increased tiredness. Pets may wake their owners during the night, resulting in fragmented sleep. A study of 40 healthy dog owners without sleep disorders found that sleep efficiency decreased when the dog shared their bed, as opposed to simply being in the same room.
Additionally, pet ownership has been associated with a higher prevalence of insomnia and certain sleep disorders. Dog owners, for example, were found to have a higher prevalence of sleep disorders, sleep apnea, feeling unrested, and not getting enough sleep compared to non-dog owners. Cat ownership was linked to a higher prevalence of snoring, trouble sleeping, and leg jerks.
The impact of pet ownership on sleep disorders is multifaceted and varies depending on individual circumstances. While pets can provide comfort and relaxation, aiding sleep, they can also disrupt sleep patterns and cause tiredness. Further research is needed to fully understand the complex dynamics between pet ownership and sleep quality.
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Pet ownership and mental health
While there is no clear association between pet ownership and improved sleep, pets are known to have a positive impact on their owners' mental health. Research has shown that pets can help alleviate anxiety and depression, reduce stress, and provide a sense of purpose.
Pet ownership can help manage anxiety by reducing levels of cortisol, the stress-related hormone, and increasing levels of serotonin, dopamine, and oxytocin, which are hormones that promote happiness and reduce stress. A CDC study found that children who owned pets displayed less anxiety than those who did not, with only half as many participants reporting anxiety. Furthermore, pets can help alleviate depression, which is often a contributing factor to sleep issues. In a study of 340 older adults in China, pet ownership was found to ease depression.
The companionship and emotional support provided by pets can reduce loneliness and provide comfort, joy, and stability, contributing to a healthier state of mind. Pets offer unconditional love and validation, which can help alleviate anxiety and other mental health issues. They also encourage mindfulness, helping their owners to live in the moment and focus on the present.
In addition to the emotional benefits, pet ownership can also promote physical activity, which positively impacts mental health. Dog owners, in particular, are more likely to engage in mild exercise, which can improve mental well-being. A study of 6575 participants aged 59 to 79 found that dog owners engaged in significantly more mild exercise than non-dog owners. Furthermore, pet-related activities can increase social engagement, fostering a sense of belonging and positively impacting mental health. For example, dog walking provides opportunities for social interaction and has been identified as a common way for people to meet others in their community.
Overall, while the impact of pet ownership on sleep is unclear, the mental health benefits of owning a pet are well-established and wide-ranging.
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Pet ownership and physical activity
While searching for "is pet used to measure people's sleep", I came across some interesting findings on the association between pet ownership and sleep. However, your prompt specifically asks about pet ownership and physical activity, which is discussed below.
Pet ownership has been found to have a positive influence on the physical activity levels of owners. Several studies have shown that dog owners are more physically active than non-dog owners, with dog walking being a significant contributor to their overall activity levels. This suggests that owning a dog encourages more physical activity, which can lead to better health outcomes.
A comprehensive meta-analysis investigating the impact of pet ownership on daily physical activity levels found that pet owners had a higher frequency of physical activity compared to non-pet owners. This effect was particularly notable in dog owners, who walked more than non-dog owners. The analysis included a wide range of participants, from children and adolescents to older adults, and considered various types of pets, not just dogs.
The positive impact of pet ownership on physical activity may be related to the additional responsibilities and care that pets require, such as walking and spending time outdoors. This is supported by a study of 191 dog-owning adults, 455 non-dog-owning adults, and 46 children in the UK, which found that dog owners were more likely to engage in recreational walking and walked for longer periods each week.
However, it is important to note that the relationship between pet ownership and physical activity is complex. Some studies have suggested that dog walking may replace other forms of physical activity, and it is unclear whether owning a dog directly causes people to be more active. Additionally, there may be other confounding variables, such as age, gender, socio-economic status, and the level of attachment to the pet, that influence the relationship between pet ownership and physical activity.
Furthermore, the impact of pet ownership on physical activity may vary depending on environmental factors, such as the availability of pet-friendly spaces and walking paths. This highlights the importance of considering both individual and environmental factors when examining the link between pet ownership and physical activity.
In conclusion, while pet ownership, particularly dog ownership, appears to have a positive influence on physical activity levels, more research is needed to fully understand the complex relationship between these variables. Further studies should aim to identify the specific factors that contribute to increased physical activity among pet owners and how these can be promoted to encourage healthier lifestyles.
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Frequently asked questions
Companionship, security, physical activity, and relaxation may help pet owners fall asleep. However, pet ownership is also associated with feeling more tired after waking up, possibly because pets may disrupt their owners' sleep.
Pet ownership may help ease depression, which is a common cause of sleep problems. However, pet owners may also be waking up due to their pets, leading to feelings of tiredness after waking up.
Various methods are used to measure the association between pet ownership and sleep. These include self-reported questionnaires, sleep diaries, sleep indexes such as the Pittsburgh Sleep Quality Index (PSQI), and objective measures such as accelerometry and polysomnography.
While dogs may promote mild exercise, which could positively impact sleep, having dogs on the bed has been associated with lower sleep efficiency than having them merely in the room.









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