Evaluation of an open source method for calculating physical activity in dogs from harness and collar based sensors

Abstract Background The ability to make objective measurements of physical activity in dogs has both clinical and research applications. Accelerometers offer a non-intrusive and convenient solution. Of the commercialy available sensors, measurements are commonly given in manufacturer bespoke units and calculated with closed source approaches. Furthermore, the validation studies that exist for such devices are mounting location dependant, not transferable between brands or not suitable for handling modern raw accelerometry type data. Methods This paper describes a validation study of n = 5 where 4 sensors were placed on each dog; 2 on a harness and 2 on a collar. Each position held two sensors from different manufacturers; Actigraph (which has previously been validated for use on the collar) and VetSens (which provides un-filtered accelerometry data). The aims of the study was to firstly evaluate the performance of an open-design method of converting raw accelerometry data into units that have previously been validated. Secondly, comparison was made between sensors mounted at each location for determining physical activity state. Results Once the raw actigraphy data had been processed with the open-design method, results from a 7 day measurement revealed no significant difference in physical activity estimates via a cutpoint approach between the sensor manufacturers. A second finding was a low inter-site variability between the ventral collar and dorsal harness locations (Pearsons r2 = 0.96). Conclusions Using the open-design methodology, raw, un-filtered data from the VetSens sensors can be compared or pooled with data gathered from Actigraph sensors. The results also provide strong evidence that ventral collar and dorsal harness sites may be used interchangeably. This enables studies to be designed with a larger inclusion criteria (encompassing dogs that are not well suited for wearing an instrumented collar) and ensures high levels of welfare while maintaining measurement validity

Understanding how dogs encourage and motivate walking: cross-sectional findings from RESIDE

Background Many people live with dogs but not all walk with them regularly. This study examines the demographic and behavioural factors that contribute towards owners reporting having a strong sense of encouragement and motivation to walk provided by their dogs, which we call ‘the Lassie effect’. Methods Data was collected from 629 dog owners participating in the RESIDE cross-sectional survey in Perth, Western Australia. Multivariable logistic regression analyses of factors associated with two separate outcome survey items ‘Dog encouragement to walk’ (how often dog encouraged me to go walking in last month) and ‘Dog motivation to walk’ (Having a dog makes me walk more). Results Owning a larger dog; having an increased level of attachment to dog; knowing dog enjoys going for a walk; believing walking keeps dog healthy; and having high social support from family to go walking, were positively associated with both outcomes ‘dog encouragement to walk’ and ‘dog motivation to walk’. Conversely, reporting the presence of children at home; that the child is the main person who walks with the dog; and perceiving dog-specific barriers to walking with dog daily; were negatively associated with both outcomes. In addition, ‘Dog motivation to walk’ only was positively associated with a belief walking reduces barking, and negatively with owning a dog that is overweight or a dog that is too old/sick. Reporting that the spouse/partner is main person who walks with the dog was also negatively associated with ‘dog motivation to walk’, as was increased perceived access to public open spaces with dog-supportive features. Conclusions There are both dog and owner factors that are associated with an owner’s sense of encouragement, and motivation to walk the dog, which in turn has been found to be associated with dog waking behaviour. These factors may be targeted in future interventions to increase and maintain physical activity levels of both people and pets

Dog owners are more likely to meet physical activity guidelines than people without at dog: An investigation of the association between dog ownership and physical activity levels in a UK community

Previous research suggests that dog owners are slightly more physically active than those without dogs, but have only studied one household member, and it is unclear whether time spent dog walking replaces other physical activity (PA). A survey of 191 dog owning adults (DO), 455 non-dog owning adults (NDO), and 46 children, living in 385 households in West Cheshire UK, was conducted in July-August 2015. Objective (accelerometer) validation occurred on a subset (n=28 adults). Survey PA outcomes were modelled using hierarchical logistic and linear multivariable regression modelling, accounting for clustering of participants in households. DO were far more likely than NDO to report walking for recreation (OR=14.35, 95% CI=5.77-35.79, P<0.001), and amongst recreational walkers walked for longer per week (RR=1.39, 95%CI=1.27-5.91, P<0.001). Other PA undertaken did not differ by dog ownership. The odds of DO meeting current physical activity guidelines of 150mins per week were four times greater than for NDO (OR=4.10, 95% CI=2.05-8.19, P<0.001). Children with dogs reported more minutes of walking (P=0.01) and free-time (unstructured) activity (P<0.01). Dog ownership is associated with more recreational walking and considerably greater odds of meeting PA guidelines. Policies regarding public spaces and housing should support dog ownership due to PA benefits

Socio-demographic factors associated with pet ownership amongst adolescents from a UK birth cohort

Background: In developed nations, pet ownership is common within families. Both physical and psychological health benefits may result from owning a pet during childhood and adolescence. However, it is difficult to determine whether these benefits are due to pet ownership directly or to factors linked to both pet ownership and health. Previous research found associations between a range of socio-demographic factors and pet ownership in seven-year-old children from a UK cohort. The current study extends this research to adolescence, considering that these factors may be important to consider in future Human-Animal Interaction (HAI) research across childhood.Results:The Avon Longitudinal Study of Parents and Children (ALSPAC) collected pet ownership data prospectively via maternal reports from gestation up to age 10 years old and via self-report retrospectively at age 18 for ages 11(n= 3063) to 18 years old (n= 3098) on cats, dogs, rabbits, rodents, birds, fish, tortoise/turtles and horses. The dataset also contains a wide range of potential confounders, including demographic and socio-economic variables.The ownership of all pet types peaked at age 11 (80%) and then decreased during adolescence, with the exclusion of cats which remained constant (around 30%), and dogs which increased through 11–18 years (26–37%). Logistic regression was used to build multivariable models for ownership of each pet type at age 13 years, and the factors identified in these models were compared to previously published data for 7 year-olds in the same cohort. There was some consistency with predictors reported at age 7. Generally sex, birth order, maternal age, maternal education, number of people in the household, house type, and concurrent ownership of other pets were associated with pet ownership at both 7 and 13 years (the direction of association varied according to pet type).Factors that were no longer associated with adolescent pet ownership included child ethnicity, paternal education,and parental social class.Conclusions:A number of socio-demographic factors are associated with pet ownership in childhood and adolescence and they differ according to the type of pet, and age of child. These factors are potential confounders that must be considered in future HAI studies

Assessment of Detection of Potential Dog-Bite Risks in the Home Using a Real-Time Hazard Perception Test

Dog bites are a serious public health concern internationally and children are often at particular risk of them. Because bites to children often occur during apparently benign interactions with a parent present, the need for dog-bite prevention approaches to address adults’ awareness of, and supervision of, child–dog interactions has been highlighted. The aim of this study was to evaluate a hazard perception test of potential dog-bite hazards within a home setting. Six hazards were incorporated in a 2-minute 41-second video, which was embedded into a web-based interface that enabled respondents to identify hazards by clicking the mouse button or tapping the screen of a tablet computer as the video played. The 268 volunteer respondents also completed a short questionnaire. These respondents were predominantly female and appeared more likely to have undertaken higher education and have greater experience with dogs than the general population. Almost one-third (31.8%) of respondents identified all six hazards, and a further quarter (24.5%) missed only one; a quarter (25.2%) identified 3 or fewer; and 43.8% identified 4 or fewer hazards. No one scored zero, and 5.5% and 6.9% identified 1 and 2 hazards, respectively. A range of factors was associated with the identification of specific hazards. Participants with professional or long-term experience with dogs and those with higher educational attainment were more likely to detect some hazards. Older respondents were less likely to identify several of the hazards, and those living with children were less likely to identify cuddling a dog as a hazard. We find that hazard perception testing could be a useful tool for the assessment of knowledge regarding dog-bite risk situations and potentially an educational tool for increasing knowledge and changing practices around dogs

Anorectal malformations and the impact of HIV on surgical outcome

Background. Anorectal malformations (ARMs) represent a significant surgical load in South African (SA) paediatric surgical centres. Surgical treatment of ARMs may be associated with postoperative complications owing to the nature of surgical procedures necessary in the neonatal and infant period. HIV and its effect on the immune response compound postoperative surgical complications. The impact of HIV exposure and its effect on the child’s immune status, independent of the child’s HIV status, has yet to be studied in the surgical population.Objectives. To assess the incidence of complications in our population of ARM patients and to explore whether these were increased in HIV-exposed but serologically negative children compared with HIV-unexposed children.Methods. This was a prospective study of all patients presenting with ARMs to the paediatric surgery units attached to the University of the Witwatersrand, Johannesburg, SA. Specifically, exposure to an HIV-positive mother, patient HIV status and presence of surgical complications were documented. Data were analysed for the period August 2016 - September 2017.Results. A total of 50 children were included (none were excluded); 19 (38%) were HIV-exposed but none were HIV-positive, and 28 (56%) were male and 22 (44%) female. Seventy-six operative procedures were performed, with 27 operative complications. In the HIV-exposed group, 68% of patients experienced operative complications, compared with 45% in the unexposed group (p=0.1); 50% of the HIV-exposed patients who had stoma formation experienced complications, compared with 20% in the unexposed group (p=0.08).Conclusions. The incidence of postoperative infectious complications in HIV-exposed patients was higher than in HIV-unexposed patients. The incidence of postoperative complications in HIV-unexposed patients parallels that in the international literature, except in the posterior sagittal anorectoplasty groups. It remains critically important to follow stringent perioperative protocols for infection prevention and aggressively treat any infection that arises, particularly in patients born to HIV-positive mothers, regardless of the patient’s HIV status.

The association between dog ownership or dog walking and fitness or weight status in childhood

Health benefits of dog walking are established in adults: dog owners are on average more physically active and those walking their dogs regularly have lower weight status than those who do not. However, there has been little research on children. A survey of pet ownership and involvement in dog walking was combined with fitness and weight status measurements of 1021 9-10 yrs old children, in the Liverpool SportsLinx study. We found little evidence to support that children who live with, or walk with, dogs, are any fitter or less likely to be obese than those who do not. This is an important finding as it suggests that the activity that children currently do with dogs is not sufficient enough to impact weight status or fitness

"Just old age" - a qualitative investigation of owner and veterinary professional experiences of and attitudes to ageing in dogs in the UK.

ObjectivesMany UK dogs live into old age, but owners may not recognise or report age-associated signs of disease which lead to negative welfare. This study investigated dog owner and veterinary professional experiences and attitudes towards ageing in dogs, how health care is offered, barriers to its delivery, and some best-practice solutions.Materials and methodsIn-depth semi-structured interviews were conducted with 15 owners of 21 dogs (aged 8 to 17 years mean: 13) and 11 veterinary professional (eight veterinary surgeons, two nurses and one physiotherapist). Open-text responses from 61 dog owner were collected using an online survey. Transcripts and survey responses were inductively coded into themes.ResultsFour themes were constructed: "just old age", barriers to care, trust in veterinary surgeons, and tools to improve health care. Age-related changes were mostly perceived as "just old age" by dog owner. Many dogs were no longer vaccinated and did not attend check-ups unless owners identified a problem. The greatest barriers to health care were finances (dog owner), owner awareness, willingness to act and consultation time (veterinary professional). Trust in veterinary professional was more likely when dog owner experienced continuity, prioritisation of care, clear communication and an accessible, knowledgeable and empathic veterinary professional. Participants suggested that senior health care and communication between dog owner and veterinary professional could be improved through questionnaires, and evidence-based online information.Clinical significanceOpportunities to educate owners on which clinical signs represent healthy or pathological ageing are being missed. Resources should be developed to guide on best-practice discussions in consultations, encourage more owners to recognise clinical signs and to seek and trust veterinary advice

Children, parents, and pets exercising together (CPET) randomised controlled trial: study rationale, design, and methods

Objectively measured physical activity is low in British children, and declines as childhood progresses. Observational studies suggest that dog-walking might be a useful approach to physical activity promotion in children and adults, but there are no published public health interventions based on dog-walking with children. The Children, Parents, and Pets Exercising Together Study aims to develop and evaluate a theory driven, generalisable, family-based, dog walking intervention for 9-11 year olds