Koichiro Oka
Dados Biográficos
| ID | 4426414 |
|---|---|
| NOME | Koichiro Oka |
| PRENOMES | Koichiro |
| SOBRENOME | Oka |
| ASSINATURA | OKA K |
| AFILIAÇÕES | Waseda University |
| ORCID | 0000-0001-5571-042X |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 55 |
| TOTAL DE CITAÇÕES | 31 |
| TOTAL COMO AUTOR | 55 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2011 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 3 |
Development of a new segmentation algorithm for “precontemplation” stage in lifestyle change among high-risk populations for lifestyle-related diseases
Introduction Specific health guidance programs provide motivational support to individuals in the precontemplation stage of the Transtheoretical Model (TTM) to encourage behavioral changes. However, this stage may encompass heterogeneous attitudes beyond simple lack of health interest. This study aimed to develop a novel segmentation classification incorporating behavioral economics concepts to better characterize the precontemplation population …
Beyond companionship
The findings highlight the psycho-social benefits of both single-dog and multi-pet ownership, suggesting their potential for fostering health and social well-being. More research is needed to examine the contributions of specific multi-pet and single-dog ownership and the pathways by which pet ownership contribute to health and well-being
Revisiting public open space and physical activity
Can urban design be a science for health studies
Cardiorespiratory fitness and body mass index on metabolic syndrome in middle-aged Japanese adults under national health guidance
This study found significant independent and combined associations of CRF and BMI with MetS only in men, but not in women. However, prospective studies are warranted to confirm sex-specific associations of CRF and BMI with MetS
The contributions of neighbourhood design in promoting metabolic health
The design and quality of the neighbourhood built environment can encourage health-supportive behaviours and support cardiometabolic health. However, despite the relationships between demographic and behavioural risk factors of metabolic syndrome being investigated by many studies, only some studies have directly estimated the associations between the built environment and metabolic syndrome. Using data from Canada, we examined the associations b…
Activity diversity is associated with the prevention of frailty in community-dwelling older adults
Introduction A prior study showed an association between diversity in daily activities (type, frequency, evenness) and frailty in older adults. However, the causality of this relationship is unclear. Therefore, this study aimed to clarify the relationship between activity diversity and frailty through a 2-year longitudinal study conducted among community-dwelling older adults. Methods We evaluated data from the 2018 and 2020 waves of the Otassha …
Associations between neighborhood walkability and walking following residential relocation
Introduction Cross-sectional studies consistently find that the neighborhood built environment (e.g., walkability) is associated with walking. However, findings from the few existing longitudinal residential relocation studies that have estimated associations between changes in neighborhood built characteristics and walking are equivocal. The study objective was to estimate whether changes in neighborhood walkability resulting from residential re…
Place attachment and walking behaviour
Depression among middle-aged adults in Japan
There has been considerable interest in the effect of the built environment design on depressive symptoms. However, there are still few empirical studies on this topic, and there is a dearth of evidence among middle-aged adults. The present study examined the associations of urban design attributes with depressive symptoms among a sample of middle-aged adults in Japan. Cross-sectional data from a random sample of residents (40–64 years old) in tw…
Urban Form Metrics for Promoting Walking
The Design Challenges for Dog Ownership and Dog Walking in Dense Urban Areas
There has been growing interest in the role of pet ownership, particularly dog ownership, in managing noncommunicable diseases. The built environment can act as a facilitator or barrier to owning a dog or dog walking. Nevertheless, limited studies conducted in different geographical contexts have examined how the built environment can influence dog ownership and dog walking. In this interdisciplinary article, using Japan as a case study, we ident…
Factors promoting collaboration between community sports leaders and guardians in urban areas of Japan
Background: Community sports leaders (CSLs) are expected to play an important role in promoting regional sports in Japan. Increased opportunities for CSLs to work in schools and engage with guardians could encourage middle-aged adults to participate in regional sports activities. However, few CSLs work with guardians, and there is no evidence regarding what CSL characteristics encourage collaboration. The present study aimed to ascertain the aspe…
The combination of cardiorespiratory fitness and muscular fitness, and prevalence of diabetes mellitus in middle-aged and older men
Background Although the negative relationship between cardiorespiratory fitness (CRF) or muscular fitness and diabetes mellitus were respectively observed in many previous studies, there is still a lack of studies that include CRF and muscular fitness simultaneously. Therefore, this study aimed to investigate the relationship between the combination of CRF and muscular fitness and diabetes through a cross-sectional study. Methods This study was p…
The relationships between parents’ and children’s screen times on body mass index
Background Understanding factors contributing to an individual reducing screen time is essential for promoting a healthy weight. Parents’ behavior affects children by influencing their daily decision-making through modeling, rules or restrictions, social support, and co-participation. We examined how the direct and indirect effects of parents’ and children’s behaviors regarding screen time influenced body mass index (BMI) among Japanese elementar…
Associations of public open space attributes with active and sedentary behaviors in dense urban areas
Geographic distribution of physically active and sedentary travel in an Asian megalopolis
Dog ownership, dog walking, and social capital
Evidence for social pathways to health benefits for dog owners appears positive but less well-developed. Our study aimed to estimate the differences in social capital by dog ownership and dog walking status among young-to-middle-aged adults and older adults in Japan. Data from 3606 residents living in Japan were used. Data on social capital, dog ownership, and dog walking were collected by questionnaires. Age-stratified multivariable linear regre…
Traditional and novel walkable built environment metrics and social capital
A rapidly growing body of literature has explored associations between urban design attributes, which are conducive to walking, and social capital. The current study aimed to build on the limitations of previous research. Specifically, this study estimated the associations between traditional and novel walkable built environment metrics and social capital among a sample of adults in Japan. Data (n = 1010) from a randomly selected cross-section of…
Socioeconomic disparity in cardiovascular health
Built environment design and cancer prevention through the lens of inequality
In this interdisciplinary article, we provided an evidence-based discussion on the role of the supportive built environment on cancer prevention. We also extended the theoretical thinking on the built environment-cancer links by raising possible equality challenges. Following the recent call in population-level interventions in cancer prevention, our aim is to encourage readers to think about the important potentials and limitations that are rais…
Associations of built environment attributes with bicycle use for transport
An increasing number of studies have examined neighbourhood built environment attributes associated with cycling. Some of them suggest non-linear relationships between built environment attributes and cycling. This study examined the strength and shape of associations of cycling for transport with objectively measured built environment attributes. Data were from 9146 Australian adults who took part in the 2009 South-East Queensland Travel Survey.…
Reliability and Validity of the Activity Diversity Questionnaire for Older Adults in Japan
Recent research has suggested that the breadth and evenness of activity and activity diversity contribute to health outcomes among older adults. However, few established assessment tools for activity diversity have been developed. This study developed an Activity Diversity Questionnaire (ADQ) for older adults through expert consultation and a preliminary survey among 18 community-dwelling older adults. The diversity score was calculated according…
Associations of eHealth Literacy with Obtaining Knowledge about Colorectal Cancer among Internet Users Accessing a Reputable Cancer Website
Examining the associations of eHealth literacy (eHL) with obtaining health knowledge from websites would help to clarify the causal pathway between eHL and health knowledge. This study aimed to compare the results obtained from Internet users with high or low eHL in accessing a reputable cancer website to obtain colorectal cancer (CRC) knowledge. A total of 105 participants with high eHL and 103 participants with low eHL accessed a reputable CRC …
Joint Associations of Leisure Screen Time and Physical Activity with Academic Performance in a Sample of Japanese Children
Studies have shown the potential effects of sedentary behavior and physical activity on not only physical and mental health but also academic performance in children. Nevertheless, studies have only focused on either sedentary behavior or physical activity. Examining the joint effects of both behaviors on academic performance provides detailed insights into the patterns of these behaviors in relation to children's academic achievement. The presen…
Evidence for urban design and public health policy and practice
Natural movement
Walking to get to and from local destinations including shops, services, and transit stops is a major source of adults' health-related physical activity. Research has been using space syntax measures in examining how urban form is related to such routine walking for transport. This paper proposes to apply a theory of space syntax, natural movement, which posits street layout as a primary factor influencing pedestrian movement. Discussing how this…
Associations of street layout with walking and sedentary behaviors in an urban and a rural area of Japan
Dog-walking in dense compact areas
There is a dearth of evidence about how high-density living may influence dog-walking behaviour. We examined associations between neighbourhood built environment attributes and dog-ownership and dog-walking behaviour in Japan. Data from 1058 participants were used. The dog-ownership was 18.8%. All neighbourhood built attributes (excluding availability of parks) were negatively associated with dog-ownership. Among dog-owners, these same attributes…
Walk Score® and Japanese adults' physically-active and sedentary behaviors
Walk Score® is a free publicly-available tool that evaluates how a particular location is supportive of residents' walking, based on the distance to various local destinations. Several studies have shown associations of Walk Score with walking behaviors. However, these studies have been conducted only in Western countries, such as the U.S.A., Australia, Canada, and France. In addition, the role of Walk Score in sedentary behaviors has not yet bee…
Urban Form Metrics for Promoting Walking
Associations of Neighborhood Environmental Attributes with Walking in Japan
Revisiting public open space and physical activity
Associations between the traditional and novel neighbourhood built environment metrics and weight status among Canadian men and women
Urban design and Japanese older adults' depressive symptoms
Despite associations found between physical activity and depression, and the built environment and physical activity, there appears to be inconclusive evidence regarding the role of built environment attributes with preventing depression among the elderly. This is mainly because few studies exist on this topic. In addition, the majority of existing studies have been conducted in Western countries; and there is a dearth of studies in other regions…
Perceived Environmental Factors Associated with Physical Activity among Normal-Weight and Overweight Japanese Men
Although it is crucial to examine the environmental correlates of physical activity (PA) for developing more effective interventions for overweight populations, limited studies have investigated differences in the environmental correlates on body mass index (BMI). The purpose of the present study was to examine the perceived environmental correlates of PA among normal-weight and overweight Japanese men. Data were analyzed for 1,420 men (aged 44.4…
Association of self-reported physical activity patterns and socio-demographic factors among normal-weight and overweight Japanese men
The results revealed that patterns and socio-demographic correlates of self-reported PA in overweight men are different from those in normal-weight men. This finding suggests the necessity of developing specific strategies for PA intervention among overweight men. Socio-demographic correlates of PA may be more important for normal-weight than overweight men
Correlates of prolonged television viewing time in older Japanese men and women
These findings identify particular socio-demographic and behavioral characteristics related to TV time among Japanese older adults. It should be noted that correlates of prolonged TV time differed by gender. Women in living situations with limited transportation options tended to spend prolonged time watching TV. Health promotion initiatives for older adults, particularly for older women, may be more effective if they take these attributes into a…
Sources of strength-training information and strength-training behavior among Japanese older adults
The promotion of strength training is now recognized as an important component of public health initiatives for older adults. To develop successful communication strategies to increase strength-training behavior among older adults, the identification of effective communication channels to reach older adults is necessary. This study aimed to identify the information sources about strength training that were associated with strength-training behavi…
Recess Physical Activity and Perceived School Environment among Elementary School Children
Differences in recess physical activity (PA) according to perceived school environment among elementary school children were examined. Participants were 103 children from two schools in Japan. PA was measured using accelerometry for seven consecutive days. Time spent in sedentary or PA (light, moderate, or vigorous) during their morning recess (25 min) and lunch recess (15 min) was determined. The School Physical Activity Environment Scale (three…
Gender and grade differences in objectively measured physical activity and sedentary behavior patterns among Japanese children and adolescents
Boys and lower-grade students engaged in more physical activity and were more likely to attain guidelines than girls and higher-grade students. These findings highlight the need for effective and sustainable strategies to promote physical activity in Japanese school children
Obtaining information about cancer
Less than half of the respondents information about cancer. The finding suggests that better health communication strategies would be necessary to inform Japanese people about cancer. Understanding which subgroups were less likely to obtain information and preferences of information might be effective in promoting cancer prevention
School grade and sex differences in domain-specific sedentary behaviors among Japanese elementary school children
Time spent engaging in each domain-specific sedentary behavior differed according to sex and school grade. Higher-grade students were less likely to meet screen-time guidelines. These findings highlight the need for domain-focused strategies to decrease sedentary behavior in Japanese school-age children
Associations of street layout with walking and sedentary behaviors in an urban and a rural area of Japan
Associations of Neighborhood Environmental Attributes with Walking in Japan
Drivers Are More Physically Active Than Non-Drivers in Older Adults
Car use has been identified as sedentary behavior, although it may enhance mobility, particularly in the older population. This cross-sectional study aimed to compare the time spent in objectively determined sedentary behavior (SB) and physical activity (PA) between older drivers and non-drivers. Four hundred and fifty Japanese older adults (74.3 ± 2.9 years) who had valid accelerometer data were included. They were asked to respond to a question…
Activity-Friendly Built Environments in a Super-Aged Society, Japan
There is a growing recognition of the role of built environment attributes, such as streets, shops, greenways, parks, and public transportation stations, in supporting people's active behaviors. In particular, surrounding built environments may have an important role in supporting healthy active aging. Nevertheless, little is known about how built environments may influence active lifestyles in "super-aged societies". More robust evidence-based r…
Physical Activity Environment and Japanese Adults’ Body Mass Index
Evidence about the impacts of the physical activity environment on adults' weight in the context of Asian countries is scarce. Likewise, no study exists in Asia examining whether Walk Score ® -a free online walkability tool-is related to obesity. This study aimed to examine associations between multiple physical activity environment measures and Walk Score ® ratings with Japanese adults' body mass index (BMI). Data from 1073 adults in the Healthy…
Relationship between Daytime Sleepiness and Health Utility in Patients after Cardiac Surgery
Background Daytime sleepiness can be assessed by the Epworth Sleepiness Scale (ESS), which is widely used in the field of sleep medicine as a subjective measure of a patient's sleepiness. Also, health utility assessed by the mean Short-Form Six-Dimension (SF-6D) score, one of several preference-based utility measures, is an important measure in health care. We aimed to examine age-related differences in daytime sleepiness and health utility and t…
Objectively Measured Neighborhood Walkability and Change in Physical Activity in Older Japanese Adults
Objectives: This study investigated the longitudinal association between changes in older adults’ physical activity and neighborhood walkability measured by geographic information systems (GISs, (ArcGIS, ESRI Inc., Redlands, CA, USA)). Methods: A mail survey was conducted for Japanese older adults who were randomly selected from three different settlement types. Data on walking, total moderate to vigorous physical activity (MVPA), and sociodemogr…
Walk Score® and Japanese adults' physically-active and sedentary behaviors
Walk Score® is a free publicly-available tool that evaluates how a particular location is supportive of residents' walking, based on the distance to various local destinations. Several studies have shown associations of Walk Score with walking behaviors. However, these studies have been conducted only in Western countries, such as the U.S.A., Australia, Canada, and France. In addition, the role of Walk Score in sedentary behaviors has not yet bee…
Association of Perceived Built Environment Attributes with Objectively Measured Physical Activity in Community-Dwelling Ambulatory Patients with Stroke
There is little evidence on how perceptions of the built environment may influence physical activity among post-stroke patients. This study aimed to explore the associations between perceived built environment attributes and objectively measured physical activity outcomes in community-dwelling ambulatory patients with stroke. This cross-sectional study recruited patients who could walk outside without assistance. We assessed both objectively meas…
Physical Activity and Sedentary Behavior Assessment
Different models of accelerometer have the potential to provide a different estimate of the same physical activity or sedentary behavior. Our study compared the outputs of the Active Style Pro (ASP) and ActiGraph (AG) devices in assessing predicted metabolic equivalents (METs) for specific activities under laboratory conditions. Thirty healthy young adults wore two hip accelerometers (ASP and AG), simultaneously while performing twenty-two activi…
Comparison of Older and Newer Generation Active Style Pro Accelerometers in Physical Activity and Sedentary Behavior Surveillance under a Free-Living Environment
Background . Comparability of accelerometers in epidemiological studies is important for public health researchers. This study aimed to compare physical activity (light, LPA; moderate, MPA; and moderate-to-vigorous, MVPA) and sedentary behavior (SB) data collected using two Omron triaxial accelerometer generations (Active style Pro, ASP) among a sample of Japanese workers in a free-living environment. Methods . Thirty active and sedentary workers…
Assessing Physical Activity and Sedentary Behavior under Free-Living Conditions
Various accelerometers have been used in research measuring physical activity (PA) and sedentary behavior (SB). This study compared two triaxial accelerometers-Active style Pro (ASP) and ActiGraph (AG)-in measuring PA and SB during work and nonwork days in free-living conditions. A total of 50 working participants simultaneously wore these two accelerometers on one work day and one nonwork day. The difference and agreement between the ASP and AG …
How Do Neighbourhood Definitions Influence the Associations between Built Environment and Physical Activity
Researchers investigating relationships between the neighbourhood environment and health first need to decide on the spatial extent of the neighbourhood they are interested in. This decision is an important and ongoing methodological challenge since different methods of defining and delineating neighbourhood boundaries can produce different results. This paper explores this issue in the context of a New Zealand-based study of the relationship bet…
Social-ecological correlates of accelerometer-measured occupational sitting among Japanese desk-based workers
Seeing work colleagues take sedentary breaks may be important for reducing workplace sedentary behavior. Those who are more sedentary are motivated to take sedentary breaks. Male workers who feel the need to take sedentary breaks at work are more sedentary
A qualitative investigation of the factors perceived to influence student motivation for school-based extracurricular sports participation in Japan
Lack of sufficient physical activity in youth is a worldwide concern. School-based extracurricular sports activities (SBECSA) are considered a central opportunity to increase youth physical activity. However, the factors that influence students’ participation in SBECSA are not well established. Therefore, the purpose of the present study was to clarify the factors perceived to influence the motivation of Japanese students to participate in SBECSA…
Natural movement
Walking to get to and from local destinations including shops, services, and transit stops is a major source of adults' health-related physical activity. Research has been using space syntax measures in examining how urban form is related to such routine walking for transport. This paper proposes to apply a theory of space syntax, natural movement, which posits street layout as a primary factor influencing pedestrian movement. Discussing how this…
Evidence for urban design and public health policy and practice
Medicine (46 obras) · Psychology (27 obras) · Urban Transport and Accessibility (27 obras) · Demography (26 obras) · Physical activity (25 obras) · Gerontology (22 obras) · Demography (21 obras) · Geography (21 obras) · Physical therapy (21 obras) · Environmental health (19 obras)