Perceived crime and traffic safety is related to physical activity among adults in Nigeria
© Oyeyemi et al; licensee BioMed Central Ltd. 2012
Received: 16 December 2011
Accepted: 20 April 2012
Published: 17 May 2012
Neighborhood safety is inconsistently related to physical activity, but is seldom studied in developing countries. This study examined associations between perceived neighborhood safety and physical activity among Nigerian adults.
In a cross-sectional study, accelerometer-based physical activity (MVPA), reported walking, perceived crime and traffic safety were measured in 219 Nigerian adults. Logistic regression analysis was conducted, and the odds ratio for meeting health guidelines for MVPA and walking was calculated in relation to four safety variables, after adjustment for potential confounders.
Sufficient MVPA was related to more perception of safety from traffic to walk (OR=2.28, CI=1.13- 6.25) and more safety from crime at night (OR=1.68, CI=1.07-3.64), but with less perception of safety from crime during the day to walk (OR=0.34, CI=0.06- 0.91). More crime safety during the day and night were associated with more walking.
Perceived safety from crime and traffic were associated with physical activity among Nigerian adults. These findings provide preliminary evidence on the need to provide safe traffic and crime environments that will make it easier and more likely for African adults to be physically active.
KeywordsWalking Transportation Neighborhood Africa
Because of the rising prevalence of chronic non-communicable diseases occurring in developing countries , physical activity promotion has become an important public health agenda in sub-Saharan Africa . Environmental and policy interventions have been recommended worldwide for physical activity promotion because they can influence large groups and bring about population wide change . Hence, studies on neighborhood environment correlates of physical activity have increased greatly in recent years and provide evidence to guide policy interventions.
Multiple reviews have linked environmental variables like proximity to public and private recreational facilities, presence of sidewalks, and neighborhood aesthetics to recreational physical activity and walking [4–7]. Walkable neighborhoods characterized by high residential density, proximity between homes and destinations, connected street networks, and pedestrian facilities such as sidewalks have been related to walking and cycling for transportation [4–6, 8]. Neighborhood safety is an important aspect of the neighborhood social environment with potential influence on physical activity behaviours.
Safety is often measured as a simple undifferentiated construct, but for physical activity two aspects of safety are particularly relevant: traffic and crime. Studies on perceived crime and traffic safety as barriers to physical activity have produced inconsistent results [9–11]. For example, in a review , measures of personal safety were related to walking in the expected direction in six studies, but were related in the null or unexpected direction in ten other studies. Associations between aspects of safety and physical activity have also been reported to differ between subgroups, such as men and women [12–16], African American and White adults , older and younger adults  and overweight and obese men . However, many of these studies have been conducted in Western high income countries, and further investigations to understand perceived and real safety barriers for different populations, especially from developing countries, are needed. Recent findings from the developing countries of Latin America suggest that relationships between environmental attributes and physical activity in the developing countries may be complex and may be different from those in high- income developed countries [20–22]. For examples, Parra et al  in Curitiba, Brazil found perception of personal safety from crime when walking and bicycling, but not safety from traffic to be positively associated with physical activity in adults, however, Gomez et al  in Bogota, Colombia found safety from traffic to be a positive correlate of more physical activity in older adults. In another study conducted in three regions of Brazil, no significant associations were found between physical activity and traffic conditions, and safety related to walking and bicycling during the day and at night .
To date, only one study has been conducted on environment--physical activity relationships in Africa, and walking was found to be associated with perceived safety from crime in the expected (positive) direction . However, crime safety was related only to walking and not overall physical activity, and traffic safety was related with physical activity in the unexpected (inverse) direction in the Africa study. The study was limited to university students with potential higher socioeconomic status and younger age than the general population, and the safety items utilized were not specifically tailored to the African context. Thus, the one study in Africa reflects similar discrepant findings seen in previous studies. Since perception of safety between residents of different continents is likely to vary, the use of safety items from environmental surveys constructed in Western developed countries without local adaptation is a major concern, especially in Africa where the sociocultural and physical environments are distinct.
Africa-specific studies can provide an empirical basis for relevant public health action and stimulate strategies for health promotion in Africa. The purpose of the present study was therefore to examine the association between perceived neighborhood safety variables and objectively determined and self-reported physical activity and walking among a sample of African adults in Nigeria. As a secondary aim, we also explored sex-specific associations of perceived neighborhood safety with physical activity. The hypothesis was whether findings of developed countries mostly that perception of more neighborhood safety variables is related to more physical activity would be replicated in a sample of African adults.
Setting and sample
Maiduguri is the largest and the capital city in Borno State, North Eastern Nigeria. The state has a population of about 4.2million people, covers an area of 72, 609sq km with a population density of 57 people/ sq km and a Gross Domestic Product (GDP) of $5.18billion . Administratively, the city of Maiduguri is divided into localities, and each locality is subdivided into enumeration areas (neighborhoods) within the inner city or government reserved areas and new layout areas, with different housing patterns and street characteristics.
We recruited residents from localities classified into high and low socioeconomic status (SES) areas by the ministry of urban planning and development in Maiduguri. According to the 2003 Nigerian Demographic and Health Survey , high SES localities are mostly inhabited by people who are gainfully employed (elites), have more than secondary school education, and composed of many houses with functional potable water sources and modern sanitary facilities (flush toilet). Low SES localities mostly have residents who are self- employed (artisan, traders etc) or unemployed, with varying educational qualifications, and composed of few houses with functional water sources and modern sanitary facilities. Five localities each from the high and low SES areas were visited by the research team to objectively evaluate walkability characteristics using items from the Neighborhood Walkability Scale (NEWS) as a guide, and to purposively classify six neighborhoods in each locality into walkability/SES strata. For the implementation of the 1991 population census in Nigeria, a neighborhood was defined as one or more enumeration areas with a minimum of 50 households .
Consistent with the walkability index in previous studies [26–29], high- walkable neighborhoods in Maiduguri (localities in inner city) have a high concentration of multiple family residences, non- residential land uses (small retail stores, shops, local markets and places of worship) and streets with short block length with many alternative routes to destinations. Low- walkable neighborhoods in Maiduguri (localities in government reserved areas and new layout areas) are characterized by predominantly single family homes, few non- residential land uses for commercial purposes and streets with longer block length with fewer alternative routes to destinations. However, in practice, high-walkable neighorhoods tended to be low SES, and low-walkable neighborhoods tended to be high SES. In total, 15 high- walkable neighborhoods from low SES localities (low SES/high walkability) and 15- low walkable neighborhoods from high SES localities (high SES/low walkability) were selected for participants recruitment. This neighborhood selection method was used to identify neighborhoods of diverse walkability and SES, but unfortunately the two variables were very highly related.
Three female and two male research assistants who were indigenes of Maiduguri, and able to communicate in Hausa and English languages were trained by the investigators on accelerometer protocol, survey administration and interview and recruitment strategies. The training was done for five days within two weeks and it included observation of mock interviews to certify the interviewers prior to going in the field. The trained interviewers and the principal investigator recruited participants using a door-to-door strategy. For each selected neighborhood, households were enumerated on site and every odd-numbered household was approached for study interest and eligibility. When no one was at home or an eligible adult resided in the household but was not available, the interviewers made a maximum of five return visits for recruitment purposes. Participants who met the eligibility criteria of (1) living within the identified neighborhoods, (2) being 20 to 65years, (3) not having any disability that prevented walking, and (4) being able to complete or understand surveys in either English or Hausa languages were invited to participate in the study. Sample size was determined using a more conservative effect size (effect size statistic [d=] 0.25) than that used in a previous study . We determined that 250 participants from each neighborhood stratum (high- walkable/low SES and low- walkable/high SES) were needed to detect a moderate to large effect size with more than 80% power .
After recruitment, two data collection points were arranged eight days apart to allow for a seven day- measurement period. At data collection one, participants were introduced to the study, their informed consent obtained, and a uniaxial accelerometer/activity monitor (CSA Model 7164; Computer Sciences Application Inc) was distributed. Participants were instructed to attach the activity monitor to an adjustable belt and to wear it firmly around the waist, positioned just above the right hip. The activity monitor was to be worn for 7 consecutive days during waking hours when the participant was not engaged in water-related activities such as bathing and swimming. For the participants who had telephone, a prompt call to remind them about wearing the accelerometers was made after the second and fourth day of data collection. At data collection two, the interviewer collected the accelerometer, measured participants height and weight using standardized procedures and conducted the survey with the participants. The interviewer followed the same call back procedures if the participant was not at home for data collection two. The average time between the end of the accelerometer measurement period and conduct of the interview if participants were not home for the scheduled data collection two appointments was two days. All participants provided informed consent, and the study was approved by Human Research Ethic Committee of the University of Maiduguri Teaching Hospital, Nigeria.
Objective physical activity
The accelerometer was used to provide an objective measure of physical activity. It collected minute-by-minute activity counts that were scored as minutes spent across the 7days in intensity levels of sedentary, light, moderate and vigorous activity based on cut-points derived from previous research . An average of at least 10 hours of data for a five- day counts was required [32, 33]. At least 30 minutes of continuous zero counts were defined as non wearing periods. Time spent in moderate- and vigorous-intensity activity (MVPA) was defined as accelerometer counts per minute of 1952 and higher [31, 34]. The data were scored and interpreted using the MeterPlus Version 4.2 software from Santech, Inc. (http://www.meterplussoftware.com). Meeting guidelines for sufficient activity was defined according to the public health physical activity recommendation as accumulating 150min/wk or more of MVPA [35, 36]. CSA accelerometers provide valid estimates of physical activity [37, 38].
Self- reported physical activity
The short self- administered version of the International Physical Activity Questionnaire (IPAQ-SF) which included 7 items was used to assess self-reported walking. The questionnaire estimated vigorous- and moderate- intensity activities, and walking in terms of frequency (days/wk) and duration (min/day) in the last 7days. These activity categories may be treated separately by computing the total minutes of each category in a week or multiplied by their estimated values in METs and summed to gain an overall estimate of physical activity in a week (http://www.ipaq.ki.se). Total minutes of walking was the primary self-reported outcome in this study, and was dichotomized into meeting recommendations (at least 150min/wk) or not [35, 36]. The test retest reliability (ICC=0.33- 0.73) and concurrent validity (=0.78- 0.92) of a Hausa version of the IPAQ-SF in Nigeria are acceptable . Acceptable test retest reliability (r=0.70- 0.97) and criterion validity (r=0.23) compared with accelerometer monitoring has also been reported for IPAQ in both the developed and developing countries .
Perceived neighborhood safety factors
An adapted self- administered version of the Physical Activity Neighborhood Environment Scale (PANES) was used to assess perception of neighborhood safety factors. The first and third authors with an expert group that composed of public health scientists, geographers, town and urban planners, and housing and transportation executives adapted the PANES for use in Nigeria. The 17- item PANES was originally developed by the International Physical Activity Prevalence Study  and contained four indicators of crime and traffic safety that have been used internationally [18, 19, 42–45]. For the purpose of this study, two adapted items each were used to assess the perception of crime safety (Walking is dangerous in my neighborhood because of inadequate security from crime, molestation and harassment from hooligans, rascals and drug addicts and Walking is dangerous in my neighborhood because of inadequate security from crime. molestation and harassment from hooligans, rascals and drug addicts) and traffic safety (It could be safe to bicycle in or near my neighborhood because there is little traffic and Walking is dangerous in my neighborhood because of the speed of traffic and aggressive driving) in the neighborhood. Neighborhood was defined as the area within approximately one kilometer or half a mile of the participants home or any area that could be walked to in 1015 minutes. The four items were presented with the response options: strongly disagree, somewhat disagree, somewhat agree, strongly agree, dont know/ not sure, or refused to answer; and items except traffic safety for bicycling were reverse scored. For the purpose of data analysis, responses to each of the environmental variables were collapsed into categories of agree (strongly agree and somewhat agree) and disagree (strongly disagree and somewhat disagree). PANES was found to have acceptable test-retest reliability in the African population with intraclass correlation coefficients (ICC) for the four safety variables ranging from 0.43 for the item regarding crime during the day to 0.83 for the item on crime safety at night . Similar test-retest findings have been reported for Swedish  and United States samples .
Information on age, gender, marital status, religion, income, educational level and employment status were elicited from the participants. Marital status was classified as married and not married. Educational level was classified as more than secondary school education, secondary school education, and less than secondary school education. Employment status was classified into Government/private employed, self- employed (traders, artisan etc) and unemployed (homemaker, student, retired, or unable to work). Income was categorized into 4 groupings based on NAIRA/month (15 000 NAIRA100 US Dollars).
Descriptive statistics were computed for all variables. Chi- square statistic was used to compare physical activity and perception of neighborhood safety by gender. Separate logistic regression analyses for sufficient objective and self-reported walking as dependent variables, respectively, were conducted with the full sample to calculate the adjusted odd ratios (ORs) and 95% confidence intervals (CI) for each neighborhood safety variable. In addition, logistic regressions models were used to explore interactions between neighborhood safety variables and gender for physical activity, and variables for which there is significant interaction were separately explored for women and men. Age, gender, location (high/low SES), employment status, and educational level were the sociodemographics variables adjusted in the regression analysis. Income was not included in the regression models due to large number of missing responses (n=27) and its significant correlation with employment status (r=0.49, p<0.01) and educational level (r=0.43, p<0.01). All statistical analyses were conducted using SPSS.
Description of sample
Socio-demographic characteristics of the Participants (N=219)
Age Group (years)
Mean age ( SD)
Body Mass Index (Kgm -2 )
Normal Weight (18.5- 24.9)
Mean BMI ( SD)
Monthly Income (Naira)*
Physical activity and perception of neighborhood safety
Participants Physical Activity and Perception of Neighborhood Safety, Overall and by Gender
X 2 - Statistic*
Self- Reported Walking
Traffic Safety for Bicycling
Traffic Safety for Walking
Crime Safety during the Day
Crime Safety at Night
Perceived neighborhood safety factors associated with objective physical activity
Association between Perceived Neighborhood Safety and Sufficient Health Related Objective Physical Activity, Overall and by Gender
Adjusted OR (95%C.I)
Adjusted OR (95%C.I)
Adjusted OR (95%C.I)
Traffic Safety for bicycling
0.87 (0.29- 2.54)
0.77 (0.20- 2.87)
0.54 (0.06- 5.42)
Traffic Safety for walking
2.28 (1.13- 6.25)*
Crime Safety during the day
0.34 (0.06- 0.91)*
Crime Safety at night
1.68 (1.07- 3.64)*
0.63 (0.16- 2.46)
3.82 (1.08- 14.00)*
Perceived neighborhood safety factors associated with self- reported walking
Association between Perceived Neighborhood Safety and Self- Reported Sufficient Health Related Walking, Overall and by Gender
Adjusted OR (95%C.I)
Adjusted OR (95%C.I)
Adjusted OR (95%C.I)
Traffic Safety for bicycling
2.26 (0.49- 10.53)
Traffic Safety for walking
1.19 (0.19- 7.12)
Crime Safety during the day
5.92 (1.38- 60.59)*
10.27 (1.57- 18.31)*
Crime Safety at night
6.99 (2.71- 18.04)*
3.09 (0.56- 17.02)
6.97 (2.16- 22.50)*
The results of this study support some relationships between neighborhood safety and physical activity among Nigerian adults. Though most variables of perceived safety from crime and traffic were associated as expected with both objective and self-reported health related physical activity, perception of traffic safety to bicycle yielded weaker and/or non- significant associations in the unexpected direction. It appears that associations between safety and physical activity in this Nigerian study were somewhat more consistent than the literature from developed countries . In developing countries, the importance of the social environment, including safety from crime and from traffic as key determinants of physical activity behaviors has been emphasized in recent studies [20, 21, 49]. To our knowledge, no previous study, except our own  has documented how neighborhood safety factors relate to physical activity behaviours of adults in any African country.
Perception of the neighborhood as safe from crime during the night emerged as the strongest correlate of health related physical activity. This finding was observed for both objective MVPA and self-reported walking. Consistent with some previous studies [13–15, 50], this finding suggests that an unsafe neighborhood from crime at night may have negative influence on residents' physical activity. Feeling unsafe may diminish confidence in the ability to be physically active  or willingness to go outdoors. This is important in low income countries of Africa where neighborhood safety may be particularly salient.
The findings for safety from crime during the day were inconsistently related to physical activity outcomes, increasing the odds of self-reported walking but decreasing the odds of objective MVPA. This pattern is similar to discrepant findings in this literature in general [9, 11, 20, 21]. Perhaps perceived safety during the day is related to walking because much walking takes place in the neighborhood, including required walking for transportation. Perceived safety from crime during the day may be related differently to total physical activity, which also reflects occupational or leisure activities that may be done elsewhere and influenced by different factors. However, it is possible that other environmental and/or personal factors unique to the developing countries may help explain the discrepant findings on associations between safety from crime during the day and physical activity outcomes in this study. Different environmental attributes and personal factors have been associated with different physical activity outcomes among adults in the developing countries [21, 51], suggesting that these relationships are complex and may differ from those in high-income countries . Additional study will be needed to explain present results.
Associations in the expected direction were observed between perception of safety from traffic for walking and meeting recommendations for objective MVPA. This result suggests that heavy traffic may be a barrier to physical activity and provides preliminary evidence of the need to provide safe traffic environments to support physical activity in Africa. However, our finding may not help to resolve discrepant findings across studies because traffic safety for bicycling was not related to objective physical activity in the present study. The lack of findings for safety to bicycle is not surprising because bicycling rates have been unstudied and appear to be low among Nigerian adults compared to the developed countries. Previous studies were also unable to provide consensus on how perception of traffic was related to physical activity [5, 9, 23, 52, 53], but this variable has not been studied extensively. Perhaps improved questions about facilities that protect bicyclists and pedestrians from traffic, and specific questions about traffic speed, traffic volume, and safety of intersections would provide more informative results.
There were a few gender differences in associations of safety variables with physical activity. While safety from crime at night appeared to be a barrier for men to engage in MVPA and walking, it was not relevant for womens physical activity. Men in Africa may have to return home at night from their occupation and be active outdoors, while women may rarely go out at night because of the societal expectation on them to take care of domestic related activities. However, women in this study tended to walk more when they perceived their neighborhoods as safe from crime during the day. Perhaps women are particularly likely to walk in the neighborhood during the day, so perceived crime during the day could inhibit this relatively common behavior.
Striking differences between men and women were found in the mean ratings of safety. On all four safety items, men reported feeling significantly safer than women. The biggest difference in perceptions, 66 percentage points, was found for traffic safety for walking, and this variable was correlated with objective MVPA for women. Because traffic volume and traffic speed may be differently related to physical activity , it is possible that high speed of traffic is an important barrier to physical activity that is specific to women. This evidence is an empirical rationale to implement and evaluate efforts to reduce traffic speed and aggressive driving on women and men. However, no definite conclusions on this topic can be drawn yet, because the present study had a cross-sectional design and it is the first from Africa showing this effect. Still the result shows traffic control is a potential health promotion and physical activity intervention in Africa.
There were several limitations of this study. Probability sampling was used to recruit participants from diverse neighborhoods, but the relatively small sample from a single city in Nigeria may limit generalizability. Walkability was not adjusted for in this study because walkability was confounded with SES, which reflects the reality in Nigerian cities. It is important that future studies develop neighborhood walkability and/or activity- friendliness indexes unique to Nigeria based on empirical analysis. The cross-sectional design does not allow us to determine causal relationships. Prospective or quasi- experimental studies are needed to strengthen the evidence of causality in this field. Although the scoring of objective physical activity at moderate-to-vigorous levels was consistent with other studies, [32, 55], different methods have been used , and there is not a consensus about how to compute achievement of physical activity guidelines. The present study was conducted during two distinct seasons in Nigeria with varying weather conditions that could impact physical activity behavior. Though the perceived safety variables were specific to the neighborhood, neither of the physical activity outcomes was neighborhood-specific. This mis-match introduced error, but makes the several significant findings more notable.
The findings from the gender- specific analyses should be interpreted with caution as most of the resulting estimates were not precise. Small sample size can adversely affects precision of estimates and compromise the power of a study . However, the findings can be considered preliminary and indicate the need for larger and more definitive studies, especially on effect modification of gender between neighborhood safety and physical activity in the African population.
Strengths of the study included separate measures for crime safety and traffic safety, objectively measured total physical activity, and self-report walking, which is the most common physical activity. The sample was selected to represent a range of neighborhood physical and socioeconomic environments. Though there are some inconsistencies in present findings about the relation of perceived traffic and crime safety to physical activity among Nigerian adults, the preponderance of evidence indicates that both crime and traffic safety appear to be significant barriers to physical activity. Because women felt less safe on all items, it appears that women are more affected by safety concerns.
As Africa continues to develop, it is predictable that automobile travel and chronic disease will increase. The present study is the first evidence that these components of development may be inter-connected, specifically in an African country. Thus, transportation planners should consider the likely health consequences of their decisions, and health officials should become involved in transportation planning. Every country places a high priority on reducing criminal behavior, and present findings add evidence that fear of crime may be having an effect of reducing physical activity, thus increasing risk of non-communicable diseases. It is important to attempt the replication of these findings in other developing nations in Africa, and also in Latin America where findings have been inconclusive [20, 21, 51]. The use of objective measures of crime and traffic crash statistics (the number of traffic accidents and pedestrian deaths, petty and violent crime incidents) and further development of culturally-appropriate measures of crime and traffic safety could improve the research. Further research using suitable measures in developing countries could lead to evidence-based recommendations for creating safer communities that make people more comfortable being physically active. Improving traffic and crime safety are likely two of numerous interventions needed to reverse the epidemics of inactivity-related non-communicable diseases in Africa.
We found perception of safety from crime and traffic to be associated with health related physical activity, with some sex-specific findings for the association of crime safety during the day and night. Women were more concerned about neighborhood safety than men. The findings of the present study provide preliminary evidence on the need to provide safe traffic and crime environments that will make it easier for African adults to be physically active.
Authors wish to acknowledge the support of the Ministry of Urban Planning and Development in Maiduguri for assistance with classification of localities into socioeconomic strata. We would also like to thank all the participants that took part in this study.
- WHO: The World Health Report 2002. Reducing risks, promoting healthy life. 2002, World Health Organization, GenevaGoogle Scholar
- WHO: The World Health Regional Committee for Africa. Diseases in the African region: current situation and perspective. 2005, World Health Organization, MaputoGoogle Scholar
- WHO: World Health Assembly 57.17. Global strategy on diet and physical activity. 2004, World Health Organization, GenevaGoogle Scholar
- Gebel K, Bauman AE, Petticrew M: The physical environment and physical activity: a critical appraisal of review articles. Am J Prev Med. 2007, 32: 361-369.View ArticlePubMedGoogle Scholar
- Owen N, Humpel N, Leslie E, Bauman A, Sallis JF: Understanding environmental influences on walking: review and research agenda. Am J Prev Med. 2004, 27: 67-76.View ArticlePubMedGoogle Scholar
- Saelens BE, Handy SL: Built environment correlates of walking: a review. Med Sci Sports Exerc. 2008, 40 (7): s550-s566.View ArticlePubMedPubMed CentralGoogle Scholar
- National Institute of Health and Clinical Excellence: Environmental correlates of physical activity and walking in adults and children: a review of reviews. , Available at: http://www.nice.org.uk/nicemedia/live/11679/34740/34740.pdf. Accessed July 15, 2010
- Heath GW, Brownson RC, Kruger J, Miles R, Powell KE, Ramsey LT, the Task Force on Community Preventive Services: The effectiveness of urban design and land use and transport policies and practices to increase physical activity: a systematic review. J Phys Act Health. 2006, 3 (1): s55-s76.Google Scholar
- Humpel N, Owen N, Leslie E: Environmental factors associated with adults participation in physical activity- a review. Am J Prev Med. 2002, 22 (3): 188-199.View ArticlePubMedGoogle Scholar
- Duncan MJ, Spence JC, Mummery WK: Perceived environment and physical activity: a meta-analysis of selected environmental characteristics. Int J Behav Nutr Phys Act. 2005, 2: 11-View ArticlePubMedPubMed CentralGoogle Scholar
- Loukaitou-Sideris A, Eckc JE: Crime prevention and active living. Am J Health Promot. 2007, 21 (4s): 380-389.View ArticlePubMedGoogle Scholar
- De Boudeaudhuij I, Sallis JF, Saelens BE: Environmental correlates of physical activity in a sample of Belgium adults. Am J Health Promot. 2003, 18 (1): 83-92.View ArticleGoogle Scholar
- Foster C, Hillsdon M, Thorogood M: Environmental perceptions and walking in English adults. J Epidemiol Community Health. 2004, 58: 924-928.View ArticlePubMedPubMed CentralGoogle Scholar
- Bengoechea GE, Spence JC, McGannon KR: Gender differences in perceived environmental correlates of physical activity. Int J Behav Nutr Phys Act. 2005, 2: 12-View ArticlePubMed CentralGoogle Scholar
- Bennett GG, McNeill LH, Wolin KY, Duncan DT, Puleo E, Emmons KM: Safe to walk? Neighborhood safety and physical activity among public housing residents. PLoS Med. 2007, 4 (10): e306-View ArticlePubMed CentralGoogle Scholar
- Inoue S, Ohya Y, Odagiri Y, Takamiya T, Ishii K, Kitabayashi M, Suijo K, Sallis JF, Shimomitsu T: Association between perceived neighborhood environment and walking among adults in 4 cities in Japan. J Epidemiol. 2010, 20 (4): 277-286.View ArticlePubMedPubMed CentralGoogle Scholar
- Hooker HS, Wilson DK, Griffin SF, Ainsworth BE: Perception of environmental supports for physical activity in African American and white adults in a rural county in South Carolina. Prev Chronic Dis (Serial Online). 2005, 2: A11-September 2009, http://www.cdc.gov/pcd/issues/2005/oct2005_0048.htmGoogle Scholar
- Shigematsu R, Sallis JF, Conway TL, Sealens BE, Frank LD, Cain KL, Chapman JE, King AC: Age differences in the relation of perceived neighborhood environment to walking. Med Sci Sports Exerc. 2009, 41: 314-321.View ArticlePubMedGoogle Scholar
- Liao Y, Harada K, Shibata A, Ishii K, Oka K, Nakamura Y, Inoue S, Shimomitsu T: Perceived environmental factors associated with physical activity among normal-weight and overweight Japanese Men. Int J Environ Res Public Health. 2011, 8: 931-943.View ArticlePubMedPubMed CentralGoogle Scholar
- Parra DC, Hoehner CM, Hallal PC, Reis R, Brownson RC, Pratt M, Simoes E: Perceived environmental correlates of physical activity for leisure and transportation in Curitiba, Brazil. Prev Med. 2011, 52: 234-238.PubMedGoogle Scholar
- Gomes GAO, Reis RS, Parra DC, Ribeiro I, Hino AAF, Hallal PC, Malta DC, Brownson RC: Walking for leisure among adults from three Brazilian cities and its association with perceived environment attributes and personal factors. Int J Behav Nutr Phys Act. 2011, 8: 111-View ArticlePubMedPubMed CentralGoogle Scholar
- Gomez LF, Parra DC, Buchner D, Brownson RC, Sarmiento OL, Pinzon JD, Ardila MA, Moreno J, Serrato M, Lobeto F: Built environment attributes and walking patterns among the elderly population in Bogota. Am J Prev Med. 2010, 38: 592-599.View ArticlePubMedGoogle Scholar
- Oyeyemi AL, Adegoke BOA, Oyeyemi AY, Sallis JF: Perceived environmental correlates of physical activity and walking in African young adults. Am J Health Promot. 2011, 25 (5): e10-e19.View ArticlePubMedGoogle Scholar
- National Bureau of Statistics: Statistical fact sheet and population census. Federal republic of Nigeria. 2008, [http://www.nigerianstat.gov.ng]Google Scholar
- Commission NP, Demographics N, Survey H: National Population Commission (NPC) [Nigeria] and ORC Macro. 2003, Calverton, Maryland, 2004Google Scholar
- Frank LD, Sallis JF, Saelens BE, Leary L, Cain K, Conway TL, Hess PM: The development of a walkability index: Application to the Neighborhood Quality of Life Study. Br J Sports Med. 2010, 44: 924-933.View ArticlePubMedGoogle Scholar
- Saelens BE, Sallis JF, Black JB, Chen D: Neighborhood based differences in physical activity: An environmental scale evaluation. Am J Public Health. 2003, 93: 1552-1558.View ArticlePubMedPubMed CentralGoogle Scholar
- Saelens BE, Sallis JF, Frank LD: Environmental correlates of walking and cycling: Findings from the transportation, urban design, and planning literatures. Ann Behav Med. 2003, 25: 80-91.View ArticlePubMedGoogle Scholar
- Leslie E, Saelens B, Frank L, Owen N, Bauman A, Coffee N, Hugo G: Residents perceptions of walkability attributes in objectively different neighbourhoods: a pilot study. Health Place. 2005, 11: 227-236.View ArticlePubMedGoogle Scholar
- Cohen JA: Statistical Power Analysis for the Behavioural Sciences. 1988, Lawrence Erlbaum Associates, Hillsdale, NJ, 2Google Scholar
- Freedson P, Melanson E, Sirard J: Calibration of the computer science and applications, Inc. accelerometer. Med Sci Sports Exerc. 1998, 30: 777-781.View ArticlePubMedGoogle Scholar
- Sallis JF, Saelens BE, Frank LD, Conway T, Slymen D, Cain K, Chapman J, Kerr J: Neighborhood built environment and income: examining multiple health outcomes. Soc Sci Med. 2009, 68 (7): 1285-1293.View ArticlePubMedPubMed CentralGoogle Scholar
- Badland MS, Schofield K, Schofield GM, Witten K, Schluter PJ, Mavoa S, Kearns RA, Hinckson EA, Oliver M, Kaiwai H, Jensen VG, Ergler C, McGrath L, McPhee J: Understanding the relationship between activity and neighbourhoods (URBAN) study: research design and methodology. BMC Public Health. 2009, 9: 224-View ArticlePubMedPubMed CentralGoogle Scholar
- Ekelund U, Sepp H, Brage S, Becker W, Jakes R, Hennings M, Wareham N: Criterion-related validity of the last 7-day, short form of the international physical activity questionnaire in Swedish adults. Public Health Nutr. 2006, 2: 258-265.Google Scholar
- DHHS- Guidelines Expert Report: Department of Health and Human Services. , Available at: [http://www.health.gov/paguidelines/guidelines/default.aspx]. June 2009
- Haskell WL, Lee I-M, Pate RP, Powell KE, Blair SN, Franklin BA, Macera CA, Heath GW, Thompson PD, Bauman A: Physical activity and public health: updated recommendation for adults from the American College of Sports Medicine and the American Heart Association. Circulation. 2007, 116: 1081-1093.View ArticlePubMedGoogle Scholar
- Sirard JR, Melanson EL, Li L, Freedson PS: Field evaluation of the Computer Science and Applications, Inc. physical activity monitor. Med Sci Sports Exerc. 2000, 32: 695-700.View ArticlePubMedGoogle Scholar
- Nichols JF, Morgan CG, Chabot LE, Sallis JF, Calfas KJ: Assessment of physical activity with the computer science and applications, Inc., accelerometer: Laboratory versus field validation. Res Q Exerc Sport. 2000, 71: 36-43.View ArticlePubMedGoogle Scholar
- Oyeyemi AL, Oyeyemi AY, Adegoke BOA, Oyetoke FO, Aliyu HN, Aliyu SU, Rufai AA: Cross cultural adaptation of the International Physical Activity Questionnaire: Reliability and validity of the Hausa version in Nigeria. BMC Med Res Methodol. 2011, 11: 156-View ArticlePubMedPubMed CentralGoogle Scholar
- Craig CL, Marshall AL, Sjostrom M, Bauman AE, Booth ML, Ainsworth BE, Pratt M, Ekelund A, Yngve A, Sallis JF, Oja P: International Physical Activity Questionnaire: 12 country reliability and validity. Med Sci Sports Exerc. 2003, 35: 1381-1395.View ArticlePubMedGoogle Scholar
- International Physical Activity Prevalence Study: Self-administered environmental Module: Revised November 2002. , [http://www.rohan.sdsu.edu/faculty/sallis/IPAQIPS.pdf] January 2011
- Bergman P, Grjibovski AM, Hagstrmer M, Sallis JF, Sjstrm M: The association between health enhancing physical activity and neighbourhood environment among Swedish adults a population-based cross-sectional study. Int J Behav Nutr Phys Act. 2009, 6: 8-View ArticlePubMedPubMed CentralGoogle Scholar
- Doerksen SE, Motl RW, McAuley E: Environmental correlates of physical activity in multiple sclerosis: a cross-sectional study. Int J Behav Nutr Phys Act. 2007, 4: 49-View ArticlePubMedPubMed CentralGoogle Scholar
- Sallis JF, Kerr J, Carlson JA, Norman GJ, Saelens BE, Durant N, Ainsworth BE: Evaluating a brief self-report measure of neighborhood environments for physical activity research and surveillance: Physical activity neighborhood environment scale (PANES). J Phys Act Health. 2010, 7: 533-540.PubMedGoogle Scholar
- Sallis JF, Bowles HR, Bauman A, Ainsworth BE, Bull FC, Craig CL, Sjstrm M, De Bourdeaudhuij I, Lefevre J, Matsudo V, Matsudo S, Macfarlane DJ, Gomez LF, Inoue S, Murase N, Volbekiene V, McLean G, Carr H, Heggebo LK, Tomten H, Bergman P: Neighborhood environments and physical activity among adults in 11 countries. Am J Prev Med. 2009, 36: 484-490.View ArticlePubMedGoogle Scholar
- Oyeyemi AL, Adegoke BOA, Oyeyemi AY, Fatudimu MB: Test- retest reliability of IPAQ environmental module in African Population. Int J Behav Nutr Phys Act. 2008, 5: 38-View ArticlePubMedPubMed CentralGoogle Scholar
- Alexander A, Bergman P, Hagstromer M, Sjostrom M: IPAQ environmental module; reliability testing. J Public Health. 2006, 14: 76-80.View ArticleGoogle Scholar
- Foster S, Giles-Corti B: The built environment, neighborhood crime and constrained physical activity: an exploration of inconsistent findings. Prev Med. 2008, 47: 241-251.View ArticlePubMedGoogle Scholar
- Parra DC, Gomez LF, Sarmiento OL, Buchner D, Brownson RC, Schimd T, Gomez V, Lobelo F: Perceived and objective neighborhood environment attributes and health related quality of life among the elderly in Bogota, Colombia. Soc Sci Med. 2010, 70: 1070-1076.View ArticlePubMedGoogle Scholar
- Wen M, Kandula NR, Lauderdale DS: Walking for transportation or leisure: what difference does the neighborhood make?. J Gen Intern Med. 2007, 22 (12): 1674-1680.View ArticlePubMedPubMed CentralGoogle Scholar
- Hallal PC, Reis RS, Parra DC, Hoehner CM, Brownson RC, Simoes EJ: Association between perceived environmental attributes and physical activity among adults in Recife, Brazil. J Phys Act Health. 2010, 7 (Suppl 2): S213-S222.PubMedGoogle Scholar
- King AC, Castro C, Wilcox S, Eyler AA, Sallis JF, Brownson R: Personal and environmental factors associated with physical inactivity among different racial-ethnic groups of U.S middle- aged and older- aged women. Health Psychol. 2000, 19: 354-364.View ArticlePubMedGoogle Scholar
- Wilcox S, Castro C, King AC, Houseman RA, Brownson R: Determinants of leisure time physical activity in rural compared with urban older and ethnically diverse women in the United States. J Epidemiol Community Health. 2000, 54: 667-672.View ArticlePubMedPubMed CentralGoogle Scholar
- McGinn AP, Evenson KR, Herring AH, Huston SL, Rodrigues DA: Exploring associations between physical activity and perceived and objective measures of the built environment. J Urban Health. 2007, 84: 162-184.View ArticlePubMedPubMed CentralGoogle Scholar
- Van Dyck D, Cardon G, Deforche B, Sallis JF, Owen N, De Bourdeadhuij I: Neighborhood SES and walkability are related to physical activity behavior in Belgian adults. Prev Med. 2010, 50: S74-S79.View ArticlePubMedGoogle Scholar
- Troiano R, Berrigan D, Dodd KW, Masse L, Tilbert T, McDowell M: Physical activity in the United States measured by accelerometer. Med Sci Sports Exerc. 2008, 40: 181-188.View ArticlePubMedGoogle Scholar
- The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2458/12/294/prepub
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