title: Shoe leather epidemiology: active travel and transport infrastructure in the urban landscape.
abstract: BACKGROUND
  Building new transport infrastructure could help to promote changes in patterns of mobility, physical activity, and other determinants of population health such as economic development. However, local residents may not share planners' goals or assumptions about the benefits of such interventions. A particularly contentious example is the construction of major roads close to deprived residential areas. We report the qualitative findings of the baseline phase of a longitudinal mixed-method study of a new urban section of the M74 motorway in Glasgow, Scotland, that aims to combine quantitative epidemiological and spatial data with qualitative interview data from local residents.
  
  
  METHODS
  We interviewed 12 residents purposively sampled from a larger study cohort of 1322 to include men and women, different age groups, and people with and without cars, all living within 400 metres of the proposed route of the new motorway. We elicited their views and experiences of the local urban environment and the likely impact of the new motorway using a topic guide based on seven key environmental constructs (aesthetics, green space, convenience of routes, access to amenities, traffic, road danger and personal danger) reflecting an overall ecological model of walking and cycling.
  
  
  RESULTS
  Traffic was widely perceived to be heavy despite a low local level of car ownership. Few people cycled, and cycling on the roads was widely perceived to be dangerous for both adults and children. Views about the likely impacts of the new motorway on traffic congestion, pollution and the pleasantness of the local environment were polarised. A new motorway has potential to cause inequitable psychological or physical severance of routes to local amenities, and people may not necessarily use local walking routes or destinations such as parks and shops if these are considered undesirable, unsafe or 'not for us'. Public transport may have the potential to promote or discourage active travel in different socioeconomic contexts.
  
  
  CONCLUSIONS
  Altering the urban landscape may influence walking and cycling in ways that vary between individuals, may be inequitable, and may not be predictable from quantitative data alone. A more applied ecological behavioural model may be required to capture these effects.
authors.affiliation: Medical Research Council Epidemiology Unit and Centre for Diet and Activity Research (CEDAR), Cambridge, UK. david.ogilvie@mrc-epid.cam.ac.uk.
authors.forename: David
authors.initials: D
authors.lastname: Ogilvie
authors.forename: Richard
authors.initials: R
authors.lastname: Mitchell
authors.forename: Nanette
authors.initials: N
authors.lastname: Mutrie
authors.forename: Mark
authors.initials: M
authors.lastname: Petticrew
authors.forename: Stephen
authors.initials: S
authors.lastname: Platt
references.citation: Annu Rev Public Health. 2006;27:297-322
references.pmid: 16533119
references.citation: Am J Prev Med. 2005 Nov;29(4):273-80
references.pmid: 16242589
references.citation: Int J Behav Nutr Phys Act. 2008 May 30;5:32
references.pmid: 18513430
references.citation: Ann Behav Med. 2003 Spring;25(2):80-91
references.pmid: 12704009
references.citation: J Epidemiol Community Health. 2005 Jul;59(7):535-6
references.pmid: 15965130
references.citation: Am J Prev Med. 2004 Jul;27(1):67-76
references.pmid: 15212778
references.citation: Int J Behav Nutr Phys Act. 2008 Aug 27;5:43
references.pmid: 18752663
references.citation: Health Soc Care Community. 2001 Jan;9(1):11-8
references.pmid: 11560717
references.citation: J Public Health (Oxf). 2006 Mar;28(1):49-55
references.pmid: 16436446
references.citation: Int J Behav Nutr Phys Act. 2008 May 04;5:26
references.pmid: 18454876
references.citation: Am J Public Health. 2003 Sep;93(9):1463-71
references.pmid: 12948964
references.citation: BMJ. 2001 May 5;322(7294):1115-7
references.pmid: 11337448
references.citation: Public Health. 2006 Dec;120(12):1127-32
references.pmid: 17067646
references.citation: Am J Prev Med. 2006 Aug;31(2):118-26
references.pmid: 16829328
references.citation: Public Health. 2008 Mar;122(3):329; author reply 330
references.pmid: 17923140
references.citation: Soc Sci Med. 1995 Feb;40(4):459-68
references.pmid: 7725120