Demand response to improved walking infrastructure: A study into the economics of walking and health behaviour change.
Walking is the most common form of moderate-intensity physical activity among adults, is widely accessible and especially appealing to obese people. Most often policy makers are interested in valuing the effect on walking of changes in some characteristics of a neighbourhood, the demand response for walking, of infrastructure changes. A positive demand response to improvements in the walking environment could help meet the public health target of 150 min of at least moderate-intensity physical activity per week. We model walking in an individual's local neighbourhood as a 'weak complement' to the characteristics of the neighbourhood itself. Walking is affected by neighbourhood characteristics, substitutes, and individual's characteristics, including their opportunity cost of time. Using compensating variation, we assess the economic benefits of walking and how walking behaviour is affected by improvements to the neighbourhood. Using a sample of 1209 respondents surveyed over a 12 month period (Feb 2010-Jan 2011) in East Belfast, United Kingdom, we find that a policy that increased walkability and people's perception of access to shops and facilities would lead to an increase in walking of about 36 min/person/week, valued at £13.65/person/week. When focussing on inactive residents, a policy that improved the walkability of the area would lead to guidelines for physical activity being reached by only 12.8% of the population who are currently inactive. Additional interventions would therefore be needed to encourage inactive residents to achieve the recommended levels of physical activity, as it appears that interventions that improve the walkability of an area are particularly effective in increasing walking among already active citizens, and, among the inactive ones, the best response is found among healthier, younger and wealthier citizens.
School of Biological Sciences, Gibson Institute, Institute for Global Food Security, Queen's University Belfast, United Kingdom; UKCRC Centre of Excellence for Public Health (NI), United Kingdom; Basque Centre for Climate Change (BC3), 48008, Bilbao, Spain. Electronic address: a.longo@qub.ac.uk.
Alberto
A
Longo
School of Biological Sciences, Gibson Institute, Institute for Global Food Security, Queen's University Belfast, United Kingdom; UKCRC Centre of Excellence for Public Health (NI), United Kingdom.
W George
WG
Hutchinson
School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, United Kingdom; UKCRC Centre of Excellence for Public Health (NI), United Kingdom.
Ruth F
RF
Hunter
School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, United Kingdom; UKCRC Centre of Excellence for Public Health (NI), United Kingdom.
Mark A
MA
Tully
School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, United Kingdom; UKCRC Centre of Excellence for Public Health (NI), United Kingdom.
Frank
F
Kee
D000293:Adolescent; D000328:Adult; D004779:Environment Design / Q000191:economics*; D015444:Exercise / Q000523:psychology; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D012111:Residence Characteristics; D011795:Surveys and Questionnaires; D014186:Transportation / Q000191:economics; D006113:United Kingdom; D016138:Walking / Q000191:economics / Q000523:psychology*; D055815:Young Adult
Demand response; Revealed preferences; United Kingdom; Valuation; Walking; Weak complementarity