1. Department of Health. Start Active, Stay Active: A Report on Physical Activity for Health from the Four Home Countries' Chief Medical Officers, Department of Health; London, 2011.
2. Hallal PC, Andersen LB, Bull FC, Guthold R, Haskell W, Ekelund U. Global physical activity levels: surveillance progress, pitfalls, and prospects. Lancet. 2012;380(9838): 247–57. doi: 10.1016/S0140-6736(12)60646-1 22818937
3. Hamer M, Chida Y. Active commuting and cardiovascular risk: a meta-analytic review. Prev Med. 2008;46(1): 9–13. 17475317
4. Woodcock J, Edwards P, Tonne C, Armstrong BG, Ashiru O, Banister D, et al. Public health benefits of strategies to reduce greenhouse-gas emissions: urban land transport. Lancet. 2009;374 (9705):1930–1943. doi: 10.1016/S0140-6736(09)61714-1 19942277
5. Rasmussen MG, Grøntved A, Blond K, Overvad K, Tjønneland A, Jensen MK, et al. Associations between recreational and commuter cycling, changes in cycling, and type 2 diabetes risk: a cohort study of Danish men and women. PLoS Med. 2016;13:e1002076.
6. Sahlqvist S, Goodman A, Simmons R, Cavill N, Foster C, Luben R et al. The association of cycling with all-cause, cardiovascular and cancer mortality: findings from the population-based EPIC-Norfolk cohort. BMJ Open. 2013; 3(11):e003797. doi: 10.1136/bmjopen-2013-003797 24231462
7. Stewart G, Anokye NK, Pokhrel S. What interventions increase commuter cycling? A systematic review. BMJ Open. 2015;5(8):e007945. doi: 10.1136/bmjopen-2015-007945 26275902
8. Yang L, McMinn A, Sahlqvist S, Griffin S, Ogilvie D. Interventions to promote cycling: systematic review. BMJ. 2010;341:c5293. doi: 10.1136/bmj.c5293 20959282
9. Hawe P. Minimal, negligible and negligent interventions. Soc Sci Med. 2015;138:265–8. doi: 10.1016/j.socscimed.2015.05.025 26032734
10. Sallis JF, Cerin E, Conway TL, Adams MA, Frank LD, Pratt M, et al. Physical activity in relation to urban environments in 14 cities worldwide: a cross-sectional study. Lancet. 2016: S0140-6736(15)01284-2.
11. Craig P, Cooper C, Gunnell D, Haw S, Lawson K, Macintyre S, et al. Using natural experiments to evaluate population health interventions: new Medical Research Council guidance. J Epidemiol Community Health. 2012;66 (12):1182–6. doi: 10.1136/jech-2011-200375 22577181
12. Ogilvie D, Egan M, Hamilton V, Petticrew M. Systematic reviews of health effects of social interventions: 2. Best available evidence: how low should you go? J Epidemiol Community Health. 2005;59(10):886–92. 16166365
13. Kessler R, Glasgow R. A proposal to speed translation of healthcare research into practice: dramatic change is needed. Am J Prev Med. 2011;40(6),637–44. doi: 10.1016/j.amepre.2011.02.023 21565657
14. Public Health England. Everybody active, every day: a framework to embed physical activity into daily life, London: Public Health England; 2014.
15. Reis R, Salvo D, Ogilvie D, Lambert E, Goenka S, Brownson R. Scaling up physical activity interventions across the globe: stepping up to larger and smarter approaches to get people moving. Lancet, in press.