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"Pre-schoolers in the playground" an outdoor physical activity intervention for children aged 18 months to 4 years old: study protocol for a pilot cluster randomised controlled trial.
Barber SE, Jackson C, Akhtar S, Bingham DD, Ainsworth H, Hewitt C, Richardson G, Summerbell CD, Pickett KE, Moore HJ, Routen AC, O'Malley CL, Brierley S, Wright J. Barber SE, et al. Trials. 2013 Oct 9;14:326. doi: 10.1186/1745-6215-14-326. Trials. 2013. PMID: 24107473 Free PMC article. Clinical Trial.
Assessing the feasibility of evaluating and delivering a physical activity intervention for pre-school children: a pilot randomised controlled trial.
Barber SE, Jackson C, Hewitt C, Ainsworth HR, Buckley H, Akhtar S, Bingham DD, Routen AC, Summerbell C, Richardson G, Moore HJ, Pickett KE, O'Malley C, Brierley S, Wright J. Barber SE, et al. Pilot Feasibility Stud. 2016 Feb 18;2:12. doi: 10.1186/s40814-016-0052-4. eCollection 2016. Pilot Feasibility Stud. 2016. PMID: 27965832 Free PMC article.