title: Patterns of impact resulting from a 'sit less, move more' web-based program in sedentary office employees.
abstract: OBJECTIVE
  Encouraging office workers to 'sit less and move more' encompasses two public health priorities. However, there is little evidence on the effectiveness of workplace interventions for reducing sitting, even less about the longer term effects of such interventions and still less on dual-focused interventions. This study assessed the short and mid-term impacts of a workplace web-based intervention (Walk@WorkSpain, W@WS; 2010-11) on self-reported sitting time, step counts and physical risk factors (waist circumference, BMI, blood pressure) for chronic disease.
  
  
  METHODS
  Employees at six Spanish university campuses (n=264; 42±10 years; 171 female) were randomly assigned by worksite and campus to an Intervention (used W@WS; n=129; 87 female) or a Comparison group (maintained normal behavior; n=135; 84 female). This phased, 19-week program aimed to decrease occupational sitting time through increased incidental movement and short walks. A linear mixed model assessed changes in outcome measures between the baseline, ramping (8 weeks), maintenance (11 weeks) and follow-up (two months) phases for Intervention versus Comparison groups.
  
  
  RESULTS
  A significant 2 (group) × 2 (program phases) interaction was found for self-reported occupational sitting (F[3]=7.97, p=0.046), daily step counts (F[3]=15.68, p=0.0013) and waist circumference (F[3]=11.67, p=0.0086). The Intervention group decreased minutes of daily occupational sitting while also increasing step counts from baseline (446±126; 8,862±2,475) through ramping (+425±120; 9,345±2,435), maintenance (+422±123; 9,638±3,131) and follow-up (+414±129; 9,786±3,205). In the Comparison group, compared to baseline (404±106), sitting time remained unchanged through ramping and maintenance, but decreased at follow-up (-388±120), while step counts diminished across all phases. The Intervention group significantly reduced waist circumference by 2.1cms from baseline to follow-up while the Comparison group reduced waist circumference by 1.3cms over the same period.
  
  
  CONCLUSIONS
  W@WS is a feasible and effective evidence-based intervention that can be successfully deployed with sedentary employees to elicit sustained changes on "sitting less and moving more".
authors.affiliation: Departament de Ciències de l´Activitat Física, Universitat de Vic-Universitat Central de Catalunya, c/ Sagrada Família 7, 08500, Vic, Barcelona, Spain.
authors.forename: Anna
authors.initials: A
authors.lastname: Puig-Ribera
authors.affiliation: Departament de Ciències de l´Activitat Física, Universitat de Vic-Universitat Central de Catalunya, c/ Sagrada Família 7, 08500, Vic, Barcelona, Spain.
authors.forename: Judit
authors.initials: J
authors.lastname: Bort-Roig
authors.affiliation: Departamento de Educación Física y Deportiva, Universidad del País Vasco, Portal de Lasarte 71, 01007, Vitoria, Spain.
authors.forename: Angel M
authors.initials: AM
authors.lastname: González-Suárez
authors.affiliation: Facultad CC.EE. e do Deporte, Universidad de Vigo, Campus A Xunqueira s/n, 36005, Pontevedra, Spain.
authors.forename: Iván
authors.initials: I
authors.lastname: Martínez-Lemos
authors.affiliation: Physical Activity and Sport Sciences Department, FPCEE Blanquerna, Universitat Ramon Llull, c/Císter 34, 08022, Barcelona, Spain; Physical Therapy Department, FCS Blanquerna, Universitat Ramon Llull. Esport3 Association, c/Padilla 326-332, 08025, Barcelona, Spain.
authors.forename: Maria
authors.initials: M
authors.lastname: Giné-Garriga
authors.affiliation: Physical Therapy Department, FCS Blanquerna, Universitat Ramon Llull. Esport3 Association, c/Padilla 326-332, 08025, Barcelona, Spain.
authors.forename: Josep
authors.initials: J
authors.lastname: Fortuño
authors.affiliation: Department of Economics and Business, Universitat de Vic-Universitat Central de Catalunya, c/Sagrada Família 7, 08500, Vic, Barcelona, Spain.
authors.forename: Joan C
authors.initials: JC
authors.lastname: Martori
authors.affiliation: Unitat de Suport a la Recerca Metropolitana Nord, Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol), c/ Camí del Mig 36, 08303, Mataró, Barcelona, Spain.
authors.forename: Laura
authors.initials: L
authors.lastname: Muñoz-Ortiz
authors.affiliation: Departament de Salut i Acció Social, Universitat de Vic-Universitat Central de Catalunya, Vic, Barcelona, Spain.
authors.forename: Raimon
authors.initials: R
authors.lastname: Milà
authors.affiliation: School of Sport, Leeds Beckett University, Fairfax Hall, Headingley Campus, Leeds, LS6 3QS, United Kingdom.
authors.forename: Jim
authors.initials: J
authors.lastname: McKenna
authors.affiliation: The University of Queensland, School of Human Movement Studies, St. Lucia Campus, Brisbane, 4072, Australia.
authors.forename: Nicholas D
authors.initials: ND
authors.lastname: Gilson
mesh_terms: D000328:Adult; D001794:Blood Pressure; D015992:Body Mass Index; D002318:Cardiovascular Diseases / Q000517:prevention & control*; D005081:Exercise Therapy; D005260:Female; D006801:Humans; D020407:Internet; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D057185:Sedentary Behavior; D016896:Treatment Outcome
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