title: Field experiment of a very brief worksite intervention to improve nutrition among health care workers.
abstract: Despite the potential of worksite interventions to boost productivity and save insurance costs, they tend to be costly and tested in nonrandomized trials. The aim of the present study was to test the ability of a very brief worksite intervention based on implementation intentions to improve nutrition among health care workers. Seventy-nine health care workers were randomly allocated to a control condition or to form implementation intentions using standard instructions or with a supporting tool. Fruit intake and metacognitive processing (operationalized as awareness of standards, self-monitoring and self-regulatory effort) were measured at baseline and follow-up. Participants who formed implementation intentions ate significantly more fruit and engaged in significantly more metacognitive processing at follow-up than did participants in the control condition (ds > .70). The findings support the efficacy of implementation intentions for increasing fruit intake in health care workers and preliminary support for the utility of a tool to support implementation intention formation.
authors.affiliation: Manchester Centre for Health Psychology, School of Psychological Sciences, Manchester Academic Health Science Centre, University of Manchester, Coupland Street, Oxford Road, Manchester, M13 9PL, UK, chris.armitage@manchester.ac.uk.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Armitage
mesh_terms: D000328:Adult; D001364:Awareness; D005260:Female; D005638:Fruit; D006282:Health Personnel; D006293:Health Promotion; D006801:Humans; D033182:Intention; D008297:Male; D000067489:Metacognition; D008875:Middle Aged; D009752:Nutritional Status; D000068356:Self-Control; D017132:Workplace; D055815:Young Adult
references.citation: Psychol Bull. 1982 Jul;92(1):111-35
references.pmid: 7134324
references.citation: Health Psychol. 2009 Nov;28(6):690-701
references.pmid: 19916637
references.citation: Trends Cogn Sci. 2004 Dec;8(12):539-46
references.pmid: 15556023
references.citation: Health Psychol. 2008 May;27(3):379-87
references.pmid: 18624603
references.citation: J Nutr Educ Behav. 2006 Jan-Feb;38(1):25-9
references.pmid: 16595275
references.citation: Behav Res Methods. 2008 Aug;40(3):879-91
references.pmid: 18697684
references.citation: J Consult Clin Psychol. 2006 Feb;74(1):141-51
references.pmid: 16551151
references.citation: Am J Epidemiol. 2004 May 1;159(9):900-9
references.pmid: 15105183
references.citation: Behav Ther. 2014 Sep;45(5):700-7
references.pmid: 25022780
references.citation: Alcohol Alcohol. 2012 Mar-Apr;47(2):156-9
references.pmid: 22253222
references.citation: Br J Psychiatry. 2016 May;208(5):470-6
references.pmid: 26743808
references.citation: Prev Chronic Dis. 2004 Jul;1(3):A04
references.pmid: 15670425
references.citation: Health Psychol. 2010 Sep;29(5):529-38
references.pmid: 20836608
references.citation: Psychol Health. 2010 Dec;25(10):1129-45
references.pmid: 20309777
references.citation: Scand J Work Environ Health. 2012 Sep;38(5):393-408
references.pmid: 22270562
references.citation: Psychol Rev. 2002 Oct;109 (4):679-709
references.pmid: 12374324
references.citation: Appetite. 1982 Sep;3(3):283-90
references.pmid: 7159080
references.citation: Pers Soc Psychol Bull. 2003 Jan;29(1):86-95
references.pmid: 15272962
references.citation: Neuroreport. 2007 May 7;18(7):653-7
references.pmid: 17426593
references.citation: Prev Sci. 2012 Dec;13(6):635-43
references.pmid: 23054196
references.citation: Br J Soc Psychol. 2006 Mar;45(Pt 1):87-106
references.pmid: 16573874
references.citation: J Am Diet Assoc. 2000 Dec;100(12):1511-21
references.pmid: 11138444
references.citation: J Med Internet Res. 2011 Nov 24;13(4):e100
references.pmid: 22126827
references.citation: Health Psychol. 2008 Sep;27(5):557-66
references.pmid: 18823182
references.citation: J Abnorm Child Psychol. 1985 Sep;13(3):343-56
references.pmid: 4045006
references.citation: J Consult Clin Psychol. 1983 Jun;51(3):390-5
references.pmid: 6863699
references.citation: Br J Soc Psychol. 2008 Sep;47(Pt 3):373-95
references.pmid: 18096108