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Table 3 Intervention effects, listed by theoretical basis

From: Effects of workplace-based dietary and/or physical activity interventions for weight management targeting healthcare professionals: a systematic review of randomised controlled trials

Study Behaviour change theory/theories used to
develop intervention* 		Study quality score Follow-up from baseline Body weight BMI Body fat% Waist circumference Waist-hip ratio Total energy intake Total fat intake Saturated fat intake % Energy fat Fruit intake Vegetable intake Fibre intake Diet score MPA VPA Total steps Self-reported PA
Armitage 2001 [44] The Trans Theoretical Model of Behavioural Change Moderate 5 months        ↑ ↑ ↓         
Racette 2009 [48] The Trans Theoretical Model of Behavioural Change Moderate 6 months    ↓ ↓     ↑   ↑ ↑       ↑
12 months ↑ ↑       ↑   ↑ ↑       ↑
Lemon 2010 [50] Diffusion of Innovation Theory, the Ecologic Conceptual Framework, the Health Belief Model, Organizational Development Theory, Social Cognitive Theory and the Theory of Reasoned Action Moderate 12 months   ↓                
24 months   ↓
Strijk 2012 [56] Study used theoretical constructs to inform the design of each specific component of the intervention but did not reference any specific theory used Weak 6 months           ↑     ↓ ↓   ↑
Gamble 1993 [42] No theory reported Moderate 11 weeks ↓   ↓               
Barratt 1994 [52] No theory reported Weak 3 months ↓                 
6 months ↑      ↑   ↓ ↓    ↑      
Cockroft 1994 [43] No theory reported Weak 6 months   ↑            ↓     ↑
Gerdle 1995 [46] No theory reported Weak 12 months ↓                 
Aldana 2005 [34] No theory reported Moderate 6 weeks ↑ ↑ ↑    ↓ ↑ ↑ ↑ ↑ ↑ ↑     ↑  
6 months ↑ ↑ ↑    ↑ ↑ ↑ ↑ ↑ ↑ ↑     ↓  
Brox 2005 [53] No theory reported Weak 6 months                  ↑
Von Thiel Schwarz 2008 [47] No theory reported Moderate 6 months                  ↑
12 months      ↑             ↑
Hewitt 2008 [45] No theory reported Strong 4 weeks ↓ ↓                
8 weeks ↓ ↓                
12 weeks ↓ ↓                
Christensen 2011 [36] No theory reported Strong 3 months ↑ ↑ ↑ ↑ ↓             
12 months ↑ ↑ ↑ ↑  
  1. *Reported by study authors; ↑ = Indicates a statistically significant effect in favour of the intervention; ↓ = Indicates a non-significant effect of intervention; BMI = body mass index, MPA = Moderate physical activity, VPA = Vigorous physical activity, PA = Physical activity; Blank cells = the outcome was not reported.
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BMC Obesity

ISSN: 2052-9538

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