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Reducing sedentary time in adults at risk of type 2 diabetes: Process evaluation of the STAND (Sedentary Time and Diabetes) RCT

Biddle SJH, Edwardson CL, Gorely T, Wilmot EG, Yates T, Nimmo MA, Khunti K & Davies MJ (2017) Reducing sedentary time in adults at risk of type 2 diabetes: Process evaluation of the STAND (Sedentary Time and Diabetes) RCT, BMC Public Health, 17 (1), Art. No.: 80.


Reducing sedentary behaviour may have important health implications. This study evaluated the potential enablers and barriers for outcomes of a randomised controlled trial (RCT) designed to evaluate a pragmatic education based intervention designed to reduce sedentary (sitting) behaviour in young adults at high risk of type 2 diabetes. 
Data were collected from participants in the intervention group immediately after an educational workshop addressing sedentary time and diabetes risk (n = 71), through phone interviews 6 weeks (n = 45) after the workshop, and at the conclusion of the 12-month trial (n = 10). The two education session facilitators were also interviewed about the intervention. 
The RCT showed no difference in sedentary time at 12months between intervention and control arms. The lack of behaviour change appeared not to be attributed to the workshops, which were well led and very favourably received according to feedback. However, factors contributing to this lack of behaviour change include lack of perceived health risk from baseline measures feedback; the preference to adopt physically active behaviours rather than to sit less; certain barriers to sitting less; motivational drift after the 3-month follow-up measurements where participants had no contact for a further 9months; and, for some, unreliability of the self-monitoring tool. 
The workshop was well led and well received by the attendees but future interventions need to consider more contact with participants, discuss any specific benefits around simply standing to reduce sitting time, address the barriers to sitting less, and provide a more user-friendly and reliable self-monitoring tool. 
Trial registration 
Current controlled trials ISRCTN08434554, MRC project 91409. Registered retrospectively on 22 February 2011.

AuthorsBiddle Stuart J H, Edwardson Charlotte L, Gorely Trish, Wilmot Emma G, Yates Thomas, Nimmo Myra A, Khunti Kamlesh, Davies Melanie J
Publication date14/01/2017
Publication date online14/01/2017
Date accepted by journal14/12/2016
PublisherBioMed Central
ISSN 1471-2458

bmc Public Health: Volume 17, Issue 1 (2017)

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