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01.12.2015 | Study protocol | Ausgabe 1/2015 Open Access

BMC Public Health 1/2015

Providing NHS staff with height-adjustable workstations and behaviour change strategies to reduce workplace sitting time: protocol for the Stand More AT (SMArT) Work cluster randomised controlled trial

BMC Public Health > Ausgabe 1/2015
S. E. O’Connell, B. R. Jackson, C. L. Edwardson, T. Yates, S. J. H. Biddle, M. J. Davies, D. Dunstan, D. Esliger, L. Gray, P. Miller, F. Munir
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

FM, TY, CE, SB, LG, DE, MD, DD obtained funding for the research. All authors have contributed to the design of the study. LG is the trial statistician and developed the statistical analysis plan and PM developed the costs-analysis plan. SOC and BJ are the study co-ordinators. The first draft of this manuscript was produced by SOC and BJ and all authors have reviewed, edited and approved the final version.



High levels of sedentary behaviour (i.e., sitting) are a risk factor for poor health. With high levels of sitting widespread in desk-based office workers, office workplaces are an appropriate setting for interventions aimed at reducing sedentary behaviour. This paper describes the development processes and proposed intervention procedures of Stand More AT (SMArT) Work, a multi-component randomised control (RCT) trial which aims to reduce occupational sitting time in desk-based office workers within the National Health Service (NHS).


SMArT Work consists of 2 phases: 1) intervention development: The development of the SMArT Work intervention takes a community-based participatory research approach using the Behaviour Change Wheel. Focus groups will collect detailed information to gain a better understanding of the most appropriate strategies, to sit alongside the provision of height-adjustable workstations, at the environmental, organisational and individual level that support less occupational sitting. 2) intervention delivery and evaluation: The 12 month cluster RCT aims to reduce workplace sitting in the University Hospitals of Leicester NHS Trust. Desk-based office workers (n = 238) will be randomised to control or intervention clusters, with the intervention group receiving height-adjustable workstations and supporting techniques based on the feedback received from the development phase. Data will be collected at four time points; baseline, 3, 6 and 12 months. The primary outcome is a reduction in sitting time, measured by the activPALTM micro at 12 months. Secondary outcomes include objectively measured physical activity and a variety of work-related health and psycho-social measures. A process evaluation will also take place.


This study will be the first long-term, evidence-based, multi-component cluster RCT aimed at reducing occupational sitting within the NHS. This study will help form a better understanding and knowledge base of facilitators and barriers to creating a healthier work environment and contribute to health and wellbeing policy.

Trial registration

ISRCTN10967042. Registered 2 February 2015.
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