Physical Activity Clinical Trial
Official title:
A Mixed-methods Evaluation of Sit-stand Workstations in an Office Setting: a Randomised Controlled Trial
Verified date | July 2015 |
Source | Liverpool John Moores University |
Contact | n/a |
Is FDA regulated | No |
Health authority | United Kingdom: Research Ethics Committee |
Study type | Interventional |
The purpose of this study is to investigate whether a device that allows office workers to sit or stand whilst working can reduce their sitting time at work and improve their health over 8 weeks.
Status | Completed |
Enrollment | 47 |
Est. completion date | December 2013 |
Est. primary completion date | December 2013 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - full-time member of staff - access to a work telephone and desktop computer with internet Exclusion Criteria: - have a cardiovascular or metabolic disease - taking any medication - pregnant - planned absence > 1 week during the trial |
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Basic Science
Country | Name | City | State |
---|---|---|---|
United Kingdom | Liverpool John Moores University | Liverpool | Merseyside |
Lead Sponsor | Collaborator |
---|---|
Liverpool John Moores University |
United Kingdom,
Batterham AM, Hopkins WG. Making meaningful inferences about magnitudes. Int J Sports Physiol Perform. 2006 Mar;1(1):50-7. — View Citation
Hopkins WG, Marshall SW, Batterham AM, Hanin J. Progressive statistics for studies in sports medicine and exercise science. Med Sci Sports Exerc. 2009 Jan;41(1):3-13. doi: 10.1249/MSS.0b013e31818cb278. Review. — View Citation
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change from baseline in workplace sitting time at 4 and 8 weeks | An ecological momentary assessment (EMA) diary assessed time spent sitting, standing, walking and in other activities during work hours over 5 days (Monday-Friday). At 15-minute intervals participants used a diary to record their main behaviour in response to the question: "What are you doing right now?" The options were sitting, standing, walking or other. If other was selected, participants were instructed to write the activity they were doing. Time spent in each behaviour per day was estimated by multiplying the frequency of recordings by 15. A diary day was considered valid if data entries were provided for =75% of time spent at work. Time spent in each behaviour was calculated for each valid day and means were calculated from valid days. To be retained for analyses, participants had to provide =2 valid days at each time point. |
Baseline (week 0), Mid-intervention (4 weeks), End-intervention (8 weeks) | No |
Secondary | Change from baseline in workplace standing time at 4 and 8 weeks | An ecological momentary assessment (EMA) diary assessed time spent sitting, standing, walking and in other activities during work hours over 5 days (Monday-Friday). At 15-minute intervals participants used a diary to record their main behaviour in response to the question: "What are you doing right now?" The options were sitting, standing, walking or other. If other was selected, participants were instructed to write the activity they were doing. Time spent in each behaviour per day was estimated by multiplying the frequency of recordings by 15. A diary day was considered valid if data entries were provided for =75% of time spent at work. Time spent in each behaviour was calculated for each valid day and means were calculated from valid days. To be retained for analyses, participants had to provide =2 valid days at each time point. |
Baseline (week 0), Mid-intervention (4 weeks), End-intervention (8 weeks) | No |
Secondary | Change from baseline in workplace walking time at 4 and 8 weeks | An ecological momentary assessment (EMA) diary assessed time spent sitting, standing, walking and in other activities during work hours over 5 days (Monday-Friday). At 15-minute intervals participants used a diary to record their main behaviour in response to the question: "What are you doing right now?" The options were sitting, standing, walking or other. If other was selected, participants were instructed to write the activity they were doing. Time spent in each behaviour per day was estimated by multiplying the frequency of recordings by 15. A diary day was considered valid if data entries were provided for =75% of time spent at work. Time spent in each behaviour was calculated for each valid day and means were calculated from valid days. To be retained for analyses, participants had to provide =2 valid days at each time point. |
Baseline (week 0), Mid-intervention (4 weeks), End-intervention (8 weeks) | No |
Secondary | Change from baseline in flow-mediated dilation (FMD) at 8 weeks | A measure of endothelial dysfunction, which is an early and integral manifestation of atherosclerotic disease. | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in carotid artery intima media thickness (cIMT) at 8 weeks | An early subclinical marker of structural atherosclerosis. | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in plasma glucose at 8 weeks | Assessed via standard venepuncture technique | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in triglycerides at 8 weeks | Assessed via standard venepuncture technique | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in total cholesterol at 8 weeks | Assessed via standard venepuncture technique | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in musculoskeletal discomfort or pain at the neck/shoulders at 8 weeks | Assessed via an adapted questionnaire from a previous trial | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in musculoskeletal discomfort or pain at the lower back at 8 weeks | Assessed via an adapted questionnaire from a previous trial | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in musculoskeletal discomfort or pain at the upper back at 8 weeks | Assessed via an adapted questionnaire from a previous trial | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Change from baseline in body mass index at 8 weeks | Calculated from assessment of stature and body mass | Baseline (week 0), End-intervention (8 weeks) | No |
Secondary | Acceptability of the sit-stand workstation | (Intervention arm only) Assessed via a 19-item five-point Likert scale (1 strongly disagree, 2 disagree, 3 neutral, 4 agree, 5 strongly disagree) adapted from a previous trial. | End-intervention (8 weeks) | No |
Secondary | Feasibility of the sit-stand workstation | (Intervention arm only) Assessed via a 19-item five-point Likert scale (1 strongly disagree, 2 disagree, 3 neutral, 4 agree, 5 strongly disagree) adapted from a previous trial. | End-intervention (8 weeks) | No |
Secondary | Acceptability of the sit-stand workstation | (Intervention arm only) Interviews | End-intervention (8 weeks) | No |
Secondary | Feasibility of the sit-stand workstation | (Intervention arm only) Interviews | End-intervention (8 weeks) | No |
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