Trial Outcomes & Findings for Effects of Installing Height-adjustable Workstations on Office Workers Workplace Sitting Time and Productivity (NCT NCT02932787)
NCT ID: NCT02932787
Last Updated: 2020-04-28
Results Overview
The amount of time a participant spends sitting whilst in the workplace (minutes). This was measured using a thigh-worn ActivPAL accelerometer.
COMPLETED
NA
31 participants
Baseline (0 weeks), 4 weeks after installation of height-adjustable workstations
2020-04-28
Participant Flow
Office-based workplace (UK)
Participant milestones
| Measure |
Height-adjustable Workstation
Participants received a height-adjustable workstation for four weeks
Height-adjustable workstation
|
Control
|
|---|---|---|
|
Overall Study
STARTED
|
22
|
9
|
|
Overall Study
COMPLETED
|
22
|
9
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Effects of Installing Height-adjustable Workstations on Office Workers Workplace Sitting Time and Productivity
Baseline characteristics by cohort
| Measure |
Height-adjustable Workstation
n=22 Participants
Participants received a height-adjustable workstation for four weeks
Height-adjustable workstation
|
Control
n=9 Participants
|
Total
n=31 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Age, Categorical
<=18 years
|
0 Participants
n=93 Participants
|
0 Participants
n=4 Participants
|
0 Participants
n=27 Participants
|
|
Age, Categorical
Between 18 and 65 years
|
22 Participants
n=93 Participants
|
9 Participants
n=4 Participants
|
31 Participants
n=27 Participants
|
|
Age, Categorical
>=65 years
|
0 Participants
n=93 Participants
|
0 Participants
n=4 Participants
|
0 Participants
n=27 Participants
|
|
Age, Continuous
|
46 years
STANDARD_DEVIATION 10.3 • n=93 Participants
|
37 years
STANDARD_DEVIATION 7.26 • n=4 Participants
|
43.38 years
STANDARD_DEVIATION 9.42 • n=27 Participants
|
|
Sex: Female, Male
Female
|
12 Participants
n=93 Participants
|
7 Participants
n=4 Participants
|
19 Participants
n=27 Participants
|
|
Sex: Female, Male
Male
|
10 Participants
n=93 Participants
|
2 Participants
n=4 Participants
|
12 Participants
n=27 Participants
|
|
Region of Enrollment
United Kingdom
|
22 Participants
n=93 Participants
|
9 Participants
n=4 Participants
|
31 Participants
n=27 Participants
|
PRIMARY outcome
Timeframe: Baseline (0 weeks), 4 weeks after installation of height-adjustable workstationsThe amount of time a participant spends sitting whilst in the workplace (minutes). This was measured using a thigh-worn ActivPAL accelerometer.
Outcome measures
| Measure |
Height-adjustable Workstation
n=11 Participants
Participants that received a height-adjustable workstation
|
Control
n=6 Participants
Participants that did not receive a height-adjustable workstation
|
|---|---|---|
|
Change in Workplace Sedentary Time
4-Weeks after installation
|
229 Minutes
Standard Deviation 46.35
|
338 Minutes
Standard Deviation 70.4
|
|
Change in Workplace Sedentary Time
Baseline
|
369 Minutes
Standard Deviation 43.75
|
355 Minutes
Standard Deviation 73.69
|
SECONDARY outcome
Timeframe: Baseline (0 weeks), 4 weeks after installation of height-adjustable workstationsSelf-reported absolute absenteeism (the amount of time a participant was absent from work for during the previous 7-days) measured using the World Health Organisation Health and Work Performance Questionnaire. This is calculated in relation to a participants contracted hours, therefore a negative score shows that a participant worked less than they are contracted to, where as a positive score means a participant reported working more hours than they are contracted to.
Outcome measures
| Measure |
Height-adjustable Workstation
n=21 Participants
Participants that received a height-adjustable workstation
|
Control
n=7 Participants
Participants that did not receive a height-adjustable workstation
|
|---|---|---|
|
Change in Workplace Absenteeism Using the World Health Organisation Health and Work Performance Questionnaire
Baseline Absenteeism
|
-4 Hours worked in last 7-days
Interval -68.0 to 28.0
|
-8 Hours worked in last 7-days
Interval -24.0 to 8.0
|
|
Change in Workplace Absenteeism Using the World Health Organisation Health and Work Performance Questionnaire
4-Week Absenteeism
|
0 Hours worked in last 7-days
Interval -80.0 to 60.0
|
0 Hours worked in last 7-days
Interval -48.0 to 60.0
|
SECONDARY outcome
Timeframe: Baseline (0 weeks), 4 weeks after installation of height-adjustable workstationsSelf-reported absolute presenteeism (an employees productivity during working hours) measured using the World Health Organisation Health and Work Performance Questionnaire. The higher the percentage, the more productive a participant felt they were. 100% means that they felt they were productive the whole time they were working. Presenteeism can be impacted upon by illness and other health conditions, if a person was feeling ill or had a back problem, this may mean that they are less productive whilst at work.
Outcome measures
| Measure |
Height-adjustable Workstation
n=21 Participants
Participants that received a height-adjustable workstation
|
Control
n=7 Participants
Participants that did not receive a height-adjustable workstation
|
|---|---|---|
|
Change in Workplace Presenteeism Using the World Health Organisation Health and Work Performance Questionnaire
Baseline Presenteeism
|
80 Percentage of job able to perform
Interval 40.0 to 100.0
|
80 Percentage of job able to perform
Interval 60.0 to 90.0
|
|
Change in Workplace Presenteeism Using the World Health Organisation Health and Work Performance Questionnaire
4-Week Presenteeism
|
80 Percentage of job able to perform
Interval 50.0 to 100.0
|
90 Percentage of job able to perform
Interval 70.0 to 100.0
|
Adverse Events
Height-adjustable Workstation
Control
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place