ClinicalTrials.gg
CompletedNCT04169646NEXproUpdated Mar 22, 2023

Prevention and Intervention of Neck Pain in Swiss Office-Workers

An interventional study of Multi-component intervention and Control in Neck Pain, Headache and Musculoskeletal Diseases, sponsored by Zurich University of Applied Sciences. Completed at 2 sites in Switzerland. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-03-22.

Sponsored by Zurich University of Applied Sciences · Not applicable, Interventional, and Prevention

Phase
Not applicable
Study type
Interventional
Enrollment
120
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 12 studies in Neck Pain with a site in Switzerland — 1 open to participants now, 1 under way, none of them phase 3. Neck Pain · Switzerland.

Started
2019
the only one that year
No phase
4 of 12
none open now
Registered
9th of 12
by date
Lead sponsor
1 of 12
Zurich University of Applied Sciences

Among the 12 studies in Neck Pain with a site in Switzerland, this one is the only one that started in 2019, is one of 4 with no phase, and was the 9th registered.

By phase

12 studies; the count open now beside each. This study's row is marked.

Observational8 · 1 open
No phasethis study4 · 0 open

By the year they started

First in 2006; this study’s year is marked. 1 started in 2019.

Size and results

Median enrollment 120 across the 4 interventional studies, 70 across the 8 observational. Of the 9 that completed or were terminated, 0 (0%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 12 studies in Neck Pain with a site in Switzerland, or all of them as a file.
02

Study summary

This study is the first that investigates the impact of a multi-component intervention combining current evidence of effective interventions with an adherence app to assess the potential benefits on productivity, neck pain, and headache.

Read the detailed description

Non-specific neck pain and headache are major economic and individual burdens in office-workers. The aim of this study is to investigate the effect of a multi-component intervention combining workstation ergonomics, health promotion information group workshops, neck exercises, and an app to enhance intervention adherence to assess possible reductions in the economic and individual burden of neck pain and headache in office workers.

This study is a stepped wedge cluster-randomized controlled trial. Eligible participants will be any office-worker aged 18-65 years from two Swiss organisations in the Canton of Zurich and Canton of Aargau, working more than 25 hours a week in predominantly sedentary office work and without serious health conditions of the neck. 120 voluntary participants will be assigned to 15 clusters which, at randomly selected time steps, switch from the control to the intervention group. The intervention will last 12 weeks and comprises workstation ergonomics, health promotion information group workshops, neck exercises and an adherence app. The primary outcome will be health-related productivity losses (presenteeism, absenteeism) using the Work Productivity and Activity Impairment Questionnaire. Secondary outcomes will include neck disability and pain. Physical and health outcomes (e.g. Neck Disability Index, muscle strength, and endurance), psychosocial outcomes (e.g. job-stress index, Fear-Avoidance Beliefs Questionnaire), workplace outcomes (e.g. workstation ergonomics), and individual outcomes (e.g. socio-demographic data, adherence to intervention) will be assessed. Measurements will take place at baseline, 4 months, 8 months, 12 months, 16 months, and 28 months after commencement. Data will be analysed on an 'intention to treat' basis and per protocol. Primary and secondary outcomes will be examined using linear mixed-effects models.

This study is the first that investigates the impact of a multi-component intervention combining current evidence of effective interventions with an adherence app to assess the potential benefits on productivity, neck pain, and headache. The outcomes will impact the individual, their workplace, as well as private and public policy by offering evidence for treatment and prevention of neck pain and headache in office-workers.

03

Conditions studied

  • Neck Pain
  • Headache
  • Musculoskeletal Diseases
  • Adherence, Patient
  • Absenteeism
  • Workplace
  • Health Promotion
  • Ergonomics
  • Efficiency
  • Presenteeism
  • Occupational Health
  • Surveys and Questionnaires
  • Adult
  • Exercise Therapy
  • Work Performance

Keywords

  • office-worker
  • neck-specific exercises
  • stepped wedge design
  • productivity
04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Swiss office-workers, who suffer from NP or want to take prevention of neck pain or headache
  • 18-65 years old
  • working more than 25 hours per week (0.6 full-time equivalent) in predominantly sedentary office work
  • be able to communicate in German (written, spoken)
  • have provided written

Exclusion criteria

Exclusion criteria:

  • previous trauma or injuries to the neck (NP grade 4)
  • specific diagnosed pathologies (e.g., congenital cervical abnormalities, stenosis, fracture, radiculopathy)
  • inflammatory condition (e.g., rheumatoid arthritis)
  • any history of cervical spine surgery
  • if exercise is (e.g., medical advice, own beliefs)
  • prolonged absence from work (more than four consecutive weeks) during the study intervention period
  • pregnant women
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Outcomes assessor)
Enrollment
120 participants (actual)

Study arms

  • Other
    Intervention

    Multi-component intervention

    Other: Multi-component intervention

  • Other
    Control

    Control

    Other: Control

Interventions

  • OtherMulti-component intervention

    Participants' workstation ergonomics will be assessed using an observation-based ergonomics assessment checklist for office-workers adapted to Swiss guidelines. Based on the initial assessment, best practice ergonomics will be applied individually using existing infrastructure. Participants will attend health promotion information group workshops for approximately one hour per week for 12 weeks. it. Participants will receive an individual progressive exercise programme aimed at conditioning the muscles of the neck and shoulder girdle. The exercises will be performed in groups (maximum of ten per group) at the workplace in a dedicated room, for approximately one hour (3x20 minutes) per week; once per week supervised by a physiotherapist, a human movement scientist, or a health scientist, and twice per week individually. Workshop session attendance will be recorded as an indication of adherence to health promotion. Adherence to neck exercises will be recorded with the Physitrack® app.

    Also known as: Workstation Ergonomics, Health promotion, Neck exercise, Adherence to intervention

  • OtherControl

    No intervention takes place during the control phase.

06

What researchers measure

Primary outcomes

  1. Change in NP-related productivity loss

    Change in NP-related productivity loss will be measured in percentages of the working time, using the Work Productivity and Activity Impairment Questionnaire for Specific Health Problem (WPAI German version) and converted into monetary units using individual earnings. Absenteeism is assessed by asking the participants about the number of hours missed because of NP as well as the number of hours they have actually worked. To assess presenteeism, the participants are asked to indicate on a 10-score scale how much the NP affected productivity while working, with 0 indicating no effect on productivity and 10 indicating total disability. Scoring rules of the developers of the questionnaire will then be used to obtain self-reported absenteeism and presenteeism expressed as impairment percentages. The monetary value for the lost productivity will be obtained for each individual by multiplying the impairment percentages by the individual gross wage.

    Time frame: change from baseline at 16 months

Secondary outcomes

  1. Neck pain

    Neck pain intensity, occurence and frequency will be measured based on existing questionnaires (Standardised Nordic questionnaires for the analysis of musculoskeletal Symptoms; Neuromuscular assessment in Elderly Workers with and without work related) (open questions and numeric pain rating scale ranging from 0 to 10). neck/shoulder trouble).

    Time frame: change from baseline at 16 months

  2. Neck Disability Index

    The German version of the Neck Disability Index (NDI) will be used to evaluate the extent to which NP interferes with vocational, recreational, social, and functional aspects of living. (score from 0 to 100)

    Time frame: change from baseline at 16 months

Other outcomes

  1. Physical activity level

    Short-form International Physical Activity Questionnaire (IPAQ German version) with data expressed as a continuous variable in metabolic equivalent of task (MET) min per week

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  2. Health related Quality of life

    The EuroQoL Five Dimension (ordinal scale) and EuroQoL visual analogue scale VAS (0-100 representing worst to best imaginable health state, respectively) will be used.

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  3. Job-Stress-Index

    The Job-Stress-Index provides the ratio between resources and work stressors. Normative statements (percentile ranks) will be given for representative groups of office-workers

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  4. Health beliefs

    Health beliefs will be assessed using three questions of the Fear-Avoidance Beliefs Questionnaire FABQ (dichotomous yes/no variable)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  5. Psychosocial workplace factors

    Psychosocial workplace factors will be measured using a questionnaire (Copenhagen Psychosocial Questionnaire)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  6. Workplace ergonomics

    observation-based ergonomics assessment checklist for office workers is adapted according to Swiss guidelines and used to assess the workplace ergonomics (dichotomous yes/no variable; score)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  7. Work implementation

    a single question asking whether the participant felt their workplace culture supported the intervention (dichotomous yes/no variable).

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  8. Adherence to intervention

    neck and shoulder exercise performance and health promotion session attendance are documented. Next to this, participant's adherence to intervention (workplace ergonomics, exercises, health promotion) is asked using a self-reported scale (ordinal scale)

    Time frame: after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  9. Participants' impression of change

    patients' global impression of change scale (PGIC) is used to reflect the participant's belief about the efficacy of intervention (numeric rating scale ranging from 0 to 10).

    Time frame: after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  10. Care seeking

    Evaluated by two questions: * "Have you received healthcare services (e.g. doctor, physiotherapist, or other) because of work-related neck trouble in the past 12 months?" (yes/no; what) * "Have you required pharmaceutical medications due to neck trouble or headache in the last week?" (yes/no; what)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  11. Breaks and Smartphone use

    three questions asking about the number of breaks during work, duration of each break (in minutes) and duration of daily smartphone use (in minutes)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  12. Job satisfaction

    single item based on a 10-point numeric rating scale

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  13. Movement control

    Movement control dysfunction tests for the cervical spine (dichotomous, positive/negative)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  14. Mobility of neck and head

    Mobility of the neck and head will be measured by an experienced and trained physiotherapist assessor using a CROM (range of motion, degree)

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  15. Muscle endurance

    Muscle endurance (time in seconds to task failure) of neck extensor and flexor muscles will be measured in a standardized testing position, either lying prone for neck extensors or supine for testing neck flexor muscles.

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  16. Muscle strength

    Muscle strength of neck extensor and flexor muscles and shoulder abductor muscles, in Newton peak force will be standardized measured with three repetitions and by using a handheld Dynamometer.

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  17. Pain pressure threshold

    Pain pressure threshold of the upper cervical spine (occiput, atlas) and of the trapezius muscle will be determined by using an Algometer.

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  18. Pain drawings

    Pain drawings: participants will be asked to complete their pain profile during the last week on two body charts (frontal and dorsal views) by using a pen. An operator will instruct the participants to shade their pain experience/complaints. The pain profile will include the aspects of pain extent (expressed as the percentage of the total body chart area where the pain will be reported), pain locations, pain intensity (using a numeric pain rating scale ranging from 0 to 10), location of the most painful spot, and pain intensity of the most painful spot (using a numeric pain rating scale ranging from 0 to 10).

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  19. Headache

    Headache will be measured using the questionnaire "headache impact test" (open questions and numeric pain rating scale ranging from 0 to 10).

    Time frame: baseline, after 4 months, after 8 months, after 12 months, after 16 months, after 28 months

  20. Pre-existing headache conditions

    Pre-existing headache conditions will be screened for by an adapted headache screening questionnaire, based on validated German questionnaires (German Language Questionnaire for Screening for Migraine, Tension-Type Headache, and Trigeminal Autonomic Cephalgias; German-Language Self-Administered Headache Questionnaire; Der Rostocker Kopfschmerzfragen-Komplex)

    Time frame: baseline

  21. Demographic information

    (self-reported) including employee's age (in years), sex, body-mass-index BMI (weight (kg) / height (m2)), duration of computer use/day (in minutes), occupation and income range (in CHF), working distance (in minutes, used transport system), general health conditions (diseases, nutrition, health literacy)

    Time frame: baseline, (after 4 months, after 8 months, after 12 months, after 16 months, after 28 months)

07

Study locations

2 sites
  • Kanton Aargau, Departement Bau, Verkehr und Umwelt
    Aarau, 5001, Switzerland
  • ZHAW
    Winterthur, 8400, Switzerland
08

References and documents

Publications

  • Aegerter AM, Deforth M, Volken T, Johnston V, Luomajoki H, Dressel H, Dratva J, Ernst MJ, Distler O, Brunner B, Sjogaard G, Melloh M, Elfering A; NEXpro Collaboration Group. A Multi-component Intervention (NEXpro) Reduces Neck Pain-Related Work Productivity Loss: A Randomized Controlled Trial Among Swiss Office Workers. J Occup Rehabil. 2023 Jun;33(2):288-300. doi: 10.1007/s10926-022-10069-0. Epub 2022 Sep 27. PubMed 36167936 ↗
  • Aegerter AM, Deforth M, Johnston V, Sjogaard G, Volken T, Luomajoki H, Dratva J, Dressel H, Distler O, Elfering A, Melloh M; NEXpro collaboration group. No evidence for an effect of working from home on neck pain and neck disability among Swiss office workers: Short-term impact of COVID-19. Eur Spine J. 2021 Jun;30(6):1699-1707. doi: 10.1007/s00586-021-06829-w. Epub 2021 Apr 4. PubMed 33817763 ↗
  • Aegerter AM, Deforth M, Sjogaard G, Johnston V, Volken T, Luomajoki H, Dratva J, Dressel H, Distler O, Melloh M, Elfering A; NEXpro Collaboration Group. No Evidence for a Decrease in Physical Activity Among Swiss Office Workers During COVID-19: A Longitudinal Study. Front Psychol. 2021 Feb 11;12:620307. doi: 10.3389/fpsyg.2021.620307. eCollection 2021. PubMed 33688857 ↗
  • Aegerter AM, Deforth M, Johnston V, Ernst MJ, Volken T, Luomajoki H, Brunner B, Dratva J, Sjogaard G, Elfering A, Melloh M; NEXpro collaboration group. On-site multi-component intervention to improve productivity and reduce the economic and personal burden of neck pain in Swiss office-workers (NEXpro): protocol for a cluster-randomized controlled trial. BMC Musculoskelet Disord. 2020 Jun 19;21(1):391. doi: 10.1186/s12891-020-03388-x. Erratum In: BMC Musculoskelet Disord. 2020 Jul 25;21(1):488. doi: 10.1186/s12891-020-03507-8. Dressler, Holger [corrected to Dressel, Holger]. PubMed 32560714 ↗

Individual participant data

Plan to share: Yes — After the statistical analysis of this trial, the NEXpro team will make every endeavour to publish data in a journal (e.g. medical, health sciences). In particular, the following publications are planned: study protocol, primary outcome (productivity analysis), and several studies on the secondary and additional outcomes (e.g. neck pain analysis).

Supporting information: Study protocol

Time frame: From June 2020 on (publication)

Access criteria: Open access

Data sharing details ↗ · pubmed.ncbi.nlm.nih.gov

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Oct 2019 to primary completion in Jul 2022, 33 months.

Of 763 non-industry interventional studies with no phase under Neck Pain, half reached primary completion within 7 months of starting (the median), counting those still running; a quarter within 3 and three quarters within 15. This study's 33 months is above that.

Counting every sponsor, half of 772 studies reached it within 7 months; a quarter within 3 and three quarters within 15.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 13, 2019
First posted
Nov 20, 2019
StartActual
Oct 28, 2019
Primary completionActual
Jul 31, 2022
CompletionActual
Jul 31, 2022
Last update
Mar 22, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 22, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04169646
Lead sponsor
Zurich University of Applied Sciences
Collaborators
Swiss National Science Foundation
Responsible party
Markus Melloh (Principal Investigator, Zurich University of Applied Sciences) — Principal investigator
First posted
Nov 20, 2019
Start date
Oct 28, 2019
Primary completion
Jul 31, 2022
Completion
Jul 31, 2022
Last update
Mar 22, 2023

Study contacts

Markus Melloh, Prof
principal investigator · ZHAW School of Health Professions

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Mar 2023. You cannot join it, but the record below documents what was studied.

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