Injuries, Pain
Conditions
Keywords
Pain / injuries / warm-up intervention / vineyard workers / physical activity
Brief summary
Background: Physical activity programs at the workplace have shown positive results on physical capacities and pain for several years. Due to the duration of the training session, the need of instructor, and the need of a place to practice, these programs are commonly complex to implement. For this reason, many of companies, especially companies in manual sectors are turning to another solution, i.e warm-up intervention before work shift. These interventions present on paper numerous advantages such as short duration, no need to specifically allocate a place in companies and the possibility to perform exercises in working clothes… Surprisingly, while positive effects of warm-up interventions on pain, performance physical and psychological capacities, are expansively reported in sport context, effects of workplace warm-up intervention are lacking. Therefore, the aims of this study are (1) to implement such intervention among vineyard-workers, workers highly exposed to heavy physical workload and pain and (2) to assess their effects on physical (pain, strength, flexibility) and psychological (workload) functions and also on work-related outcomes (work performance, readiness to work) Methods: A cluster randomized study will be implemented among French vineyard workers. Four groups of 30 participants will be constituted; corresponding to four different conditions: (1) hybrid warm-up intervention (HWU); (2) dynamic warm-up intervention (DWU); (3) stretching warm-up intervention (SWU); (4) no warm-up intervention (NWU). A total of 120 vineyard-workers will be recruited to participate in the study. Discussion: The results will provide more evidence about the short-term effects of warm-up interventions at the workplace, and will provide more evidence on which warm-up modality is the most effective on pain, performance, physical and psychological capacities among vineyard workers.
Interventions
OTHERHybrid Warm-up
Dynamic + stretching exercises
OTHERDynamic Warm-up
Dynamic exercises
OTHERStretching Warm-up
Stretching exercises
Sponsors
University Grenoble Alps
Opti'Mouv
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Outcomes Assessor)
Intervention model description
A cluster randomized study will be implemented among French vineyard workers. Four groups of 30 participants will be constituted; corresponding to four different conditions: (1) hybrid warm-up intervention (HWU); (2) dynamic warm-up intervention (DWU); (3) stretching warm-up intervention (SWU); (4) no warm-up intervention (NWU). A total of 120 vineyard-workers will be recruited to participate in the study.
Eligibility
Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes
Inclusion criteria
* working full time * having at least 1 year of employment in the company
Exclusion criteria
\- not to present previous surgery in the low back region in the last 12 months
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Perceived pain intensity | Pain intensity will be rated for the last 3 months | Participants will be asked to rate their pain intensity over 15 anatomical locations using a 0-10 numerical rating scale (NRS), where 0 is used to indicate no pain while 10 indicate the worst possible pain. |
| Work performance | After one hour of work (Time 3) | number of grapevine pruned |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Heart rate | Time 0 | Heart rate with a heart rate monitor placed on the wrist |
| Readiness to work | Time 1 | Readiness to work was rated subjectively using a 0-10 numerical rating scale, where 0 was used to indicate not at all ready and 10 perfectly ready to work |
| Handgrip Strength | Before the warm-up intervention (Time 0) | Handgrip Strength |
| Workload | Time 5 | NASA Task Load Index (NASA TLX) is a multi-dimensional scale used to estimate workload from a worker. |
| Visuomotor reaction time | Time 0 | The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT). |
| Work quality | Time 5 | Work quality will be assessed by the workers supervisors, with the same 0-10 scale in every company, developed by the research team and a vineyard growing specialist. |
| Flexibility | Before the warm-up intervention (Time 0) | Flexibility of the trunk and the hamstrings - Finger to floor test |
Countries
France
Outcome results
None listed