Effects of Three Warm-up Interventions at the Workplace Among Vineyard Workers - a Protocol Study

Not Applicable

Completed

• Conditions: Pain; Injuries
• Interventions: Other: Stretching Warm-up; Other: Dynamic Warm-up; Other: Hybrid Warm-up

• Registration Number: NCT05425693
• Lead Sponsor: Opti'Mouv

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.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-11-01
• Primary Completion: 2022-05-31
• Study Completion: 2022-05-31
• Status Verified: 2022-06
• Study First Submitted: 2022-06-13
• Study First Submitted QC: 2022-06-16
• Last Update Submitted: 2022-06-16
• Study First Posted: 2022-06-21
• Last Update Posted: 2022-06-21

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 120

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Stretching warm-up intervention	Stretching Warm-up	-
Dynamic warm-up intervention	Dynamic Warm-up	-
Hybrid warm-up intervention	Hybrid Warm-up	-

Primary Outcome Measures

Name	Time	Method
Perceived pain intensity	Pain intensity will be rated after three hour of work (Time 5)	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 three hours of work (Time 5)	number of grapevine pruned

Secondary Outcome Measures

Name	Time	Method
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.
Readiness to work	Time 2	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	After three hour of work (Time 5)	Handgrip Strength
Flexibility	After three hour of work (Time 5)	Flexibility of the shoulders - Back scratch test
Heart rate	Time 5	Heart rate with a heart rate monitor placed on the wrist
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 5	The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).

Trial Locations

Locations (1)

OptiMouv; 🇫🇷 Pauillac, Gironde, France