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

Comparison of the Effects of Three Warm-up Interventions at the Workplace on Pain, Heart Rate, Work Performance and Physical Capacities Among Vineyard Workers - a Protocol Study

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.

Study Overview

• Status: Completed
• Conditions: Pain; Injuries
• Intervention / Treatment: Other: Hybrid Warm-up; Other: Dynamic Warm-up; Other: Stretching Warm-up

• Study Type: Interventional
• Enrollment (Actual): 120
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Gironde
    • Pauillac, Gironde, France, 33250
      • OptiMouv

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

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 Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Hybrid warm-up intervention	Other: Hybrid Warm-up; Dynamic + stretching exercises
Experimental: Dynamic warm-up intervention	Other: Dynamic Warm-up; Dynamic exercises
Experimental: Stretching warm-up intervention	Other: Stretching Warm-up; Stretching exercises
No Intervention: No warm-up intervention

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Perceived pain intensity	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".	Pain intensity will be rated for the last 3 months
Perceived pain intensity	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".	Pain intensity will be rated before the warm-up intervention (Time 0)
Perceived pain intensity	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".	Pain intensity will be rated after the warm-up intervention (Time 1)
Perceived pain intensity	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".	Pain intensity will be rated at the beginning of the working activity (Time 2)
Perceived pain intensity	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".	Pain intensity will be rated after the first hour of work (Time 3)
Perceived pain intensity	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".	Pain intensity will be rated after the second hour of work (Time 4)
Perceived pain intensity	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".	Pain intensity will be rated after three hour of work (Time 5)
Work performance	number of grapevine pruned	After one hour of work (Time 3)
Work performance	number of grapevine pruned	After two hours of work (Time 4)
Work performance	number of grapevine pruned	After three hours of work (Time 5)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Handgrip Strength	Handgrip Strength	Before the warm-up intervention (Time 0)
Handgrip Strength	Handgrip Strength	After the warm-up intervention (Time 1)
Handgrip Strength	Handgrip Strength	After three hour of work (Time 5)
Flexibility	Flexibility of the trunk and the hamstrings - Finger to floor test	Before the warm-up intervention (Time 0)
Flexibility	Flexibility of the trunk and the hamstrings - Finger to floor test	After the warm-up intervention (Time 1)
Flexibility	Flexibility of the trunk and the hamstrings - Finger to floor test	After three hour of work (Time 5)
Flexibility	Flexibility of the shoulders - Back scratch test	Before the warm-up intervention (Time 0)
Flexibility	Flexibility of the shoulders - Back scratch test	After the warm-up intervention (Time 1)
Flexibility	Flexibility of the shoulders - Back scratch test	After three hour of work (Time 5)
Heart rate	Heart rate with a heart rate monitor placed on the wrist	Time 0
Heart rate	Heart rate with a heart rate monitor placed on the wrist	Time 1
Heart rate	Heart rate with a heart rate monitor placed on the wrist	Time 2
Heart rate	Heart rate with a heart rate monitor placed on the wrist	Time 3
Heart rate	Heart rate with a heart rate monitor placed on the wrist	Time 4
Heart rate	Heart rate with a heart rate monitor placed on the wrist	Time 5
Readiness to work	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"	Time 1
Readiness to work	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"	Time 2
Work quality	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.	Time 5
Workload	NASA Task Load Index (NASA TLX) is a multi-dimensional scale used to estimate workload from a worker.	Time 5
Visuomotor reaction time	The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).	Time 0
Visuomotor reaction time	The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).	Time 1
Visuomotor reaction time	The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).	Time 5

Collaborators and Investigators

• Sponsor: Opti'Mouv
• Collaborators: Université Grenoble-Alpes
• Investigators: Study Director: Nicolas Vuillerme, Phd, UniversitéGrenobleAlpes

Study record dates

Study Major Dates

• Study Start (Actual): November 1, 2021
• Primary Completion (Actual): May 31, 2022
• Study Completion (Actual): May 31, 2022

Study Registration Dates

• First Submitted: June 13, 2022
• First Submitted That Met QC Criteria: June 16, 2022
• First Posted (Actual): June 21, 2022

Study Record Updates

• Last Update Posted (Actual): June 21, 2022
• Last Update Submitted That Met QC Criteria: June 16, 2022
• Last Verified: June 1, 2022

More Information

Terms related to this study

• Keywords: Pain / injuries / warm-up intervention / vineyard workers / physical activity
• Other Study ID Numbers: IRB00012476-2021-06-12-137

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No