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 Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
120
Dynamic + stretching exercises
Dynamic exercises
Stretching exercises
OptiMouv
Pauillac, Gironde, France
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".
Time frame: 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".
Time frame: 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".
Time frame: 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".
Time frame: 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".
Time frame: 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".
Time frame: 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".
Time frame: Pain intensity will be rated after three hour of work (Time 5)
Work performance
number of grapevine pruned
Time frame: After one hour of work (Time 3)
Work performance
number of grapevine pruned
Time frame: After two hours of work (Time 4)
Work performance
number of grapevine pruned
Time frame: After three hours of work (Time 5)
Handgrip Strength
Handgrip Strength
Time frame: Before the warm-up intervention (Time 0)
Handgrip Strength
Handgrip Strength
Time frame: After the warm-up intervention (Time 1)
Handgrip Strength
Handgrip Strength
Time frame: After three hour of work (Time 5)
Flexibility
Flexibility of the trunk and the hamstrings - Finger to floor test
Time frame: Before the warm-up intervention (Time 0)
Flexibility
Flexibility of the trunk and the hamstrings - Finger to floor test
Time frame: After the warm-up intervention (Time 1)
Flexibility
Flexibility of the trunk and the hamstrings - Finger to floor test
Time frame: After three hour of work (Time 5)
Flexibility
Flexibility of the shoulders - Back scratch test
Time frame: Before the warm-up intervention (Time 0)
Flexibility
Flexibility of the shoulders - Back scratch test
Time frame: After the warm-up intervention (Time 1)
Flexibility
Flexibility of the shoulders - Back scratch test
Time frame: After three hour of work (Time 5)
Heart rate
Heart rate with a heart rate monitor placed on the wrist
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: Time 0
Heart rate
Heart rate with a heart rate monitor placed on the wrist
Time frame: Time 1
Heart rate
Heart rate with a heart rate monitor placed on the wrist
Time frame: Time 2
Heart rate
Heart rate with a heart rate monitor placed on the wrist
Time frame: Time 3
Heart rate
Heart rate with a heart rate monitor placed on the wrist
Time frame: Time 4
Heart rate
Heart rate with a heart rate monitor placed on the wrist
Time frame: 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 frame: 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 frame: 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 frame: Time 5
Workload
NASA Task Load Index (NASA TLX) is a multi-dimensional scale used to estimate workload from a worker.
Time frame: Time 5
Visuomotor reaction time
The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).
Time frame: Time 0
Visuomotor reaction time
The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).
Time frame: Time 1
Visuomotor reaction time
The FITLIGHT Trainer (FITLIGHT Sports Corp., Ontario, Canada) will be used to measure the visuomotor reaction time (VMRT).
Time frame: Time 5