Chronic Adaptations to Spinal Flexion Exposure

NCT ID: NCT05752006

Last Updated: 2024-03-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

30 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-08-05

Study Completion Date

2023-11-15

Brief Summary

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An experimental study, which will aim to compare changes of trunk mechanical properties and neuromuscular control following spinal flexion exposure in crane operators and control subjects.

Detailed Description

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Our experimental study will include 40 participants, more specifically 15 crane operators and 15 control subjects. All participants will complete a 60-min protocol of intermittent trunk flexion. Measurements of trunk mechanical properties and neuromuscular control will be performed prior to and following the 60-min protocol.

Conditions

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Occupational Exposure

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Cross-sectional study
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Crane operators

Individuals employed as crane operators in Port of Koper.

Group Type EXPERIMENTAL

Repeated trunk flexion

Intervention Type OTHER

A 60-min intermittent trunk flexion protocol. Participants will sit on a standard height sit, with their knees bent at approximately 90° with their hands crossed on their chest. They will perform 40 sets of 60 s of maintaining a flexed position, interspersed with 30 s of rest. Participants will achieve the flexed position by tilting the pelvis posteriorly and leaning forward. During rest, participants will sit up straight without leaning on the support.

Control subjects

Individuals who spend more than half of their occupation time standing.

Group Type ACTIVE_COMPARATOR

Repeated trunk flexion

Intervention Type OTHER

A 60-min intermittent trunk flexion protocol. Participants will sit on a standard height sit, with their knees bent at approximately 90° with their hands crossed on their chest. They will perform 40 sets of 60 s of maintaining a flexed position, interspersed with 30 s of rest. Participants will achieve the flexed position by tilting the pelvis posteriorly and leaning forward. During rest, participants will sit up straight without leaning on the support.

Interventions

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Repeated trunk flexion

A 60-min intermittent trunk flexion protocol. Participants will sit on a standard height sit, with their knees bent at approximately 90° with their hands crossed on their chest. They will perform 40 sets of 60 s of maintaining a flexed position, interspersed with 30 s of rest. Participants will achieve the flexed position by tilting the pelvis posteriorly and leaning forward. During rest, participants will sit up straight without leaning on the support.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Crane operators: employed as crane operators for more than 3 years
* Occupational workers with a predominantly non static job (e.g. combination of sitting and standing)

Exclusion Criteria

* History of chronic low back pain
* Episode of acute low back pain
* Hip injury in the past six months
* Previous spine, pelvis or hip surgery
* Hypermobility, diagnosed with the Beighton score
* High intensity resistance training (\> 75 % of 1 repetition maximum) more than two times a week
* Control group: sporting or recreational activities, that include repetitive spinal flexion or maintenance of a flexed posture (for example cycling or rowing).
Minimum Eligible Age

30 Years

Maximum Eligible Age

55 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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University of Primorska

OTHER

Sponsor Role lead

Responsible Party

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Matej Voglar

Assistant professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Matej Voglar, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Primorska, Faculty of Health Sciences

Locations

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University of Primorska, Faculty of Health Sciences

Izola, Primorska, Slovenia

Site Status

Countries

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Slovenia

Other Identifiers

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SWE_Flexion2_Crane

Identifier Type: -

Identifier Source: org_study_id

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