Effects of a 60-min Repeated Trunk Flexion Protocol on Trunk Neuromuscular Properties.

Occupational Exposure Clinical Trial

Official title:

Effects of Repeated Trunk Flexion on Trunk Neuromuscular Properties.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05511896
• Other study ID #: SWE_Flexion1
• Status: Completed
• Phase: N/A
• Start date: September 1, 2022
• Est. completion date: October 15, 2022

Study information

• Verified date: October 2022
• Source: University of Primorska
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

An interventional study on the effects of repeated trunk flexion exposure on trunk neuromuscular properties.

Description:

An interventional study will include 16 healthy young adults. All participants will complete a 60-min protocol of intermittent trunk flexion. Measurements of trunk neuromuscular properties will be performed prior to and following the 60-min protocol.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 16
• Est. completion date: October 15, 2022
• Est. primary completion date: October 1, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 40 Years

Eligibility

Inclusion Criteria:

• Physically active at least 3 hours a week

Exclusion Criteria:

• Low back pain in the past 6 months
• History of chronic low back pain
• History of spinal or pelvic operation
• Hypermobility, more than 4 points on Beighton scale
• Cardiovascular or systemic diseases
• Pregnancy

Related Conditions & MeSH terms

• Occupational Exposure

Intervention

Other:
• 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.

Locations

Country	Name	City	State
Slovenia	University of Primorska, Faculty of Health Sciences	Izola	Primorska

Sponsors (1)

Lead Sponsor	Collaborator
University of Primorska

Country where clinical trial is conducted

Slovenia, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in muscle stiffness	Muscle stiffness will be measured in prone lying using ultrasound-based shear wave elastography. Erector spinae and multifidus muscle stiffness will be expressed as the shear modulus value in kilopasquals.	90 minutes
Secondary	Change in range of motion	Trunk flexion range of motion will be evaluated using inertial measuring units during bending in standing position.	90 minutes
Secondary	Change in length of the spine	The length of spine will be measured on a custom-developed stadiometer, with the participants in a seated position.	90 minutes
Secondary	Change in muscle activity	Muscle activity will be measured using electromyography during standing.	90 minutes