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Completed

NCT Number: NCT05511896

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

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

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Key information

Conditions

Occupational Exposure Airway Obstruction Respiration Disorders Respiratory Insufficiency Respiratory Tract Diseases

Age range

18 year–40 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Primorska, Faculty of Health Sciences

Izola, Primorska, 6310, Slovenia

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Repeated trunk flexion

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.

Primary outcomes

  1. Change in muscle stiffness

    Time frame: 90 minutes

    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.

Secondary outcomes

  1. Change in range of motion

    Time frame: 90 minutes

    Trunk flexion range of motion will be evaluated using inertial measuring units during bending in standing position.

  2. Change in length of the spine

    Time frame: 90 minutes

    The length of spine will be measured on a custom-developed stadiometer, with the participants in a seated position.

  3. Change in muscle activity

    Time frame: 90 minutes

    Muscle activity will be measured using electromyography during standing.

Sponsors and collaborators

Lead sponsor

University of Primorska

Other

Registry information

Official study title

Effects of Repeated Trunk Flexion on Trunk Neuromuscular Properties.

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Aug 23, 2022
Registry last updated
Oct 19, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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