Effect of Induced Trunk Extensors Fatigue on Balance and Lumbar Position Sense in Adolescents (LPS)

this study will be conducted to investigate the effect of trunk extensors induced fatigue on balance and lumber position sense in adolescents

Study Overview

• Status: Not yet recruiting
• Conditions: Adolescent; Healthy
• Intervention / Treatment: Other: Biering-sorenson protocol

Detailed Description

Fatigue can be defined as, decrease in the power generation capacity of the muscles from the beginning of the movement due to internal homeostasis breakdown caused by an increase in energy production demanded by an external stimulus that lead to general decrease in physical performance related to a rise within the real/perceived difficulty of a task or exercise, as well as the inability of the muscles to keep up with the specified level of strength during exercises. Either Adolescents spending long time using smartphone, they are more likely to have their spine in an incorrect posture causing damage to the surrounding skeletal structures as well as to ligaments which affect the proprioception input of the spine. Muscle fatigue is an important condition that impairs sensorimotor integration, proprioception, and thus postural control. Muscle fibers and Golgi tendon organ activity decrease with fatigue, resulting in changes in joint proprioception and afferent output from joint and muscle receptors. Fatigue of postural muscles such as lumbar extensor and abdominal muscles impairs postural control and may form the basis for injuries. Fatigue can also impair the proprioceptive and kinesthetic properties of the joints. this study aims to investigate how the trunk extensor muscles respond to a fatigue inducing exercise, especially concerning balance and trunk lumbar position sense for understanding and preventing musculoskeletal injury and lowering risk in health adolescents in primary care and to contribute to preventive rehabilitation. Sixty-eight normal adolescent boys will participate in this study

• Study Type: Interventional
• Enrollment (Estimated): 68
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Ahmed G Ali, master; Phone Number: 01122068350; Email: Ahmedgamalali1989@gmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Only boys will be included.
• Their age will range from 16 to 18 years old.
• Never trained any specific sport before.
• They have a normal body mass index (BMI) between 16.4 to 24.8 kg/m2 according to
• No history of low back (pain intensity 0-1 cm) according to 10 cm visual analog scale (VAS)
• Physical fitness of all participants will be (minimally active) according to International Physical Activity Questionnaire- Short Form (IPAQ-SF)

Exclusion Criteria:

• Visual or hearing defects.
• Congenital abnormalities.
• Musculoskeletal abnormalities.
• Recent trauma.
• Cardiac and respiratory problems.
• Smoker participant.
• Low back pain.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Biering-sorenson protocol; Biering-Sorensen protocol will be used to induce back muscle fatigue, and a marked decrease in the maximum force in trunk extension

Other: Biering-sorenson protocol; Students shouldn't perform any vigorous activity a day before assessment.; Frist, therapist will request from each participant to watch videos to understand how the test should be applied.; The starting position will be a half prone lying on a plinth with the superior edge of the iliac crest horizontal at the edge of the plinth and the arms crossed over the chest.; The participant should keep the unsupported upper part of the body.; The lower limbs will strategically be stabilized with straps.; The participant will be asked to maintain the upper body in a horizontal position and the timer started.; The test ends if the participant can maintain the previous position for 4 minutes (240 seconds) or can no longer maintain the set position before 4 minutes elapses. The stop time is recorded.; There is considerable range of mean fatigue times reported for the Biering-Sørensen test in the literature ranging from 84s to 180s in healthy males.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
balance	Assessment of balance will be done using the biodex balance system	up to thirty minutes
joint position error	Inclinometer will be used to assess lumbar joint position error	up to thirty minutes

Collaborators and Investigators

• Sponsor: Cairo University

Study record dates

Study Major Dates

• Study Start (Estimated): March 10, 2025
• Primary Completion (Estimated): May 30, 2025
• Study Completion (Estimated): May 30, 2025

Study Registration Dates

• First Submitted: February 25, 2025
• First Submitted That Met QC Criteria: February 25, 2025
• First Posted (Actual): March 25, 2025

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: February 25, 2025
• Last Verified: February 1, 2025

More Information

Terms related to this study

• Keywords: balance; induced trunk extensor fatigue; Lumbar Position Sense
• Additional Relevant MeSH Terms: Fatigue
• Other Study ID Numbers: P.T.REC/012/005624

Drug and device information, study documents

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