Effect of Induced Rotator Cuff Muscles Fatigue on Hand Grip Strength in Adults

NCT07054853 | Completed

• 1 other identifier: P.T.REC/012/005798
• Study Type: observational
• Target: 34
• Locations: 1 country
• Sites: 1

Brief Summary

This observational study aims to investigate the effect of induced rotator cuff muscles fatigue on hand grip strength in adults

Conditions

Healthy Individuals

Keywords

muscle fatigue; neuromuscular performance; isokinetic biodex; hand grip strength; rotator cuff muscles

Outcome Measures

Primary Outcomes (1)

• Hand Grip Strength

  Maximum Voluntary Contraction

  3 months

Study Arms (1)

one group males and females

Device: Induced rotator cuff fatigue by isokinetic biodex

Interventions

Induced rotator cuff fatigue by isokinetic biodex DEVICE

Each subject will undergo two separate fatigue protocols from distinct shoulder abduction angles (30° and 90°), referred to as Protocol A and Protocol B, respectively. Fatigue will be induced using the Biodex System 4 Pro Isokinetic .Participants will be seated with the tested arm positioned at the designated shoulder abduction angle and elbow flexed at 90°. The arm will be secured using a shoulder adapter to ensure standardized positioning. Hand Grip strength will be assessed using a Jamar Plus+ Digital. Participants will perform three maximal grip trials, each lasting 3 seconds, with verbal encouragement provided. The average of the three trials will be used as the maximum voluntary contraction

one group males and females

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

healthy Individuals

You may qualify if:

• Both male and females (18-30) years
• No complaints of existing shoulder pathology/pain in at least one shoulder within the last 6 months, no back pain, no history of shoulder/thoracic spine surgery, and no spinal deformities
• Body mass index between (18.5:24.99) Kg/ m2

You may not qualify if:

• Shoulder complaints in the past 6 months such as shoulder dislocation rotator cuff tear, shoulder surgery, and shoulder rehabilitation or other upper limb forms of disability
• Subjects who had wrist pain, a joint injury, undergone surgery, or neuromuscular dysfunction were excluded from the study
• Individuals who suffered an injury or underwent a surgical procedure in the last six months that could affect hand functions or senses

Sponsors & Collaborators

• Cairo University: collaborator
• Misr University for Science and Technology: collaborator
• Noura Karam Abdou Mohammed Ismaiel: lead

Study Sites (1)

Misr University for Science and Technology

Giza, Egypt

Location

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Teaching Assistant

Study Record Dates

• First Submitted: June 27, 2025
• First Posted: July 8, 2025
• Study Start: September 25, 2025
• Primary Completion: October 30, 2025
• Study Completion: December 1, 2025
• Last Updated: March 30, 2026

Record last verified: 2026-03

Data Sharing

• IPD Sharing: Will not share

Locations

EG (1)