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Updated: Mar 18, 2026
Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers
Published on: June 16, 2015
A new device for measuring isometric force of the craniocervical flexor and extensor muscles and its reliability
Fateme Bokaee1, Asghar Rezasoltani2, Farideh Dehghan Manshadi3
1a Students' Research Committee , School of Rehabilitation, Shahid Beheshti University of Medical Sciences , Tehran , Iran.
Objective:
Craniocervical (CC) muscles control posture of the CC area. Muscle imbalance at this area induces musculoskeletal disorders. The purpose of this study was to develop a device for measuring isometric force of CC flexor and extensor muscles and to evaluate its intra-rater reliability.
Method:
Isometric force of CC flexor and extensor muscles was measured in 20 women by one examiner on two days with a custom-made device. The intra-class correlation coefficient (ICC), standard error of measurements (SEM), smallest detectable difference (SDD), and Pearson correlation coefficient were computed.
Results:
The results of this study revealed that this device had excellent reliability (ICC: 0.98, SEM: 2.29 N, SDD: 6.36 N, Pearson correlation coefficient: 0.97 for CC flexor muscles and ICC: 0.97, SEM: 2.13 N, SDD: 5.91 N, Pearson correlation coefficient: 0.94 for CC extensor muscles).
Discussion:
This new device can improve knowledge about the CC muscle and efficacy of treatments in patients with poor posture.
