Cervical strength of young adults in sagittal, coronal, and intermediate planes

Objectives. To measure the cervical isometric force generation capacity of men and women reliably while seated in upright neutral posture. Design. The cervical muscle isometric strength was determined in flexion, extension, lateral flexion, anterolateral flexion and posterolateral extensions in an u...

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Bibliographic Details
Published in:Clinical biomechanics (Bristol) 2001-06, Vol.16 (5), p.380-388
Main Authors: Kumar, Shrawan, Narayan, Yogesh, Amell, Tyler
Format: Article
Language:English
Subjects:
Adult
Cervical impairment
Cervical rehabilitation
Cervical strength
Device reliability
Female
Humans
Male
Muscle, Skeletal - physiology
Neck - physiology
Neck pain
Regression Analysis
Strength measurement device
Strength quantification
Task Performance and Analysis
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Summary:Objectives. To measure the cervical isometric force generation capacity of men and women reliably while seated in upright neutral posture. Design. The cervical muscle isometric strength was determined in flexion, extension, lateral flexion, anterolateral flexion and posterolateral extensions in an upright seated neutral posture. For this measurement a device was designed, fabricated and its reliability established. Background. To-date only a few studies on cervical strength data have been published. Of these, validity of some data is suspected due to the use of unstandardized methodology. No studies were identified which reported cervical strengths in lateral and oblique planes. Methods. A testing device consisting of sturdy, stable and strong telescopic adjustable square metal tube was firmly bolted in the floor. Another rotating metal tube was pivoted and adjustably counterweighted and attached to an immovable object with a load cell in its path. Using a horizontal bar upholstered at the terminal end attached to the rotating tube 40 young subjects were tested. They exerted their maximal voluntary isometric contraction in flexion, extension, lateral flexion, anterolateral flexion, and posterolateral extension bilaterally. Results. Cervical muscle strength was maximum in extension and minimal in anterolateral flexion (which was very close to flexion strength). With progressive change in direction towards posterior region the strength progressively increased. There was a significant difference between male and female strengths ( P
ISSN:0268-0033
1879-1271
DOI:10.1016/S0268-0033(01)00023-7