Estudio transversal de fiabilidad y concordancia de una nuevo dispositivo para la evañuación de torsión y tolerancia a la fatiga en flexo extensores cervicales de voluntarios sedentarios asintomáticos
Date
2015
Type:
Article
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ORCID:
Journal Title
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Volume Title
Publisher
Elsevier
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Abstract
Objective: To determine the reliability and agreement of a method to evaluate maximum voluntary
isometric torque (MVIT) and muscle fatigue local tolerance (MFLT) measurement in the cervical
flexor-extensor muscles of sedentary life style asymptomatic volunteers.
Material and method: For this observational cross-sectional study, 42 subjects (15 women and 27
men), who were asymptomatic, with sedentary life style, and with no background of cervical
pathology were assessed with the cervical muscle testing dynamometer system. The MVIT (Newtonmeters;
Nm) was recorded with three measurements for each muscle group (n = 42). Twenty-four
hours later, MFLT (seconds) was measured twice at 60 ± 2.5% of MVIT with two measurements for
the cervical flexor and extensor (n = 40). After one week, a MVIT and MFLT retest was performed
(n = 13).
Results: The general measurement of reliability and agreement for the MVIT show a intra-class
correlation coefficient > 0.89, coefficient of variation <11% and standard error of measurement
< 1Nm in both muscle groups. The measurement of MFLT flexor provided intra-class correlation
coefficient > 0.80, coefficient of variation = 20% and standard error of measurement <10 seconds;
while the results for the extensors were intra-class correlation coefficient < 0.50, coefficient of
variation = 30% and standard error of measurement > 20 sec.
Conclusions: In both cervical muscle groups, the proposed method and device are reliable and
concordant for MVIT evaluation. On its part, gender is a significant scatter factor in MFLT testing.
Description
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Citation
Fisioterapia, Volume 37, Issue 4, July–August 2015, Pages 155-164
Keywords
Neck muscles, Equipment and supplies, Reproducibility of results, Muscle strength, Muscle fatigue