Between-days reliability of subjective and objective assessments of back extensor muscle fatigue in subjects without lower-back pain.
J Electromyogr Kinesiol
; 10(3): 151-8, 2000 Jun.
Article
em En
| MEDLINE
| ID: mdl-10818336
ABSTRACT
BACKGROUND:
It is important to evaluate the reliability of common used methods of examining muscle fatigue from the lower back since the methods are used in patient evaluation.METHODS:
To establish between-days reliability, ten subjects without lower-back pain performed a Sorensen test, a prone test for back extensor muscles against gravity, on three separate days. EMG was recorded from the L1 and L5 of the back extensor muscles. Fatigue was subjectively rated using a Borg CR-10 scale. Intraclass correlation coefficient, standard error of measurement and coefficient of variation were calculated from a one-way ANOVA. Percent agreement was also calculated.RESULTS:
The study revealed good reliability for the slope for the total time (ICC 0.65-0.90), the initial and end median frequency (ICC 0.75-0.89), median frequencies at Borg ratings of three (ICC 0.63-0.88), five (ICC 0.62-0.84) and seven (ICC 0.67-0. 87), endurance time (ICC 0.89). The Borg ratings of the first minute agreed better than those of the second and the third. The Borg ratings at the second and the third test agreed to 40-80%, indicating a need for a practice session.CONCLUSION:
The protocol used for assessing fatigue in the back extensor muscles proved to be reliable and is recommended for further use.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fadiga Muscular
/
Eletromiografia
/
Região Lombossacral
Tipo de estudo:
Guideline
Limite:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article