Influence of feedback schedule in motor performance and learning of a lumbar multifidus muscle task using rehabilitative ultrasound imaging: a randomized clinical trial.
Phys Ther
; 88(2): 261-9, 2008 Feb.
Article
em En
| MEDLINE
| ID: mdl-18042655
ABSTRACT
BACKGROUND AND PURPOSE:
Low back pain (LBP) may be associated with inadequate multifidus muscle function. Varying the frequency and timing of feedback may enhance acquisition and retention of multifidus muscle recruitment during exercise.SUBJECTS:
Subjects without LBP (n=30) were randomly assigned to a constant (CON) or variable (VAR) feedback group. Twenty-eight subjects (mean age=28 years, SD=8.0; mean body mass index=24 kg/m(2), SD=0.70) completed training, and 23 completed retention testing.METHODS:
Eight training sessions over 4 weeks included multifidus muscle exercise with rehabilitative ultrasound imaging (RUSI) feedback. Retention was assessed at 1 week and >or=1 month.RESULTS:
At the start, both groups had similar performances of multifidus muscle recruitment (Fisher exact test, P=.26). Early in training, the CON group had good success (mean=80%) that was maintained at session 8 (mean=84%), with no difference between sessions 1 and 8 (Wilcoxon signed rank test, P=.19, 95% confidence interval [CI]=-9%, 42%). The VAR group gradually increased success (Wilcoxon signed rank test, P=.002, 95% CI=17%, 59%) between sessions 1 and 8. Both groups sustained their session 8 success when tested for short-term retention at 1 week (CON group Wilcoxon signed rank test, P=.79; VAR group Wilcoxon signed rank test, P=.36). At the long-term retention test, the VAR group outperformed the CON group (Wilcoxon score test, P=.04), indicating superior motor learning. DISCUSSION ANDCONCLUSION:
Variable feedback provided by RUSI resulted in greater success in lumbar multifidus muscle recruitment up to 3 to 4 months after training.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dor Lombar
/
Músculo Esquelético
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Região Lombossacral
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
Limite:
Adolescent
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Adult
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Female
/
Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article