Changes in muscle thickness after exercise and biofeedback in people with low back pain.
J Sport Rehabil
; 23(4): 307-18, 2014 Nov.
Article
em En
| MEDLINE
| ID: mdl-24810417
ABSTRACT
CONTEXT Individuals with low back pain (LBP) have reduced function of the transversus abdominis (TrA) and lumbar multifidus (LM) muscles. Biofeedback during exercise may increase the ability to contract the TrA and LM muscles compared with exercise alone. OBJECTIVE:
To compare TrA preferential activation ratio (PAR) and the percent change in LM-muscle thickness in patients with LBP history before and after exercise with or without biofeedback.DESIGN:
Controlled laboratory study.SETTING:
University research laboratory. PATIENTS 20 LBP individuals, 10 exercise alone and 10 exercise with biofeedback.INTERVENTIONS:
Patients were allotted to tabletop exercises in isolation or tabletop exercises with visual, auditory, and tactile biofeedback. MAIN OUTCOMEMEASURES:
TrA PAR and percent change in LM-muscle thickness.RESULTS:
There were no differences between groups at baseline (all P > .05). Nonparametric statistics showed decreased resting muscle thickness for total lateral abdominal-wall muscles (P = .007) but not TrA (P = .410) or LM (P = .173). Percent TrA thickness increased from table to standing positions before (P = .006) and after exercise (P = .009). TrA PAR increased after exercise (pre 0.01 ± 0.02, post 0.03 ± 0.04, P = .033) for all patients and for exercise with biofeedback (pre 0.02 ± 0.01, post 0.03 ± 0.01, P = .037) but not for exercise alone (pre 0.01 ± 0.02, post 0.02 ± 0.05, P = .241). No group differences were observed for TrA PAR before (exercise 0.01 ± 0.02, exercise with biofeedback 0.02 ± 0.01, P = .290) or after exercise (exercise 0.02 ± 0.05, exercise with biofeedback 0.03 ± 0.01, P = .174). There were no group differences in LM percent change before exercise (P = .999) or after exercise (P = .597). In addition, no changes were observed in LM percent change as a result of exercise among all participants (P = .391) or for each group (exercise P = .508, exercise with biofeedback P = .575).CONCLUSION:
TrA PAR increased after a single session of exercises, whereas no thickness changes occurred in LM.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Biorretroalimentação Psicológica
/
Exercício Físico
/
Dor Lombar
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Músculos Abdominais
Limite:
Adult
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Female
/
Humans
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Male
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article