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Biomedical subjects

Kari Bø

Publications and source records attributed to Kari Bø.

22 records · Page 2Linked to original sources
PubMed2003

The effect of comprehensive group training on cross-sectional area, density, and strength of paraspinal muscles in patients sick-listed for subacute low back pain.

The effect of exercise on back muscle cross-sectional area (CSA), density, and strength was evaluated in patients sick-listed for subacute low back pain. Twenty-four patients were randomized into an exercise (n = 11) or a control (n = 13) group. Patients in the exercise group followed a biweekly exercise protocol for 15 weeks. Control patients received usual care. Muscle CSA and density were measured by computed tomography before and after intervention. Isokinetic test of back extensors was conducted simultaneously. Results showed a tendency to increased muscle CSA and density in patients in the exercise group, a significant decrease in muscle CSA at L4-L5 in control group patients, and a significant difference in change between groups in muscle CSA at L4-L5. Back extension strength increased in patients in the exercise group, but the improvement was not significant compared with control group patients. In conclusion, there was a tendency for reversal of muscle atrophy after exercise.

Adult↗
PubMed2002

Intra-tester reproducibility of pressure biofeedback in measurement of transversus abdominis function.

BACKGROUND AND PURPOSE: Strength, co-ordination and timing of transversus abdominis muscle contraction may be important in stabilizing the low back, and contraction of this particular abdominal muscle may be one factor capable of preventing and reducing low back pain in sport and in activities of daily living. The function and strength of the transversus abdominis muscle is difficult to measure. The pressure biofeedback unit (PBU) is a device designed to teach and measure transversus abdominis muscle function. The purpose of the present study was to evaluate intra-tester reproducibility of the PBU. METHOD: The study used a test-retest design. Fifteen healthy subjects (mean age 22.2 years, range 19-28 years) with no history of low back pain participated in the study. After two sessions of practising transversus abdominis muscle contraction, its function was measured in prone position with the PBU device placed over the transversus abdominis muscle. Subjects were instructed to draw in the abdominal wall (for example, lifting it away from the device) after a standardized procedure. Two tests were conducted on two different days, with a seven-day interval in between. RESULTS: Coefficient of variance (CV) was 21.0% and the standard deviation (SD) of delta was 1.59. CONCLUSION: The use of the PBU should be improved for scientific purposes. However, the device may have a role in providing biofeedback to assist in the instruction of correct transversus abdominis muscle contraction.

Abdominal Muscles↗
PubMed2002

Effect of adding biofeedback to pelvic floor muscle training to treat urodynamic stress incontinence.

OBJECTIVE: To compare the effect of individual pelvic floor muscle training with and without biofeedback in women with urodynamic stress incontinence. METHODS: The study was a single, blind, randomized trial. All women completed 6 months of pelvic floor muscle training comprising three sets of ten contractions three times per day, supervised by a physical therapist. One group trained with a biofeedback apparatus at home, the other without biofeedback. The primary outcome measures were pad test with standardized bladder volume and self-report of severity. RESULTS: A total of 103 women were randomized, and data from 94 women were analyzed. Mean age (range) was 46.6 (30-70) years, and mean (range) duration of symptoms was 9.7 (1-25) years. Seventy women had urodynamic stress incontinence alone, and 24 women reported additional urge symptoms. Women training with and without biofeedback showed a statistically significant reduction in leakage on pad test (P <.01) after 6 months of pelvic floor muscle training. Objective cure (2 g or less of leakage) in the total group was 58% in women training with and 46% in women training without biofeedback, and in the subgroup of women with urodynamic stress incontinence alone, 69% in women training with and 50% in women training without biofeedback. There was no statistically significant difference between the groups posttreatment in any outcome measure. CONCLUSION: Cure rate was high, and the reduction in urinary leakage after treatment was statistically significant in both groups. However, there was no statistically significant difference in the effect of individual pelvic floor muscle training with and without biofeedback.

Biofeedback, Psychology↗