Document Detail

Reproducibility of ultrasound measurement of transversus abdominis during loaded, functional tasks in asymptomatic young adults.
MedLine Citation:
PMID:  22732152     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: To examine the reproducibility of repeat tests of ultrasound imaging (USI) measurement of transversus abdominis (TrA) activation in a single group of asymptomatic adults performing reaching and lifting tasks before and after abdominal drawing-in technique (ADIM) training in the supine position with TrA USI biofeedback.
DESIGN: Clinical measurement, longitudinal reliability study.
SETTING: University laboratory.
PARTICIPANTS: Five male (age, 20.6 ± 4.8 years; body mass index, 25.8 ± 4.5) and 8 female (age, 18.3 ± 0.5 years; body mass index, 24.4 ± 3.3) healthy college students.
INTERVENTIONS: Not applicable.
MAIN OUTCOME MEASURES: Reliability and precision of minimum, maximum, and percentage of change in TrA thickness measures were examined on recorded cine loop images obtained via USI (B-mode, 7.5 MHz) for 13 asymptomatic adults. Thickness changes of the TrA muscle were measured at rest and during contraction while performing 5 functional, loaded tasks on 3 repeat tests during 3 testing sessions (ie, before ADIM training and 5 minutes and 5 months after ADIM training). The percent thickness change of TrA was calculated as [(thickness(max) - thickness(min))/thickness(min)] × 100. Reproducibility was examined by using intraclass correlation coefficients (ICC(2,k)), standard error of measurement (error variance formula), and repeated-measures analysis of variance.
RESULTS: Ranges of ICC and standard error of measurement values for 3 repeat tests per testing session were high and precise for single measures of minimum thickness per task (session 1: 0.68-0.93, 0.24-0.37 mm; session 2: 0.62-0.87, 0.28-0.44 mm; session 3: 0.79-0.84, 0.43-0.56 mm) and for composite measures of maximum thickness (session 1: 0.93, 0.25 mm; session 2: 0.94, 0.37 mm; session 3: 0.95, 0.64 mm) and percent change in thickness (session 1: 0.81, 12%; session 2: 0.94, 14%; session 3: 0.94, 15%). Repeated-measures analysis of variance indicated significant effects for subjects, but not repeat tests.
CONCLUSIONS: This study produced acceptable reproducibility of USI measures of TrA during loaded functional activities.
Sue L McPherson; Todd Watson
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  PM & R : the journal of injury, function, and rehabilitation     Volume:  4     ISSN:  1934-1563     ISO Abbreviation:  PM R     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-06-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101491319     Medline TA:  PM R     Country:  United States    
Other Details:
Languages:  eng     Pagination:  402-12     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 American Academy of Physical Medicine and Rehabilitation. Published by Elsevier Inc. All rights reserved.
Department of Physical Therapy, Western Carolina University, Cullowhee, NC(⁎).
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