Anthropometric Factors Influencing Lateral Sliding of Muscle-Fascia Junction and Thickness of Transversus Abdominis and Internal Oblique Muscles Measured with Ultrasound Imaging
Resource
物理治療 v.35 n.3 pp.201-209
Journal
物理治療,v.35
Journal Issue
n.3
Pages
201-209
Date Issued
2010
Date
2010
Author(s)
JHU, JHONG-LIN
WANG, CHUNG-LI
SHAU, YIO-WHA
WANG, SHWU-FEN
Abstract
Study Design: Cross-sectional. Objective: The purpose of this study was ( 1) to investigate whether the measurement of thickness and lateral sliding of the muscle-fascia junction of trans-versus abdominis (TrA) by ultrasound imaging was symmetrical: (2) to explore the relationship between these parameters and gender, age, BMI and weight: (3) to examine the influence of weight on the observed relationship between gender and ultrasound measurements. Summary of Background: Ultrasound imaging was employed to provide information about the shape. performance of contraction, change of muscle thickness between resting and contraction, and lateral sliding of muscle-fascia junction of TrA. However, few studies investigated the factors influencing the measurements of changes in thickness and sliding during contraction. Methods: Thirty-seven subjects ( 20-35 years old ) without LBP were recruited. The ultrasound imaging equipment used in this study was HDI 5000 (Philips/ATL. Bothell, WA, USA). The outcome measures included the lateral sliding of the muscle-fascia junction (Δx), resting thickness (Thr) maximal contracting thickness (Thm ), and contraction ratio (Thm/Thr). The participants performed abdominal draw-in maneuver in hook-lying position. Real-time ultrasonographic image was taken for off-line measurement. The paired t-test was employed to examine the symmetry of muscle thickness and lateral sliding of the muscle -fascia junction of TrA measured by ultrasonography. Pearson product - moment correlation coefficient was utilized to measure the correlation between ultrasound measurements of abdominal muscle, and gender, age, weight and BMI Partial correlation vas employed to assess the relationship between gender, and muscle thickness and lateral sliding of muscle-fascia junction of TrA with the effect of weight eliminated. Results: There was no significant difference in measurement of thickness and lateral sliding of muscle-fascia junction of TrA on both sides. There was significant positive correlation between gender and Δx (r=0.34 ), Thr of TrA (r= 0.57 ). Thm of TrA (r=0.43), Thr of obliquus internus (OI) ( r=0.69), and Thm of OI (r=0.60). However, there was no significant relationship between gender and Δx and Thr, Thm of TrA when partial correlation coefficients were calculated between gender, and thickness and lateral sliding of muscle-fascia junction of TrA controlling for weight. There was no significant correlation between age, and thickness and lateral sliding of muscle-fascia junction of TrA. There was significant positive correlation between weight, and Δx (r=0.37), Thr of TrA (r=0.62), Thm of TrA (r =0.51 ), Thr of OI (r=0.54), and Thm of OI (r=0.54) Conclusions: Ultrasonic measurement of thickness and lateral sliding of the muscle-fascia junction of TrA were symmetrical on both side. The weight and gender should be controlled when comparing the measurement of abdominal muscles between groups by ultrasound imaging in future study .
Subjects
腹橫肌
超音波
肌肉厚度
Transversus abdominis
Ultrasonography
Muscle thickness