Comparison of the Sonographic Features of the Abdominal Wall Muscles and Connective Tissues in Individuals With and Without Lumbopelvic Pain

Whittaker, Jackie L.; Warner, Martin; Stokes, María

doi:10.2519/jospt.2013.4450

Cited by 88 publications

(146 citation statements)

References 57 publications

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“…As individuals with LPP have been shown to have thicker perimuscular connective tissue, 56 measurements of muscle thickness were calculated as the perpendicular distance between the muscle's superficial and deep perimuscular connective tissue boundaries, 47,55 in the middle of the image (FIGURE 2).…”

Section: Data Reductionmentioning

confidence: 99%

“…), who has previously demonstrated the ability to take reliable measurements of abdominal muscle thickness. 52,53,56 A USI system (MyLab 25; Esaote North America Inc, Indianapolis, IN) with a 5.0-MHz curvilinear transducer (40-mm footprint; lateral and axial resolution, 1.0 and 0.93 mm, respectively) was used to generate B-mode ultrasound clips from 2 abdominal imaging sites during the 2 tasks. These included the midpoint of the lateral abdominal wall halfway between the iliac crest and the inferior border of the rib cage, on the midaxillary line, and the midpoint of the RA muscle at the level of the umbilicus (FIGURE 1).…”

Section: Data Acquisitionmentioning

confidence: 99%

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Association Between Changes in Electromyographic Signal Amplitude and Abdominal Muscle Thickness in Individuals With and Without Lumbopelvic Pain

Whittaker¹,

McLean²,

Hodder³

et al. 2013

J Orthop Sports Phys Ther

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The muscles of the abdominal wall play a role in controlling motion of the spine, 1,20,21,24 and there is evidence of dysfunction of this musculature in persons with lumbopelvic pain (LPP). Proposed dysfunctions range from delayed onset 23 and seemingly diminished responses (smaller increase in thickness) of the transversus abdominis (TrA) 46,48 to increased electromyographic (EMG) signal amplitude and greater responses (larger increase in thickness) of the rectus abdominis (RA) and external and internal oblique (EO and IO) muscles.2,39,49 As these abnormalities have been linked to pain and dysfunction, there is interest in developing methods to accurately assess function of the abdominal musculature.Ultrasound imaging (USI) is a noninvasive and valid method to quantify abdominal muscle size 19 and is currently used in rehabilitation, in part, under the assumption that changes in muscle thickness reflect the extent of muscle contraction.42,46,50 USI has also been used for screening purposes 18 and as a source of real-time biofeedback, as it is presumed to be reflective of muscle activity during exercises commonly employed in rehabilitation programs. 15,38 Although some authors have stated that changes in muscle thickness measured with USI can be used as surrogate measures of muscle activity 11,34,42 and activation, 31,40,41,44 evidence T T STUDY DESIGN: Validation study. T T OBJECTIVES:To investigate the association between changes in electromyographic (EMG) signal amplitude and sonographic measures of muscle thickness of 4 abdominal muscles, during 2 clinical tests, in adults with and without lumbopelvic pain. T T BACKGROUND:There is a trend in rehabilitation to use ultrasound imaging (USI) to determine the extent of abdominal muscle contraction. However, the literature investigating the relationship between abdominal muscle thickness change and level of activation is inconclusive and has not included clinically relevant tasks. T T METHODS:Simultaneous recording from finewire EMG and USI was performed for 4 abdominal muscles, in 7 adults with lumbopelvic pain (mean  SD age, 29.7  12.0 years) and 7 adults without lumbopelvic pain (32.0  10.6 years), during an active straight leg raise (ASLR) test and an abdominal drawing-in maneuver (ADIM). Cross-correlation functions and linear regression analyses were used to describe the relationship between the 2 measures. Analyses of variance were used to compare individuals with and without lumbopelvic pain, with an alpha set at .05. T T RESULTS:Across all muscles, peak crosscorrelation values were low (ASLR, r = 0.28  0.09; ADIM, r = 0.35  0.11), and there was large variability in associated time lags (ASLR, τ = 0.69  2.56 seconds; ADIM, τ = 0.53  3.75 seconds). Regression analyses did not detect a systematic pattern of association between EMG signal amplitude and USI measurements, and analyses of variance revealed no differences between cohorts.

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Section: Data Reductionmentioning

confidence: 99%

Section: Data Acquisitionmentioning

confidence: 99%

Association Between Changes in Electromyographic Signal Amplitude and Abdominal Muscle Thickness in Individuals With and Without Lumbopelvic Pain

Whittaker¹,

McLean²,

Hodder³

et al. 2013

J Orthop Sports Phys Ther

Self Cite

View full text Add to dashboard Cite

show abstract

“…2 Compromising the mechanical function of the trunk, a DRA has been associated with decreased muscle strength and endurance, 11,21 reduced capacity of abdominal musculature to stabilize the pelvis, 2,14,32 related pelvic floor dysfunction, 33,34 posture abnormalities, 6 and lumbopelvic pain. 29,33,37,38,42 Development of a DRA may be due to failure of the abdominal wall to withstand extreme overloading 28 and may stem from different causes in males and females. In males, factors that appear to be related to DRA include increasing age, 12,23,31 obesity, 23 greater abdominal circumference, 12 performance of full-excursion sit-ups and weight training, 23 hernia, 35 abdominal aortic aneurysm, 24,26 and lipodystrophy in HIV-infected men.…”

mentioning

confidence: 99%

Concurrent Validity of Calipers and Ultrasound Imaging to Measure Interrecti Distance

Chiarello¹,

McAuley²

2013

J Orthop Sports Phys Ther

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“…The use of this synchronised recording method may be extended to diagnosis and to evaluation of therapies (7,(20)(21)(22)(23).…”

Section: Discussionmentioning

confidence: 99%

“…Some authors have focused their studies on the trunk, whilst others have specified abdominal musculature (5,7,8) or back musculature (9-13). Other authors have focused on the role of ADL in the upper limb (5,14,15).…”

Section: Disscusionmentioning

confidence: 99%

Monitoring Changes of the Tibialis Anterior during Dorsiflexion with Electromyography, Sonomyography, Dynamometry and Kinematic Signals

et al. 2014

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Abstract-Dorsiflexion (DF) of the foot plays an essential role in both controlling balance and human gait. Electromyography (EMG) and Sonomyography (SMG) can provide information on several aspects of muscle function. The aim was to describe a new method for real-time monitoring of muscular activity, as measured using EMG, muscular architecture, as measured using SMG, force, as measured using dynamometry, and kinematic parameters, as measured using inertial sensors (IS) during isometric and isotonic contractions of the foot DF. The present methodology may be clinically relevant because it involves a reproducible procedure which allows the function and structure of the foot DF to be monitored.

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Comparison of the Sonographic Features of the Abdominal Wall Muscles and Connective Tissues in Individuals With and Without Lumbopelvic Pain

Cited by 88 publications

References 57 publications

Association Between Changes in Electromyographic Signal Amplitude and Abdominal Muscle Thickness in Individuals With and Without Lumbopelvic Pain

Association Between Changes in Electromyographic Signal Amplitude and Abdominal Muscle Thickness in Individuals With and Without Lumbopelvic Pain

Concurrent Validity of Calipers and Ultrasound Imaging to Measure Interrecti Distance

Monitoring Changes of the Tibialis Anterior during Dorsiflexion with Electromyography, Sonomyography, Dynamometry and Kinematic Signals

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