Ultrasound Assessment of the Transverse Abdominis During Functional Movement

Mangum, L. Colby; Henderson, Kaitlin; Murray, Kathryn; Saliba, Susan A.

doi:10.1002/jum.14466

Cited by 25 publications

(25 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The FAR was originally designed to detect transverse abdominis activation during an abdominal draw-in maneuver and other targeted abdominal exercises. 22,29 This concept has been expanded to other tasks, such as loaded functional positions, and to other muscle groups, including the gluteals. 22,27 Given the unique geometry and broad nature of the gluteal muscles, the interpretation of the muscle activation shifts slightly and is task dependent.…”

Section: Discussionmentioning

confidence: 99%

“…27 The USI positioning and depth of penetration were adjusted until a clear image of the superior and inferior fascial borders of both the GMAX and GMED was visible on the monitor. Participants were instructed to stand with equal weight on both feet and their upper extremities by their sides during 3 quiet-standing ultrasound images for normalization of the test images 22 and for resting kinematic measures. Before YBT administration, participants received oral test instructions to maintain the toe immediately posterior to the start of the tape measure, keep their hands on their hips and full foot contact on the stage, reach as far as possible down the length of the anterior tape measure, lightly tap down, lift the toe, and return to the standing position without losing balance.…”

Section: Methodsmentioning

confidence: 99%

“…14 The average GMAX and GMED muscle thicknesses from the 3 images for each position were calculated and normalized to the quiet-standing measures to determine the FAR (Equation 2). 22 The GMAX-to-GMED ratios were obtained for all positions to determine the preferential-activation ratio (Equation 3). 29 Normalized Reach Distance…”

Section: Data Processingmentioning

confidence: 99%

“…21 The use of USI under static conditions has expanded to quantifying muscles of the lumbopelvic-hip complex, and functional-activation ratios (FARs) have been used to describe the extent of musclethickness changes from resting to exercise conditions. 22 Ultrasound imaging has excellent intrarater reliability for gluteal muscle measures during static and dynamic conditions (intraclass correlation coefficient [3,3] ¼ 0.98). 23 Therefore, assessing gluteal muscle activation using USI would provide valuable information about the hip stabilizers during a dynamic postural task.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Ultrasound Imaging of the Gluteal Muscles During the Y-Balance Test in Individuals With or Without Chronic Ankle Instability

Lempke

Mangum

Hertel

2020

Journal of Athletic Training

Self Cite

View full text Add to dashboard Cite

Context Impairments in dynamic postural control and gluteal muscle activation have been associated with the development of symptoms related to long-term injury, which are characteristic of chronic ankle instability (CAI). Ultrasound imaging (USI) provides a visual means to explore muscle thickness throughout movement; however, USI functional-activation ratios (FARs) of the gluteal muscles during dynamic balance exercises have not been investigated. Objective To determine differences in gluteus maximus and gluteus medius FARs using USI, Y-Balance Test (YBT) performance, and lower extremity kinematics in individuals with or without CAI. Design Cross-sectional study. Setting University laboratory. Patients or Other Participants Twenty adults with CAI (10 men, 10 women; age = 21.70 ± 2.32 years, height = 172.74 ± 11.28 cm, mass = 74.26 ± 15.24 kg) and 20 adults without CAI (10 men, 10 women; age = 21.20 ± 2.79 years, height = 173.18 ± 15.16 cm, mass = 70.89 ± 12.18 kg). Intervention(s) Unilateral static ultrasound images of the gluteal muscles during quiet stance and to the point of maximum YBT reach directions were obtained over 3 trials. Hip, knee, and ankle sagittal-plane kinematics were collected with motion-capture software. Main Outcome Measure(s) Gluteal thickness was normalized to quiet stance to yield FARs for each muscle in each YBT direction. We averaged normalized reach distances and obtained average peak kinematics. Independent t tests, mean differences, and Cohen d effect sizes were calculated to determine group differences for all outcome measures. Results The CAI group had anterior-reach deficits compared with the control group (mean difference = 4.37%, Cohen d = 0.77, P = .02). The CAI group demonstrated greater anterior gluteus maximus FARs than the control group (mean difference = 0.08, Cohen d = 0.57, P = .05). Conclusions The CAI group demonstrated YBT reach deficits and alterations in proximal muscle activation. Increased reliance on the gluteus maximus during dynamic conditions may contribute to distal joint dysfunction in this population.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Data Processingmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Ultrasound Imaging of the Gluteal Muscles During the Y-Balance Test in Individuals With or Without Chronic Ankle Instability

Lempke

Mangum

Hertel

2020

Journal of Athletic Training

Self Cite

View full text Add to dashboard Cite

show abstract

“…Using the ultrasounds it would be in fact possible to capture the thickness changes in all muscles, including deep ones. The thickness of muscles is related to its activation [36,37] providing a direct mean to validate the results. The RMS of the sEMG during contraction was considered for this work in order to give an average estimation of the behaviour of the muscles during the selected tasks.…”

Section: Discussionmentioning

confidence: 99%

Towards a Simplified Estimation of Muscle Activation Pattern from MRI and EMG Using Electrical Network and Graph Theory

Piovanelli

Piovesan

Shirafuji

et al. 2020

Sensors

View full text Add to dashboard Cite

Muscle functional MRI (mfMRI) is an imaging technique that assess muscles’ activity, exploiting a shift in the T2-relaxation time between resting and active state on muscles. It is accompanied by the use of electromyography (EMG) to have a better understanding of the muscle electrophysiology; however, a technique merging MRI and EMG information has not been defined yet. In this paper, we present an anatomical and quantitative evaluation of a method our group recently introduced to quantify its validity in terms of muscle pattern estimation for four subjects during four isometric tasks. Muscle activation pattern are estimated using a resistive network to model the morphology in the MRI. An inverse problem is solved from sEMG data to assess muscle activation. The results have been validated with a comparison with physiological information and with the fitting on the electrodes space. On average, over 90% of the input sEMG information was able to be explained with the estimated muscle patterns. There is a match with anatomical information, even if a strong subjectivity is observed among subjects. With this paper we want to proof the method’s validity showing its potential in diagnostic and rehabilitation fields.

show abstract

Impairments in peroneal muscle size and activation in individuals with patellofemoral pain in weight‐bearing position

Jaffri,

Schwarting,

Baellow

2024

Journal of Foot and Ankle Research

View full text Add to dashboard Cite

BackgroundPatellofemoral pain (PFP) is characterized by chronic pain in the anterior aspect of the knee during loading activities. Many studies investigating muscle morphology changes for individuals with PFP focus on the proximal joints, however, few studies have investigated muscles of the foot and ankle complex. This study aimed to explore the differences in peroneal muscle size and activation between individuals with PFP and healthy controls using ultrasound imaging in weight‐bearing.MethodsA case‐control study in a university lab setting was conducted. Thirty individuals with PFP (age: 20.23 ± 3.30 years, mass: 74.70 ± 27.63 kgs, height: 161.32 ± 11.72 cm) and 30 healthy individuals (age: 20.33 ± 3.37 years, mass: 64.02 ± 11.00 kgs, height: 169.31 ± 9.30 cm) participated. Cross‐sectional area (CSA) images of the peroneal muscles were taken in non‐weight bearing and weight‐bearing positions. The functional activation ratio from lying to single‐leg standing (SLS) was calculated.ResultsThere was a statistically significant (p = 0.041) group (PFP, healthy) by position (non‐weight‐bearing, weight‐bearing) interaction for the peroneal muscle CSA with a Cohen's d effect size of 0.2 in non‐weight‐bearing position and 0.7 in weight‐bearing position. The functional activation ratio for the healthy group was significantly more (p = 0.01) than the PFP group.ConclusionPeroneal muscles were found to be smaller in size in those with PFP compared to the healthy subjects in the weight‐bearing SLS position. This study found that those with PFP have lower activation of peroneal muscles in functional position.

show abstract

Ultrasound Assessment of the Transverse Abdominis During Functional Movement

Cited by 25 publications

References 20 publications

Ultrasound Imaging of the Gluteal Muscles During the Y-Balance Test in Individuals With or Without Chronic Ankle Instability

Ultrasound Imaging of the Gluteal Muscles During the Y-Balance Test in Individuals With or Without Chronic Ankle Instability

Towards a Simplified Estimation of Muscle Activation Pattern from MRI and EMG Using Electrical Network and Graph Theory

Impairments in peroneal muscle size and activation in individuals with patellofemoral pain in weight‐bearing position

Contact Info

Product

Resources

About