Differentiation of gluteus medius and minimus activity in weight bearing and non-weight bearing exercises by M-mode ultrasound imaging

Dieterich, Anja; Petzke, Frank; Pickard, Christine M.; Davey, Paul; Falla, Deborah

doi:10.1016/j.math.2015.01.006

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…For the GMax and GMed thickness images, the ultrasound probe was placed midway between the iliac crest and greater trochanter where both muscles could be visualized using a technique similar to one previously described ( Figure 1). 22,23 Resting measures were taken with the participant side lying and the legs fully relaxed. Nonresistance hip-abduction images were taken when the participant abducted the hip so that the foot was 25.4 cm above the tabletop.…”

Section: Methodsmentioning

confidence: 99%

Ultrasonography of Gluteal and Fibularis Muscles During Exercises in Individuals With a History of Lateral Ankle Sprain

Koldenhoven

Fraser

Saliba

et al. 2019

Journal of Athletic Training

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Context Individuals with a history of lateral ankle sprains (LASs) have ankle and hip neuromuscular changes compared with those who do not have a history of LAS. Objective To compare gluteus maximus (GMax), gluteus medius (GMed), and fibularis longus and brevis muscle activation using ultrasound imaging during tabletop exercises and lateral resistance-band walking in individuals with or without a history of LAS or chronic ankle instability (CAI). Design Cross-sectional study. Patients or Other Participants Sixty-seven young adults (27 males, 40 females). Groups were healthy = 16, coper = 17, LAS = 15, CAI = 19. The number of previous sprains was 0 ± 0 in the healthy group, 1.1 ± 0.3 in the coper group, 2.9 ± 2.4 in the LAS group, and 5.3 ± 5.9 in the CAI group. Main Outcome Measure(s) Ultrasound imaging measures of fibularis cross-sectional area (CSA) were collected during nonresisted and resisted ankle eversion. Gluteal muscle thicknesses were imaged during nonresisted and resisted side-lying abduction and during lateral resistance-band walking exercises (lower leg and forefoot band placement). Separate 4 × 2 repeated-measures analyses of variance and post hoc Fisher least significant difference tests were used to assess activation across groups and resistance conditions. Results All groups demonstrated 3.2% to 4.1% increased fibularis CSA during resisted eversion compared with nonresisted. During side-lying abduction, the LAS and CAI groups displayed increased GMax thickness (6.4% and 7.2%, respectively), and all but the CAI group (−0.4%) increased GMed thickness (5.3%–11.8%) with added resistance in hip abduction. During band walking, the healthy and LAS groups showed increased GMax thickness (4.8% and 8.1%, respectively), and all groups had increased GMed thickness (3.0%–5.8%) in forefoot position compared with the lower leg position. Although the values were not different, copers exhibited the greatest amount of GMed thickness during band-walking activities (copers = 23%–26%, healthy = 17%–23%, LAS = 11%–15%, CAI = 15%–19%). Conclusions All groups had increased fibularis CSA with resisted eversion. In side-lying hip abduction, individuals with CAI had greater GMax thickness than GMed thickness. Ultrasound imaging of fibularis CSA and gluteal muscle thickness may be clinically useful in assessing and treating patients with LAS or CAI.

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Section: Methodsmentioning

confidence: 99%

Ultrasonography of Gluteal and Fibularis Muscles During Exercises in Individuals With a History of Lateral Ankle Sprain

Koldenhoven

Fraser

Saliba

et al. 2019

Journal of Athletic Training

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“…Trials in which TKEO baseline was >50% of the average baseline TKEO of the respective subject were considered insufficient relaxation and were discarded. Automated, baseline-dependent M-mode onsets cannot be compared between different depths because ultrasound noise increases with depth, leading to less sensitive onset detection in deeper muscle regions 27 . Therefore, superficial and deep motion onsets were compared only in the visual analysis.…”

Section: Methodsmentioning

confidence: 99%

“…Measurements of the onset of muscle motion require higher temporal acuity than that provided by conventional B-mode ultrasound. M(otion)-mode ultrasound enables a temporal resolution of 1–5 ms 25 and permits the distinction of motion in superficial and deep muscle regions 7 26 27 . M-mode delineates the instantaneous positions of sound-reflecting tissue interfaces from a single ultrasound-beam which consecutively form a trace of displacement over time ( Fig.…”

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confidence: 99%

Spatial variation and inconsistency between estimates of onset of muscle activation from EMG and ultrasound

Dieterich

Botter

Vieira

et al. 2017

Sci Rep

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Delayed onset of muscle activation can be a descriptor of impaired motor control. Activation onset can be estimated from electromyography (EMG)-registered muscle excitation and from ultrasound-registered muscle motion, which enables non-invasive measurements in deep muscles. However, in voluntary activation, EMG- and ultrasound-detected activation onsets may not correspond. To evaluate this, ten healthy men performed isometric elbow flexion at 20% to 70% of their maximal force. Utilising a multi-channel electrode transparent to ultrasound, EMG and M(otion)-mode ultrasound were recorded simultaneously over the biceps brachii muscle. The time intervals between automated and visually estimated activation onsets were correlated with the regional variation of EMG and muscle motion onset, contraction level and speed. Automated and visual onsets indicated variable time intervals between EMG- and motion onset, median (interquartile range) 96 (121) ms and 48 (72) ms, respectively. In 17% (computed analysis) or 23% (visual analysis) of trials, motion onset was detected before local EMG onset. Multi-channel EMG and M-mode ultrasound revealed regional differences in activation onset, which decreased with higher contraction speed (Spearman ρ ≥ 0.45, P < 0.001). In voluntary activation the heterogeneous motor unit recruitment together with immediate motion transmission may explain the high variation of the time intervals between local EMG- and ultrasound-detected activation onset.

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“…Dieterich et al 22 reported that maximal-effort internal rotation torque in healthy persons increased by about 50% with the hip flexed as a compared to extend. This increased internal rotation torque with flexion may be due to the increased leverage of some of the internal rotator muscles such as the anterior fibers of the gluteus medius, as depicted in, but also to a reversal of rotary action of some of the traditional external rotators, such as the piriformis, or posterior fibers of the gluteus medius.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Piriformis Tightness in Third Trimester of Pregnancy - A Prevalence Study

Rathod¹,

Dhawale²,

Katage³

2022

Int J Health Sci Res

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Background: Gestational pain in the lower back region is a common concern, affecting up to 50% of pregnant women at some point in their gestation. Prolonged sitting position, biomechanical changes during pregnancy are the foremost cause of piriformis tightness in female that may eventually leads to piriformis syndrome and low back pain. Therefore, the present study was designed to identify the prevalence of piriformis tightness in pregnant females. Methods: 93 subjects enrolled in this study were evaluated and screened on the basis of the inclusion and exclusion criteria. Tightness of piriformis muscle was assessed using piriformis test & the limited ROM of hip due to tightness of piriformis muscle by using goniometer. Results: Data was analyzed using graph pad prism software. Piriformis tightness was found to be present in 27 subjects (29%). Prevalence of piriformis tightness was less in third trimester of pregnancy. However, the prevalence of piriformis tightness in females was statistically significant. Conclusion: Prevalence of piriformis muscle tightness in pregnant women of third trimester was very less in this study which concludes that females who were in third trimester of pregnancy not having piriformis tightness because of relaxin hormone which relaxes all the muscle for the normal growth of fetus. Key words: Gestational low back pain, Piriformis muscle tightness, Piriformis syndrome, Pregnancy, Third trimester.

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Differentiation of gluteus medius and minimus activity in weight bearing and non-weight bearing exercises by M-mode ultrasound imaging

Cited by 13 publications

References 25 publications

Ultrasonography of Gluteal and Fibularis Muscles During Exercises in Individuals With a History of Lateral Ankle Sprain

Ultrasonography of Gluteal and Fibularis Muscles During Exercises in Individuals With a History of Lateral Ankle Sprain

Spatial variation and inconsistency between estimates of onset of muscle activation from EMG and ultrasound

Assessment of Piriformis Tightness in Third Trimester of Pregnancy - A Prevalence Study

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