Correction: Shear-Wave Elastography Assessments of Quadriceps Stiffness Changes prior to, during and after Prolonged Exercise: A Longitudinal Study during an Extreme Mountain Ultra-Marathon

Andonian, Pierre; Viallon, Magalie; Goff, Caroline Le; Bourguignon, Charles de; Tourel, Charline; Morel, J.; Giardini, Guido; Gergelé, Laurent; Millet, Grégoire P.; Croisille, Pierre

doi:10.1371/journal.pone.0167668

Cited by 7 publications

(6 citation statements)

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“…To avoid anisotropy of the under-probe tissue, (a) the examination probe was held perpendicular to the tissue and (b) the B-mode image showed continuous striations (muscle fascicle) extending from superficial to deep aponeurosis [ 28 ]. Four permanent waterproof skin landmarks were drawn with a marker under 2D-mode monitoring during the pre-session to keep the same probe location during all the measurements [ 7 ]. To assess the stiffness of the rectus femoris and to differentiate between the superficial and deep muscle regions, two circular ROIs were set inside the muscle belly with the mid-distance of muscle thickness in diameter and without connective tissue inside them ( Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

“…The importance of myotendinous stiffness lies in its influence on the joint stability [ 2 , 3 ] and its relationship to explosive force production [ 4 ] and to stretching–shortening cycle activity performance [ 5 ]. Furthermore, the assessment of small changes in stiffness can be a method of early identification of the development of muscle fatigue, muscle damage or muscle injury [ 6 , 7 ], adaptations to sport practice [ 8 , 9 ] and even age-related changes in myotendinous properties [ 10 ]. The relationship between myotendinous stiffness and sport performance and injury prevention has provoked an increase in the number of studies that aim to describe the stiffness in different conditions [ 7 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

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The Applicability of Shear Wave Elastography to Assess Myotendinous Stiffness of Lower Limbs during an Incremental Isometric Strength Test

Bravo-Sánchez

Abián

Lucenteforte³

et al. 2022

Sensors

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The aim of the study was to describe the applicability of shear wave elastography to assess muscular and tendinous stiffness of the lower limbs during an incremental isometric strength test and to differentiate the stiffness evolution between superficial and deep muscle regions. Dominant rectus femoris and patellar tendons of 30 physically active people (28.3 ± 9.2 years, 173.2 ± 7.7 cm, 76.2 ± 12.6 kg) were measured in different isometric strength conditions (relaxed muscle, and at 10%, 20%, 30%, 40%, 50% and 60% of maximal voluntary contraction (MVC)). The percentage of success was >85% at all muscle contraction intensities for rectus femoris muscles but only in a relaxed condition for patellar tendons. Rectus femoris stiffness significantly increased compared to the relaxed condition from 30% to 60% MVC (p ≤ 0.011) in superficial muscle regions, and from 10% to 60% MVC (p ≤ 0.002) in deep muscle regions. Deep muscle regions showed higher stiffness values than superficial muscle regions at 30% MVC (51.46 ± 38.17 vs. 31.83 ± 17.05 kPa; p = 0.019), 40% MVC (75.21 ± 42.27 vs. 51.25 ± 28.90 kPa; p = 0.018), 50% MCV (85.34 ± 45.05 vs. 61.16 ± 37.03 kPa; p = 0.034) and 60% MVC (109.29 ± 40.04 vs. 76.67 ± 36.07 kPa; p = 0.002). Rectus femoris stiffness increased during the incremental isometric contraction test, and inter-region differences were found at 30% MVC.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Applicability of Shear Wave Elastography to Assess Myotendinous Stiffness of Lower Limbs during an Incremental Isometric Strength Test

Bravo-Sánchez

Abián

Lucenteforte³

et al. 2022

Sensors

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“…In addition, SWE has been applied to assessing muscle properties in sports‐related injuries and spasticity management, as well as in evaluating common nerve disorders such as carpal tunnel syndrome [7,39].…”

Section: Shear Wave Elastographymentioning

confidence: 99%

Section: Shear Wave Elastographymentioning

confidence: 99%

“…Moreover, SWE has been used to evaluate quadriceps muscle stiffness changes in competitors during an extreme mountain ultramarathon 330‐km race [39]. The authors found a significant decrease in quadriceps shear modulus upon finishing the race (3.31 ± 0.61 kPa) ( P < .001) compared to baseline (3.56 ± 0.63 kPa), followed by partial recovery after the race (3.45 ± 0.6 kPa) ( P =.002) [39]. They concluded that decreases in muscle stiffness may have been related to eccentric quadriceps loading, inflammation, and muscle edema associated with the physiologic stress of the race [39].…”

Section: Shear Wave Elastographymentioning

confidence: 99%

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Emerging Technological Advances in Musculoskeletal Ultrasound

Lin

Ooi

Chan

et al. 2018

PM&R

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Resting shear elastic modulus as a marker of peripheral fatigue during maximal isometric contractions in humans

Siracusa

Charlot²,

Malgoyre³

et al. 2018

Preprint

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16The aim of this study was to investigate whether the resting Vastus Lateralis (VL) muscle shear 17 elastic modulus (µ), evaluated by shear wave elastography, represents peripheral fatigue during 18 repetition of isometric maximal voluntary contractions (MVCs) of the knee extensor (KE) muscles. 19 Eight healthy well-trained males repeated 60 isometric MVCs of the KE muscles (6 × 10 MVCs; 5 s 20 on/5 s off). Single and double electrical stimulations were delivered to the femoral nerve every ten 21 MVCs during contraction and at rest. The amplitude and properties of the potentiated torque 22 following single (Tw pot ) double electrostimulation and the amplitude of the concomitant VL 23 compound action potential were considered to be indicators of peripheral fatigue. The resting VLµ 24 was measured during a 5-s rest period after each MVC and electrical stimulation series. 25 The resting VLµ significantly decreased (-21.8 ± 3.9%; P < 0.001) by the end of the fatigue protocol, 26 decreasing from the 10 th MVC to the end of the exercise (60 th MVC) for all participants, with the loss 27 ranging from 18 to 29%. The potentiated doublet and single twitch torque (Tw pot ) decreased by 42.5 28 ± 10.8% and 55.7 ± 8.8%, respectively, by the end of exercise (P < 0.001 for both). The relative 29 mechanical properties of Tw pot , i.e. electromechanical delay (P <0 .001), contraction time (P = 30 0.004), and maximal rate of torque development/relaxation (P < 0.001) also changed significantly 31 during exercise. 32 This study shows that the kinetics of the resting VLµ is associated with changes in both voluntary 33 and electrostimulated torque amplitudes and electromechanical properties of the single twitch during 34 the repetition of maximal voluntary fatiguing exercise. Changes in the resting VLµ may reflect a 35 decline in muscle function, e.g. impairment of excitation-contraction coupling, contractile processes, 3 36 and/or elastic properties, throughout the increase in muscle compliance, directly affecting force 37 transmission. Neuromuscular fatigue (NMF) is classically defined as "an exercise-induced reduction in the ability 40 of skeletal muscle to produce power or force, irrespective of task completion" [1]. The study of NMF 41 and underlying mechanisms of recovery, both central and peripheral, is important to prevent overuse 42 injuries [2] and develop new strategies to enhance muscle recovery [3]. 43NMF and, more specifically, the peripheral modifications that occur within the muscle, at or distal to 44 the neuromuscular junction [4], have been evaluated by artificial stimulation of the skeletal muscle 45 and/or motor nerve structures [5][6][7]. Modifications in mechanical and/or electromyographic (EMG) 46 response amplitudes delivered by single, double, or tetanic stimulation to a relaxed muscle are 47 considered to be good indicators of peripheral fatigue [1]. More specifically, the study of these 48 electrically-induced responses allows non-invasive investigation of changes of the (i) neuromuscular 49 propagation/tr...

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Correction: Shear-Wave Elastography Assessments of Quadriceps Stiffness Changes prior to, during and after Prolonged Exercise: A Longitudinal Study during an Extreme Mountain Ultra-Marathon

Abstract: In Table 1, the Sex (male/female) values under Finish and Recovery are incorrect. The values should be 27/0 and 27/0, respectively. Please see the corrected Table 1 here.

Cited by 7 publications

References 1 publication

The Applicability of Shear Wave Elastography to Assess Myotendinous Stiffness of Lower Limbs during an Incremental Isometric Strength Test

The Applicability of Shear Wave Elastography to Assess Myotendinous Stiffness of Lower Limbs during an Incremental Isometric Strength Test

Emerging Technological Advances in Musculoskeletal Ultrasound

Resting shear elastic modulus as a marker of peripheral fatigue during maximal isometric contractions in humans

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