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Russell MS, Vasilounis SS, Lefebvre E, Drake JDM, Chopp-Hurley JN. Variability in musculoskeletal fatigue responses associated with repeated exposure to an occupational overhead drilling task completed on successive days. Hum Mov Sci 2024; 97:103276. [PMID: 39213917 DOI: 10.1016/j.humov.2024.103276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 08/07/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
Emerging research suggests that muscular and kinematic responses to overhead work display a high degree of variability in fatigue-related muscular and kinematics changes, both between and within individuals when evaluated across separate days. This study examined whether electromyographic (EMG), kinematic, and kinetic responses to an overhead drilling task performed until volitional fatigue were comparable to those of a repeated identical exposure of the task completed 1 week later. Surface EMG and intramuscular EMG, sampled from 7 shoulder muscles, and right upper limb kinematics and kinetics were analyzed from 15 male and 14 female participants. No significant day-to-day changes in EMG mean power frequency (MPF) were observed, though serratus anterior displayed significantly less fatigue-related increase in EMG root-mean-squared (RMS) signal amplitude on day 2. Unfatigued upper kinematics on day 2 featured an increase in thoracohumeral elevation, elbow flexion, and decrease in wrist ulnar deviation compared to unfatigued state on day 1. Fatigue-related changes in shoulder joint flexion moment that were present on day 1 were reduced on day 2, suggesting that a more efficient overhead work strategy was learned and preserved across successive days. Day-to-day changes in upper limb joint angle variability, quantified by median absolute deviation (MdAD), were joint dependent. Despite yielding a variable fatigue-related kinetic strategy on both days, kinematic and kinetic fatigue-related changes on a second day of completing an overhead drilling task suggested a potential kinematic learning effect.
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Affiliation(s)
| | - Sam S Vasilounis
- School of Kinesiology and Health Science, York University, Canada
| | - Emily Lefebvre
- School of Kinesiology and Health Science, York University, Canada
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Santos R, Valamatos MJ, Mil-Homens P, Armada-da-Silva PAS. Effect of Knee Angle, Contractile Activity, and Intensity of Force Production on Vastus Lateralis Stiffness: A Supersonic Shear Wave Elastography Pilot Study. Sports (Basel) 2024; 12:211. [PMID: 39195587 PMCID: PMC11359883 DOI: 10.3390/sports12080211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 07/05/2024] [Accepted: 07/26/2024] [Indexed: 08/29/2024] Open
Abstract
Supersonic shear image (SSI) ultrasound elastography provides a quantitative assessment of tissue stiffness using the velocity of shear waves. SSI's great potential has allowed researchers in fields like biomechanics and muscle physiology to study the function of complex muscle groups in different conditions. The aim of this study is to use SSI to investigate changes in the stiffness of the vastus lateralis (VL) muscle as a consequence of passive elongation, isometric contraction, and repeated muscle activity. In a single session, 15 volunteers performed a series of isometric, concentric, and eccentric contractions. SSI images were collected from the VL to assess its stiffness before and after the contractions and at various knee angles. Two-way within-subjects ANOVA was used to test the effects of muscle contraction type and knee angle on VL stiffness. Linear regression analysis was employed to assess the relationship between muscle stiffness and the intensity of isometric contractions. After maximal contractions, VL stiffness increased by approximately 10% compared to baseline values, and following maximal isometric (p < 0.01) and eccentric contractions (p < 0.05). Yet, there was no change in VL shear modulus at the end of concentric contractions. The relaxed VL shear modulus increased with knee flexion both before and after the knee extensor contractions (p < 0.001). A linear relationship between the shear modulus and the degree of isometric contraction was observed, although with notable individual variation (R2 = 0.125). Maximal contractile activity produces modest increases in relaxed muscle stiffness. The SSI-measured shear modulus increases linearly with the degree of isometric contraction.
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Affiliation(s)
- Rute Santos
- Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Estrada da Costa, Portugal; (M.J.V.); (P.M.-H.); (P.A.S.A.-d.-S.)
- Coimbra Health School, Polytechnic University of Coimbra, Rua da Misericórdia, Lagar dos Cortiços, S. Martinho do Bispo, 3045-093 Coimbra, Portugal
- H&TRC—Health & Technology Research Center, Coimbra Health School, Polytechnic University of Coimbra, Rua 5 de Outubro, 3045-043 Coimbra, Portugal
- CIPER-UC—Interdisciplinary Center for the Study of Human Performance, University of Coimbra, 3004-531 Coimbra, Portugal
| | - Maria João Valamatos
- Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Estrada da Costa, Portugal; (M.J.V.); (P.M.-H.); (P.A.S.A.-d.-S.)
| | - Pedro Mil-Homens
- Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Estrada da Costa, Portugal; (M.J.V.); (P.M.-H.); (P.A.S.A.-d.-S.)
| | - Paulo A. S. Armada-da-Silva
- Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Estrada da Costa, Portugal; (M.J.V.); (P.M.-H.); (P.A.S.A.-d.-S.)
- Centro para o Estudo da Performance Humana, Faculdade de Motricidade Humana, Universidade de Lisboa, 1499-002 Estrada da Costa, Portugal
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Klich S, Michalik K, Pietraszewski B, Hansen EA, Madeleine P, Kawczyński A. Effect of applied cadence in repeated sprint cycling on muscle characteristics. Eur J Appl Physiol 2024; 124:1609-1620. [PMID: 38175273 PMCID: PMC11055783 DOI: 10.1007/s00421-023-05393-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 11/29/2023] [Indexed: 01/05/2024]
Abstract
PURPOSE This study aimed to investigate physiological responses, muscle-tendon unit properties of the quadriceps muscle, and mechanical performance after repeated sprint cycling at optimal and 70% of optimal cadence. METHODS Twenty recreational cyclists performed as first sprint performance cycling test and during subsequent sessions two repeated sprint cycling protocols at optimal and 70% of optimal cadence, in random order. The muscle-tendon unit outcome measures on the dominant leg included muscle thickness, fascicle length (Lf), pennation angle (θp), and stiffness for the rectus femoris (RF), vastus lateralis (VL), and vastus medialis muscle (VM) at baseline, immediately after repeated sprint cycling, and 1-h post-exercise. RESULTS The results showed an increase in muscle thickness and θp in RF, VL, and VM for both cadences from baseline to immediately after exercise. The Lf decreased in RF (both cadences), while stiffness decreased in RF, VL, and VM at optimal cadence, and in VL at 70% of optimal cadence from baseline to immediately after exercise. CONCLUSION The present study revealed that the alterations in muscle characteristics were more marked after repeated sprint cycling at optimal cadence compared with a lower cadence most likely as a result of higher load on the muscle-tendon unit at optimal cadence.
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Affiliation(s)
- Sebastian Klich
- Department of Paralympic Sport, Wrocław University of Health and Sport Sciences, 51-612, Wrocław, Poland.
| | - Kamil Michalik
- Department of Human Motor Skills, Wrocław University of Health and Sport Sciences, 51-612, Wroclaw, Poland
| | - Bogdan Pietraszewski
- Department of Biomechanics, Wrocław University of Health and Sport Sciences, 51-612, Wroclaw, Poland
| | - Ernst A Hansen
- Centre for Health and Rehabilitation, University College Absalon, 4200, Slagelse, Denmark
| | - Pascal Madeleine
- Department of Health Science and Technology, Aalborg University, ExerciseTech, 9260, Gistrup, Denmark
| | - Adam Kawczyński
- Department of Biomechanics and Sport Engineering, Gdansk University of Physical Education and Sport, 80-336, Gdansk, Poland
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Yang Y, Shahryari M, Meyer T, Marticorena Garcia SR, Görner S, Salimi Majd M, Guo J, Braun J, Sack I, Tzschätzsch H. Explorative study using ultrasound time-harmonic elastography for stiffness-based quantification of skeletal muscle function. Z Med Phys 2024:S0939-3889(24)00027-8. [PMID: 38508947 DOI: 10.1016/j.zemedi.2024.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/22/2024]
Abstract
Time-harmonic elastography (THE) is an emerging ultrasound imaging technique that allows full-field mapping of the stiffness of deep biological tissues. THE's unique ability to rapidly capture stiffness in multiple tissues has never been applied for imaging skeletal muscle. Therefore, we addressed the lack of data on temporal changes in skeletal muscle stiffness while simultaneously covering stiffness of different muscles. Acquiring repeated THE scans every five seconds we quantified shear-wave speed (SWS) as a marker of stiffness of the long head (LHB) and short head (SHB) of biceps brachii and of the brachialis muscle (B) in ten healthy volunteers. SWS was continuously acquired during a 3-min isometric preloading phase, a 3-min loading phase with different weights (4, 8, and 12 kg), and a 9-min postloading phase. In addition, we analyzed temporal SWS standard deviation (SD) as a marker of muscle contraction regulation. Our results (median [min, max]) showed both SWS at preloading (LHB: 1.04 [0.94, 1.12] m/s, SHB: 0.86 [0.78, 0.94] m/s, B: 0.96 [0.87, 1.09] m/s, p < 0.001) and the increase in SWS with loading weight to be muscle-specific (LHB: 0.010 [0.002, 0.019] m/s/kg, SHB: 0.022 [0.017, 0.042] m/s/kg, B: 0.039 [0.019, 0.062] m/s/kg, p < 0.001). Additionally, SWS during loading increased continuously over time by 0.022 [0.004, 0.051] m/s/min (p < 0.01). Using an exponential decay model, we found an average relaxation time of 27 seconds during postloading. Analogously, SWS SD at preloading was also muscle-specific (LHB: 0.018 [0.011, 0.029] m/s, SHB: 0.021 [0.015, 0.027] m/s, B: 0.024 [0.018, 0.037] m/s, p < 0.05) and increased by 0.005 [0.003, 0.008] m/s/kg (p < 0.01) with loading. SWS SD did not change over loading time and decreased immediately in the postloading phase. Taken together, THE of skeletal muscle is a promising imaging technique for in vivo quantification of stiffness and stiffness changes in multiple muscle groups within seconds. Both the magnitude of stiffness changes and their temporal variation during isometric exercise may reflect the functional status of skeletal muscle and provide additional information to the morphological measures obtained by conventional imaging modalities.
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Affiliation(s)
- Yang Yang
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Mehrgan Shahryari
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Tom Meyer
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Stephan Rodrigo Marticorena Garcia
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Steffen Görner
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Mahsa Salimi Majd
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Jing Guo
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Jürgen Braun
- Institute of Medical Informatics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Ingolf Sack
- Department of Radiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Heiko Tzschätzsch
- Institute of Medical Informatics, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Charitéplatz 1, 10117 Berlin, Germany.
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Trindade TB, Alves RC, de Sousa NMF, Lopes C, de Castro BM, Rosa TS, Prestes J. Acute Effect of the "Zero Point" Method on Muscle Thickness and Muscle Damage in Trained Men. Sports (Basel) 2023; 12:6. [PMID: 38251280 PMCID: PMC10819921 DOI: 10.3390/sports12010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/26/2023] [Accepted: 11/28/2023] [Indexed: 01/23/2024] Open
Abstract
The "zero point" method allows for lower intensities for an exercise session without impairing the total training volume. This study aimed to compare the effects of the "zero point" versus the traditional method on muscle responses and muscle damage in trained men. Fifteen experienced men (age: 27.7 ± 6.4 years; body mass: 78.4 ± 11.4 kg; height: 174.8 ± 4.9 cm; experience: 5.86 ± 4.7 years; relative bench press strength: 1.38 ± 0.17 kg·kg-1) were subjected to two exercise protocols in a randomized order and separated by a week. The traditional and "zero point" methods were applied in the bench press, with loads of 70% and 50% of one repetition maximum (1RM), respectively, for 10 sets until concentric failure, with 3-min intervals between sets. The zero point method displayed a higher number of repetitions and time under tension than the traditional method, with no difference in the total training volume, echo intensity, algometry, lactate, and myoglobin. For the muscle thickness, no differences between the groups were presented, except for the deltoid muscle thickness, in which a higher post-training volume was observed compared to traditional training. The "zero point" method increases the demand on the deltoid muscles in the bench press exercise, but not on the pectoralis and triceps brachii.
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Affiliation(s)
- Thiago B. Trindade
- Department of Physical Education, Catholic University of Brasilia, QS 07, Lote 01, Taguatinga, Brasilia 71966-700, DF, Brazil; (N.M.F.d.S.); (B.M.d.C.); (T.S.R.); (J.P.)
| | - Ragami C. Alves
- Department of Physical Education, Federal University of Paraná, Curitiba 80050-540, PR, Brazil;
| | - Nuno Manuel Frade de Sousa
- Department of Physical Education, Catholic University of Brasilia, QS 07, Lote 01, Taguatinga, Brasilia 71966-700, DF, Brazil; (N.M.F.d.S.); (B.M.d.C.); (T.S.R.); (J.P.)
| | - Charles Lopes
- Department of Physical Education, Methodist University of Piracicaba, Piracicaba 13420-835, SP, Brazil;
- Faculty Adventist of Hortolândia, Hortolândia 13184-010, SP, Brazil
| | - Bruno Magalhães de Castro
- Department of Physical Education, Catholic University of Brasilia, QS 07, Lote 01, Taguatinga, Brasilia 71966-700, DF, Brazil; (N.M.F.d.S.); (B.M.d.C.); (T.S.R.); (J.P.)
| | - Thiago S. Rosa
- Department of Physical Education, Catholic University of Brasilia, QS 07, Lote 01, Taguatinga, Brasilia 71966-700, DF, Brazil; (N.M.F.d.S.); (B.M.d.C.); (T.S.R.); (J.P.)
| | - Jonato Prestes
- Department of Physical Education, Catholic University of Brasilia, QS 07, Lote 01, Taguatinga, Brasilia 71966-700, DF, Brazil; (N.M.F.d.S.); (B.M.d.C.); (T.S.R.); (J.P.)
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Shembel AC, Morrison RA, Fetzer DT, Patterson-Lachowicz A, McDowell S, Comstock Smeltzer JC, Mau T. Extrinsic Laryngeal Muscle Tension in Primary Muscle Tension Dysphonia with Shear Wave Elastography. Laryngoscope 2023; 133:3482-3491. [PMID: 37334857 PMCID: PMC10728340 DOI: 10.1002/lary.30830] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 05/09/2023] [Accepted: 05/30/2023] [Indexed: 06/21/2023]
Abstract
OBJECTIVES It has been assumed that patients with primary muscle tension dysphonia (pMTD) have more extrinsic laryngeal muscle (ELM) tension, but tools to study this phenomenon lack. Shear wave elastography (SWE) is a potential method to address these shortcomings. The objectives of this study were to apply SWE to the ELMs, compare SWE measures to standard clinical metrics, and determine group differences in pMTD and typical voice users before and after vocal load. METHODS SWE measurements of the ELMs from ultrasound examinations of the anterior neck, supraglottic compression severities from laryngoscopic images, cepstral peak prominences (CPP) from voice recordings, and self-perceptual ratings of vocal effort and discomfort were obtained in voice users with (N = 30) and without (N = 35) pMTD, before and after a vocal load challenge. RESULTS ELM tension significantly increased from rest-to-voiced conditions in both groups. However, the groups were similar in their ELM stiffness levels at SWE at baseline, during vocalization, and post-vocal load. Levels of vocal effort and discomfort and supraglottic compression were significantly higher and CPP was significantly lower in the pMTD group. Vocal load had a significant effect on vocal effort and discomfort but not on laryngeal or acoustic patterns. CONCLUSION SWE can be used to quantify ELM tension with voicing. Although the pMTD group reported significantly higher levels of vocal effort and vocal tract discomfort and, on average, exhibited significantly more severe supraglottic compression and lower CPP values, there were no group differences in levels of ELM tension using SWE. LEVEL OF EVIDENCE 2 Laryngoscope, 133:3482-3491, 2023.
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Affiliation(s)
- Adrianna C. Shembel
- Department of Otolaryngology-Head and Neck, Voice Center, University of Texas Southwestern Medical Center, Dallas, TX, United States
- School of Behavioral and Brain Sciences, Department of Speech, Language, and Hearing, University of Texas at Dallas, Richardson, TX, United States
| | - Robert A. Morrison
- School of Behavioral and Brain Sciences, Department of Speech, Language, and Hearing, University of Texas at Dallas, Richardson, TX, United States
| | - David T. Fetzer
- Department of Radiology, CACTUS Lab, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Amber Patterson-Lachowicz
- Department of Radiology, CACTUS Lab, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Sarah McDowell
- School of Behavioral and Brain Sciences, Department of Speech, Language, and Hearing, University of Texas at Dallas, Richardson, TX, United States
| | - Julianna C. Comstock Smeltzer
- School of Behavioral and Brain Sciences, Department of Speech, Language, and Hearing, University of Texas at Dallas, Richardson, TX, United States
| | - Ted Mau
- Department of Otolaryngology-Head and Neck, Voice Center, University of Texas Southwestern Medical Center, Dallas, TX, United States
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Bouvier J, Ogier AC, Martin C, Fouré A. Effect of knee joint angle on vastus medialis and vastus lateralis rigidity during isometric submaximal voluntary knee extensions. J Electromyogr Kinesiol 2023; 73:102826. [PMID: 37774557 DOI: 10.1016/j.jelekin.2023.102826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 07/21/2023] [Accepted: 09/20/2023] [Indexed: 10/01/2023] Open
Abstract
The use of shear wave elastography during voluntary contraction has enabled the non-invasive assessment of load sharing strategies between agonist muscles. However, the change in joint angle and voluntary contraction intensity can modify contribution between muscles. The aim of this study was to investigate the effect of knee joint angle on the local mechanical properties of the vastus medialis (VM) and the vastus lateralis (VL) during isometric submaximal voluntary contractions from shear wave elastography mapping. The VM and VL Young's modulus at rest and during constant isometric submaximal voluntary contractions (i.e., 25%, 50% and 75% of maximal voluntary contraction [MVC]) were assessed for two knee angles (50° and 100° | knee fully extended = 0°) in twelve participants. No significant difference was found in the VM Young's modulus among all torque levels and knee angles (p > 0.05). VL Young's modulus was significantly higher at 25% MVC for a knee angle of 100° than at 75% MVC for the same knee angle and was greater at 25% MVC for a knee angle of 100° than for 50° (p < 0.05). In contrast to the VM, the contribution of the VL to the knee joint torque production during isometric voluntary contraction appears to depend on the muscle length and the relative knee extension torque level.
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Affiliation(s)
- Jérémie Bouvier
- Universite Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM), F-69622 Villeurbanne, France.
| | - Augustin C Ogier
- University of Lausanne, Lausanne University Hospital, Department of Diagnostic and Interventional Radiology, Lausanne, Switzerland
| | - Cyril Martin
- Universite Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM), F-69622 Villeurbanne, France
| | - Alexandre Fouré
- Universite Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité (LIBM), F-69622 Villeurbanne, France.
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Freitas SR, Radaelli R, Oliveira R, Vaz JR. Hamstring Stiffness and Strength Responses to Repeated Sprints in Healthy Nonathletes and Soccer Players With Versus Without Previous Injury. Sports Health 2023; 15:824-834. [PMID: 37254837 PMCID: PMC10606964 DOI: 10.1177/19417381231175474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND The effect of 10 × 30 m repeated sprints on passive and active stiffness of semitendinosus (ST) and biceps femoris long head (BFlh), and knee flexor maximal voluntary isometric contraction (MVIC) and rate of force development (RFD), and whether athletes with previous hamstring injury have a different response, is unknown. HYPOTHESIS Repeated sprints would (1) increase BFlh stiffness and decrease ST stiffness and knee flexors MVIC and RFD in healthy participants; and (2) greater magnitude of response would be seen in athletes with previous hamstring injury. STUDY DESIGN Case series (experiment I) and case control (experiment II) study designs. LEVEL OF EVIDENCE Level 3. METHODS Healthy nonathletes attended 2 replicated sessions (experiment I, n = 18), while soccer players with (n = 38) and without (n = 67) previous hamstring injury attended 1 testing session (experiment II). RESULTS In both experiments, the knee flexors MVIC and RFD decreased after the sprints (P < 0.05). In experiment I, the ST and BFlh passive stiffness reduced after the sprints (P < 0.02), while a small BFlh active stiffness increase was noted (P = 0.02); however, no correlation was observed between the 2 testing sessions for the postsprint muscle stiffness responses (r = -0.07-0.44; P > 0.07). In experiment II, only an ST passive stiffness reduction was observed after the sprints (P < 0.01). No differences were noted between injured and noninjured lower limbs for any variable (P > 0.10). CONCLUSION Repeated sprints are likely to decrease the knee flexor's maximal and rapid strength, and to alter the hamstring stiffness in the nonathlete population. Previous hamstring injury does not apparently affect the footballer's hamstring functional and mechanical responses to repeated sprints. CLINICAL RELEVANCE The responses of hamstring stiffness and knee flexor strength to repeated sprints are unlikely to be associated with hamstring injury.
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Affiliation(s)
- Sandro R. Freitas
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal
| | - Régis Radaelli
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal
- Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, Monte de Caparica, Setúbal, Portugal
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal
| | - Raúl Oliveira
- Laboratório de Função Neuromuscular, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal
| | - João R. Vaz
- Egas Moniz Center for Interdisciplinary Research, Egas Moniz School of Health and Science, Monte de Caparica, Setúbal, Portugal
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz-Quebrada, Lisboa, Portugal
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Pimenta R, Lopes T, Correia JP, Veloso AP. Effects of repeated sprinting on hamstring shear modulus pattern and knee flexor neuromuscular parameters. Sci Rep 2023; 13:12624. [PMID: 37537276 PMCID: PMC10400546 DOI: 10.1038/s41598-023-38861-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 07/16/2023] [Indexed: 08/05/2023] Open
Abstract
The purpose of the present study was to examine the acute effects of a maximum repeated sprint protocol on (1) hamstring shear modulus and (2) knee flexor neuromuscular parameters such as peak torque (PT) and rate of torque development (RTD). Muscle shear modulus was assessed in 18 healthy males using shear wave elastography at rest and during 30° isometric knee flexion at 20% of maximal voluntary isometric contraction, before and after a 10 × 30 m repeated sprint protocol. There was a 9% decrease in average speed between the fastest and slowest sprint (p < 0.001; d = 2.27). A pre-post decrease was observed in PT (p = 0.004; η2p = 0.399) and in the 0-50 ms (p = 0.042; η2p = 0.222), and 50-100 ms (p = 0.028; η2p = 0.254) RTD periods. For the active shear modulus, the only significant change after the sprint task was in the biceps femoris long head (BFlh) with an increase of 10% (Pre: 26.29 ± 8.89 kPa; Post: 28.93 ± 8.31 kPa; p = 0.015; d = 0.31). The present study provides evidence that repeated sprinting leads to significant decreases in average speed, PT, early RTD (0-50 ms; 50-100 ms), and to an increase in BFlh active shear modulus without changing the shear modulus of the other hamstrings muscles.
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Affiliation(s)
- Ricardo Pimenta
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1499-002, Cruz Quebrada - Dafundo, Lisboa, Portugal.
- Research Center of the Polytechnic Institute of Maia (N2i), Maia Polytechnic Institute (IPMAIA), Castêlo da Maia, 4475-690, Maia, Portugal.
| | - Tomás Lopes
- Department of Biochemistry, King's College London, Strand, London, UK
| | - José Pedro Correia
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1499-002, Cruz Quebrada - Dafundo, Lisboa, Portugal
| | - António Prieto Veloso
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, 1499-002, Cruz Quebrada - Dafundo, Lisboa, Portugal
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Xu W, Zheng Y, Jiang Y, Zhang Z, Ma S, Cao Y. Shear wave imaging the active constitutive parameters of living muscles. Acta Biomater 2023; 166:400-408. [PMID: 37230437 DOI: 10.1016/j.actbio.2023.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
Shear wave elastography (SWE) of human skeletal muscles allows for measurement of muscle elastic properties in vivo and has important applications in sports medicine and for the diagnosis and treatment of muscle-related diseases. Existing methods of SWE for skeletal muscles rely on the passive constitutive theory and have so far been unable to provide constitutive parameters describing muscle active behavior. In the present paper, we overcome this limitation by proposing a SWE method for quantitative inference of active constitutive parameters of skeletal muscles in vivo. To this end, we investigate the wave motion in a skeletal muscle described by a constitutive model in which muscle active behavior has been defined by an active parameter. An analytical solution relating shear wave velocities to both passive and active material parameters of muscles is derived, based upon which an inverse approach has been developed to evaluate these parameters. To demonstrate the usefulness of the reported method, in vivo experiments were carried out on 10 volunteers to obtain constitutive parameters, particularly those describing active deformation behaviors of living muscles. The results reveal that the active material parameter of skeletal muscles varies with warm-up, fatigue and rest. STATEMENT OF SIGNIFICANCE: Existing shear wave elastography methods are limited to imaging the passive parameters of muscles. This limitation is addressed in the present paper by developing a method to image the active constitutive parameter of living muscles using shear waves. We derived an analytical solution demonstrating the relationship between constitutive parameters of living muscles and shear waves. Relying on the analytical solution, we proposed an inverse method to infer active parameter of skeletal muscles. We performed in vivo experiments to demonstrate the usefulness of the theory and method; the quantitative variation of the active parameter with muscle states such as warm-up, fatigue and rest has been reported for the first time.
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Affiliation(s)
- Weiqiang Xu
- Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, PR China
| | - Yang Zheng
- Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, PR China
| | - Yuxuan Jiang
- Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, PR China
| | - Zhaoyi Zhang
- Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, PR China
| | - Shiyu Ma
- Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, PR China
| | - Yanping Cao
- Institute of Biomechanics and Medical Engineering, AML, Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, PR China.
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11
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Jiang L, Yu Q, Zhang X, Wang D, Chen H, Jiang W. Regional assessments of supraspinatus muscle stiffness in normal adults using shear wave elastography. Heliyon 2023; 9:e17696. [PMID: 37539314 PMCID: PMC10395121 DOI: 10.1016/j.heliyon.2023.e17696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 08/05/2023] Open
Abstract
Objectives To provide normal references for regional shear wave elastography assessments of supraspinatus muscle in a population. Methods Shear wave elastography images of supraspinatus muscles were evaluated on 100 shoulders of 50 normal adults in a fixed position with 30° shoulder abduction both at rest and contraction. Shear wave velocity values and activity values of intramuscular tendon, anterior superficial, anterior deep, posterior superficial, posterior deep, and central subregions were measured. The possible differences in hand dominance, sexes, stratified age groups, and internal muscular-component subregions were discussed. Results The results showed that shear wave velocity values at rest and activity values differed significantly among supraspinatus muscular-component subregions. Shear wave velocity values at rest were normally highest in posterior deep and lowest in central subregions, whereas activity values were highest in central subregions. The results also showed evaluation of the intramuscular tendon using shear wave elastography to be practicable. The differences in shear wave velocity values at rest between the dominant and nondominant sides were not significant in each subregion, while the values at rest of the majority of subregions were significantly greater in males than in females. Stratified by age groups of 10 years, the shear wave velocity values at rest of some subregions tended to increase with age, with uncorrelations possibly related to insufficient sample sizes and different intensities of limb activities. Conclusions This study suggested that regional assessments of supraspinatus stiffness using shear wave elastography are feasible, with further research supporting that it can provide information on the surgery, training, and rehabilitation of rotator cuff tears.
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Affiliation(s)
- Lan Jiang
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qian Yu
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xihong Zhang
- School of Public Health, North China University of Science and Technology, China
| | - Dong Wang
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Hong Chen
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wei Jiang
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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12
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Evangelidis PE, Shan X, Otsuka S, Yang C, Yamagishi T, Kawakami Y. Fatigue-induced changes in hamstrings' active muscle stiffness: effect of contraction type and implications for strain injuries. Eur J Appl Physiol 2023; 123:833-846. [PMID: 36494585 PMCID: PMC10030419 DOI: 10.1007/s00421-022-05104-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/16/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE Hamstring strain injuries may occur due to differential fatigue and compromised mechanical properties among the hamstring muscles. We examined (1) the effect of fatigue on hamstrings active muscle stiffness, and (2) whether contraction type affects active muscle stiffness changes during a submaximal fatiguing task. METHODS Nine healthy males completed 99 submaximal knee flexions in isometric (ISO), concentric (CON), and eccentric (ECC) conditions. We measured the knee flexor maximal voluntary torque (MVT) (pre/post), shear wave velocity (SWV) during contraction and transverse relaxation times (T2) (pre/post) in biceps femoris long head (BFlh), semitendinosus (ST), and semimembranosus (SM) muscles. RESULTS MVT decreased substantially after all conditions (- 18.4 to - 33.6%). The average relative torque sustained during the task was lower in CON than ISO and ECC, but absolute torque was similar. SWV interindividual responses were highly variable across muscles and contraction types. On average, BFlh SWV tended to increase in ISO (0.4 m/s, 4.5%, p = 0.064) but decreased in ECC condition (- 0.8 m/s, - 7.7%, p < 0.01). ST SWV decreased in CON (- 1.1 m/s, - 9.0%, p < 0.01), while it remained unchanged in ISO and ECC. SM SWV decreased in CON (- 0.8 m/s, - 8.1%, p < 0.01), but it was unaffected in ISO and variable in ECC. CONCLUSION Fatigue has a differential effect on the mechanical properties of the constituent hamstring muscles, as measured with shear wave elastography, depending upon contraction type. We found preliminary evidence that BFlh is more fatigued than ST or SM during eccentric contractions, which may explain its susceptibility to strain injuries.
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Affiliation(s)
- Pavlos E Evangelidis
- Faculty of Sport Sciences, Waseda University, Tokyo, Japan.
- Japan Society for the Promotion of Science, Tokyo, Japan.
| | - Xiyao Shan
- Department of Anatomy, Aichi Medical University, Tokyo, Japan
| | - Shun Otsuka
- Department of Anatomy, Aichi Medical University, Tokyo, Japan
| | - Chi Yang
- Graduate School of Sport Sciences, Waseda University, Tokyo, Japan
| | | | - Yasuo Kawakami
- Faculty of Sport Sciences, Waseda University, Tokyo, Japan
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Ataabadi PA, Abbasi A, Shojaatian M, Letafatkar A, Svoboda Z, Rossettini G. The effects of facilitatory and inhibitory kinesiotaping of Vastus Medialis on the activation and fatigue of superficial quadriceps muscles. Sci Rep 2022; 12:13451. [PMID: 35927291 PMCID: PMC9352761 DOI: 10.1038/s41598-022-17849-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 08/02/2022] [Indexed: 11/09/2022] Open
Abstract
This study aimed to investigate how facilitatory and inhibitory KT of the Vastus Medialis affected the activation and the fatigue indices of VM, Vastus Lateralis (VL) and Rectus Femoris (RF) throughout a dynamic fatigue protocol. Seventeen collegiate athletes (Ten males, seven females, age: 24.76 ± 3.99 years, height: 1.73 ± 0.10 m, mass: 68.11 ± 8.54 kg) voluntarily participated in four dynamic fatigue protocol sessions in which no-tape (control condition), inhibitory, facilitatory and sham KTs were applied to the Vastus Medialis in each session. The protocol included 100 dynamic maximum concentric knee extensions at 90°/s using an isokinetic dynamometry device. The knee extensor muscle activities were recorded using wireless surface electromyography. The average muscle activity (Root mean square) during the first three repetitions and the repetitions number of 51-100, respectively, were used to calculate the before and after exhaustion muscle activity. Furthermore, median frequency slope during all repetitions was reported as the fatigue rate of muscles during different KT conditions and for the control condition (no-tape). The results showed neither muscle activation (significance for the main effect of KT; VM = 0.82, VL = 0.72, RF = 0.19) nor fatigue rate (significance for the main effect of KT; VM = 0.11 VL = 0.71, RF = 0.53) of the superficial knee extensor muscles were affected in all four conditions. These findings suggest that the direction of KT cannot reduce, enhance muscle activity or cause changes in muscle exhaustion. Future studies should investigate the generalizability of current findings to other populations.
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Affiliation(s)
- Peyman Aghaie Ataabadi
- Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
| | - Ali Abbasi
- Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran
| | - Mohsen Shojaatian
- Department of Sports Biomechanics and Motor Control, Faculty of Physical Education and Sports Sciences, Mazandaran University, Babolsar, Iran
| | - Amir Letafatkar
- Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sports Sciences, Kharazmi University, Tehran, Iran.
- Biomechanics and Corrective Exercise Laboratory, Faculty of Physical Education and Sport Sciences, Kharazmi University, Mirdamad Blvd., Hesari St, Tehran, Iran.
| | - Zdenek Svoboda
- Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic
| | - Giacomo Rossettini
- School of Physiotherapy, University of Verona, Via Bengasi 4, 37134, Verona, Italy
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14
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Mohr M, von Tscharner V, Nigg S, Nigg BM. Systematic reduction of leg muscle activity throughout a standard assessment of running footwear. JOURNAL OF SPORT AND HEALTH SCIENCE 2022; 11:309-318. [PMID: 33453431 PMCID: PMC9189700 DOI: 10.1016/j.jshs.2021.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 11/16/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
PURPOSE This study aimed to investigate whether there is a systematic change of leg muscle activity, as quantified by surface electromyography (EMG), throughout a standard running footwear assessment protocol at a predetermined running speed. METHODS Thirty-one physically active adults (15 females and 16 males) completed 5 testing rounds consisting of overground running trials at a speed of 3.5 m/s. The level of muscle activity from 6 major leg muscles was recorded using surface EMG. The variables assessed were the EMG total intensity as a function of time and the cumulative EMG overall intensity. Systematic effects of the chronological testing round (independent variable) on the normalized EMG overall intensity (dependent variable) were examined using Friedman analysis of variates and post hoc pairwise Wilcoxon signed-rank tests (α = 0.05). RESULTS There was a systematic reduction in overall EMG intensity for all 6 muscles over the time course of the running protocol (p < 0.001) until the fourth testing round when EMG intensities reached a steady state. The one exception was the biceps femoris muscle, which showed a significant reduction of EMG intensity during the stance phase (p < 0.001) but not the swing phase (p = 0.16). CONCLUSION While running at a predetermined speed, the neuromuscular system undergoes an adaptation process characterized by a progressive reduction in the activity level of major leg muscles. This process may represent an optimization strategy of the neuromuscular system towards a more energetically efficient running style. Future running protocols should include a familiarization period of at least 7 min or 600 strides of running at the predetermined speed.
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Affiliation(s)
- Maurice Mohr
- Department of Sport Science, University of Innsbruck, Innsbruck 6020, Austria; Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada.
| | - Vinzenz von Tscharner
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Sandro Nigg
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Benno M Nigg
- Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada
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15
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Kolind MI, Gam S, Phillip JG, Pareja-Blanco F, Olsen HB, Gao Y, Søgaard K, Nielsen JL. Effects of low load exercise with and without blood-flow restriction on microvascular oxygenation, muscle excitability and perceived pain. Eur J Sport Sci 2022; 23:542-551. [PMID: 35125067 DOI: 10.1080/17461391.2022.2039781] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This paper aimed to examine the acute effect of low-load (LL) exercise with blood-flow restriction (LL-BFR) on microvascular oxygenation and muscle excitability of the vastus medialis (VM) and vastus lateralis (VL) muscles during a single bout of unilateral knee extension exercise performed to task failure. Seventeen healthy recreationally resistance-trained males were enrolled in a within-group randomized cross-over study design. Participants performed one set of unilateral knee extensions at 20% of one-repetition maximum (1RM) to task failure, using a LL-BFR or LL free-flow (LL-FF) protocol in a randomized order on separate days. Changes in microvascular oxygenation and muscle excitability in VL and VM were assessed using near-infrared spectroscopy (NIRS) and surface electromyography (sEMG), respectively. Pain measures were collected using the visual analog scale (VAS) before and following set completion. Within- and between- protocol comparisons were performed at multiple time points of set completion for each muscle. During LL-BFR, participants performed 43% fewer repetitions and reported feeling more pain compared to LL-FF (p<0.05). Normalized to time to task failure, LL-BFR and LL-FF generally demonstrated similar progression in microvascular oxygenation and muscle excitability during exercise to task failure. The present results demonstrate that LL-BFR accelerates time to task failure, compared with LL-FF, resulting in a lower dose of mechanical work to elicit similar levels of oxygenation, blood-pooling, and muscle excitability. LL-BFR may be preferable to LL-FF in clinical settings where high workloads are contraindicated, although increased pain experienced during BFR may limit its application.HighlightsCompared to free flow (FF), neuromuscular fatigue mechanisms are accelerated during blood flow restricted (BFR) training. This can be observed as changes in microvascular oxygenation and muscle excitability occurring at a ∼43% faster mean rate during BFR compared to FF.BFR exercise seems to elicit the same level of neuromuscular fatigue as FF training within a shorter timeframe. This reduces total joint load and may be especially helpful in cases where high training volumes may be contraindicated (e.g. recovering from a sports injury or orthopedic surgery).
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Affiliation(s)
- Mikkel I. Kolind
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
| | - Søren Gam
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
| | - Jeppe G. Phillip
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
| | - Fernando Pareja-Blanco
- Physical Performance & Sports Research Center, Universidad Pablo de Olavide, Ctra. de Utrera, 1, 41013 Sevilla, Spain
| | - Henrik B. Olsen
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
| | - Ying Gao
- Department of Sports Science, College of Education, Zhejiang University, 310028 Hangzhou, China
- Faculty of Sport and Health Sciences, University of Jyväskylä, Seminaarinkatu 15, 40014 Jyväskylä, Finland
| | - Karen Søgaard
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
- Department of Clinical Research, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
| | - Jakob L. Nielsen
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Campus vej 55, 5230 Odense, Denmark
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16
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Park H, Kim S, Nussbaum MA, Srinivasan D. Effects of using a whole-body powered exoskeleton during simulated occupational load-handling tasks: A pilot study. APPLIED ERGONOMICS 2022; 98:103589. [PMID: 34563748 DOI: 10.1016/j.apergo.2021.103589] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Whole-body powered exoskeletons (WB-PEXOs) can be effective in reducing the physical demands of heavy occupational work, yet almost no empirical evidence exists on the effects of WB-PEXO use. This study assessed the effects of WB-PEXO use on back and leg muscle activities during lab-based simulations of load handling tasks. Six participants (4M, 2F) completed two such tasks (load carriage and stationary load transfer), both with and without a WB-PEXO, and with a range of load masses in each task. WB-PEXO use reduced median levels of muscle activity in the back (∼42-53% in thoracic and ∼24-43% in lumbar regions) and legs (∼41-63% in knee flexors and extensors), and mainly when handling loads beyond low-moderate levels (10-15 kg). Overall, using the WB-PEXO also reduced inter-individual variance (smaller SD) in muscle activities. Future work should examine diverse users, focus on finding effective matches between WB-PEXO use and specific tasks, and identify applications in varied work environments.
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Affiliation(s)
- Hanjun Park
- Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Sunwook Kim
- Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Maury A Nussbaum
- Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, USA
| | - Divya Srinivasan
- Department of Industrial Engineering, Clemson University, Clemson, SC, USA.
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17
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Yamazaki K, Inoue K, Miyamoto N. Passive and active muscle elasticity of medial gastrocnemius is related to performance in sprinters. Eur J Appl Physiol 2021; 122:447-457. [PMID: 34797438 DOI: 10.1007/s00421-021-04848-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 10/29/2021] [Indexed: 11/29/2022]
Abstract
PURPOSE Limited information is available on the association between muscle material properties and sprint performance. We aimed to identify whether and how the elasticity of passive and active muscle of the medial gastrocnemius (MG) is related to sprint performance. METHODS MG shear wave speed was measured under passive and active (20%, 50%, 80% of maximal voluntary contraction [MVC]) conditions, with ultrasound shear wave elastography, in 18 male sprinters. Passive and active ankle joint stiffness was assessed by applying a short-range fast stretch during 0%, 20%, 50%, and 80% MVC of plantar flexion. Additionally, rate of torque development (RTD) during explosive plantar flexion was measured. RESULTS Passive and active MG shear wave speed was negatively correlated with 100-m race time. Passive MG shear wave speed was positively correlated with RTD, and RTD was negatively correlated with 100-m race time. MG shear wave speed at 50% and 80% MVC showed a positive correlation with ankle joint stiffness at the corresponding contraction level, and ankle joint stiffness at 50% and 80% MVC showed negative correlations with 100-m race time. These correlations were significant even after controlling for MVC torque. CONCLUSION Our findings indicate that passive and active muscle elasticity of plantar flexor is important to achieve superior sprint performance. Specifically, high elasticity of passive MG could be related to superior sprint performance through high explosive torque production. In contrast, high elasticity of active MG at moderate-to-high intensity is likely related to high sprint performance through high ankle joint stiffness.
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Affiliation(s)
- Kazuhiko Yamazaki
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hiraka-gakuendai, Inzai, Chiba, 270-1695, Japan
| | - Kakeru Inoue
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hiraka-gakuendai, Inzai, Chiba, 270-1695, Japan
| | - Naokazu Miyamoto
- Graduate School of Health and Sports Science, Juntendo University, 1-1 Hiraka-gakuendai, Inzai, Chiba, 270-1695, Japan.
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18
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Remeniéras JP, Bulot M, Gennisson JL, Patat F, Destrade M, Bacle G. Acousto-elasticity of transversely isotropic incompressible soft tissues: characterization of skeletal striated muscle. Phys Med Biol 2021; 66. [PMID: 34186529 DOI: 10.1088/1361-6560/ac0f9b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/29/2021] [Indexed: 01/02/2023]
Abstract
Using shear wave elastography, we measure the changes in the wave speed with the stress produced by a striated muscle during isometric voluntary contraction. To isolate the behaviour of an individual muscle from complementary or antagonistic actions of adjacent muscles, we select theflexor digiti minimimuscle, whose sole function is to extend the little finger. To link the wave speed to the stiffness, we develop an acousto-elastic theory for shear waves in homogeneous, transversely isotropic, incompressible solids subject to an uniaxial stress. We then provide measurements of the apparent shear elastic modulus along, and transversely to, the fibre axis for six healthy human volunteers of different age and sex. The results display a great variety across the six subjects. We find that the slope of the apparent shear elastic modulus along the fibre direction changes inversely to the maximum voluntary contraction (MVC) produced by the volunteer. We propose an interpretation of our results by introducing the S (slow) or F (fast) nature of the fibres, which harden the muscle differently and accordingly, produce different MVCs. A natural follow-up on this study is to apply the method to patients with musculoskeletal disorders or neurodegenerative diseases.
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Affiliation(s)
| | - Mahé Bulot
- UMR 1253, iBrain, Université de Tours, Inserm, Tours, France
| | - Jean-Luc Gennisson
- Laboratoire d'imagerie biomédicale multimodale à Paris-Saclay, Université Paris-Saclay, CEA, CNRS UMR 9011, INSERM UMR 1281, France
| | - Frédéric Patat
- UMR 1253, iBrain, Université de Tours, Inserm, Tours, France.,Inserm CIC-IT 1415, Tours, France
| | - Michel Destrade
- School of Mathematics, Statistics and Applied Mathematics, NUI Galway, University Road, Galway, Ireland
| | - Guillaume Bacle
- UMR 1253, iBrain, Université de Tours, Inserm, Tours, France.,Service de chirurgie orthopédique et traumatologique 1A, Unité de chirurgie de la main et du membre supérieur, CHRU de Tours, France
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19
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Yagi M, Tateuchi H, Umehara J, Motomura Y, Hirono T, Nojiri S, Pataky TC, Ichihashi N. Muscle size-scaled shear elastic modulus: A muscle force index independent of maximal voluntary contraction, assessed during elbow extension. J Biomech 2020; 112:110049. [PMID: 33022486 DOI: 10.1016/j.jbiomech.2020.110049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 05/20/2020] [Accepted: 09/12/2020] [Indexed: 11/16/2022]
Abstract
Shear elastic modulus (G) can differ among individuals due to muscle size and other factors, even for constant muscle force. Inter-individual comparisons of G usually require normalization by maximal voluntary contraction (MVC), but MVC procedures may not be appropriate for certain clinical populations including those presenting with pain or other compromised functionality. This study aimed to test whether muscle size-scaled G, which does not require MVC testing, would yield stronger correlation with absolute torque than unscaled G. Twelve-healthy males performed isometric elbow extension across a range of torque magnitudes (from 5 Nm until 60% MVC). G of the triceps brachii was measured using shear wave elastography during each trial. Cross-sectional area (CSA) and muscle thickness (MT) of the triceps brachii were measured at rest. Scaled G was calculated as a product of G and CSA or MT ("G-CSA" and "G-MT", respectively). Within-individual linear regressions were conducted between absolute torque and the three force indicator variables. The regression slopes' coefficient of variation (CV) was calculated for each indicator across individuals. Between-individual correlation coefficients were calculated, after pooling all data across individuals into a single regression analysis for each indicator. Linear regression found that inter-individual slope variation increased in the following order: G-CSA, G-MT, and unscaled G (CV = 0.15, 0.18, and 0.29, respectively). Pooled-individual correlation coefficients were significantly higher in G-CSA and G-MT than in unscaled G (r = 0.948, 0.924, and r = 0.783, respectively). These results suggest that muscle size-scaled G may be more appropriate than unscaled G when comparing shear moduli across individuals.
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Affiliation(s)
- Masahide Yagi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
| | - Hiroshige Tateuchi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Jun Umehara
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan; Research Fellow of Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Yoshiki Motomura
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Tetsuya Hirono
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan; Research Fellow of Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Shusuke Nojiri
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Todd C Pataky
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Noriaki Ichihashi
- Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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20
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Effects of knee flexor submaximal isometric contraction until exhaustion on semitendinosus and biceps femoris long head shear modulus in healthy individuals. Sci Rep 2020; 10:16433. [PMID: 33009453 PMCID: PMC7532170 DOI: 10.1038/s41598-020-73433-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023] Open
Abstract
This study examined whether a knee flexor isometric contraction at 20% of maximal voluntary isometric contraction until exhaustion would alter the biceps femoris long head (BFlh) and semitendinosus (ST) active stiffness, assessed using ultrasound-based shear wave elastography. Twelve healthy individuals participated in 2 sessions separated by 7 days. Time to exhaustion was similar in both sessions (day 1: 443.8 ± 192.5 s; day 2: 474.6 ± 131.7 s; p = 0.323). At the start of the fatigue task, the ST showed greater active stiffness than the BFlh (p < 0.001), with no differences between days (p = 0.08). The ST active stiffness then decreased from 40% of the task time to exhaustion (− 2.2 to − 13.3%, p = 0.027) until the end of the task (− 16.1 to − 22.9%, p = 0.012), while no significant changes were noted in the BFlh (p = 0.771). Immediately after the fatigue task, a decrease in active stiffness was observed in the ST (− 11.8 to − 17.8%, p < 0.001), but not in the BFlh (p = 0.551). Results were consistent between the 2 testing sessions (p = 0.07–0.959). The present results indicate that fatigue alters the hamstring active stiffness pattern.
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Romero-Morales C, Bravo-Aguilar M, Ruiz-Ruiz B, Almazán-Polo J, López-López D, Blanco-Morales M, Téllez-González P, Calvo-Lobo C. Current advances and research in ultrasound imaging to the assessment and management of musculoskeletal disorders. Dis Mon 2020; 67:101050. [PMID: 32711897 DOI: 10.1016/j.disamonth.2020.101050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Currently evidence-based practice has given scientific weight to the physical therapist profession; it is essential that all medical professional and physical therapists know the usefulness of new tools that optimize the effectiveness of their interventions and allow the growing of the scientific knowledge base. The use of ultrasound imaging (USI) by physiotherapists has evolved in recent years, consolidating as an increasingly standardized technique, low cost compared to other imaging techniques, quickly of execution, feasible and reliable tool. USI offers a wide range of opportunities in clinical practice as well as in different research areas. Therefore, ultrasound has been currently used as a diagnostic tool by physicians and in recent years there has been an expansion of the use of ultrasound equipment by non-physicians professionals such as physical therapist or physical trainers, who incorporates USI as a means of assessing musculoskeletal system architecture and composition, musculoskeletal changes in dysfunction, pain or injury conditions, as an interventional technique assisting echo-guided procedures or using the visual real-time information as a biofeedback in control motor approaches, as guiding tool in clinical decisions as well as to improve the understanding of tissue adaptations to exercise or movement. The purpose of this article is to review and provide an overview about the currently research of the USI applications and their benefits for the diagnosis and management in individuals with musculoskeletal conditions.
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Affiliation(s)
- Carlos Romero-Morales
- Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670, Madrid, Spain
| | - María Bravo-Aguilar
- Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670, Madrid, Spain
| | - Beatriz Ruiz-Ruiz
- Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Universidade da Coruña, 15403, Ferrol, Spain
| | - Jaime Almazán-Polo
- Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670, Madrid, Spain
| | - Daniel López-López
- Research, Health and Podiatry Group, Department of Health Sciences, Faculty of Nursing and Podiatry, Universidade da Coruña, 15403, Ferrol, Spain.
| | - María Blanco-Morales
- Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670, Madrid, Spain
| | - Patricia Téllez-González
- Faculty of Sport Sciences, Universidad Europea de Madrid, Villaviciosa de Odón, 28670, Madrid, Spain
| | - César Calvo-Lobo
- Facultad de Enfermería, Fisioterapia y Podología, Universidad Complutense de Madrid, 28040, Madrid, Spain
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22
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Morel B, Hug F, Nordez A, Pournot H, Besson T, Mathevon L, Lapole T. Reduced Active Muscle Stiffness after Intermittent Submaximal Isometric Contractions. Med Sci Sports Exerc 2020; 51:2603-2609. [PMID: 31269006 DOI: 10.1249/mss.0000000000002080] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Whether muscle stiffness is influenced by fatigue remains unclear. Classical methods used to assess muscle stiffness provide a global measure at the joint level. As fatigue may selectively affect specific muscles, a joint-level approach may not be sensitive enough to detect potential changes in muscle stiffness. Taking advantage of ultrasound shear wave elastography, this study aimed to determine the influence of a fatiguing protocol involving intermittent submaximal isometric contractions on muscle shear modulus (an index of stiffness). METHODS Shear modulus was measured on either the vastus lateralis (n = 9) or the abductor digiti minimi (n = 10) before and after 15 min of intermittent submaximal isometric contractions at 60% of maximal voluntary contraction (MVC) (4 s ON, 4 s OFF). An index of active muscle stiffness was estimated PRE- and POST-fatigue as the slope of the linear regression established between shear modulus and absolute joint force up to 60% MVC. RESULTS After the fatiguing exercise, MVC was significantly decreased by 22% ± 7% and 32% ± 15% for knee extension and little finger abduction, respectively (P < 0.001). When compared to PRE-fatigue, the index of active muscle stiffness was 12% ± 15% lower for the vastus lateralis (P < 0.031) and 44% ± 19% lower for the abductor digiti minimi (P < 0.001) POST-fatigue. CONCLUSIONS Although the present results cannot clearly determine the involved mechanisms, they demonstrate a decreased active muscle stiffness after a fatiguing task involving intermittent submaximal isometric contractions. Further studies should now determine whether this change in stiffness affects performance and risk of injury.
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Affiliation(s)
- Baptiste Morel
- University of Saint-Etienne, Inter-university Laboratory of Human Movement Science, University of Lyon, Saint-Etienne, FRANCE.,Laboratory "Movement, Interactions, Performance," Faculty of Sciences and Technologies, Department of Sport Sciences, Le Mans University, Le Mans, FRANCE
| | - François Hug
- Laboratory "Movement, Interactions, Performance," Faculty of Sport Sciences, University of Nantes, Nantes, FRANCE.,Institut Universitaire de France, Paris, FRANCE
| | - Antoine Nordez
- Laboratory "Movement, Interactions, Performance," Faculty of Sport Sciences, University of Nantes, Nantes, FRANCE.,Health and Rehabilitation Research Institute, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, NEW ZEALAND
| | - Hervé Pournot
- University of Saint-Etienne, Inter-university Laboratory of Human Movement Science, University of Lyon, Saint-Etienne, FRANCE
| | - Thibault Besson
- University of Saint-Etienne, Inter-university Laboratory of Human Movement Science, University of Lyon, Saint-Etienne, FRANCE
| | - Laure Mathevon
- University of Saint-Etienne, Inter-university Laboratory of Human Movement Science, University of Lyon, Saint-Etienne, FRANCE
| | - Thomas Lapole
- University of Saint-Etienne, Inter-university Laboratory of Human Movement Science, University of Lyon, Saint-Etienne, FRANCE
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Sheng Z, Sharma N, Kim K. Ultra-High-Frame-Rate Ultrasound Monitoring of Muscle Contractility Changes Due to Neuromuscular Electrical Stimulation. Ann Biomed Eng 2020; 49:262-275. [PMID: 32483747 DOI: 10.1007/s10439-020-02536-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/14/2020] [Indexed: 10/24/2022]
Abstract
The quick onset of muscle fatigue is a critical issue when applying neuromuscular electrical stimulation (NMES) to generate muscle contractions for functional limb movements, which were lost/impaired due to a neurological disorder or an injury. For in situ assessment of the effect of NMES-induced muscle fatigue, a novel noninvasive sensor modality that can quantify the degraded contractility of a targeted muscle is required. In this study, instantaneous strain maps of a contracting muscle were derived from ultra-high-frame-rate (2 kHz) ultrasound images to quantify the contractility. A correlation between strain maps and isometric contraction force values was investigated. When the muscle reached its maximum contraction, the maximum and the mean values of the strain map were correlated with the force values and were further used to stage the contractility change. During the muscle activation period, a novel methodology based on the principal component regression (PCR) was proposed to explore the strain-force correlation. The quadriceps muscle of 3 able-bodied human participants was investigated during NMES-elicited isometric knee extension experiments. Strong to very strong correlation results were obtained and indicate that the proposed measurements from ultrasound images are promising to quantify the muscle contractility changes during NMES.
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Affiliation(s)
- Zhiyu Sheng
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15261, USA
| | - Nitin Sharma
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15261, USA. .,Department of Bioengineering, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15261, USA. .,Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, 27606, USA. .,Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, 15261, USA.
| | - Kang Kim
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15261, USA. .,Department of Bioengineering, University of Pittsburgh School of Engineering, Pittsburgh, PA, 15261, USA. .,Center for Ultrasound Molecular Imaging and Therapeutics, Department of Medicine and Heart and Vascular Institute, University of Pittsburgh School of Medicine and University of Pittsburgh Medical Center, Pittsburgh, PA, 15261, USA. .,McGowan Institute for Regenerative Medicine, University of Pittsburgh and University of Pittsburgh Medical Center, Pittsburgh, PA, 15219, USA.
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Chalchat E, Gennisson JL, Peñailillo L, Oger M, Malgoyre A, Charlot K, Bourrilhon C, Siracusa J, Garcia-Vicencio S. Changes in the Viscoelastic Properties of the Vastus Lateralis Muscle With Fatigue. Front Physiol 2020; 11:307. [PMID: 32390859 PMCID: PMC7194212 DOI: 10.3389/fphys.2020.00307] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/19/2020] [Indexed: 12/31/2022] Open
Abstract
We investigated the in vivo effects of voluntary fatiguing isometric contractions of the knee extensor muscles on the viscoelastic properties of the vastus lateralis (VL). Twelve young males (29.0 ± 4.5 years) performed an intermittent voluntary fatigue protocol consisting of 6 sets × 10 repetitions of 5-s voluntary maximal isometric contractions with 5-s passive recovery periods between repetitions. Voluntary and evoked torque were assessed before, immediately after, and 20 min after exercise. The shear modulus (μ) of the VL muscle was estimated at rest and during a ramped isometric contraction using a conventional elastography technique. An index of active muscle stiffness was then calculated (slope from the relationship between shear modulus and absolute torque). Resting muscle viscosity (η) was quantified using a shear-wave spectroscopy sequence to measure the shear-wave dispersion. Voluntary and evoked torque decreased by ∼37% (P < 0.01) immediately after exercise. The resting VL μ was lower at the end of the fatigue protocol (-57.9 ± 5.4%, P < 0.001), whereas the resting VL η increased (179.0 ± 123%, P < 0.01). The active muscle stiffness index also decreased with fatigue (P < 0.05). By 20 min post-fatigue, there were no significant differences from the pre-exercise values for VL η and the active muscle stiffness index, contrary to the resting VL μ. We show that the VL μ is greatly reduced and η greatly enhanced by fatigue, reflecting a more compliant and viscous muscle. The quantification of both shear μ and η moduli in vivo may contribute to a better understanding of the mechanical behavior of muscles during fatigue in sports medicine, as well as in clinical situations.
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Affiliation(s)
- Emeric Chalchat
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | - Jean-Luc Gennisson
- BIOMAPS, Laboratoire d'Imagerie Biomédicale Multi-Modale, CEA, Université Paris-Saclay, CNRS UMR 9011, INSERM UMR 1281, Orsay, France
| | - Luis Peñailillo
- Exercise Science Laboratory, School of Kinesiology, Faculty of Medicine, Finis Terrae University, Santiago, Chile
| | - Myriam Oger
- Unité Imagerie, Département des Plateformes et Recherche Technologique, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | - Alexandra Malgoyre
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France.,LBEPS, Univ Evry, IRBA, Université Paris Saclay, Evry, France
| | - Keyne Charlot
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France.,LBEPS, Univ Evry, IRBA, Université Paris Saclay, Evry, France
| | - Cyprien Bourrilhon
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France.,LBEPS, Univ Evry, IRBA, Université Paris Saclay, Evry, France
| | - Julien Siracusa
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France.,LBEPS, Univ Evry, IRBA, Université Paris Saclay, Evry, France
| | - Sebastian Garcia-Vicencio
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France.,LBEPS, Univ Evry, IRBA, Université Paris Saclay, Evry, France
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Mottram S, Blandford L. Assessment of movement coordination strategies to inform health of movement and guide retraining interventions. Musculoskelet Sci Pract 2020; 45:102100. [PMID: 32056825 DOI: 10.1016/j.msksp.2019.102100] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/23/2019] [Accepted: 12/06/2019] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Exploring characteristics of human movement has long been the focus of clinicians and researchers. Changes in movement coordination strategies have been identified in the presence of pain highlighting the need for assessment in clinical practice. A major development in the understanding of movement related disorders is recognition of individual differences in presentation and consequently the need to tailor interventions based on assessment. PURPOSE The purpose of this masterclass is to build a rationale for the clinical assessment of movement coordination strategies, exploring loss of movement choices, coordination variability, and to present a clinical framework for individualised management, including the use of cognitive movement control tests and retraining interventions. An approach for the qualitative rating of movement coordination strategies is presented. A compromised movement system may be one characterised by a lack of ability to access motor abundance and display choice in the use of movement coordination strategies. The identification of lost movement choices revealed during the assessment of movement coordination strategies is proposed as a marker of movement health. IMPLICATIONS FOR PRACTICE The health of the movement system may be informed by the ability to display choice in movement coordination strategies. There is evidence that restoring these choices has clinical utility and an influence on pain and improved function. This approach seeks to provide individuals with more flexible problem solving, enabled through a movement system that is robust to each unique challenge of function. This assessment framework sits within a bigger clinical reasoning picture for sustained quality of life.
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Affiliation(s)
- Sarah Mottram
- School of Health Sciences, Building 67, University of Southampton, Southampton, SO17 1BJ, UK; Centre for Sport, Exercise and Osteoarthritis Research Versus Arthritis, Queen's Medical Centre, Nottingham, NG7 2UH, UK; Comera Movement Science Ltd, The Quorum, Bond Street South, Bristol, BS1 3AE, UK.
| | - Lincoln Blandford
- Comera Movement Science Ltd, The Quorum, Bond Street South, Bristol, BS1 3AE, UK; School of Sport, Health, and Applied Sciences, St Mary's University, Twickenham, TW1 4SX, UK.
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26
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Cè E, Longo S, Limonta E, Coratella G, Rampichini S, Esposito F. Peripheral fatigue: new mechanistic insights from recent technologies. Eur J Appl Physiol 2019; 120:17-39. [DOI: 10.1007/s00421-019-04264-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022]
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27
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Akagi R, Sato S, Yoshihara K, Ishimatsu H, Ema R. Sex difference in fatigability of knee extensor muscles during sustained low-level contractions. Sci Rep 2019; 9:16718. [PMID: 31723215 PMCID: PMC6853909 DOI: 10.1038/s41598-019-53375-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 10/31/2019] [Indexed: 11/29/2022] Open
Abstract
This study investigated whether the sex difference in fatigability of the knee extensors (KE) is explained by the sex difference in fatigue-induced changes in the shear modulus of one or more muscles of KE in 18 young men and 23 young women. The shear moduli of the resting rectus femoris and medial and lateral vastus muscles (VL) were measured before and after a sustained contraction at 20% peak torque during a maximal voluntary isometric contraction of KE until the endurance limit, in addition to evoked torque and voluntary activation (VA%). The fatigue-induced decrease in maximal muscle strength was more prominent in men than in women. Only the VL shear modulus for men increased after the fatiguing task, and a sex difference was observed in the percentage change in the VL shear modulus before and after the fatiguing task. The fatigue-induced decreased ratio was greater for men than for women in evoked torque, but not in VA%. These results suggest that although peripheral and central fatigue both influenced the fatigue-induced decrease in maximal muscle strength regardless of sex, the sex difference in KE fatigability is explained by that in peripheral fatigue, particularly the degree of peripheral VL fatigue.
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Affiliation(s)
- Ryota Akagi
- College of Systems Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan. .,Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan. .,QOL Improvement and Life Science Consortium, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan.
| | - Shinya Sato
- Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
| | - Kana Yoshihara
- College of Systems Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
| | - Hideki Ishimatsu
- College of Systems Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma-ku, Saitama-shi, Saitama, 337-8570, Japan
| | - Ryoichi Ema
- School of Management, Shizuoka Sangyo University, 1572-1 Owara, Iwata-shi, Shizuoka, 438-0043, Japan
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Differences in Linea Alba Stiffness and Linea Alba Distortion Between Women With and Without Diastasis Recti Abdominis: The Impact of Measurement Site and Task. J Orthop Sports Phys Ther 2019; 49:656-665. [PMID: 30913968 DOI: 10.2519/jospt.2019.8543] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND The biomechanical implications of diastasis recti abdominis (DRA) are unknown. OBJECTIVES To (1) investigate the impact of DRA, measurement site, and task on inter-rectus distance (IRD), linea alba (LA) stiffness, and LA distortion measured at rest and during head-lift and semi-curl-up tasks; and (2) describe the relationships among IRD, LA stiffness, and LA distortion. METHODS In this cross-sectional, observational cohort study, brightness-mode ultrasound imaging and shearwave elastography were used on a sample of 20 women. Inter-rectus distance, LA stiffness, and LA distortion were measured at 3 locations, while at rest and during head-lift and semi-curl-up maneuvers. All outcomes were compared between groups (DRA versus no DRA), sites, and tasks. Linear regression models were used to evaluate the relationships among IRD, mean and peak LA stiffness, and LA distortion. RESULTS Eleven women with and 9 without DRA participated. Women with DRA demonstrated lower peak and mean LA stiffness and higher LA distortion compared to women without DRA. In women with DRA, IRD and LA distortion were not influenced by measurement site; IRD decreased, LA distortion increased, and LA stiffness did not change during the head lift and semi-curl-up compared to rest. In women without DRA, the LA was least stiff closest to the umbilicus; it increased in stiffness during the head lift and semi-curl-up and did not distort or change compared to rest. CONCLUSION Diastasis recti abdominis was associated with low LA stiffness and with LA distortion during a semi-curl-up task; the amount of distortion was a function of IRD and LA stiffness. J Orthop Sports Phys Ther 2019;49(9):656-665. Epub 26 Mar 2019. doi:10.2519/jospt.2019.8543.
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Siracusa J, Charlot K, Malgoyre A, Conort S, Tardo-Dino PE, Bourrilhon C, Garcia-Vicencio S. Resting Muscle Shear Modulus Measured With Ultrasound Shear-Wave Elastography as an Alternative Tool to Assess Muscle Fatigue in Humans. Front Physiol 2019; 10:626. [PMID: 31178757 PMCID: PMC6537456 DOI: 10.3389/fphys.2019.00626] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/02/2019] [Indexed: 12/31/2022] Open
Abstract
The aim of this study was to investigate the time course of the resting vastus lateralis (VL) muscle shear elastic modulus (μ) measured with ultrasound shear-wave elastography during repetition of isometric maximal voluntary contractions (MVCs) of the knee extensors (KE). Fifteen well-trained young males repeated 60 5-s isometric MVCs. Evoked electrical stimulations and the VLμ were measured every ten MVCs at rest. The resting VLμ significantly decreased (−34.7 ± 6.7%; P < 0.001) by the end of the fatigue protocol. There was also a 38.4 ± 12.6 % decrease in MVC after exercise (P < 0.001). The potentiated doublet and single twitch torque amplitudes and properties were significantly modified by the end of exercise (P < 0.001). This study shows the time course of the resting VLμ during the repetition of maximal voluntary fatiguing exercise of the KE muscles. The decrease of the resting VLμ could directly affect the force transmission capabilities accounting for peripheral fatigue.
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Affiliation(s)
- Julien Siracusa
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | - Keyne Charlot
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | - Alexandra Malgoyre
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | | | - Pierre-Emmanuel Tardo-Dino
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | - Cyprien Bourrilhon
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
| | - Sebastian Garcia-Vicencio
- Unité de Physiologie de l'Exercice et des Activités en Conditions Extrêmes, Département Environnements Opérationnels, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France
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30
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Miyamoto N, Hirata K. Muscle elasticity under active conditions in humans: A methodological comparison. TRANSLATIONAL SPORTS MEDICINE 2019. [DOI: 10.1002/tsm2.68] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Naokazu Miyamoto
- Faculty of Health and Sports Science Juntendo University Chiba Japan
| | - Kosuke Hirata
- Graduate School of Engineering and Science Shibaura Institute of Technology Saitama Japan
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Lima K, Rouffaud R, Pereira W, Oliveira LF. Supersonic Shear Imaging Elastography in Skeletal Muscles: Relationship Between In Vivo and Synthetic Fiber Angles and Shear Modulus. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2019; 38:81-90. [PMID: 29708284 DOI: 10.1002/jum.14664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/11/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To verify a relationship between the pennation angle of synthetic fibers and muscle fibers with the shear modulus (μ) generated by Supersonic shear imaging (SSI) elastography and to compare the anisotropy of synthetic and in vivo pennate muscle fibers in the x2 -x3 plane (probe perpendicular to water surface or skin). METHODS First, the probe of Aixplorer ultrasound scanner (v.9, Supersonic Imagine, Aix-en-Provence, France) was placed in 2 positions (parallel [aligned] and transverse to the fibers) to test the anisotropy in the x2 -x3 plane. Subsequently, it was inclined (x1 -x3 plane) in relation to the fibers, forming 3 angles (18.25 °, 21.55 °, 36.86 °) for synthetic fibers and one (approximately 0 °) for muscle fibers. RESULTS On the x2 -x3 plane, μ values of the synthetic and vastus lateralis fibers were significantly lower (P < .0001) at the transverse probe position than the longitudinal one. In the x1 -x3 plane, the μ values were significantly reduced (P < .0001) with the probe angle increasing, only for the synthetic fibers (approximately 0.90 kPa for each degree of pennation angle). CONCLUSIONS The pennation angle was not related to the μ values generated by SSI elastography for the in vivo lateral head of the gastrocnemius and vastus lateralis muscles. However, a μ reduction with an angle increase in the synthetic fibers was observed. These findings contribute to increasing the applicability of SSI in distinct muscle architecture at normal or pathologic conditions.
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Affiliation(s)
- Kelly Lima
- Laboratory of Biomechanics of the Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Ultrasound of the Biomedical Engineering Program , Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Remi Rouffaud
- Laboratory of Biomechanics of the Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratory of Ultrasound of the Biomedical Engineering Program , Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Wagner Pereira
- Laboratory of Ultrasound of the Biomedical Engineering Program , Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Liliam F Oliveira
- Laboratory of Biomechanics of the Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Chino K, Takahashi H. Influence of pennation angle on measurement of shear wave elastography: in vivo observation of shear wave propagation in human pennate muscle. Physiol Meas 2018; 39:115003. [DOI: 10.1088/1361-6579/aae7e2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Hamstring stiffness pattern during contraction in healthy individuals: analysis by ultrasound-based shear wave elastography. Eur J Appl Physiol 2018; 118:2403-2415. [DOI: 10.1007/s00421-018-3967-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/06/2018] [Indexed: 11/25/2022]
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BRØCHNER NIELSEN NIELSPETER, HUG FRANÇOIS, GUÉVEL ARNAUD, COLLOUD FLOREN, LARDY JULIEN, DOREL SYLVAIN. Changes in Motor Coordination Induced by Local Fatigue during a Sprint Cycling Task. Med Sci Sports Exerc 2018; 50:1394-1404. [DOI: 10.1249/mss.0000000000001572] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Blandford L, McNeill W, Charvet I. Can we spread the risk? A demand-share perspective to sustained hamstring health. J Bodyw Mov Ther 2018; 22:766-779. [PMID: 30100311 DOI: 10.1016/j.jbmt.2018.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Lincoln Blandford
- Movement Performance Solutions Ltd, The Quorum, Bond Street South, Bristol, BS1 3AE, UK.
| | | | - Ingrid Charvet
- Department of Civil, Environmental & Geomatic Engineering, University College London, WC1E 6BT, UK.
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WITHDRAWN: Can we spread the risk? A demand-share perspective to sustained hamstring health. Biomaterials 2018. [DOI: 10.1016/j.biomaterials.2018.06.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Creze M, Nordez A, Soubeyrand M, Rocher L, Maître X, Bellin MF. Shear wave sonoelastography of skeletal muscle: basic principles, biomechanical concepts, clinical applications, and future perspectives. Skeletal Radiol 2018; 47:457-471. [PMID: 29224123 DOI: 10.1007/s00256-017-2843-y] [Citation(s) in RCA: 135] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 11/20/2017] [Accepted: 11/30/2017] [Indexed: 02/02/2023]
Abstract
Imaging plays an important role in the diagnosis and therapeutic response evaluation of muscular diseases. However, one important limitation is its incapacity to assess the in vivo biomechanical properties of the muscles. The emerging shear wave sonoelastography technique offers a quantifiable spatial representation of the viscoelastic characteristics of skeletal muscle. Elastography is a non-invasive tool used to analyze the physiologic and biomechanical properties of muscles in healthy and pathologic conditions. However, radiologists need to familiarize themselves with the muscular biomechanical concepts and technical challenges of shear wave elastography. This review introduces the basic principles of muscle shear wave elastography, analyzes the factors that can influence measurements and provides an overview of its potential clinical applications in the field of muscular diseases.
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Affiliation(s)
- Maud Creze
- Radiology Department, Bicêtre Hospital, APHP, Le Kremlin-Bicetre, France. .,Laboratory Complexité, Innovations, Activités Motrices et Sportives, CIAMS (EA4532), University Paris-Sud, Université Paris-Saclay, Orsay, France. .,Imagerie par Résonance Magnétique Médicale et Multi-Modalités, IR4M, CNRS, Univ Paris-Sud, Université Paris-Saclay, Orsay, France. .,Service de Radiologie, CHU de Bicêtre, Le Kremlin-Bicetre, France.
| | - Antoine Nordez
- Laboratory "Movement, Interactions, Performance" (EA 4334), Faculty of Sport Sciences, University of Nantes, Nantes Cedex 3, France
| | - Marc Soubeyrand
- Orthopedic Department, Bicêtre Hospital, APHP, Le Kremlin-Bicetre, France
| | - Laurence Rocher
- Radiology Department, Bicêtre Hospital, APHP, Le Kremlin-Bicetre, France.,Imagerie par Résonance Magnétique Médicale et Multi-Modalités, IR4M, CNRS, Univ Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Xavier Maître
- Imagerie par Résonance Magnétique Médicale et Multi-Modalités, IR4M, CNRS, Univ Paris-Sud, Université Paris-Saclay, Orsay, France
| | - Marie-France Bellin
- Radiology Department, Bicêtre Hospital, APHP, Le Kremlin-Bicetre, France.,Imagerie par Résonance Magnétique Médicale et Multi-Modalités, IR4M, CNRS, Univ Paris-Sud, Université Paris-Saclay, Orsay, France
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Kawczyński A, Mroczek D, Andersen RE, Stefaniak T, Arendt-Nielsen L, Madeleine P. Trapezius viscoelastic properties are heterogeneously affected by eccentric exercise. J Sci Med Sport 2018; 21:864-869. [PMID: 29395631 DOI: 10.1016/j.jsams.2018.01.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 01/06/2018] [Accepted: 01/10/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVES The aim of this study was to investigate the influence of eccentric exercise (ECC) on the spatial mapping of muscle stiffness and creep of the upper trapezius, using a quantitative myotonometry device. DESIGN Two groups of 16 subjects participated in the experimental sessions. In part A, the test-retest reliabilities of muscle stiffness and creep were assessed. In part B, muscle stiffness and muscle creep were mapped before, immediately after and 24h after ECC when post-exercise soreness had developed. METHODS The ECC protocol consisted of 50 eccentric contractions divided into 5 bouts of 10 contractions at maximum force level. RESULTS The relative reliabilities of stiffness and creep measurements were found to be substantial to almost perfect. Muscle stiffness for musculotendinous sites increased at 24h after ECC while it decreased for muscle belly immediately after and 24h after ECC. Muscle creep for musculotendinous sites decreased, and for muscle belly sites increased, immediately after and 24h after ECC. CONCLUSIONS For the first time, the present study showed sign of discrepancies in the effects of ECC on muscle stiffness and creep, underlining opposite changes in the musculotendinous and muscle belly viscoelastic properties of upper trapezius.
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Affiliation(s)
- Adam Kawczyński
- Department of Paralympics Sports, University School of Physical Education, Poland.
| | - Dariusz Mroczek
- Department of Athletes Motor Skills, University School of Physical Education, Poland
| | - Rasmus Elbæk Andersen
- Physical Activity and Human Performance Group-SMI, Department of Health Science and Technology, Aalborg University, Denmark
| | - Tadeusz Stefaniak
- Department of Sport Didactics, University School of Physical Education, Poland
| | - Lars Arendt-Nielsen
- The Faculty of Medicine, Department of Health Science and Technology, SMI, Aalborg University, Denmark
| | - Pascal Madeleine
- Physical Activity and Human Performance Group-SMI, Department of Health Science and Technology, Aalborg University, Denmark
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Lacourpaille L, Nordez A, Hug F. The nervous system does not compensate for an acute change in the balance of passive force between synergist muscles. ACTA ACUST UNITED AC 2017; 220:3455-3463. [PMID: 28751493 DOI: 10.1242/jeb.163303] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/20/2017] [Indexed: 11/20/2022]
Abstract
It is unclear how muscle activation strategies adapt to differential acute changes in the biomechanical characteristics between synergist muscles. This issue is fundamental to understanding the control of almost every joint in the body. The aim of this human experiment was to determine whether the relative activation of the heads of the triceps surae [gastrocnemius medialis (GM), gastrocnemius lateralis (GL) and soleus (SOL)] compensates for differential changes in passive force between these muscles. Twenty-four participants performed isometric ankle plantarflexion at 20 N m and 20% of the active torque measured during a maximal contraction, at three ankle angles (30 deg of plantarflexion, 0 and 25 deg of dorsiflexion; knee fully extended). Myoelectric activity (electromyography, EMG) provided an index of neural drive. Muscle shear modulus (elastography) provided an index of muscle force. Passive dorsiflexion induced a much larger increase in passive shear modulus for GM (+657.6±257.7%) than for GL (+488.7±257.9%) and SOL (+106.6±93.0%). However, the neural drive during submaximal tasks did not compensate for this change in the balance of the passive force. Instead, when considering the contraction at 20% MVC, GL root mean square (RMS) EMG was reduced at both 0 deg (-39.4±34.5%) and 25 deg dorsiflexion (-20.6±58.6%) compared with 30 deg plantarflexion, while GM and SOL RMS EMG did not change. As a result, the GM/GL ratio of shear modulus was higher at 0 deg and 25 deg dorsiflexion than at 30 deg plantarflexion, indicating that the greater the dorsiflexion angle, the stronger the bias of force to GM compared with GL. The magnitude of this change in force balance varied greatly between participants.
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Affiliation(s)
- Lilian Lacourpaille
- University of Nantes, Laboratory "Movement, Interactions, Performance" (EA 4334), Faculty of Sport Sciences, 44000 Nantes, France
| | - Antoine Nordez
- University of Nantes, Laboratory "Movement, Interactions, Performance" (EA 4334), Faculty of Sport Sciences, 44000 Nantes, France.,Health and Rehabilitation Research Institute, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 0627, New Zealand
| | - François Hug
- University of Nantes, Laboratory "Movement, Interactions, Performance" (EA 4334), Faculty of Sport Sciences, 44000 Nantes, France .,The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, QLD 4072, Australia.,Institut Universitaire de France (IUF), 75231 Paris, France
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Lima KMME, Costa Júnior JFS, Pereira WCDA, Oliveira LFD. Assessment of the mechanical properties of the muscle-tendon unit by supersonic shear wave imaging elastography: a review. Ultrasonography 2017; 37:3-15. [PMID: 28607322 PMCID: PMC5769952 DOI: 10.14366/usg.17017] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/15/2017] [Accepted: 04/15/2017] [Indexed: 12/25/2022] Open
Abstract
This review aimed to describe the state of the art in muscle-tendon unit (MTU) assessment by supersonic shear wave imaging (SSI) elastography in states of muscle contraction and stretching, during aging, and in response to injury and therapeutic interventions. A consensus exists that MTU elasticity increases during passive stretching or contraction, and decreases after static stretching, electrostimulation, massage, and dry needling. There is currently no agreement regarding changes in the MTU due to aging and injury. Currently, the application of SSI for the purpose of diagnosis, rehabilitation, and physical training remains limited by a number of issues, including the lack of normative value ranges, the lack of consensus regarding the appropriate terminology, and an inadequate understanding of the main technical limitations of this novel technology.
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Affiliation(s)
- Kelly Mônica Marinho E Lima
- Laboratory of Biomechanics of the Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | - Liliam Fernandes de Oliveira
- Laboratory of Biomechanics of the Biomedical Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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41
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Xu L, Fan S, Cai B, Fang Z, Jiang X. Influence of sustained submaximal clenching fatigue test on electromyographic activity and maximum voluntary bite forces in healthy subjects and patients with temporomandibular disorders. J Oral Rehabil 2017; 44:340-346. [PMID: 28244122 DOI: 10.1111/joor.12497] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/23/2017] [Indexed: 11/30/2022]
Affiliation(s)
- L. Xu
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - S. Fan
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - B. Cai
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - Z. Fang
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - X. Jiang
- Department of Rehabilitation Medicine; Shanghai Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
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Brøchner Nielsen NP, Hug F, Guével A, Fohanno V, Lardy J, Dorel S. Motor adaptations to unilateral quadriceps fatigue during a bilateral pedaling task. Scand J Med Sci Sports 2016; 27:1724-1738. [PMID: 28000312 DOI: 10.1111/sms.12811] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2016] [Indexed: 11/30/2022]
Abstract
This study was designed to investigate how motor coordination adapts to unilateral fatigue of the quadriceps during a constant-load bilateral pedaling task. We first hypothesized that this local fatigue would not be compensated within the fatigued muscles leading to a decreased knee extension power. Then, we aimed to determine whether this decrease would be compensated by between-joints compensations within the ipsilateral leg and/or an increased contribution of the contralateral leg. Fifteen healthy volunteers were tested during pedaling at 350 W before and after a fatigue protocol consisting of 15 minutes of electromyostimulation on the quadriceps muscle. Motor coordination was assessed from myoelectrical activity (22 muscles) and joint powers calculated through inverse dynamics. Maximal knee extension torque decreased by 28.3%±6.8% (P<.0005) immediately after electromyostimulation. A decreased knee extension power produced by the ipsilateral leg was observed during pedaling (-22.8±12.3 W, -17.0%±9.4%; P<.0005). To maintain the task goal, participants primarily increased the power produced by the non-fatigued contralateral leg during the flexion phase. This was achieved by an increase in hip flexion power confirmed by a higher activation of the tensor fascia latae. These results suggest no adjustment of neural drive to the fatigued muscles and demonstrate no concurrent ipsilateral compensation by the non-fatigued muscles involved in the extension pedaling phase. Although interindividual variability was observed, findings provide evidence that participants predominantly adapted by compensating with the contralateral leg during its flexion phase. Both neural (between legs) and mechanical (between pedals) couplings and the minimization of cost functions might explain these results.
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Affiliation(s)
- N-P Brøchner Nielsen
- Laboratory "Movement, Interactions, Performance" (EA4334), Faculty of Sport Sciences, University of Nantes, Nantes, France
| | - F Hug
- Laboratory "Movement, Interactions, Performance" (EA4334), Faculty of Sport Sciences, University of Nantes, Nantes, France.,School of Health and Rehabilitation Sciences, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, The University of Queensland, Brisbane, Qld, Australia
| | - A Guével
- Laboratory "Movement, Interactions, Performance" (EA4334), Faculty of Sport Sciences, University of Nantes, Nantes, France
| | - V Fohanno
- Laboratory "Movement, Interactions, Performance" (EA4334), Faculty of Sport Sciences, University of Nantes, Nantes, France
| | - J Lardy
- Laboratory "Movement, Interactions, Performance" (EA4334), Faculty of Sport Sciences, University of Nantes, Nantes, France
| | - S Dorel
- Laboratory "Movement, Interactions, Performance" (EA4334), Faculty of Sport Sciences, University of Nantes, Nantes, France
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Milioni F, Vieira LHP, Barbieri RA, Zagatto AM, Nordsborg NB, Barbieri FA, Dos-Santos JW, Santiago PRP, Papoti M. Futsal Match-Related Fatigue Affects Running Performance and Neuromuscular Parameters but Not Finishing Kick Speed or Accuracy. Front Physiol 2016; 7:518. [PMID: 27872598 PMCID: PMC5097919 DOI: 10.3389/fphys.2016.00518] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 10/20/2016] [Indexed: 01/25/2023] Open
Abstract
Purpose: The aim of the present study was to investigate the influence of futsal match-related fatigue on running performance, neuromuscular variables, and finishing kick speed and accuracy. Methods: Ten professional futsal players participated in the study (age: 22.2 ± 2.5 years) and initially performed an incremental protocol to determine maximum oxygen uptake (V˙O2max: 50.6 ± 4.9 mL.kg−1.min−1). Next, simulated games were performed, in four periods of 10 min during which heart rate and blood lactate concentration were monitored. The entire games were video recorded for subsequent automatic tracking. Before and immediately after the simulated game, neuromuscular function was measured by maximal isometric force of knee extension, voluntary activation using twitch interpolation technique, and electromyographic activity. Before, at half time, and immediately after the simulated game, the athletes also performed a set of finishing kicks for ball speed and accuracy measurements. Results: Total distance covered (1st half: 1986.6 ± 74.4 m; 2nd half: 1856.0 ± 129.7 m, P = 0.00) and distance covered per minute (1st half: 103.2 ± 4.4 m.min−1; 2nd half: 96.4 ± 7.5 m.min−1, P = 0.00) demonstrated significant declines during the simulated game, as well as maximal isometric force of knee extension (Before: 840.2 ± 66.2 N; After: 751.6 ± 114.3 N, P = 0.04) and voluntary activation (Before: 85.9 ± 7.5%; After: 74.1 ± 12.3%, P = 0.04), however ball speed and accuracy during the finishing kicks were not significantly affected. Conclusion: Therefore, we conclude that despite the decline in running performance and neuromuscular variables presenting an important manifestation of central fatigue, this condition apparently does not affect the speed and accuracy of finishing kicks.
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Affiliation(s)
- Fabio Milioni
- Post Graduate Program in Movement Science, Department of Physical Education, UNESP - Univ Estadual Paulista Rio Claro, Brazil
| | - Luiz H P Vieira
- School of Physical Education and Sports of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil; Post Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Ricardo A Barbieri
- Post Graduate Program in Movement Science, Department of Physical Education, UNESP - Univ Estadual Paulista Rio Claro, Brazil
| | - Alessandro M Zagatto
- Post Graduate Program in Movement Science, Department of Physical Education, UNESP - Univ Estadual PaulistaRio Claro, Brazil; Department of Physical Education, UNESP - Univ Estadual PaulistaBauru, Brazil
| | - Nikolai B Nordsborg
- Department of Nutrition, Exercise and Sport, University of Copenhagen Copenhagen, Denmark
| | - Fabio A Barbieri
- Post Graduate Program in Movement Science, Department of Physical Education, UNESP - Univ Estadual PaulistaRio Claro, Brazil; Department of Physical Education, UNESP - Univ Estadual PaulistaBauru, Brazil
| | - Júlio W Dos-Santos
- Post Graduate Program in Movement Science, Department of Physical Education, UNESP - Univ Estadual PaulistaRio Claro, Brazil; Department of Physical Education, UNESP - Univ Estadual PaulistaBauru, Brazil
| | - Paulo R P Santiago
- School of Physical Education and Sports of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil; Post Graduate Program in Rehabilitation and Functional Performance, Faculty of Medicine at Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
| | - Marcelo Papoti
- Post Graduate Program in Movement Science, Department of Physical Education, UNESP - Univ Estadual PaulistaRio Claro, Brazil; School of Physical Education and Sports of Ribeirão Preto, University of São PauloRibeirão Preto, Brazil
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Smith CM, Housh TJ, Herda TJ, Zuniga JM, Camic CL, Bergstrom HC, Smith DB, Weir JP, Hill EC, Cochrane KC, Jenkins NDM, Schmidt RJ, Johnson GO. Time Course of Changes in Neuromuscular Parameters During Sustained Isometric Muscle Actions. J Strength Cond Res 2016; 30:2697-2702. [PMID: 27658233 DOI: 10.1519/jsc.0000000000001547] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Smith, CM, Housh, TJ, Herda, TJ, Zuniga, JM, Camic, CL, Bergstrom, HC, Smith, DB, Weir, JP, Hill, EC, Cochrane, KC, Jenkins, NDM, Schmidt, RJ, and Johnson, GO. Time course of changes in neuromuscular parameters during sustained isometric muscle actions. J Strength Cond Res 30(10): 2697-2702, 2016-The objective of the present study was to identify the time course of changes in electromyographic (EMG) and mechanomyographic (MMG) time and frequency domain parameters during a sustained isometric muscle action of the leg extensors at 50% maximal voluntary isometric contraction. The EMG and MMG signals were measured from the vastus lateralis of 11 subjects to identify when motor unit activation strategies changed throughout the sustained isometric muscle action. The EMG amplitude (muscle activation) had a positive linear relationship (p = 0.018, r = 0.77) that began to increase at the initiation of the muscle action and continued until task failure. Electromyographic frequency (motor unit action potential conduction velocity) and MMG frequency (global motor unit firing rate) had negative quadratic relationships (p = 0.002, R = 0.99; p = 0.015, R = 0.94) that began to decrease at 30% of the time to exhaustion. The MMG amplitude (motor unit activation) had a cubic relationship (p = 0.001, R = 0.94) that increased from 10 to 30% of the time to exhaustion, then decreased from 40 to 70% of the time to exhaustion, and then markedly increased from 70% to task failure. The time course of changes in the neuromuscular parameters suggested that motor unit activation strategies changed at approximately 30 and 70% of the time to exhaustion during the sustained isometric muscle action. These findings indicate that the time course of changes in neuromuscular responses provide insight into the strategies used to delay the effects of fatigue and are valuable tools for quantifying changes in the fatiguing process during training programs or supplementation research.
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Affiliation(s)
- Cory M Smith
- 1Department of Nutrition and Health Science, University of Nebraska-Lincoln, Lincoln, Nebraska;2Department of Health, Sport, and Exercise Sciences, University of Kansas, Lawrence, Kansas;3Department of Exercise Science & Pre-Health Professions, Creighton University, Omaha, Nebraska;4Department of Exercise & Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin;5Department of Kinesiology & Health Promotion, University of Kentucky, Lexington, Kentucky; and6Department of Health and Human Performance, Oklahoma State University-Stillwater, Stillwater, Oklahoma
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45
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Hug F, Goupille C, Baum D, Raiteri BJ, Hodges PW, Tucker K. Nature of the coupling between neural drive and force-generating capacity in the human quadriceps muscle. Proc Biol Sci 2016; 282:rspb.2015.1908. [PMID: 26609085 DOI: 10.1098/rspb.2015.1908] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The force produced by a muscle depends on both the neural drive it receives and several biomechanical factors. When multiple muscles act on a single joint, the nature of the relationship between the neural drive and force-generating capacity of the synergistic muscles is largely unknown. This study aimed to determine the relationship between the ratio of neural drive and the ratio of muscle force-generating capacity between two synergist muscles (vastus lateralis (VL) and vastus medialis (VM)) in humans. Twenty-one participants performed isometric knee extensions at 20 and 50% of maximal voluntary contractions (MVC). Myoelectric activity (surface electromyography (EMG)) provided an index of neural drive. Physiological cross-sectional area (PCSA) was estimated from measurements of muscle volume (magnetic resonance imaging) and muscle fascicle length (three-dimensional ultrasound imaging) to represent the muscles' force-generating capacities. Neither PCSA nor neural drive was balanced between VL and VM. There was a large (r = 0.68) and moderate (r = 0.43) correlation between the ratio of VL/VM EMG amplitude and the ratio of VL/VM PCSA at 20 and 50% of MVC, respectively. This study provides evidence that neural drive is biased by muscle force-generating capacity, the greater the force-generating capacity of VL compared with VM, the stronger bias of drive to the VL.
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Affiliation(s)
- François Hug
- School of Health and Rehabilitation Sciences, The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, Brisbane, Australia Laboratory EA 4334 'Movement, Interactions, Performance', University of Nantes, Nantes, France
| | - Clément Goupille
- Laboratory EA 4334 'Movement, Interactions, Performance', University of Nantes, Nantes, France
| | - Daniel Baum
- School of Biomedical Sciences, The University of Queensland, Brisbane, Australia, and
| | - Brent J Raiteri
- School of Human Movement and Nutrition Sciences, Centre for Sensorimotor Performance, The University of Queensland, Brisbane, Australia
| | - Paul W Hodges
- School of Health and Rehabilitation Sciences, The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, Brisbane, Australia
| | - Kylie Tucker
- School of Health and Rehabilitation Sciences, The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, Brisbane, Australia School of Biomedical Sciences, The University of Queensland, Brisbane, Australia, and
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Shear-Wave Elastography Assessments of Quadriceps Stiffness Changes prior to, during and after Prolonged Exercise: A Longitudinal Study during an Extreme Mountain Ultra-Marathon. PLoS One 2016; 11:e0161855. [PMID: 27579699 PMCID: PMC5007013 DOI: 10.1371/journal.pone.0161855] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 08/13/2016] [Indexed: 12/12/2022] Open
Abstract
In sports medicine, there is increasing interest in quantifying the elastic properties of skeletal muscle, especially during extreme muscular stimulation, to improve our understanding of the impact of alterations in skeletal muscle stiffness on resulting pain or injuries, as well as the mechanisms underlying the relationships between these parameters. Our main objective was to determine whether real-time shear-wave elastography (SWE) can monitor changes in quadriceps muscle elasticity during an extreme mountain ultra-marathon, a powerful mechanical stress model. Our study involved 50 volunteers participating in an extreme mountain marathon (distance: 330 km, elevation: +24,000 m). Quantitative SWE velocity and shear modulus measurements were performed in most superficial quadriceps muscle heads at the following 4 time points: before the race, halfway through the race, upon finishing the race and after recovery (+48 h). Blood biomarker levels were also measured. A significant decrease in the quadriceps shear modulus was observed upon finishing the race (3.31±0.61 kPa) (p<0.001) compared to baseline (3.56±0.63 kPa), followed by a partial recovery +48 h after the race (3.45±0.6 kPa) (p = 0.002) across all muscle heads, as well as for each of the following three muscle heads: the rectus femoris (p = 0.003), the vastus medialis (p = 0.033) and the vastus lateralis (p = 0.001). Our study is the first to assess changes in muscle stiffness during prolonged extreme physical endurance exercises based on shear modulus measurements using non-invasive SWE. We concluded that decreases in stiffness, which may have resulted from quadriceps overuse in the setting of supra-physiological stress caused by the extreme distance and unique elevation of the race, may have been responsible for the development of inflammation and muscle swelling. SWE may hence represent a promising tool for monitoring physiologic or pathological variations in muscle stiffness and may be useful for diagnosing and monitoring muscle changes.
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MacDonald D, Wan A, McPhee M, Tucker K, Hug F. Reliability of Abdominal Muscle Stiffness Measured Using Elastography during Trunk Rehabilitation Exercises. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:1018-1025. [PMID: 26746381 DOI: 10.1016/j.ultrasmedbio.2015.12.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Revised: 10/29/2015] [Accepted: 12/07/2015] [Indexed: 06/05/2023]
Abstract
The aim of this study was to assess the intra-session and inter-rater reliability of shear modulus measured in abdominal muscles during two commonly used trunk stability exercises. Thirty healthy volunteers performed a series of abdominal hollow and abdominal brace tasks. Supersonic shear imaging was used to measure the shear modulus (considered an index of muscle tension) of the four anterior trunk muscles: obliquus externus abdominis, obliquus internus abdominis, transversus abdominis and rectus abdominis. Because of measurement artifacts, internus abdominis and transversus abdominis data were not analyzed for 36.7% and 26.7% of the participants, respectively. These participants exhibited thicker superficial fat layers than the others. For the remaining participants, fair to excellent intra-session and inter-rater reliability was observed with moderate to high intra-class coefficients (0.45-0.97) and low to moderate standard error of measurement values (0.38-3.53 kPa). Reliability values were consistently greater for superficial than for deeper muscles.
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Affiliation(s)
- David MacDonald
- School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, QLD, Australia
| | - Alan Wan
- School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, QLD, Australia
| | - Megan McPhee
- School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, QLD, Australia
| | - Kylie Tucker
- School of Biomedical Sciences, University of Queensland, Brisbane, QLD, Australia
| | - François Hug
- School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, QLD, Australia; Laboratory "Movement, Interactions, Performance" (EA 4334), UFR STAPS, University of Nantes, Nantes, France.
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Costes A, Villeger D, Moretto P, Watier B. Transferability between Isolated Joint Torques and a Maximum Polyarticular Task: A Preliminary Study. J Hum Kinet 2016; 50:5-14. [PMID: 28149336 PMCID: PMC5260634 DOI: 10.1515/hukin-2015-0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2016] [Indexed: 11/24/2022] Open
Abstract
The aims of this study were to determine if isolated maximum joint torques and joint torques during a maximum polyarticular task (i.e. cycling at maximum power) are correlated despite joint angle and velocity discrepancies, and to assess if an isolated joint-specific torque production capability at slow angular velocity is related to cycling power. Nine cyclists completed two different evaluations of their lower limb maximum joint torques. Maximum Isolated Torques were assessed on isolated joint movements using an isokinetic ergometer and Maximum Pedalling Torques were calculated at the ankle, knee and hip for flexion and extension by inverse dynamics during cycling at maximum power. A correlation analysis was made between Maximum Isolated Torques and respective Maximum Pedalling Torques [3 joints x (flexion + extension)], showing no significant relationship. Only one significant relationship was found between cycling maximum power and knee extension Maximum Isolated Torque (r=0.68, p<0.05). Lack of correlations between isolated joint torques measured at slow angular velocity and the same joint torques involved in a polyarticular task shows that transfers between both are not direct due to differences in joint angular velocities and in mono-articular versus poly articular joint torque production capabilities. However, this study confirms that maximum power in cycling is correlated with slow angular velocity mono-articular maximum knee extension torque.
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Affiliation(s)
- Antony Costes
- PRISSMH, University of Toulouse, UPS, Toulouse, France
| | | | - Pierre Moretto
- PRISSMH, University of Toulouse, UPS, Toulouse, France
- University of Toulouse; UPS; Centre de Recherches sur la Cognition Animale; Toulouse Cedex 9, France
- CNRS; Centre de Recherches sur la Cognition Animale; Toulouse Cedex 9, France
| | - Bruno Watier
- PRISSMH, University of Toulouse, UPS, Toulouse, France
- CNRS, LAAS, Toulouse, France
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Inami T, Kawakami Y. Assessment of individual muscle hardness and stiffness using ultrasound elastography. THE JOURNAL OF PHYSICAL FITNESS AND SPORTS MEDICINE 2016. [DOI: 10.7600/jpfsm.5.313] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Hug F, Tucker K, Gennisson JL, Tanter M, Nordez A. Elastography for Muscle Biomechanics: Toward the Estimation of Individual Muscle Force. Exerc Sport Sci Rev 2015; 43:125-33. [PMID: 25906424 DOI: 10.1249/jes.0000000000000049] [Citation(s) in RCA: 209] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Estimation of individual muscle force remains one of the main challenges in biomechanics. This review presents a series of experiments that used ultrasound shear wave elastography to support the hypothesis that muscle stiffness is linearly related to both active and passive muscle forces. Examples of studies that used measurement of muscle stiffness to estimate changes in muscle force are presented.
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Affiliation(s)
- François Hug
- 1University of Nantes, Laboratory "Movement, Interactions, Performance" (EA 4334), UFR STAPS, Nantes, France; 2The University of Queensland, NHMRC Centre of Clinical Research Excellence in Spinal Pain, Injury and Health, School of Health and Rehabilitation Sciences, Brisbane, Australia; 3The University of Queensland, School of Biomedical Sciences, Brisbane, Australia; and 4Institut Langevin-Ondes et images, ESPCI ParisTech, PSL Research University, CNRS UMR7587, INSERM U979, Université Paris VII, Paris, France
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