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Bellosta-López P, Blasco-Abadía J, Andersen LL, Vinstrup J, Skovlund SV, Doménech-García V. Multimodal sensorimotor assessment of hand and forearm asymmetries: a reliability and correlational study. PeerJ 2024; 12:e17403. [PMID: 38827299 PMCID: PMC11141550 DOI: 10.7717/peerj.17403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Accepted: 04/25/2024] [Indexed: 06/04/2024] Open
Abstract
Background Effective rehabilitation of upper limb musculoskeletal disorders requires multimodal assessment to guide clinicians' decision-making. Furthermore, a comprehensive assessment must include reliable tests. Nevertheless, the interrelationship among various upper limb tests remains unclear. This study aimed to evaluate the reliability of easily applicable upper extremity assessments, including absolute values and asymmetries of muscle mechanical properties, pressure pain threshold, active range of motion, maximal isometric strength, and manual dexterity. A secondary aim was to explore correlations between different assessment procedures to determine their interrelationship. Methods Thirty healthy subjects participated in two experimental sessions with 1 week between sessions. Measurements involved using a digital myotonometer, algometer, inclinometer, dynamometer, and the Nine-Hole Peg test. Intraclass correlation coefficients, standard error of the mean, and minimum detectable change were calculated as reliability indicators. Pearson's correlation was used to assess the interrelationship between tests. Results For the absolute values of the dominant and nondominant sides, reliability was 'good' to 'excellent' for muscle mechanical properties, pressure pain thresholds, active range of motion, maximal isometric strength, and manual dexterity. Similarly, the reliability for asymmetries ranged from 'moderate' to 'excellent' across the same parameters. Faster performance in the second session was consistently found for the Nine-Hole Peg test. No systematic inter-session errors were identified for the values of the asymmetries. No significant correlations were found between tests, indicating test independence. Conclusion These findings indicate that the sensorimotor battery of tests is reliable, while monitoring asymmetry changes may offer a more conservative approach to effectively tracking recovery of upper extremity injuries.
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Affiliation(s)
- Pablo Bellosta-López
- Faculty of Health Sciences, Universidad San Jorge, Villanueva de Gállego, Zaragoza, Spain
| | - Julia Blasco-Abadía
- Faculty of Health Sciences, Universidad San Jorge, Villanueva de Gállego, Zaragoza, Spain
| | - Lars L. Andersen
- National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Jonas Vinstrup
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Sebastian V. Skovlund
- National Research Centre for the Working Environment, Copenhagen, Denmark
- Department of Sports Science and Clinical Biomechanics, University of Southern Denmark, Odense, Denmark
| | - Víctor Doménech-García
- Faculty of Health Sciences, Universidad San Jorge, Villanueva de Gállego, Zaragoza, Spain
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Lettner J, Królikowska A, Ramadanov N, Oleksy Ł, Hakam HT, Becker R, Prill R. Evaluating the Reliability of MyotonPro in Assessing Muscle Properties: A Systematic Review of Diagnostic Test Accuracy. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:851. [PMID: 38929468 PMCID: PMC11205912 DOI: 10.3390/medicina60060851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Revised: 05/17/2024] [Accepted: 05/20/2024] [Indexed: 06/28/2024]
Abstract
Background and Objectives: Muscle properties are critical for performance and injury risk, with changes occurring due to physical exertion, aging, and neurological conditions. The MyotonPro device offers a non-invasive method to comprehensively assess muscle biomechanical properties. This systematic review evaluates the reliability of MyotonPro across various muscles for diagnostic purposes. Materials and Methods: Following PRISMA guidelines, a comprehensive literature search was conducted in Medline (PubMed), Ovid (Med), Epistemonikos, Embase, Cochrane Library, Clinical trials.gov, and the WHO International Clinical Trials platform. Studies assessing the reliability of MyotonPro across different muscles were included. A methodological quality assessment was performed using established tools, and reviewers independently conducted data extraction. Statistical analysis involved summarizing intra-rater and inter-rater reliability measures across muscles. Results: A total of 48 studies assessing 31 muscles were included in the systematic review. The intra-rater and inter-rater reliability were consistently high for parameters such as frequency and stiffness in muscles of the lower and upper extremities, as well as other muscle groups. Despite methodological heterogeneity and limited data on specific parameters, MyotonPro demonstrated promising reliability for diagnostic purposes across diverse patient populations. Conclusions: The findings suggest the potential of MyotonPro in clinical assessments for accurate diagnosis, treatment planning, and monitoring of muscle properties. Further research is needed to address limitations and enhance the applicability of MyotonPro in clinical practice. Reliable muscle assessments are crucial for optimizing treatment outcomes and improving patient care in various healthcare settings.
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Affiliation(s)
- Jonathan Lettner
- Center of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany; (J.L.)
| | - Aleksandra Królikowska
- Ergonomics and Biomedical Monitoring Laboratory, Department of Physiotherapy, Faculty of Health Sciences, Wroclaw Medical University, Tytusa Chalubinskiego 3, 50-368 Wroclaw, Poland;
| | - Nikolai Ramadanov
- Faculty of Health Science, Brandenburg Medical School, 14770 Brandenburg an der Havel, Germany
| | - Łukasz Oleksy
- Department of Physiotherapy, Faculty of Health Sciences, Jagiellonian University Medical College, Michałowskiego 12, 31-126 Krakow, Poland
- Department of Orthopaedics, Traumatology and Hand Surgery, Faculty of Medicine, Wroclaw Medical University, Borowska 213, 50-556 Wroclaw, Poland
| | - Hassan Tarek Hakam
- Center of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany; (J.L.)
- Faculty of Health Science, Brandenburg Medical School, 14770 Brandenburg an der Havel, Germany
| | - Roland Becker
- Center of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany; (J.L.)
- Faculty of Health Science, Brandenburg Medical School, 14770 Brandenburg an der Havel, Germany
| | - Robert Prill
- Center of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany; (J.L.)
- Faculty of Health Science, Brandenburg Medical School, 14770 Brandenburg an der Havel, Germany
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Kopecká B, Ravnik D, Jelen K, Bittner V. Objective Methods of Muscle Tone Diagnosis and Their Application-A Critical Review. SENSORS (BASEL, SWITZERLAND) 2023; 23:7189. [PMID: 37631726 PMCID: PMC10458714 DOI: 10.3390/s23167189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
"Muscle tone" is a clinically important and widely used term and palpation is a crucial skill for its diagnosis. However, the term is defined rather vaguely, and palpation is not measurable objectively. Therefore, several methods have been developed to measure muscle tone objectively, in terms of biomechanical properties of the muscle. This article aims to summarize these approaches. Through database searches, we identified those studies related to objective muscle tone measurement in vivo, in situ. Based on them, we described existing methods and devices and compared their reliability. Furthermore, we presented an extensive list of the use of these methods in different fields of research. Although it is believed by some authors that palpation cannot be replaced by a mechanical device, several methods have already proved their utility in muscle biomechanical property diagnosis. There appear to be two issues preventing wider usage of these objective methods in clinical practice. Firstly, a high variability of their reliability, and secondly, a lack of valid mathematical models that would provide the observed mechanical characteristics with a clear physical significance and allow the results to be compared with each other.
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Affiliation(s)
- Barbora Kopecká
- Faculty of Physical Education and Sport, Charles University, 162 52 Prague, Czech Republic
| | - David Ravnik
- Faculty of Health Sciences, University of Primorska, 6310 Izola, Slovenia
| | - Karel Jelen
- Faculty of Physical Education and Sport, Charles University, 162 52 Prague, Czech Republic
| | - Václav Bittner
- Faculty of Science, Humanities and Education, Technical University of Liberec, 461 17 Liberec, Czech Republic
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Grześkowiak M, Kocur P, Łochyński D. Relationship between morphometric and mechanical properties of superficial lumbosacral soft tissue layers in healthy young adults. Front Physiol 2023; 14:1175035. [PMID: 37260591 PMCID: PMC10228649 DOI: 10.3389/fphys.2023.1175035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 04/17/2023] [Indexed: 06/02/2023] Open
Abstract
Introduction: It is commonly considered that myotonometry is a non-invasive method capable of quantifying linear elastic and viscoelastic properties of the myofascial tissue through the application of a weak mechanical impulse to the surface of the skin. However, before the impulse can reach the myofascial tissue, it must cross more superficial tissues such as the skin and subcutaneous tissue (ST). All these superficial tissues have different distributions and organizations of structural components. Therefore, the study aimed to examine the potential relationships between the mechanical and morphometric properties of various superficial soft tissues surrounding the lumbar multifidus muscle (LM). Methods: Myotonometric measurements of dynamic stiffness, logarithmic decrement, and creep, and ultrasonographic measurements of thickness and echogenicity of cutaneous, subcutaneous, perimuscular tissue, and LM were obtained from 50 healthy individuals in the resting prone position and during contralateral arm lift. Results: The most important findings were that in both the relaxed and contracted LM state, the dynamic stiffness strongly negatively (r = -0.69; p < 0.001 in relaxation, r = -0.83; p < 0.001 in contraction) and creep strongly positively (r = 0.79; p < 0.001 in relaxation, r = 0.85; p < 0.001 in contraction) correlated with the thicknesses of the ST. Similar but weaker correlations were noticed between both these measures and the perimuscular tissue thickness. Elasticity was uncorrelated to the thicknesses of the tissues. With LM contraction (change from the relaxed to contracted state), the relative increase in dynamic stiffness was correlated with the relative decrease in dermis (r = -0.51; p < 0.001) and ST (r = -0.47; p = 0.001) thickness, and with the relative increase in LM (r = 0.36; p = 0.010) thickness. Moreover, the relative decrease (thinning) in the ST thickness was correlated with the relative increase in logarithmic decrement (i.e., decrease in soft tissue elasticity, r = -0.37, p = 0.011). The mechanical properties of the soft tissues were not related to their echogenicity. Discussion: In conclusion, the thicker the subcutaneous and perimuscular layers, the lesser the stiffness and the greater the time-dependent deformation to the external force of the tissues surrounding the LM during its relaxation and isometric contraction. Moreover, the greater the thinning of the ST and the thickening of the LM during its contraction, the higher the increase in lumbosacral tissue stiffness and the decrease in elasticity. Therefore, one should consider the thickness of the ST before planning or analyzing the outcomes of myotonometric or other external biomechanical measurements to avoid drawing the wrong conclusions about the mechanical properties of the myofascial tissue.
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Affiliation(s)
- Marcin Grześkowiak
- Department of Cardiological and Rheumatological Rehabilitation, Poznan University of Physical Education, Poznan, Poland
| | - Piotr Kocur
- Department of Musculoskeletal Physiotherapy, Poznan University of Physical Education, Poznan, Poland
| | - Dawid Łochyński
- Department of Neuromuscular Physiotherapy, Poznan University of Physical Education, Poznan, Poland
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Seo H, Kim J, Yu C, Lim H. Intra-Rater and Inter-Rater Reliability Analysis of Muscle-Tone Evaluation Using a Myotonometer for Children with Developmental Disabilities. Healthcare (Basel) 2023; 11:healthcare11060782. [PMID: 36981439 PMCID: PMC10048477 DOI: 10.3390/healthcare11060782] [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: 02/07/2023] [Revised: 02/23/2023] [Accepted: 03/04/2023] [Indexed: 03/30/2023] Open
Abstract
Assessing muscle tone is an essential component of the diagnosis, prognosis, and treatment planning of developmental disabilities (DD) in children and is of great help in developing clinical diagnosis patterns. The purpose of this study was to investigate intra-rater and inter-rater reliability using the myotonometer, which is an assessment tool to measure muscle tone in children with DD. This study included 26 children diagnosed with DD. Two physical therapists measured the children's muscle tone using a myotonometer. For all the muscles measured, reliability was determined using the intra-class correlation coefficient (ICC), the standard measurement error (SEM), and the minimal detectable change (MDC). The intra-rater reliability for all muscles was excellent (ICC = 0.75~0.78), except for the biceps brachii (ICC = 0.68). The inter-rater reliability was also excellent for all muscles (ICC = 0.75~0.95), and the SEM and MDC showed small measurement errors. Therefore, the intra-rater and inter-rater reliability of measurements by the myotonometer was found to be good or excellent. This suggests that the myotonometer is a tool that can objectively assess muscle tone, and it can be utilized in clinical practice to quickly and conveniently measure muscle tone in children with DD.
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Affiliation(s)
- Heeae Seo
- Department of Physical Therapy, Graduate School, Dankook University, Cheonan 31116, Republic of Korea
| | - Jeongseon Kim
- Department of Physical Therapy, Gangdong University, Eumseong-gun 27600, Republic of Korea
| | - Changseon Yu
- Department of Rehabilitation Medicine, Dongguk University Ilsan Hospital, Goyang 10326, Republic of Korea
| | - Hyoungwon Lim
- Dankook University Disabled Rehabilitation Research Institute, Department of Physical Therapy, Dankook University, Cheonan 31116, Republic of Korea
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Isogai K, Okamoto S, Asaba T, Ogusu S, Shimizu Y, Watanabe T, Yamada Y. Young's moduli of subcutaneous tissues and muscles under different loads at the gluteal region calculated using ultrasonography. J Phys Ther Sci 2022; 34:777-783. [PMID: 36507079 PMCID: PMC9711973 DOI: 10.1589/jpts.34.777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/14/2022] [Indexed: 12/03/2022] Open
Abstract
[Purpose] Young's modulus distributions for subcutaneous and muscle tissues in a large sample of healthy individuals, based on ultrasonography and compression testing, remains uninvestigated till date. This study aimed to separately estimate the hardness of subcutaneous tissues and muscles in the human gluteal region under a range of loads in terms of mean Young's moduli and associated distributions. [Participants and Methods] Data of 21 males aged 20-22 years were acquired using synchronous compression testing and ultrasonography. Stress-strain curves comprised the loads applied (stress) were plotted against ultrasonographic changes in subcutaneous/muscle tissue thickness (strain). Young's moduli were calculated as slopes of approximation curves fitted to highly linear regions of the stress-strain curves. [Results] Young's moduli (mean ± standard deviation) for gluteal subcutaneous and muscle tissues were estimated as: 26.1 ± 19.0 kPa, 1-N load; 2,199.1 ± 1,354.8 kPa, 30-N load; and 62.2 ± 10.3 kPa, 5-N load; 440.4 ± 80.0 kPa, 30-N load, respectively. No correlation between any pair of these measures reached statistical significance. [Conclusion] Young's moduli were successfully measured for subcutaneous and muscle tissues in a large participant sample using ultrasonography and compression testing. Our results may serve as reference data when assessing tissue hardness by palpation.
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Affiliation(s)
- Kaoru Isogai
- Department of Physical Therapy, Faculty of Health and
Medical Sciences, Tokoha University: 1230 Miyakoda-cho, Kita-ku, Hamamatsu-shi, Shizuoka
431-2102, Japan,Corresponding author. Kaoru Isogai (E-mail: )
| | - Shogo Okamoto
- Department of Computer Science, Graduate School of System
Design, Tokyo Metropolitan University, Japan
| | - Takayuki Asaba
- Department of Rehabilitation, Seirei Hamamatsu General
Hospital, Japan
| | - Shogo Ogusu
- Department of Rehabilitation, Yamauchi Orthopedic Clinic,
Japan
| | - Yusuke Shimizu
- Department of Rehabilitation, Iwata City Hospital,
Japan
| | | | - Yoji Yamada
- Department of Mechanical Systems, Graduate School of
Engineering, Nagoya University, Japan
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Çevik Saldıran T, Kara İ, Kutlutürk Yıkılmaz S. Quantification of the forearm muscles mechanical properties using Myotonometer: Intra- and Inter-Examiner reliability and its relation with hand grip strength. J Electromyogr Kinesiol 2022; 67:102718. [PMID: 36334405 DOI: 10.1016/j.jelekin.2022.102718] [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: 07/23/2022] [Revised: 10/10/2022] [Accepted: 10/19/2022] [Indexed: 12/13/2022] Open
Abstract
The primary objective of this study was to investigate the reliability of the myotonometer in the mechanical properties of the forearm muscles [m. extensor carpi radialis brevis (ECRB), and m. flexor carpi ulnaris (FCU)] in healthy individuals. The secondary objective was to investigate the relationship between the handgrip strength and mechanical properties of these forearm muscles. The mechanical properties (muscle tone, stiffness, and elasticity) of the ECRB and FCU were measured using the MyotonPRO device. Examiner 1 performed two sets of measurements with a time interval of 30 min to determine intra-examiner reliability. Examiner 2 performed measurements during the interval between the two sets of examiner 1. The intra- and inter-examiner reliabilities were excellent (ICC˃0.82) for muscle tone, stiffness, and elasticity of the FCU. Both intra- and inter-examiner reliability in the evaluation of ECRB muscle tone, elasticity, and stiffness was moderate to excellent (ICCs = 0.56-0.98). The muscle tone and stiffness properties of the FCU were positively correlated with the handgrip strength (p <.05). The study findings indicate that the MyotonPRO device is a reliable tool to quantify ECRB, and FCU muscles mechanical properties in healthy individuals.
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Affiliation(s)
- Tülay Çevik Saldıran
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Bitlis Eren University, Bitlis, Turkey.
| | - İlke Kara
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Bitlis Eren University, Bitlis, Turkey; Department of Physical Therapy and Rehabilitation, Institute of Health Sciences, Dokuz Eylul University, Izmir, Turkey
| | - Seval Kutlutürk Yıkılmaz
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Istanbul Medipol University, Istanbul, Turkey
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Koch V, Wilke J. Reliability of a New Indentometer Device for Measuring Myofascial Tissue Stiffness. J Clin Med 2022; 11:jcm11175194. [PMID: 36079124 PMCID: PMC9457058 DOI: 10.3390/jcm11175194] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/22/2022] [Accepted: 08/30/2022] [Indexed: 11/29/2022] Open
Abstract
Changes in tissue stiffness are associated with pathological conditions such as myofascial pain and increased risk of muscle injury. Furthermore, they have been shown to modify performance indicators such as running economy or jump height. Indentometry is an affordable way to assess tissue stiffness. However, to date, there is a paucity of studies examining the measurement properties of available devices. With this trial, we aimed to evaluate the reliability of the “IndentoPro”. Two investigators repeatedly measured the stiffness of the lateral head of the gastrocnemius muscle in healthy participants (N = 35), using 5 and 10 mm indentation depths. Intraclass Correlation Coefficients (ICC) revealed moderate inter-rater reliability (5 mm: ICC3,1 0.74, 95%CI = 0.54 to 0.86, p < 0.001; 10 mm: ICC3,1 0.59, 95%CI = 0.27 to 0.78, p < 0.001) and good intra-rater reliability (5 mm: ICC3,1 0.84, 95%CI = 0.71 to 0.92, p < 0.001; 10 mm: ICC3,1 0.83, 95%CI = 0.69 to 0.91, p < 0.001). No correlations between age, height, weight, BMI, skinfold thickness and myofascial tissue stiffness were observed (p > 0.5). In conclusion, the IndentoPro is reliable in assessing calf tissue stiffness, but the predictors of stiffness remain unclear.
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Affiliation(s)
- Virginija Koch
- Diploma Hochschule, 37242 Bad Sooden-Allendorf, Germany
- Correspondence:
| | - Jan Wilke
- Department of Movement Sciences, University of Klagenfurt, 9020 Klagenfurt am Wörthersee, Austria
- Institute of Occupational, Social and Environmental Medicine, Goethe University Frankfurt, 60590 Frankfurt am Main, Germany
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Roch M, Morin M, Gaudreault N. Immediate Effect of Dry Needling on the Viscoelastic Properties of a Trigger Point on the Infraspinatus Muscle Measured with MyotonPRO. Physiother Can 2022. [DOI: 10.3138/ptc-2020-0095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Purpose: This article investigates the immediate effects of a dry needling (DN) puncture on the viscoelastic properties (tone, stiffness, elasticity) of a trigger point (TP) in the infraspinatus muscle in non-traumatic chronic shoulder pain. Method: Forty-eight individuals with non-traumatic chronic shoulder pain were recruited. The presence of a TP in the infraspinatus muscle was confirmed by a standardized palpatory exam. The viscoelastic properties were measured with a MyotonPRO device at baseline (T1), immediately after DN (T2), and 30 minutes later (T3). A DN puncture was applied to the TP to obtain a local twitch response while performing the technique. Results: Analyses of variance showed significant decreases in tone ( p < 0.001) and stiffness ( p = 0.003) across time after the DN technique. Post hoc tests revealed a significant reduction in tone and stiffness from T1 to T2 ( p ≤ 0.004) and no significant changes from T2 to T3 ( p ≥ 0.10). At T3, only stiffness remained significantly lower compared to T1 ( p = 0.013). Conclusions: This study brings new insights on the immediate mechanical effect of DN on tone and stiffness of TPs. Whether these effects are associated with symptom improvement and long-term effects still needs to be verified.
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Affiliation(s)
- Mélanie Roch
- Université de Sherbrooke, Faculté de médecine et des sciences de la santé, École de Réadaptation, Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Mélanie Morin
- Université de Sherbrooke, Faculté de médecine et des sciences de la santé, École de Réadaptation, Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Nathaly Gaudreault
- Université de Sherbrooke, Faculté de médecine et des sciences de la santé, École de Réadaptation, Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Sherbrooke, Quebec, Canada
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The Relation of Body Mass Index to Muscular Viscoelastic Properties in Normal and Overweight Individuals. ACTA ACUST UNITED AC 2021; 57:medicina57101022. [PMID: 34684059 PMCID: PMC8537384 DOI: 10.3390/medicina57101022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/15/2021] [Accepted: 09/23/2021] [Indexed: 02/08/2023]
Abstract
Background: The body mass index (BMI) is closely related to fat tissue, which may have direct or indirect effects on muscle function. Previous studies have evaluated BMI and muscle viscoelastic properties in vivo in older people or individual sexes; however, the relationship between BMI and muscular viscoelastic properties is still unknown. Aims: The purpose of this study was to determine the correlation of BMI with muscular viscoelastic properties, and to compare these properties in a young sedentary population with normal and overweight individuals. Methods: A total of 172 healthy sedentary individuals (mean age, 26.00 ± 5.45 years) were categorized by sex (male and female) and BMI classification (normal (BMI, 18.50-24.99 kg/m2), overweight (BMI = 25.00-29.99 kg/m2)). Body weight was evaluated using an electronic scale, while height was measured using a standard stadiometer. BMI was calculated by dividing the weight in kilograms by the square of height in meters. The viscoelastic properties (tone, stiffness, and elasticity) of the biceps brachii (BB) and biceps femoris (BF) muscles were measured bilaterally using the MyotonPRO device at rest. Results: The bilateral BF tone and stiffness, right BB stiffness, and elasticity showed weak correlations with BMI in all participants. Furthermore, the bilateral BF tone and stiffness, right BB stiffness and elasticity, and left BB stiffness were weakly positively correlated with male sex. Only the right BB elasticity was weakly positively correlated with BMI in females (p < 0.05). No correlation with BMI was determined for other viscoelastic properties (p > 0.05). The overweight group showed increased bilateral BF stiffness and tone, right BB stiffness, and reduced bilateral BB elasticity compared to the normal-weight group (p < 0.05), while other viscoelastic properties were similar (p > 0.05). Greater bilateral BB tone, BF tone and stiffness, and lower BF elasticity were observed in males than in females (p < 0.05), but other viscoelastic properties were not significantly different (p < 0.05). No effect of BMI-sex interactions was found on viscoelastic properties (p > 0.05). Conclusions: The BB and BF viscoelastic properties were weakly correlated with BMI. Males showed greater muscle tone and stiffness, and lower elasticity. The overweight individuals showed increased stiffness and tone, particularly in lower extremities, and reduced elasticity in upper extremities. The effect of BMI-sex interactions on the viscoelastic properties was not clear. Higher BMI (increased mechanical load) might cause the human body to develop different muscular viscoelastic adaptations in the extremities.
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Age Related Changes of Superior Orbicularis Oris Muscle in Terms of Tone and Viscoelastic Properties. J Craniofac Surg 2021; 33:236-239. [PMID: 34261972 DOI: 10.1097/scs.0000000000007992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To examine the age-related changes in the viscoelastic properties and tone of the superior orbicularis oris muscle by a portablehand-held myotonometer. METHODS A total of 128 individuals (65 female, 63 male) who met the inclusion criteria were evaluated. Individuals were divided into 2 groups as under 40 years old (Group 1), and above (Group 2). The viscoelastic properties and muscle tone of orbicularis oris muscle were evaluated bilaterally in supine position with the Myoton PRO (Myoton AS, Estonia) device from the skin overlying the orbicularis oris. The reference point is accepted as the right and left paramedial philtrum dimple. The statistical analysis was performed. RESULTS There was no statistically significant difference in the elasticity values of the right and left orbicularis oris muscles of the Group 1 and Group 2 individuals. There was a difference between the groups when the tone and stiffness values of both groups were compared. It was determined that individuals over the age of 40 had higher muscle tone and stiffness. All mechanical properties of the superior orbicularis oris muscle between the male and female individuals in Group 1 were different. The values are higher in the female gender. The elasticity values in both genders in Group 2 were similar. Tone and stiffness parameters were different between genders. CONCLUSIONS Myoton PRO can be recommended as an alternative device in the quantitative evaluations of post-operative follow-ups, and pre/post rehabilitation in terms of viscoelastic parameters of the muscle.
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Song C, Yu YF, Ding WL, Yu JY, Song L, Feng YN, Zhang ZJ. Quantification of the Masseter Muscle Hardness of Stroke Patients Using the MyotonPRO Apparatus: Intra- and Inter-Rater Reliability and Its Correlation with Masticatory Performance. Med Sci Monit 2021; 27:e928109. [PMID: 33515446 PMCID: PMC7856838 DOI: 10.12659/msm.928109] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Chewing dysfunction is one of the most common serious complications after a stroke. It may be influenced by the hardness of the masseter muscle and masticatory performance; however, the association between these 2 factors is not explicit. Thus, it is meaningful to explore the functional status of the masseter muscle among stroke patients. The main objectives of this study were to examine the intra- and inter-rater reliability of the MyotonPRO apparatus in measuring masseter muscle hardness in stroke patients and to investigate the correlation between the bilateral masseter muscle hardness and masticatory performance in these patients. MATERIAL AND METHODS A total of 20 stroke patients participated in our study. The hardness of the masseter muscle was measured by 2 physiotherapists using the MyotonPRO apparatus. Overall, each patient masticated 2 pieces of red-blue bicolor chewing gum for 20 chewing cycles each. The chewing pieces were analyzed using ViewGum software for masticatory performance. RESULTS The intra- and inter-rater reliability of the MyotonPRO apparatus for measuring bilateral masseter hardness of stroke patients was excellent. The correlation analysis showed that the hardness index of the masseter muscle on the affected side was moderately correlated with the masticatory performance of the same side. CONCLUSIONS The MyotonPRO device can be used for measuring the masseter muscle hardness of stroke patients, with excellent reliability. This study established the construct validity between the stiffness of the masseter muscle and masticatory performance.
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Affiliation(s)
- Chao Song
- Department of Rehabilitation Therapy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Yi-Fu Yu
- Department of Rehabilitation Therapy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Wen-Long Ding
- Department of Rehabilitation Therapy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Jian-Yong Yu
- Department of Rehabilitation Medicine, Huiji District People's Hospital, Zhengzhou, Henan, China (mainland)
| | - Li Song
- Department of Rehabilitation Therapy, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China (mainland)
| | - Ya-Nan Feng
- Rehabilitation Therapy Center, Luoyang Orthopedics Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China (mainland)
| | - Zhi-Jie Zhang
- Rehabilitation Therapy Center, Luoyang Orthopedics Hospital of Henan Province, Orthopedic Hospital of Henan Province, Luoyang, Henan, China (mainland)
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Application of the novel estimation method by shear wave elastography using vibrator to human skeletal muscle. Sci Rep 2020; 10:22248. [PMID: 33335237 PMCID: PMC7747727 DOI: 10.1038/s41598-020-79215-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 12/02/2020] [Indexed: 12/28/2022] Open
Abstract
In recent years, non-invasive measurement of tissue stiffness (hardness) using ultrasound elastography has attracted considerable attention. It has been used to evaluate muscle stiffness in the fields of rehabilitation, sports, and orthopedics. However, ultrasonic diagnostic devices with elastography systems are expensive and clinical use of such devices has been limited. In this study, we proposed a novel estimation method for vibration-based shear wave elastography measurement of human skeletal muscle, then determined its reproducibility and reliability. The coefficient of variation and correlation coefficient were used to determine reproducibility and reliability of the method by measuring the shear wave velocities in konjac phantom gels and agar phantom gels, as well as skeletal muscle. The intra-day, day-to-day, and inter-operator reliabilities were good when measuring the shear wave velocities in phantom gels. The intra-day and day-to-day reliabilities were good when measuring the shear wave velocities in skeletal muscle. The findings confirmed adequate reproducibility and reliability of the novel estimation method for vibration-based shear wave elastography. Therefore, the proposed measurement method may be a useful tool for evaluation of muscle stiffness.
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Biceps brachii muscle hardness assessed by a push-in meter in comparison to ultrasound strain elastography. Sci Rep 2020; 10:20308. [PMID: 33219272 PMCID: PMC7680096 DOI: 10.1038/s41598-020-77330-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 11/09/2020] [Indexed: 11/09/2022] Open
Abstract
This study investigated the relationship between push-in meter (PM) and ultrasound strain elastography (USE) for biceps brachii (BB) muscle hardness. BB hardness of 21 young men was assessed by PM and USE during rest and isometric contractions of six different intensities (15, 30, 45, 60, 75, 90% of maximal voluntary contraction: MVC) at 30°, 60° and 90° elbow flexion. Muscle hardness (E) was calculated from the force-displacement relationship in PM, and strain ratio (SR) between an acoustic coupler (elastic modulus: 22.6 kPa) and different regions of interest (ROIs) in BB was calculated and converted to Young's modulus (YM) in USE. In resting muscle, E was 26.1 ± 6.4 kPa, and SR and YM for the whole BB was 0.88 ± 0.4 and 30.8 ± 12.8 kPa, respectively. A significant (p < 0.01) correlation was evident between E and logarithmical transformed SR (LTSR) for the ROI of whole BB (r = - 0.626), and E and converted YM (r = 0.615). E increased approximately ninefold from resting to 90% MVC, and E and LTSR (r = - 0.732 to - 0.880), and E and converted YM for the SR above 0.1 were correlated (r = 0.599-0.768, p < 0.01). These results suggest that muscle hardness values obtained by PM and USE are comparable.
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The MyotonPRO: A reliable tool for quantifying the viscoelastic properties of a trigger point on the infraspinatus in non-traumatic chronic shoulder pain. J Bodyw Mov Ther 2020; 24:379-385. [DOI: 10.1016/j.jbmt.2020.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 04/16/2020] [Accepted: 05/03/2020] [Indexed: 12/11/2022]
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Mud Therapy Combined with Core Exercise for Chronic Nonspecific Low Back Pain: A Pilot, Single-Blind, Randomized Controlled Trial. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:7547452. [PMID: 32328139 PMCID: PMC7157804 DOI: 10.1155/2020/7547452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 01/08/2020] [Indexed: 11/17/2022]
Abstract
Background Low back pain (LBP) is common in the elderly and an appropriate intervention for LBP management should be investigated. The aim of this study is to investigate the potential of mud-heat intervention combined with core exercise as an alternative intervention for relieving pain and improving motor function in individuals with nonspecific chronic LBP. Methods Thirty-one individuals with chronic nonspecific LBP were randomly allocated to either the intervention group (n = 16) or the control group (n = 15). The intervention group used a mud pack for 30 min and performed a core-exercise program for 50 min twice a day for 4 days (8 sessions). The control group performed the core-exercise program only, at the same time point as the intervention group. Pain intensity was assessed using a 100 mm visual analog scale and a pain pressure threshold (PPT) as the primary outcomes. The secondary outcome measures included functional disability by LBP (Oswestry Disability Index), muscle properties, and static/dynamic balance. Results There was a significant group difference in pain intensity at rest (p=0.048) and in the PPT at the two sites assessed (2 cm lateral to L3 spinous process, p=0.045; 2 cm lateral to L5 spinous process, p=0.015). No group differences were found in terms of muscle properties. Compared to core exercise only, moor-heat therapy and core exercise showed a significant improvement in static balance (p=0.026) and dynamic balance (p=0.019). Conclusion Mud therapy combined with core exercise is effective in relieving pain and improving motor function in patients with chronic nonspecific LBP. Further research is needed to underpin these preliminary results.
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Cabanas-Valdés R, Calvo-Sanz J, Urrùtia G, Serra-Llobet P, Pérez-Bellmunt A, Germán-Romero A. The effectiveness of extracorporeal shock wave therapy to reduce lower limb spasticity in stroke patients: a systematic review and meta-analysis. Top Stroke Rehabil 2019; 27:137-157. [DOI: 10.1080/10749357.2019.1654242] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Rosa Cabanas-Valdés
- Physiotherapy Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
| | - Jordi Calvo-Sanz
- Physiotherapy Department Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
- Rehabilitation Department, Hospital Asepeyo Sant Cugat del Vallès, Barcelona, Spain
| | - Gerard Urrùtia
- Centro Cochrane Iberoamericano, Institut d’Investigació Biomèdica Sant Pau, CIBERESP, Barcelona, Spain
| | - Pol Serra-Llobet
- Physiotherapy Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
| | | | - Ana Germán-Romero
- Physiotherapy Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
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Jiménez-Sánchez C, Ortiz-Lucas M, Bravo-Esteban E, Mayoral-del Moral O, Herrero-Gállego P, Gómez-Soriano J. Myotonometry as a measure to detect myofascial trigger points: an inter-rater reliability study. Physiol Meas 2018; 39:115004. [DOI: 10.1088/1361-6579/aae9aa] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Murayama M, Inami T, Shima N, Nosaka K, Uchiyama T, Yoneda T. Optimum displacement of muscle in relation to thickness for biceps brachii hardness measurement using a push-in meter. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aaea52] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Liu CL, Li YP, Wang XQ, Zhang ZJ. Quantifying the Stiffness of Achilles Tendon: Intra- and Inter-Operator Reliability and the Effect of Ankle Joint Motion. Med Sci Monit 2018; 24:4876-4881. [PMID: 30006997 PMCID: PMC6069534 DOI: 10.12659/msm.909531] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background The objectives of the present study were to examine the intra- and inter-operator reliability of the MyotonPRO device in quantifying the stiffness of the Achilles tendon and the device’s ability to examine the modulation in stiffness of the Achilles tendon during ankle joint flexion. Material/Methods Twenty asymptomatic participants (10 males and 10 females; mean age: 25.0±3.1 years) were recruited for this study. The stiffness of the Achilles tendon was quantified using the MyotonPRO device. Results The results revealed excellent intra- and inter-operator reliability for quantifying Achilles tendon stiffness with the ankle joint in a neutral position and detected a 13.9% increase in stiffness of the Achilles tendon between 0° and 30° of ankle joint flexion. The minimal detectable change (MDC) in tendon stiffness was 45 Newton/meter (N/m). Conclusions Our findings indicated that the MyotonPRO device is a feasible method to quantify the stiffness of the Achilles tendon and monitor its changes. Thus, it is an essential tool to use to examine the modulation in the stiffness of the Achilles tendon due to pathology or interventions for future studies.
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Affiliation(s)
- Chun Long Liu
- Clinical Medical College of Acupuncture, Moxibustion and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland)
| | - Ya Peng Li
- Rehabilitation Therapy Center, Henan Province Orthopedic Hospital, Luoyang, Henan, China (mainland)
| | - Xue Qiang Wang
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai, China (mainland)
| | - Zhi Jie Zhang
- Rehabilitation Therapy Center, Henan Province Orthopedic Hospital, Luoyang, Henan, China (mainland)
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Abstract
Spasticity is a serious problem that adversely affects the daily life of patients, and creates difficulties for caregivers. The symptom that causes the most disability in multiple sclerosis patients is spasticity. The methods used in the measurement and evaluation of spasticity have some incomplete aspects and errors. In this article, we examined and compared the old and new methods used in the quantitative evaluation of spasticity, and tried to define the ideal method.
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Affiliation(s)
- Belgin Petek Balci
- Department of Neurology, Faculty of Medicine, University of Health Sciences; Haseki Research and Education Hospital Neurology Clinic, İstanbul, Turkey
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Li X, Shin H, Zong Y, Li S, Zhou P. Assessing muscle compliance in stroke with the Myotonometer. Clin Biomech (Bristol, Avon) 2017; 50:110-113. [PMID: 29065349 PMCID: PMC6729130 DOI: 10.1016/j.clinbiomech.2017.10.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 08/18/2017] [Accepted: 10/12/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND This study explores changes of the intrinsic biomechanical property in the biceps brachii muscle after a hemispheric stroke using the Myotonometry technique. METHODS Nineteen subjects with chronic hemiplegia participated in the study. Myotonometer was used to measure tissue displacement when compression force was applied at 8 levels from 2.45N to 19.6N. Muscle displacement and compliance were determined and averaged over multiple trials. FINDINGS Statistical analysis indicated a significant decrease in muscle displacement and compliance in the spastic muscles compared with the contralateral side (muscle displacements: spastic: 4.51 (0.31) mm, contralateral: 5.74 (0.37) mm, p<0.005; compliance: spastic: 0.17 (0.011) mm/N, contralateral: 0.22 (0.014) mm/N, p<0.005). Correlation analysis, however, did not show any association between clinical assessments and myotonometric measurement (p>0.1). INTERPRETATION Alterations of muscle compliance in the spastic side reflect changes in the contractile or intrinsic mechanical properties after a stroke. Findings of the study have demonstrated high sensitivity and effectiveness of the Myotonometer in assessing muscle compliance changes.
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Affiliation(s)
- Xiaoyan Li
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA,Corresponding author at: TIRR Research Center, 1333B Moursund St, Houston, TX 77030, USA. (X. Li)
| | - Henry Shin
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
| | - Ya Zong
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
| | - Sheng Li
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
| | - Ping Zhou
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA,Guangdong Work Injury Rehabilitation Center, Guangzhou, China
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Assessing the viscoelastic properties of upper trapezius muscle: Intra- and inter-tester reliability and the effect of shoulder elevation. J Electromyogr Kinesiol 2017; 43:226-229. [PMID: 29103836 DOI: 10.1016/j.jelekin.2017.09.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 09/26/2017] [Accepted: 09/26/2017] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Increasing stiffness in the upper trapezius muscle may contribute to imbalance of scapular motion, and result in shoulder and neck discomfort during shoulder flexion. Therefore, it is essential to quantify upper trapezius stiffness in various shoulder positions in order to aid in the prevention of these disorders and to optimize rehabilitation. OBJECTIVES The objectives of the present study were to examine the intra and inter-tester reliability of MyotonPRO device in measuring upper trapezius stiffness and its ability to determine changes in stiffness during shoulder flexion. METHODS Twenty healthy male subjects (mean age: 28.3±4.8 years) were studied. The stiffness of upper trapezius was quantified using the MyotonPRO device. RESULTS The results revealed excellent intra and inter-tester reliability for measuring upper trapezius stiffness with the shoulder in a neutral position, and also found a 14.2% increase in stiffness upon shoulder flexion between 0° and 60° of flexion. Minimal detectable change (MDC) was 26.3 N/m. CONCLUSIONS Our findings indicate that MyotonPRO device is a feasible tool to quantify upper trapezius stiffness as well as changes in muscle stiffness. Thus, it is important to assess the changes in upper trapezius muscle stiffness due to pathology or treatments for future studies.
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Yamamoto A, Yamakoshi Y, Ohsawa T, Shitara H, Ichinose T, Shiozawa H, Sasaki T, Hamano N, Yuminaka Y, Takagishi K. Shear wave velocity measurement of upper trapezius muscle by color Doppler shear wave imaging. J Med Ultrason (2001) 2017; 45:129-136. [PMID: 28660306 DOI: 10.1007/s10396-017-0803-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/30/2017] [Indexed: 10/19/2022]
Abstract
PURPOSE Skeletal muscle stiffness is thought to be the result of increased tissue hardness, but measurement accuracy has been dependent on operator technique. We have proposed a novel shear wave real-time imaging method (color Doppler shear wave imaging: CD SWI) with continuous shear waves excited from the tissue surface by a mechanical vibrator. METHODS Using the method, shear wave velocity was measured for the upper trapezius muscle. Adaptive shear wave velocity measurement by means of quality estimation of shear wave wavefront was adopted. We recruited 23 male volunteers with no history of orthopedic disease and recorded shear wave propagation to assess the intra- and inter-observer reliability. For intra-observer reliability, one observer took two measurements separated by a time delay, and the intra-class correlation coefficient (ICC) was calculated (1,1). For inter-observer reliability, ICC (2,1) was calculated from both observers' measurements. RESULTS Mean propagation speed was 3.75 ± 0.47 (first) and 3.71 ± 0.49 m/s (second) for Observer A (ICC (1,1) = 0.91 [95% CI 0.76-0.96]) and 3.80 ± 0.53 m/s for Observer B (ICC (2,1) = 0.83 [95% CI 0.56-0.94]). CONCLUSIONS This result suggests that our technique is satisfactorily reliable and has potential for future application in various fields, such as evaluation of muscle condition or the effects of rehabilitation.
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Affiliation(s)
- Atsushi Yamamoto
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
| | - Yoshiki Yamakoshi
- Department of Electronics and Informatics, Gunma University Graduate School of Science and Technology, Kiryu, Gunma, Japan
| | - Takashi Ohsawa
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hitoshi Shitara
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Tsuyoshi Ichinose
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Hiroyuki Shiozawa
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Tsuyoshi Sasaki
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Noritaka Hamano
- Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan
| | - Yasushi Yuminaka
- Department of Electronics and Informatics, Gunma University Graduate School of Science and Technology, Kiryu, Gunma, Japan
| | - Kenji Takagishi
- Department of Orthopaedic Surgery, St. Pierre Hospital, Takasaki, Gunma, Japan
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Rätsep T, Asser T. The effect of subthalamic stimulation on viscoelastic stiffness of skeletal muscles in patients with Parkinson's disease. Clin Biomech (Bristol, Avon) 2017; 44:94-98. [PMID: 28376379 DOI: 10.1016/j.clinbiomech.2017.03.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 03/19/2017] [Accepted: 03/24/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Myotonometric evaluation of viscoelastic stiffness of skeletal muscles has been proposed to document the effect of surgical or pharmacological treatment on rigidity in patients with Parkinson's disease. The aim of the study was to analyze the changes of viscoelastic stiffness induced by deep brain stimulation. METHODS Fifteen patients in an advanced stage of Parkinson's disease participated in the study. The study took place in the off-medication conditions after one night of drug withdrawal. The Unified Parkinson's Disease Rating Scale was used for clinical assessment of the disease. Myotonometry was used to measure viscoelastic stiffness in the resting muscles before and directly after passive wrist movements, commonly used for clinical evaluation of rigidity. The measurements were repeated during the stimulation-on and stimulation-off periods and compared with fifteen healthy control persons. FINDINGS The clinical scores for wrist rigidity improved from 3.0 (1-4) to 0.93 (0-2) (P<0.05) due to brain stimulation. The mean values of viscoelastic stiffness were similar before and after passive wrist movements, but the differences between the patients with high vs. low rigidity values (354.9 vs 310.2N/m; P<0.05) and in stimulation-off vs. stimulation-on conditions (342.7 vs 310.5N/m; P<0.05) were significant only if the measurements had been performed after passive wrist movements. INTERPRETATION Effective deep brain stimulation and increased rigidity can significantly change viscoelastic stiffness in the resting muscles in patients with Parkinson's disease, especially if evaluated after passive wrist movements. This paper supports the use of myotonometry for objective quantification of parkinsonian rigidity at rest.
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Affiliation(s)
- Tõnu Rätsep
- Department of Neurology and Neurosurgery, University of Tartu, Estonia.
| | - Toomas Asser
- Department of Neurology and Neurosurgery, University of Tartu, Estonia
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Inami T, Tsujimura T, Shimizu T, Watanabe T, Lau WY, Nosaka K. Relationship between isometric contraction intensity and muscle hardness assessed by ultrasound strain elastography. Eur J Appl Physiol 2017; 117:843-852. [DOI: 10.1007/s00421-016-3528-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 12/08/2016] [Indexed: 01/16/2023]
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Li X, Shin H, Li S, Zhou P. Assessing muscle spasticity with Myotonometric and passive stretch measurements: validity of the Myotonometer. Sci Rep 2017; 7:44022. [PMID: 28281581 PMCID: PMC5345015 DOI: 10.1038/srep44022] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 02/03/2017] [Indexed: 11/09/2022] Open
Abstract
Spasticity of the biceps brachii muscle was assessed using the modified Ashworth Scale (MAS), Myotonometry and repeated passive stretch techniques, respectively. Fourteen subjects with chronic hemiplegia participated in the study. Spasticity was quantified by muscle displacements and compliance from the Myotonometer measurements and resistive torques from the repeated passive stretch at velocities of 5 °/s and 100 °/s, respectively. Paired t-tests indicated a significant decrease of muscle displacement and compliance in the spastic muscles as compared to the contralateral side (muscle displacement: spastic: 4.84 ± 0.33 mm, contralateral: 6.02 ± 0.49 mm, p = 0.038; compliance: spastic: 1.79 ± 0.12 mm/N, contralateral: 2.21 ± 0.18 mm/kg, p = 0.048). In addition, passive stretch tests indicated a significant increase of total torque at the velocity of 100 °/s compared with that of 5 °/s (Tt5 = 2.82 ± 0.41 Nm, Tt100 = 6.28 ± 1.01 Nm, p < 0.001). Correlation analysis revealed significant negative relationships between the stretch test and the Myotonometer measurements (r < −0.5, p < 0.05). Findings of this study provided validation of the Myotonometry technique and its high sensitivity in examination of spasticity in stroke.
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Affiliation(s)
- Xiaoyan Li
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
| | - Henry Shin
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
| | - Sheng Li
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
| | - Ping Zhou
- Department of Physical Medicine and Rehabilitation, University of Texas Health Science Center at Houston, and TIRR Memorial Hermann Research Center, Houston, TX, USA
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Kocur P, Grzeskowiak M, Wiernicka M, Goliwas M, Lewandowski J, Łochyński D. Effects of aging on mechanical properties of sternocleidomastoid and trapezius muscles during transition from lying to sitting position-A cross-sectional study. Arch Gerontol Geriatr 2016; 70:14-18. [PMID: 28012296 DOI: 10.1016/j.archger.2016.12.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 11/25/2022]
Abstract
AIM The aim of this study was to analyze the effects of aging on the viscoelastic properties of the upper trapezius (UT) and the sternocleidomastoid (SCM) muscle during transition from lying to sitting position. MATERIALS AND METHODS The study included 39 older (mean age 67±5.9years) and 36 younger (21.1±1.8years) women. Tone, stiffness and elasticity of the UT and the SCM were measured by means of myotonometry (MyotonPRO) in lying and then, in sitting position. The results were compared using two-way analysis of variance. RESULTS Irrespective of the position, older women presented with significantly higher muscle tone, stiffness and elasticity than younger subjects (P<0.05). In both groups, the transition from lying to sitting position resulted in a decrease (P<0.05) in the tone and stiffness, but not the elasticity (P>0.05) of the SCM, and stimulated an increase in the tone, stiffness and elasticity of the UT (P<0.05). The degree of changes in both study groups was similar, except from the absolute value of the UT elasticity, significantly higher increase in older women than in younger subjects (P<0.05). CONCLUSION Age contributes to an increase in the stiffness and tone of the UT and the SCM, as well as to a decrease in the elasticity of these muscles in female subjects. In contrast, age exerts only a slight effect on the mechanical properties of both muscles during transition from lying to sitting position.
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Affiliation(s)
- Piotr Kocur
- Department of Musculoskeletal Rehabilitation, Poznan University of Physical Education, Poland.
| | - Marcin Grzeskowiak
- Department of Pulmonological and Rheumatological Rehabilitation, Poznan University of Physical Education, Poland.
| | - Marzena Wiernicka
- Department of Musculoskeletal Rehabilitation, Poznan University of Physical Education, Poland.
| | - Magdalena Goliwas
- Department of Musculoskeletal Rehabilitation, Poznan University of Physical Education, Poland.
| | - Jacek Lewandowski
- Department of Musculoskeletal Rehabilitation, Poznan University of Physical Education, Poland.
| | - Dawid Łochyński
- Department of Musculoskeletal Rehabilitation, Poznan University of Physical Education, Poland.
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Chao YW, Lin JJ, Yang JL, Wang WTJ. Kinesio taping and manual pressure release: Short-term effects in subjects with myofasical trigger point. J Hand Ther 2016; 29:23-9. [PMID: 26705672 DOI: 10.1016/j.jht.2015.10.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/15/2015] [Accepted: 10/15/2015] [Indexed: 02/03/2023]
Abstract
STUDY DESIGN Randomized controlled trial. INTRODUCTION Myofascial pain syndrome is characterized by myofascial trigger points (MTrPs) and fascia tenderness. PURPOSE OF THE STUDY We investigated the effects of manual pressure release (MPR) alone or in combination with taping (MPR/MKT) in subjects with MTrPs. METHODS Fifteen and 16 subjects received MPR and MPR/MKT respectively. Outcomes including Pressure pain threshold, muscle stiffness, mechanomyography were assessed at baseline, post-intervention and 7-days later. RESULTS Pressure pain threshold improved significantly (d = 1.79, p < 0.005) in both groups. Significant improvement in muscle stiffness in the MPR/MKT group (0.27-0.49 mm) as compared to the MPR group (-0.02-0.23 mm). Mechanomyography amplitude in the MPR/MKT group was significantly higher than that of the MPR group (p < 0.05). CONCLUSION MPR and MPR/MKT are effective in reducing pain in these subjects. MPR/MKT has a greater effect on muscle stiffness and contraction amplitude. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Yu Wen Chao
- School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Jiu Jenq Lin
- School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Physical Medicine & Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan.
| | - Jing Lan Yang
- Department of Physical Medicine & Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan
| | - Wendy Tzyy-Jiuan Wang
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan
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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: 56] [Impact Index Per Article: 7.0] [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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Dietsch AM, Solomon NP, Sharkey LA, Duffy JR, Strand EA, Clark HM. Perceptual and instrumental assessments of orofacial muscle tone in dysarthric and normal speakers. ACTA ACUST UNITED AC 2015; 51:1127-42. [PMID: 25437151 DOI: 10.1682/jrrd.2013.07.0167] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 04/21/2014] [Indexed: 11/05/2022]
Abstract
Clinical assessment of orofacial muscle tone is of interest for differential diagnosis of the dysarthrias, but standardized procedures and normative data are lacking. In this study, perceptual ratings of tone were compared with instrumental measures of tissue stiffness for facial, lingual, and masticatory muscles in 70 individuals with dysarthria. Perceptual and instrumental tone data were discordant and failed to discriminate between five dysarthria types. These results raised concerns about the validity of Myoton-3 stiffness measures in the orofacial muscles. Therefore, a second study evaluated contracted and relaxed orofacial muscles in 10 neurotypical adults. Results for the cheek, masseter, and lateral tongue surface followed predictions, with significantly higher tissue stiffness during contraction. In contradiction, stiffness measures from the superior surface of the tongue were lower during contraction. Superior-to-inferior tongue thickness was notably increased during contraction. A third study revealed that tissue thickness up to ~10 mm significantly affected Myoton-3 measures. Altered tissue thickness due to neuromuscular conditions like spasticity and atrophy may have undermined the detection of group differences in the original sample of dysarthric speakers. These experiments underscore the challenges of assessing orofacial muscle tone and identify considerations for quantification of tone-related differences across dysarthria groups in future studies.
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Oliva-Pascual-Vaca Á, Heredia-Rizo AM, Barbosa-Romero A, Oliva-Pascual-Vaca J, Rodríguez-Blanco C, Tejero-García S. Assessment of paraspinal muscle hardness in subjects with a mild single scoliosis curve: a preliminary myotonometer study. J Manipulative Physiol Ther 2015; 37:326-33. [PMID: 24928641 DOI: 10.1016/j.jmpt.2014.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 02/06/2014] [Accepted: 03/04/2014] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the hardness of the paraspinal muscles in the convexity and concavity of patients with scoliosis curvatures and in the upper trapezius (UT) muscle in subjects with mild idiopathic scoliosis (IS) and to observe the correlation between the myotonometer (MYO) measurements and the value of body mass index (BMI) and the Cobb angle. METHODS The sample included 13 patients with a single-curve mild IS (Risser sign ≤ 4) at thoracic, lumbar, or thoracolumbar level (mean Cobb angle of 11.53º). Seven females and 6 males were recruited, with a mean age of 12.84 ± 3.06 (9-18) years. A MYO was used to examine the differences in muscle hardness on both sides of the scoliosis curvature at several points: (a) apex of the curve, (b) upper and lower limits of the curve, and (c) the midpoint between the apex and the upper limit and between the apex and the lower limit. The UT was also explored. RESULTS Although the MYO recorded lower values in all points on the concave side of the scoliosis, there were no significant differences in the comparison between sides (P > .05). No association was observed between BMI and MYO values, whereas the Cobb angle negatively correlated with muscle hardness only at 2 points on the convex side. CONCLUSION The preliminary findings show that, in subjects with a single-curve mild IS, muscular hardness in the UT and paraspinal muscles, as assessed using a MYO, was not found to differ between the concave and the convex sides at different reference levels.
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Affiliation(s)
- Ángel Oliva-Pascual-Vaca
- Assistant Professor, Department of Physical Therapy, Faculty of Nursing, Physiotherapy and Podiatry, University of Sevilla, Sevilla, Spain
| | - Alberto Marcos Heredia-Rizo
- Assistant Professor, Department of Physical Therapy, Faculty of Nursing, Physiotherapy and Podiatry, University of Sevilla, Sevilla, Spain.
| | - Alejandro Barbosa-Romero
- Clinician, Department of Physical Therapy, Faculty of Nursing, Physiotherapy and Podiatry, University of Sevilla, Sevilla, Spain
| | - Jesús Oliva-Pascual-Vaca
- Assistant Professor, Department of Physical Therapy, Universitary School of Osuna, Sevilla, Spain
| | - Cleofás Rodríguez-Blanco
- Physiotherapist, Osteopathic Physician, DO, Assistant Professor, Department of Physical Therapy, Faculty of Nursing, Physiotherapy and Podiatry, University of Sevilla, Sevilla, Spain
| | - Sergio Tejero-García
- Consultant, Unit of Traumatology and Orthopaedics, Virgen del Rocío Hospital, Sevilla, Spain
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Kang DH, Jeon JK, Lee JH. Effects of low-frequency electrical stimulation on cumulative fatigue and muscle tone of the erector spinae. J Phys Ther Sci 2015; 27:105-8. [PMID: 25642049 PMCID: PMC4305535 DOI: 10.1589/jpts.27.105] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 07/18/2014] [Indexed: 11/24/2022] Open
Abstract
[Purpose] The aim of this study was to determine the effect of low-frequency electrical
stimulation on fatigue recovery of the erector spinae with cumulative fatigue induced by
repeated lifting and lowering work. [Subjects] Thirty-two healthy men volunteered to
participate in this study and they were randomly divided into three groups: a MC group of
12 persons who underwent microcurrent, a TENS group of 10 persons who underwent
Transcutaneous electrical nerve stimulation, and a control group of 10 persons who only
rested. [Methods] Cumulative fatigue was induced and then, EMG, muscle tone, CK and LDH
serum levels of the erector spinae were measured. Each group then underwent the assigned
intervention and was re-measured. To analyze the differences in fatigue between before and
after the intervention, the paired t-test was conducted, while groups were compared using
analysis of covariance with a control group. [Results] The MC groups showed a significant
reduction in muscle fatigue and decreased muscle tone when compared to the control group.
However, no significant differences were found between the TENS and control groups.
[Conclusion] These results suggest that microcurrent stimulation was effective for
recovery from cumulative muscle fatigue while TENS had no effect.
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Affiliation(s)
- Da-Haeng Kang
- Department of Physical Therapy, Dongsin University, Republic of Korea
| | - Jae-Keun Jeon
- Department of Physical Therapy, Hanlyo University, Republic of Korea
| | - Joon-Hee Lee
- Department of Physical Therapy, Cheongju University, Republic of Korea
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Bilston LE, Tan K. Measurement of passive skeletal muscle mechanical properties in vivo: recent progress, clinical applications, and remaining challenges. Ann Biomed Eng 2014; 43:261-73. [PMID: 25404536 DOI: 10.1007/s10439-014-1186-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Accepted: 11/06/2014] [Indexed: 12/30/2022]
Abstract
The ability to measure and quantify the properties of skeletal muscle in vivo as a method for understanding its complex physiological and pathophysiological behavior is important in numerous clinical settings, including rehabilitation. However, this remains a challenge to date due to the lack of a "gold standard" technique. Instead, there are a myriad of measuring techniques each with its own set of pros and cons. This review discusses the current state-of-the-art in elastography imaging techniques, i.e., ultrasound and magnetic resonance elastography, as applied to skeletal muscle, and briefly reviews other methods of measuring muscle mechanical behavior in vivo. While in vivo muscle viscoelastic properties can be measured, these techniques are largely limited to static or quasistatic measurements. Emerging elastography techniques are able to quantify muscle anisotropy and large deformation effects on stiffness, but, validation and optimization of these newer techniques is required. The development of reliable values for the mechanical properties of muscle across the population using these techniques are required to enable them to become more useful in rehabilitation and other clinical settings.
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Acute effects of static active or dynamic active stretching on eccentric-exercise-induced hamstring muscle damage. Int J Sports Physiol Perform 2014; 10:346-52. [PMID: 25229605 DOI: 10.1123/ijspp.2014-0206] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To examine whether an acute bout of active or dynamic hamstring-stretching exercises would reduce the amount of muscle damage observed after a strenuous eccentric task and to determine whether the stretching protocols elicit similar responses. DESIGN A randomized controlled clinical trial. METHODS Thirty-six young male students performed 5 min of jogging as a warm-up and were allocated to 1 of 3 groups: 3 min of static active stretching (SAS), 3 min of dynamic active stretching (DAS), or control (CON). All subjects performed eccentric exercise immediately after stretching. Heart rate, core temperature, maximal voluntary isometric contraction, passive hip flexion, passive hamstring stiffness (PHS), plasma creatine kinase activity, and myoglobin were recorded at prestretching, at poststretching, and every day after the eccentric exercises for 5 d. RESULTS After stretching, the change in hip flexion was significantly higher in the SAS (5°) and DAS (10.8°) groups than in the CON (-4.1°) group. The change in PHS was significantly higher in the DAS (5.6%) group than in the CON (-5.7%) and SAS (-6.7%) groups. Furthermore, changes in muscle-damage markers were smaller in the SAS group than in the DAS and CON groups. CONCLUSIONS Prior active stretching could be useful for attenuating the symptoms of muscle damage after eccentric exercise. SAS is recommended over DAS as a stretching protocol in terms of strength, hamstring range of motion, and damage markers.
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Wang CZ, Li TJ, Zheng YP. Shear modulus estimation on vastus intermedius of elderly and young females over the entire range of isometric contraction. PLoS One 2014; 9:e101769. [PMID: 24991890 PMCID: PMC4081795 DOI: 10.1371/journal.pone.0101769] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 06/10/2014] [Indexed: 11/18/2022] Open
Abstract
Elderly people often suffer from sarcopenia in their lower extremities, which gives rise to the increased susceptibility of fall. Comparing the mechanical properties of the knee extensor/flexors on elderly and young subjects is helpful in understanding the underlying mechanisms of the muscle aging process. However, although the stiffness of skeletal muscle has been proved to be positively correlated to its non-fatiguing contraction intensity by some existing methods, this conclusion has not been verified above 50% maximum voluntary contraction (MVC) due to the limitation of their measurement range. In this study, a vibro-ultrasound system was set up to achieve a considerably larger measurement range on muscle stiffness estimation. Its feasibility was verified on self-made silicone phantoms by comparing with the mechanical indentation method. The system was then used to assess the stiffness of vastus intermedius (VI), one of the knee extensors, on 10 healthy elderly female subjects (56.7±4.9 yr) and 10 healthy young female subjects (27.6±5.0 yr). The VI stiffness in its action direction was confirmed to be positively correlated to the % MVC level (R2 = 0.999) over the entire range of isometric contraction, i.e. from 0% MVC (relaxed state) to 100% MVC. Furthermore, it was shown that there was no significant difference between the mean VI shear modulus of the elderly and young subjects in a relaxed state (p>0.1). However, when performing step isometric contraction, the VI stiffness of young female subjects was found to be larger than that of elderly participants (p<0.001), especially at the relatively higher contraction levels. The results expanded our knowledge on the mechanical property of the elderly’s skeletal muscle and its relationship with intensity of active contraction. Furthermore, the vibro-ultrasound system has a potential to become a powerful tool for investigating the elderly’s muscle diseases.
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Affiliation(s)
- Cong-Zhi Wang
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Interdisciplinary Division of Biomedical Engineering, the Hong Kong Polytechnic University, Hong Kong, China
- Beijing Center for Mathematics and Information Interdisciplinary Sciences, Beijing, China
- * E-mail: (CZW) (CW); (YPZ) (YZ)
| | - Tian-Jie Li
- Interdisciplinary Division of Biomedical Engineering, the Hong Kong Polytechnic University, Hong Kong, China
| | - Yong-Ping Zheng
- Interdisciplinary Division of Biomedical Engineering, the Hong Kong Polytechnic University, Hong Kong, China
- * E-mail: (CZW) (CW); (YPZ) (YZ)
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Sprigle S, Sonenblum S, Conner-Kerr T. mobilityRERC state of the science conference: individualizing pressure ulcer risk and prevention strategies. Disabil Rehabil Assist Technol 2013; 8:454-61. [DOI: 10.3109/17483107.2013.823574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lai CH, Leung TK, Peng CW, Chang KH, Lai MJ, Lai WF, Chen SC. Effects of far-infrared irradiation on myofascial neck pain: a randomized, double-blind, placebo-controlled pilot study. J Altern Complement Med 2013; 20:123-9. [PMID: 24152215 DOI: 10.1089/acm.2013.0122] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The objective of this study was to determine the relative efficacy of irradiation using a device containing a far-infrared emitting ceramic powder (cFIR) for the management of chronic myofascial neck pain compared with a control treatment. DESIGN This was a randomized, double-blind, placebo-controlled pilot study. PARTICIPANTS The study comprised 48 patients with chronic, myofascial neck pain. INTERVENTION Patients were randomly assigned to the experimental group or the control (sham-treatment) group. The patients in the experimental group wore a cFIR neck device for 1 week, and the control group wore an inert neck device for 1 week. MAIN OUTCOME MEASUREMENT Quantitative measurements based on a visual analogue scale (VAS) scoring of pain, a sleep quality assessment, pressure-pain threshold (PPT) testing, muscle tone and compliance analysis, and skin temperature analysis were obtained. RESULTS Both the experimental and control groups demonstrated significant improvement in pain scores. However, no statistically significant difference in the pain scores was observed between the experimental and control groups. Significant decreases in muscle stiffness in the upper regions of the trapezius muscles were reported in the experimental group after 1 week of treatment. CONCLUSIONS Short-term treatment using the cFIR neck device partly reduced muscle stiffness. Although the differences in the VAS and PPT scores for the experimental and control groups were not statistically significant, the improvement in muscle stiffness in the experimental group warrants further investigation of the long-term effects of cFIR treatment for pain management.
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Affiliation(s)
- Chien-Hung Lai
- 1 Department of Physical Medicine and Rehabilitation, School of Medicine, College of Medicine, Taipei Medical University , Taipei, Taiwan, Republic of China
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Chen SC, Lin SH, Lai MJ, Peng CW, Lai CH. Therapeutic Effects of Near-infrared Radiation on Chronic Neck Pain. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.jecm.2013.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mustalampi S, Häkkinen A, Kautiainen H, Weir A, Ylinen J. Responsiveness of Muscle Tone Characteristics to Progressive Force Production. J Strength Cond Res 2013; 27:159-65. [DOI: 10.1519/jsc.0b013e3182518023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chinese massage combined with herbal ointment for athletes with nonspecific low back pain: a randomized controlled trial. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:695726. [PMID: 23258996 PMCID: PMC3522503 DOI: 10.1155/2012/695726] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 10/16/2012] [Indexed: 11/17/2022]
Abstract
Non-specific low back pain (NLBP) is an increasing health problem for athletes. This randomized controlled trial was designed to investigate the effects of Chinese massage combined with herbal ointment for NLBP. 110 athletes with NLBP were randomly assigned to experimental group with Chinese massage combined with herbal ointment or control group with simple massage therapy. The primary outcome was pain by Chinese Short Form McGill Pain Questionnaire (C-SFMPQ). The secondary outcome was local muscle stiffness by Myotonometer. After 4 weeks, the experimental group experienced significant improvements in C-SFMPQ and in local muscle stiffness compared with control group (between-group difference in mean change from baseline, -1.24 points, P = 0.005 in sensory scores; -3.14 points, P < 0.001 in affective scores; -4.39 points, P < 0.001 in total scores; -0.64 points, P = 0.002 in VAS; -1.04 points, P = 0.005 in local muscle stiffness during relaxation state). The difference remained at one month followup, but it was only significant in affective scores (-2.83 points, P < 0.001) at three months followup. No adverse events were observed. These findings suggest that Chinese massage combined with herbal ointment may be a beneficial complementary and alternative therapy for athletes with NLBP.
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Chuang LL, Lin KC, Wu CY, Chang CW, Chen HC, Yin HP, Wang L. Relative and absolute reliabilities of the myotonometric measurements of hemiparetic arms in patients with stroke. Arch Phys Med Rehabil 2012; 94:459-66. [PMID: 22960277 DOI: 10.1016/j.apmr.2012.08.212] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 08/24/2012] [Accepted: 08/24/2012] [Indexed: 01/31/2023]
Abstract
OBJECTIVE To investigate the relative and absolute reliabilities of the myotonometer. DESIGN Psychometric study. SETTING Three medical centers. PARTICIPANTS Patients with stroke (N=61). INTERVENTIONS Not applicable. MAIN OUTCOME MEASURES Muscle tone, elasticity, and stiffness of relaxed affected deltoid, triceps brachii, biceps brachii, extensor digitorum, flexor carpi radialis, and flexor carpi ulnaris were measured twice, 30 minutes apart, using the myotonometer. Intraclass correlation coefficient, a relative reliability index, was calculated for 3 muscular properties and for each muscle to examine the degree of consistency and agreement between the 2 test sessions. Absolute reliability indices, including the SEM, smallest real difference, and Bland-Altman limits of agreement, were used to quantify measurement errors and check systematic biases of the 2 test sessions. RESULTS The intraclass correlation coefficients were .83 to .95 for muscle tone, elasticity, and stiffness of all muscle groups. The SEM and the smallest real difference of muscle tone, elasticity, and stiffness of the biceps were the smallest among the 6 muscles tested. The Bland-Altman analyses showed no systematic bias between most of the repeated measurements. Compared with other muscles, biceps had narrower limits-of-agreement ranges, indicating that the myotonometric measurements of the biceps had higher stability and less variation over time. CONCLUSIONS The myotonometer reliably measures muscular properties, with good relative and absolute reliabilities. These findings are useful for clinicians and researchers to assess muscle properties reliably and determine whether a real change has occurred in groups and on individual levels of patients with stroke.
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Affiliation(s)
- Li-Ling Chuang
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan
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Kot BCW, Zhang ZJ, Lee AWC, Leung VYF, Fu SN. Elastic modulus of muscle and tendon with shear wave ultrasound elastography: variations with different technical settings. PLoS One 2012; 7:e44348. [PMID: 22952961 PMCID: PMC3432131 DOI: 10.1371/journal.pone.0044348] [Citation(s) in RCA: 201] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 08/02/2012] [Indexed: 12/20/2022] Open
Abstract
Standardization on Shear wave ultrasound elastography (SWUE) technical settings will not only ensure that the results are accurate, but also detect any differences over time that may be attributed to true physiological changes. The present study evaluated the variations of elastic modulus of muscle and tendon using SWUE when different technical aspects were altered. The results of this study indicated that variations of elastic modulus of muscle and tendon were found when different transducer’s pressure and region of interest (ROI)’s size were applied. No significant differences in elastic modulus of the rectus femoris muscle and patellar tendon were found with different acquisition times of the SWUE sonogram. The SWUE on the muscle and tendon should be performed with the lightest transducer’s pressure, a shorter acquisition time for the SWUE sonogram, while measuring the mean elastic modulus regardless the ROI’s size.
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Affiliation(s)
- Brian Chin Wing Kot
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
- * E-mail: (BCWK); (SNF)
| | - Zhi Jie Zhang
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Arthur Wai Chun Lee
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
| | - Vivian Yee Fong Leung
- Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Siu Ngor Fu
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China
- * E-mail: (BCWK); (SNF)
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Quantitative mechanical properties of the relaxed biceps and triceps brachii muscles in patients with subacute stroke: a reliability study of the myoton-3 myometer. Stroke Res Treat 2012; 2012:617694. [PMID: 22619740 PMCID: PMC3350849 DOI: 10.1155/2012/617694] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 01/18/2012] [Accepted: 02/13/2012] [Indexed: 01/30/2023] Open
Abstract
Objective. Test-retest reliability of the myotonometer was investigated in patients with subacute stroke. Methods. Twelve patients with substroke (3 to 9 months poststroke) were examined in standardized testing position twice, 60 minutes apart, with the Myoton-3 myometer to measure tone, elasticity, and stiffness of relaxed bilateral biceps and triceps brachii muscles. Intrarater reliability of muscle properties was determined using intraclass correlation coefficient (ICC), the standard error of measurement (SEM), and the minimal detectable change (MDC). Results. Intrarater reliability of muscle properties of bilateral biceps and triceps brachii muscles were good (ICCs = 0.79–0.96) except for unaffected biceps tone (ICC = 0.72). The SEM and MDC of bilateral biceps and triceps brachii muscles indicated small measurement error (SEM% <10%, MDC% <25%). Conclusion. The Myoton-3 myometer is a reliable tool for quantifying muscle tone, elasticity, and stiffness of the biceps and triceps brachii in patients with subacute stroke.
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Aird L, Samuel D, Stokes M. Quadriceps muscle tone, elasticity and stiffness in older males: reliability and symmetry using the MyotonPRO. Arch Gerontol Geriatr 2012; 55:e31-9. [PMID: 22503549 DOI: 10.1016/j.archger.2012.03.005] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 03/16/2012] [Indexed: 12/25/2022]
Abstract
BACKGROUND The MyotonPRO (Myoton Ltd; London) is a new portable device for measuring muscle mechanical properties (e.g. tone) and its reliability has yet to be established. Little is known about between-limb symmetry of mechanical properties in healthy older people, despite symmetry often being used as a measure of unilateral abnormalities in clinical assessment. Since quadriceps is important for mobility, it was selected for the present study. AIMS To investigate: (i) between-day intra-rater reliability of a novice user of MyotonPRO; (ii) between-side symmetry of mechanical properties of quadriceps in older males. METHODS Twenty healthy, community dwelling, right-lower-limb-dominant males (mean age 71.7, range 65-82 years) were studied. With the participant in relaxed supine lying, the MyotonPRO applied two consecutive sets of 10 taps to induce muscle oscillations of rectus femoris, from which measurements of decrement (elasticity), frequency (tone), and stiffness were obtained. Tests were performed on two occasions at the same time and day of the week, one week apart. RESULTS Repeated measurements had very high within-day (intraclass correlation coefficient, ICC 3,1>0.90) and high between-day (ICC 3,2>0.70; mean of two measurement sets) reliability. There was no statistically significant difference between muscle mechanical properties of the dominant and non-dominant muscles (<2.5% difference; p>0.05), thereby indicating symmetry. CONCLUSIONS High intra-rater reliability was established for MyotonPRO measurements of quadriceps in healthy older males, which were symmetrical between sides. These findings indicate that larger studies are warranted to establish normal reference ranges of data with which to compare patients with muscle abnormalities.
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Affiliation(s)
- Lucy Aird
- Faculty of Health Sciences, Building 45, Burgess Road, University of Southampton, Highfield Campus, Southampton SO17 1BJ, United Kingdom
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Yang JL, Chen SY, Hsieh CL, Lin JJ. Effects and predictors of shoulder muscle massage for patients with posterior shoulder tightness. BMC Musculoskelet Disord 2012; 13:46. [PMID: 22449170 PMCID: PMC3339516 DOI: 10.1186/1471-2474-13-46] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Accepted: 03/27/2012] [Indexed: 11/10/2022] Open
Abstract
Background Clinical approaches like mobilization, stretching, and/or massage may decrease shoulder tightness and improve symptoms in subjects with stiff shoulders. We investigated the effect and predictors of effectiveness of massage in the treatment of patients with posterior shoulder tightness. Methods A randomized controlled trial was conducted in a hospital-based outpatient practice (orthopedic and rehabilitation). Forty-three women and 17 men (mean age = 54 years, range 43-73 years) with posterior shoulder tightness participated and were randomized into massage and control groups (n = 30 per group). A physical therapist provided the massage on the posterior deltoid, infraspinatus, and teres minor of the involved shoulder for 18 minutes [about 6 minutes for each muscle] two times a week for 4 weeks. For the control group, one therapist applied light hand touch on the muscles 10 minutes two times a week for 4 weeks. Glenohumeral internal rotation ROM, functional status, and muscle tightness were the main outcomes. Additionally, the potential factors on the effectiveness of massage were analyzed by multivariate logistic regression. For this analysis, patients with functional score improvement at least 20% after massage were considered responsive, and the others were considered nonresponsive. Results Fifty-two patients completed the study (29 for the massage and 23 for the control). The overall mean internal rotation ROM increased significantly in the massage group compared to the control (54.9° v.s. 34.9°; P ≤ 0.001). There were 21 patients in the responsive group and 8 in the nonresponsive group. Among the factors, duration of symptoms, functional score, and posterior deltoid tightness were significant predictors of effectiveness of massage. Conclusions Massage was an effective treatment for patients with posterior shoulder tightness, but was less effective in patients with longer duration of symptoms, higher functional limitation, and less posterior deltoid tightness. Trial registration This clinical trial is registered at Trial Registration "Trial registration: Clinicaltrials.gov NCT01022827".
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Affiliation(s)
- Jing-lan Yang
- Department of Physical Medicine & Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan
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Yang MH, Li M, Dou YQ, Liu Y, Luo XD, Chen JZ, Shi HJ. [Effects of Bushen Huoxue Granule on motor function in patients with Parkinson's disease: a multicenter, randomized, double-blind and placebo-controlled trial]. ACTA ACUST UNITED AC 2012; 8:231-7. [PMID: 20226144 DOI: 10.3736/jcim20100306] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND The main clinical symptoms of Parkinson's disease (PD) are resting tremor, muscle rigidity, bradykinesia, and so on. There is no effective treatment for PD yet, and dyskinesia symptoms affect the life qualities of PD patients. The therapy used for reinforcing kidney and activating blood circulation in treatment of PD can achieve good clinical effects. OBJECTIVE To evaluate the efficacy and safety of Bushen Huoxue Granule (BSHXG), a compound traditional Chinese herbal medicine for reinforcing kidney and activating blood circulation in treatment of PD. DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS A multi-center, randomized, double-blind, placebo-controlled clinical study was undertaken. A total of 120 PD patients from Outpatient Department of General Hospital of People's Liberation Army, Guangdong Provincial Hospital of Traditional Chinese Medicine, and Xijing Hospital and Tangdu Hospital in Xi'an, were randomly divided into BSHXG group and placebo group. There were 55 cases in BSHXG group, for 5 cases lost to follow-up, and 51 cases in placebo group, for 1 case was excluded and 8 cases lost to follow-up. The patients in two groups were all treated for three months. MAIN OUTCOME MEASURES The movement scale, exercise testing, and muscle tension were observed before and after treatment to make a comprehensive evaluation for clinical efficacy. One month follow-up was also made. RESULTS At three different times (one, two and three months) after treatment, the score of Unified Parkinson's Disease Rating Scale (UPDRS) III, rise time of 10-meter back and forth exercise and resting muscle tension in BSHXG group were improved as compared with before treatment (P<0.05, P<0.01), and there was an interaction between treatment time and intervention (P<0.05, P<0.01). There were no differences in evaluation results of chronograph movement (times of left and right hand movement in one minute), and walking time and turn around time of 10-meter back and forth exercise between BSHXG group and placebo group, and no interaction existed between treatment time and intervention. BSHXG showed a better efficacy than the placebo (P<0.01) in improving motor function, shortening rise time of 10-meter back and forth test and relieving muscle tension. No adverse effects were found in this trial. CONCLUSION BSHXG plus Western medicine is effective and safe in improving motor dysfunction of PD patients.
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Affiliation(s)
- Ming-hui Yang
- Institute of Traditional Chinese Medicine, General Hospital of People's Liberation Army, Beijing 100853, China
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Lacourpaille L, Hug F, Bouillard K, Hogrel JY, Nordez A. Supersonic shear imaging provides a reliable measurement of resting muscle shear elastic modulus. Physiol Meas 2012; 33:N19-28. [PMID: 22370174 DOI: 10.1088/0967-3334/33/3/n19] [Citation(s) in RCA: 178] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The aim of the present study was to assess the reliability of shear elastic modulus measurements performed using supersonic shear imaging (SSI) in nine resting muscles (i.e. gastrocnemius medialis, tibialis anterior, vastus lateralis, rectus femoris, triceps brachii, biceps brachii, brachioradialis, adductor pollicis obliquus and abductor digiti minimi) of different architectures and typologies. Thirty healthy subjects were randomly assigned to the intra-session reliability (n = 20), inter-day reliability (n = 21) and the inter-observer reliability (n = 16) experiments. Muscle shear elastic modulus ranged from 2.99 (gastrocnemius medialis) to 4.50 kPa (adductor digiti minimi and tibialis anterior). On the whole, very good reliability was observed, with a coefficient of variation (CV) ranging from 4.6% to 8%, except for the inter-operator reliability of adductor pollicis obliquus (CV = 11.5%). The intraclass correlation coefficients were good (0.871 ± 0.045 for the intra-session reliability, 0.815 ± 0.065 for the inter-day reliability and 0.709 ± 0.141 for the inter-observer reliability). Both the reliability and the ease of use of SSI make it a potentially interesting technique that would be of benefit to fundamental, applied and clinical research projects that need an accurate assessment of muscle mechanical properties.
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Affiliation(s)
- Lilian Lacourpaille
- EA 4334 Motricité, Interactions, Performance, Université de Nantes, Nantes, France
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Chuang LL, Wu CY, Lin KC. Reliability, validity, and responsiveness of myotonometric measurement of muscle tone, elasticity, and stiffness in patients with stroke. Arch Phys Med Rehabil 2012; 93:532-40. [PMID: 22222143 DOI: 10.1016/j.apmr.2011.09.014] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2011] [Revised: 09/09/2011] [Accepted: 09/15/2011] [Indexed: 10/14/2022]
Abstract
OBJECTIVE To assess the metric properties of a myotonometer. DESIGN Metric study. SETTING Three medical centers. PARTICIPANTS Stroke patients (N=67). INTERVENTION Upper-extremity rehabilitation programs. MAIN OUTCOME MEASURES The tone, elasticity, and stiffness of relaxed extensor digitorum, flexor carpi radialis, and flexor carpi ulnaris were measured using the myotonometer. Fifty-eight patients completed the myotonometer measures twice at pretreatment. The myotonometric measurement and the criteria measures, including hand strength (grip, lateral pinch, and palmar pinch strength) and Action Research Arm Test (ARAT) were administered at pretreatment and posttreatment. RESULTS The myotonometer showed high test-retest reliability for muscle properties in 3 muscles. Significant correlations existed between the tone and stiffness of the 3 muscles and palmar pinch strength, between those of the flexor carpi muscles and lateral pinch strength, and between those of the flexor carpi radialis and the ARAT at posttreatment. The posttreatment elasticity of the 2 flexor carpi muscles was significantly correlated with grip strength. The pretreatment elasticity of the flexor carpi ulnaris was significantly correlated with posttreatment grip strength, and the pretreatment muscle tone and stiffness of the flexor carpi radialis were significantly correlated with palmar pinch strength and the ARAT. The responsiveness of the extensor digitorum was higher than that of the flexor carpi radialis and ulnaris. Muscle stiffness was more responsive than tone and elasticity in 3 muscles. CONCLUSIONS Myotonometry can be a reliable, valid, and responsive outcome measure for assessing muscle properties after stroke rehabilitation.
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Affiliation(s)
- Li-ling Chuang
- School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan
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Bae SH, Kim KY. The Effect of Vibratory Stimulation on Tissue Compliance and Muscle Activity in Elbow Flexor Spasticity. J Phys Ther Sci 2012. [DOI: 10.1589/jpts.24.751] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Sea Hyun Bae
- Department of Physical Therapy, Gwangju Heemang Hospital
| | - Kyung Yoon Kim
- Department of Physical Therapy, College of Health and Welfare, Dongshin University
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