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Tensiomyography

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https://www.readbyqxmd.com/read/29679246/reliability-of-tensiomyography-and-myotonometry-in-detecting-mechanical-and-contractile-characteristics-of-the-lumbar-erector-spinae-in-healthy-volunteers
#1
Christine Lohr, Klaus-Michael Braumann, Ruediger Reer, Jan Schroeder, Tobias Schmidt
PURPOSE: Tensiomyography™ (TMG) and MyotonPRO® (MMT) are two non-invasive devices for monitoring muscle contractile and mechanical characteristics. This study aimed to evaluate the test-retest reliability of TMG and MMT parameters for measuring (TMG:) muscle displacement (Dm ), contraction time (Tc ), and velocity (Vc ) and (MMT:) frequency (F), stiffness (S), and decrement (D) of the erector spinae muscles (ES) in healthy adults. A particular focus was set on the establishment of reliability measures for the previously barely evaluated secondary TMG parameter Vc ...
April 20, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29659723/age-related-slowing-of-contractile-properties-differs-between-power-endurance-and-non-athletes-a-tensiomyographic-assessment
#2
Boštjan Šimunic, Rado Pišot, Jörn Rittweger, Hans Degens
Although master athletes maintain high levels of physical activity, they also suffer from an age-related decline in skeletal muscle function. There are indications of disproportional age- and physical inactivity-induced muscle wasting between muscles. Tensiomyography is a non-invasive tool that has been used to study the effects of a variety of sports on the contraction time (Tc) in different skeletal muscles. The aim of this cross-sectional study was to assess age-related changes in the Tc of the vastus lateralis, gastrocnemius medialis and biceps femoris muscles with Tensiomyography in older non-athletes (age = 62...
April 12, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29605838/assessment-of-skeletal-muscle-contractile-properties-by-radial-displacement-the-case-for-tensiomyography
#3
Lewis J Macgregor, Angus M Hunter, Claudio Orizio, Malcolm M Fairweather, Massimiliano Ditroilo
Skeletal muscle operates as a near-constant volume system; as such muscle shortening during contraction is transversely linked to radial deformation. Therefore, to assess contractile properties of skeletal muscle, radial displacement can be evoked and measured. Mechanomyography measures muscle radial displacement and during the last 20 years, tensiomyography has become the most commonly used and widely reported technique among the various methodologies of mechanomyography. Tensiomyography has been demonstrated to reliably measure peak radial displacement during evoked muscle twitch, as well as muscle twitch speed...
March 31, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29478383/relationship-between-skeletal-muscle-contractile-properties-and-power-production-capacity-in-female-olympic-rugby-players
#4
Pedro L Valenzuela, Zigor Montalvo, G Sánchez-Martínez, Elaia Torrontegi, J De La Calle-Herrero, R Domínguez-Castells, Nicola A Maffiuletti, Pedro De La Villa
This study aimed to determine which contractile properties measured by tensiomyography (TMG) could better differentiate athletes with high- and low-power values, as well as to analyse the relationship between contractile properties and power production capacity. The contractile properties of the vastus medialis (VM), rectus femoris (RF) and vastus lateralis (VL) of an Olympic women's Rugby Sevens team (n = 14) were analysed before a Wingate test in which their peak power output (PPO) was determined. Athletes were then divided into a high-power (HP) and a low-power (LP) group...
February 24, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29451885/repeated-stimulation-inter-stimulus-interval-and-inter-electrode-distance-alters-muscle-contractile-properties-as-measured-by-tensiomyography
#5
Hannah V Wilson, Mark I Johnson, Peter Francis
CONTEXT: The influence of methodological parameters on the measurement of muscle contractile properties using Tensiomyography (TMG) has not been published. OBJECTIVE: To investigate the; (1) reliability of stimulus amplitude needed to elicit maximum muscle displacement (Dm), (2) effect of changing inter-stimulus interval on Dm (using a fixed stimulus amplitude) and contraction time (Tc), (3) the effect of changing inter-electrode distance on Dm and Tc. DESIGN: Within subject, repeated measures...
2018: PloS One
https://www.readbyqxmd.com/read/29284166/functional-screening-tests-interrelationships-and-ability-to-predict-vertical-jump-performance
#6
Irineu Loturco, Lucas Adriano Pereira, Ronaldo Kobal, Cesar Cavinato Cal Abad, William Komatsu, Ronaldo Cunha, Gustavo Arliani, Benno Ejnisman, Alberto de Castro Pochini, Fábio Yuzo Nakamura, Moises Cohen
There are several methods used in sports science to identify asymmetries in athletes, given their purported relevance to injury prevention and performance optimization. We aimed to verify whether asymmetries provided by isokinetic assessments, jump tests, and tensiomyography (TMG) are associated with each other, and whether their respective functional indices are related to jumping ability. TMG parameters, unilateral and bilateral squat-jump (SJ) and countermovement-jump (CMJ) performances, and peak torque in knee-extension and flexion with angular velocities of 60o /s and 300o /s for twenty-four soccer players were retained for analyses...
February 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28944649/neuromuscular-responses-and-physiological-patterns-during-a-soccer-simulation-protocol-artificial-turf-versus-natural-grass
#7
Jorge López-Fernández, Jorge García-Unanue, Javier Sánchez-Sánchez, Manuel León, Enrique Hernando, Leonor Gallardo
BACKGROUND: Latest studies suggest similar performance of soccer players either on artificial turf (AT) or natural grass (NG). However, it is not clear if their muscular and physiological responses are also similar on both surfaces. This research aims to assess the influence of game surface on physiological patterns and neuromuscular responses of soccer players during a soccer simulation protocol (SSP) that incorporates repeated sprints and nonlinear actions at maximum speed. METHODS: Sixteen amateur soccer players completed three bouts of the SSP on both AT and NG...
September 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28930871/reliability-and-measurement-error-of-tensiomyography-to-assess-mechanical-muscle-function-a-systematic-review
#8
Saúl Martín-Rodríguez, Irineu Loturco, Angus M Hunter, David Rodríguez-Ruiz, Diego Munguia-Izquierdo
Martín-Rodríguez, S, Loturco, I, Hunter, AM, Rodríguez-Ruiz, D, and Munguia-Izquierdo, D. Reliability and measurement error of tensiomyography to assess mechanical muscle function: A systematic review. J Strength Cond Res 31(12): 3524-3536, 2017-Interest in studying mechanical skeletal muscle function through tensiomyography (TMG) has increased in recent years. This systematic review aimed to (a) report the reliability and measurement error of all TMG parameters (i.e., maximum radial displacement of the muscle belly [Dm], contraction time [Tc], delay time [Td], half-relaxation time [½ Tr], and sustained contraction time [Ts]) and (b) to provide critical reflection on how to perform accurate and appropriate measurements for informing clinicians, exercise professionals, and researchers...
December 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28832392/ischemic-preconditioning-blunts-muscle-damage-responses-induced-by-eccentric-exercise
#9
Alexander Franz, Michael Behringer, Jan-Frieder Harmsen, Constantin Mayer, Rüdiger Krauspe, Christoph Zilkens, Moritz Schumann
PURPOSE: Ischemic preconditioning (IPC) is known to reduce muscle damage induced by ischemia and reperfusion injury during surgery. Because of similarities between the pathophysiological formation of ischemia and reperfusion injury and eccentric exercise-induced muscle damage (EIMD), as characterized by an intracellular accumulation of Ca, an increased production of reactive oxygen species, and increased proinflammatory signaling, the purpose of the present study was to investigate whether IPC performed before eccentric exercise may also protect against EIMD...
January 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28828075/baseline-mechanical-and-neuromuscular-profile-of-knee-extensor-and-flexor-muscles-in-professional-soccer-players-at-the-start-of-the-pre-season
#10
Oscar García-García, Virginia Serrano-Gómez, Antonio Hernández-Mendo, Verónica Morales-Sánchez
The aim of the study was to determine the mechanical and neuromuscular profile of knee extensor and flexor muscles in professional soccer players at the start of the pre-season, and to calculate percentages for symmetry, as well as examine differences according to the player's positional role. The vastus medialis (VM), vastus lateralis (VL), rectus femoris (RF) and biceps femoris (BF) of 16 professional soccer players were evaluated by means of tensiomyography (TMG) on the first day of the pre-season. A paired-samples t test (p < ...
September 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28732494/the-effects-of-therapeutic-hip-exercise-with-abdominal-core-activation-on-recruitment-of-the-hip-muscles
#11
Mandy Ky Chan, Ka Wai Chow, Alfred Ys Lai, Noble Kc Mak, Jason Ch Sze, Sharon Mh Tsang
BACKGROUND: Core stabilization has been utilized for rehabilitation and prevention of lower limb musculoskeletal injuries. Previous studies showed that activation of the abdominal core muscles enhanced the hip muscle activity in hip extension and abduction exercises. However, the lack of the direct measurement and quantification of the activation level of the abdominal core muscles during the execution of the hip exercises affect the level of evidence to substantiate the proposed application of core exercises to promote training and rehabilitation outcome of the hip region...
July 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28704886/tensiomyographic-assessment-of-muscle-contractile-properties-in-9-to-14-year-old-children
#12
Bostjan Simunic, Hans Degens, Jernej Zavrsnik, Katja Koren, Tadeja Volmut, Rado Pisot
While there are numerous data on the skeletal muscle fiber type composition in adults, little is known about the changes in fiber type composition and contractile properties during maturational growth in children. Using noninvasive tensiomyography, we measured contraction time (Tc), an indirect estimate of the myosin heavy chain I (MHC-I) proportion, to assess the longitudinal changes of the biceps brachii (BB), biceps femois (BF), vastus lateralis (VL), and erector spinae (ES) muscles in 53 boys and 54 girls...
September 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28670284/tensiomyographic-markers-are-not-sensitive-for-monitoring-muscle-fatigue-in-elite-youth-athletes-a-pilot-study
#13
Thimo Wiewelhove, Christian Raeder, Rauno Alvaro de Paula Simola, Christoph Schneider, Alexander Döweling, Alexander Ferrauti
Objective: Tensiomyography (TMG) is an indirect measure of a muscle's contractile properties and has the potential as a technique for detecting exercise-induced skeletal muscle fatigue. Therefore, the aim of this study was to assess the sensitivity of tensiomyographic markers to identify reduced muscular performance in elite youth athletes. Methods: Fourteen male junior tennis players (age: 14.9 ± 1.2 years) with an international (International Tennis Federation) ranking position participated in this pre-post single group trial...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28538312/skeletal-muscle-contraction-time-and-tone-decrease-after-8-weeks-of-plyometric-training
#14
RANDOMIZED CONTROLLED TRIAL
Damir Zubac, Boštjan Šimunič
The aim of the study was to examine whether an improvement in jumping performance after 8 weeks of plyometric training (PT) runs in parallel with changes in lower-limb skeletal muscle contractile properties. Using noninvasive tensiomyography (TMG), we assessed contraction time (Tc) and the maximal amplitude of radial displacement (Dm) in 20 subjects (50% men; age 22.4 ± 4.7 years of age), randomly divided in PT group (N = 10; PLYO) and a control group (N = 10; CTRL). The PLYO performed 8 weeks of PT. Tensiomyography was measured in 5 leg skeletal muscles: vastus lateralis (VL), biceps femoris (BF), tibialis anterior (TA), gastrocnemius medialis (GM), and gastrocnemius lateralis (GL)...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28501988/gluteus-maximus-contraction-velocity-assessed-by-tensiomyography-improves-following-arthroscopic-treatment-of-femoroacetabular-impingement
#15
Roberto Seijas, Miguel Marín, Eila Rivera, Eduard Alentorn-Geli, David Barastegui, Pedro Álvarez-Díaz, Ramón Cugat
PURPOSE: Muscular impairment, particularly for the gluteus maximus (GM), has been observed in femoroacetabular impingement (FAI). The purpose of this study was to evaluate the tensiomyographic changes of the GM, rectus femoris (RF) and adductor longus (AL) before and after arthroscopic surgery for FAI. It was hypothesized that arthroscopic treatment of FAI would improve the preoperative muscular impairment. METHODS: All patients undergoing arthroscopic treatment of FAI between January and July 2015 were approached for eligibility...
May 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28272251/tensiomyography-sonoelastography-and-mechanosensitivity-differences-between-active-latent-and-control-low-back-myofascial-trigger-points-a-cross-sectional-study
#16
César Calvo-Lobo, Ignacio Diez-Vega, Beatriz Martínez-Pascual, Silvia Fernández-Martínez, Mónica de la Cueva-Reguera, Gerson Garrosa-Martín, David Rodríguez-Sanz
The myofascial pain syndrome (MPS) is considered the most common musculoskeletal condition. The lumbopelvic pain (LPP) is established as one of the most prevalent musculoskeletal disorders. Nevertheless, previous research has not yet studied the contractibility changes by tensiomyography between myofascial trigger point (MTrP) types and normal tissue. Therefore, the aim of this study was to determine the tensiomyography, sonoelastography, and pressure pain threshold (PPT) differences between the palpation area of active and latent MTrPs with regards to control points in the lumbar erector spinae muscles of subjects with LPP...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28255658/symmetry-tensiomyographic-neuromuscular-response-after-chronic-anterior-cruciate-ligament-acl-reconstruction
#17
Noriaki Maeda, Yukio Urabe, Syogo Tsutsumi, Hironori Fujishita, Shuhei Numano, Takuya Takeuchi, Kazuhiko Hirata, Yukio Mikami, Hiroaki Kimura
PURPOSE: Quadriceps muscle weakness is common following anterior cruciate ligament (ACL) reconstruction. Tensiomyography is a recent method to assess muscle strength, and one that also enables evaluation of individual muscles. The purpose of this study was to evaluate motor unit recruitment and investigate the effects on mechanical and contractile characteristics of the quadriceps and hamstring muscles after chronic ACL reconstruction. METHODS: This study recruited 20 participants: three males and seven females at 24 months after ACL reconstruction, and three males and seven females with no history of knee injury (control group)...
March 2, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27937967/tensiomyographical-responses-to-accelerometer-loads-in-female-collegiate-basketball-players
#18
Kyle D Peterson, Gabriela T Quiggle
The purpose of the present study was to characterise the relationship between relative versus absolute internal and external loads in collegiate basketball players throughout the course of a season. Five Division I basketball players wore triaxial accelerometers throughout the 2015-2016 season and were tensiomyographically assessed weekly. One-way repeated-measure analysis of variance (RM ANOVA) with least-significant-difference (LSD) pairwise comparisons was used to determine which absolute weekly loads were different across the season...
December 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27803627/muscle-contraction-velocity-a-suitable-approach-to-analyze-the-functional-adaptations-in-elite-soccer-players
#19
Irineu Loturco, Lucas A Pereira, Ronaldo Kobal, Katia Kitamura, Rodrigo Ramírez-Campillo, Vinicius Zanetti, Cesar C Cal Abad, Fabio Y Nakamura
Tensiomyography (TMG) has been used as a simple and non-invasive tool to assess the mechanical properties of skeletal muscles. The TMG-derived velocity of contraction (Vc), which can be calculated from the ratio between maximal radial displacement and the sum of contraction time and delay time, has been proposed for evaluating athletes. However, its sensitivity to training effects and possible relation with changes in soccer players' neuromuscular performance have not yet been addressed. To test this possibility, twenty-two male Brazilian elite soccer players were assessed using TMG-derived Vc, unloaded squat jump, countermovement jump and drop jump at 45 cm, loaded jump squat and linear (20 m) and change of direction (COD) sprint tests, prior to and after an 8-week period, between two consecutive official tournaments, during which the concurrency between endurance and strength-power training commonly impairs neuromuscular capacities...
September 2016: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/27757289/sixty-seconds-of-foam-rolling-does-not-affect-functional-flexibility-or-change-muscle-temperature-in-adolescent-athletes
#20
Andrew M Murray, Thomas W Jones, Cosmin Horobeanu, Anthony P Turner, John Sproule
BACKGROUND: Physiotherapists and other practitioners commonly prescribe foam rolling as an intervention, but the mechanistic effects of this intervention are not known. PURPOSE: The aim of this investigation was to establish if a single bout of foam rolling affects flexibility, skeletal muscle contractility and reflected temperature. METHODS: Twelve adolescent male squash players were evaluated on two separate occasions (treatment and control visits) and were tested on both legs for flexibility of the hip flexors and quadriceps, muscle contractility (as measured by tensiomyography) and temperature of the quadriceps (assessed via thermography) at repeated time points pre- and post a 60s rolling intervention (pre-, immediately post, 5, 10, 15, and 30 minutes post)...
October 2016: International Journal of Sports Physical Therapy
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