Muscle performance assessment, made Non-invasive, objective, selective and quantifiable.

Neuromuscular characteristic of Biceps Femoris muscle in the top Serbian soccer players measured by Tensiomyography method: quantitative model

The study was performed on 54 healthy top-level soccer players.

The main aim of this study was to define the quantitative neuromuscular characteristics of Biceps Femoris muscle (BF) as the knee joint flexor, i.e. the major synergist of caudal body in all specific movement tasks of a football player, measured by tensiomyography (TMG) method . The secondary aim of the study was to compare all TMG-BF characteristics in relation to bilateral dimorphism, as well as to compare dominant and non-dominant legs

Abstract: Using Tensiomyography we evaluated a patient that had Achilles tendon rupture surgery. The contralateral normal side measurements were also performed for evaluation and comparison of the site of injury.

The occurrence of Achilles tendon rupture happens in 2% of the population per year. In recent years there has been an increased interest in middle-aged and older patients in physical conditioning and joining in with athletic activities. There are two types of Achilles tendon ruptures. One is from direct trauma and another from indirect causes. Indirect causes are more frequent and result from a combination of mechanical stress and degeneration. Achilles tendon operation results are affected by several factors like age, muscle-tendon flexibility, strength, rupture site, etc. The factors that interest us most are muscle-tendon flexibility and strength of the calf muscle. TMG can evaluate the function of skeletal muscle through contraction time (Tc), maximal displacement (Dm), and other parameters.

Full Article

A test of the rambling and trembling hypothesis.

The rambling and trembling analysis separates the center of pressure (COP) fluctuations into two components: rambling (supraspinal contribution) and trembling (muscle stiffness / reflexive properties contribution). We examined whether the trembling component is correlated to the contractile properties (muscle stiffness and contraction time) of lower limb superficial skeletal muscles to experimentally test the rambling and trembling hypothesis. We hypothesized that muscle stiffness and contraction time, would be: (a) more correlated with; and (b) have a greater impact on the trembling component compared to the rambling component. Thirty-two healthy young adults were recruited for the study and tensiomyography was used to assess mechanical muscle responses to a single electrical stimulus to calculate muscle stiffness and contraction time based on radial muscle belly displacement measurements of lower limb muscles unilaterally.

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This study aimed to evaluate the postactivation potentiation (PAP) effects following eccentric overload (EOL) exercises on change of direction (COD) performance and muscle contractile function. Muscle contractile function was assessed by tensiomyography (TMG) such as muscle contraction time (Tc), time delay (Td) and displacement of the muscle belly (Dm) of vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF). Eccentric overload exercises were: (a) cross-cutting step with inertial conical pulley (INC = 11 subjects), (b) flywheel leg extension (EXT = 10 subjects), and flywheel yo-yo squat exercise (SQU = 10 subjects). Differences baseline-post were found on COD-5mD (p < 0.001) and on COD-5mND (p < 0.001), but not between groups (p > 0.05) following EOL exercises. This study reported a significant positive PAP response after 4 minutes of recovery after EOL exercises (INC, EXT and SQU) in soccer players. For the first time, it has been reported that EOL exercises acutely affect Tensiomyography TMG variables (e.g., Tc and Td) in lower limbs. Such results related to changes in muscular contractile functions may contribute to explain the physiological mechanisms (e.g., neuromuscular factors) associated with PAP effect.

Dr. Vernon William is a famous neurological medical consultant to local professional sports organizations such as the Los Angeles Rams, Los Angeles Dodgers, Los Angeles Lakers, Los Angeles Kings and Los Angeles Sparks. Dr. Vernon William is a founding Director of Center for Sports Neurology and Pain Medicine at Cedars-Sinai Kerlan-Jobe Institute and they have published how Tensiomyography (TMG™) assessments gives them information on how muscles are working, inform how muscle function is affected and what possible limits may occur in performance.

Category Archives: news

New Tensiomyography study performed on top level soccer players

Evaluation of Calf Muscular Function During the Recovery Phase After the Repair of an Achilles Tendon Rupture

New Tensiomyography TMG publication: Contractile properties of superficial skeletal muscle affect postural control in healthy young adults

Tensiomyography TMG used by Irineu Loturco, founder and director of the Nucleus of High Performance in Sport (NAR; São Paulo, Brazil)

Acute Effect of Eccentric Overload Exercises on Change of Direction Performance and Lower-Limb Muscle Contractile Function

Cedars-Sinai Kerlan Jobe Institute uses TENSIOMYOGRAPHY to contribute to performance and optimization of nervous system function

TMG muscle assessment of National football teams from U15 to U19 and WU17 to WU19 just completed

International Society Of Tensiomyography is proud to announce that Advances in Skeletal Muscle Function Assessment journal is now re-published by Wolters Kluwer

International Society of TENSIOMYOGRAPHY at ECSS – scientific meeting in Prague – July 4th 2019

Four presentations of Tensiomyography during ACSM annual meeting

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