Forty-eight volunteers’ well-trained male cyclists were evaluated during the competition season within a recovery microcycle. Tensiomyography was used before and after performing an incremental test until exhaustion in cycle ergometer to measure the radial muscle belly displacement of the vastus lateralis (VL), rectus femoris (RF), and biceps femoris (BF) on the dominant leg. Maximum radial muscle belly displacement (Dm), contraction time (Tc), delay time (Td), sustain time (Ts), and radial displacement velocity (Vrd) were measured. Mixed-design factorial analysis of variance was used to detect changes in the mechanical and neuromuscular characteristics after a maximal incremental exercise test.
Background: There have been still few objective outcome measures regarding the effect of botulinum toxin type A treatment. Tensiomyography (TMG) is used as a device that can non-invasively evaluate skeletal muscle, however, no reports have been found that the effects of botulinum toxin type A treatment have been evaluated by the characteristics of muscle contraction using TMG.
Objective: To evaluate the clinical usefulness of quantitative assessment using TMG before and after injection of botulinum toxin type A in patients after stroke.
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We’re proud to announce that Tensiomyography has been used in over 160 scientific publications! The first article was published in 1997 by professor Valenčič from the University of Ljubljana.
Tensiomyography as a method which precisely measures the speed of muscle contraction and muscle stiffness, has been applied in the fields of Anatomy, Anthropology, Biochemistry, Biology, Cardiology, Embryology, Medicine, Neurology, Nutrition, Pathology and Physiology.
Check out the full list of publications HERE!
Measurement of muscle specific contractile properties in response to resistance training (RT) can provide practitioners valuable information regarding physiological status of individuals. Field based measurements of such contractile properties within specific muscle groups, could be beneficial when monitoring efficacy of training or rehabilitation interventions. Tensiomyography (TMG) quantifies contractile properties of individual muscles via an electrically stimulated twitch contraction and may serve as a viable option in the aforementioned applications. Thus, aims of this study were; (i) to investigate the potential use of TMG to quantify training adaptations and differences, in response to exercise specific lower limb RT; and (ii) investigate any associations between TMG parameters and accompanying muscle architectural measures.
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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
Read more: http://casopisi.junis.ni.ac.rs/index.php/FUPhysEdSport/article/view/5320/0
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.
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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Irineu Loturco describes Tensiomyography (TMG) as a very practical and useful method; however, in his facilities, due to their natural expertise and objectives, they primarily use Tensiomyography TMG to provide insight into muscle fatigue, readiness for training, and training adaptations.
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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.