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.

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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.

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It was a busy month. We completed testing of our National football teams from U15 to U19 and WU17 to WU19. Our Tensiomyography (TMG) technology was used to assess muscle performance of our young athletes. TMG adds a clear, objective comparison of a normal muscle’s actions and a likely muscle impairment. Since the information is objective and quantified, it’s a permanent record of how the muscles trend over a season.

tmg_NZS tmg_NZS-2 tmg_NZS-3

Advances in Skeletal Muscle Function Assessment, a publication of International Society of Tensiomyography, is a peer-reviewed print + online Semiannual journal. The journal allows free access (Open Access) to its contents and permits authors to self-archive final accepted version of the articles on any OAI-compliant institutional / subject-based repository.The journal’s full text is available online at http://www.asmfa.org.

You can access the first issue here:



You can access second issue here:



Dear members of European College of Sport Science!
If you are attending ECSS congress in Prague on July 4th 2019, kindly check invitation to scientific meeting organized by International Society of TENSIOMYOGRAPHY.
The main agenda is introduction of new journal “Advances in Skeletal Muscle Function Assessment” and the opportunity for the researchers focused in this topic.
More information can be found here: http://www.asmfa.org/

Scientific meeting will take place on July 4th 2019 at 17:00 – 19:00 in CORINTHIA hotel Prague, which is just next door to ECSS venue
Contact us on info@tmg.si if you would like to attend.

Official Flyer


ACSM Annual meeting will start tomorrow in Orlando-Florida. If you are one of 5800 participants, please visit Tensiomyography (TMG) presentations during ACSM:


Room: CC-Hall WA2; Board #51; May 29 2:00 PM – 3:30 PM

Title: Tensiomyographic And Sprint Assessments Following Different Warmup Protocols In Collegiate Male Soccer Athletes

Authors: Chad H. Herring, Michael J. Redd, Tristan M. Starling-Smith,Jeffrey R. Stout, David H. Fukuda

Institution:  University of Central Florida, FL. USA


Room: CC-305; May 30 10:10 AM – 10:30 AM

Title: Pain And Function: A Ten(din)uous Link In The Runner

Authors: Peter Francis, Isobel Thornley, Ashley Jones

Institution: Leeds Beckett University, United Kingdom


Room: CC-Hall WA2; Board #46; May 30  9:30 AM – 11:00 AM

Title: The Assessment Of Muscular Characteristics Using Tensiomyography In Hemiplegic Stroke Patients

Authors: Shin Who Park, M.D., Won Kim, M.D., Kyoung Hyo Choi, M.D., Ph.D

Institution: Asan Medical Center, University of Ulsan College of Medicine, South Korea


Room: CC-Hall WA2; Board #55; May 30  2:00 PM – 3:30 PM

Title: Body Composition and Muscle Contractile Properties in Male Professional Soccer Players

Authors: Ashley Jones, Karen Hind, Ian Entwistle, Hannah V. Wilson, Peter Francis

Institutions: Musculoskeletal Health Research Group, Leeds,United Kingdom. Wolfson Research Institute, Durham, United Kingdom

An exhaustive review has been made to filter the studies that have analyzed muscle function though tensiomyography (TMG) with elite or well-trained athletes. The results of this review indicate that the several protocols used in athletes to find the displacement-time curve with greater maximum radial muscle displacement showed a good-excellent reliability.

Full article