Theory and usage of tensiomyography and the analysis method for the patient with low back pain

Park, Sihwa

doi:10.12965/jer.2040420.210

Cited by 22 publications

(13 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…TMG assesses contractions of superficial muscles without any effort from the examined person. It ensures gaining fast and accurate information with no significant involvement and interference of the athletic training process [ 45 , 46 ].…”

Section: Introductionmentioning

confidence: 99%

Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography

et al. 2021

View full text Add to dashboard Cite

Studies on muscle activation time in sport after caffeine supplementation confirmed the effectiveness of caffeine. The novel approach was to determine whether a dose of 9 mg/kg/ body mass (b.m.) of caffeine affects the changes of contraction time and the displacement of electrically stimulated muscle (gastrocnemius medialis) in professional athletes who regularly consume products rich in caffeine and do not comply with the caffeine discontinuation period requirements. The study included 40 professional male handball players (age = 23.13 ± 3.51, b.m. = 93.51 ± 15.70 kg, height 191 ± 7.72, BMI = 25.89 ± 3.10). The analysis showed that in the experimental group the values of examined parameters were significantly reduced (p ≤ 0.001) (contraction time: before = 20.60 ± 2.58 ms/ after = 18.43 ± 3.05 ms; maximal displacement: before = 2.32 ± 0.80 mm/after = 1.69 ± 0.51 mm). No significant changes were found in the placebo group. The main achievement of this research was to demonstrate that caffeine at a dose of 9 mg/kg in professional athletes who regularly consume products rich in caffeine has a direct positive effect on the mechanical activity of skeletal muscle stimulated by an electric pulse.

show abstract

Section: Introductionmentioning

confidence: 99%

Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Considering that Dm varies depending on the load of strength training, the recovery time between repetitions, and the type of muscle contraction, it can be estimated that the LESS IG analyzed in this study had a higher training volume than the MORE IG. The normal curve from TMG has a steep shape, and Tc appears at short intervals [27]. Characteristically, the shape of the overall curve appears to collapse after the injury, which is due to the fact that muscle contraction does not proceed normally and rapidly [26,27].…”

Section: Discussionmentioning

confidence: 99%

“…The normal curve from TMG has a steep shape, and Tc appears at short intervals [27]. Characteristically, the shape of the overall curve appears to collapse after the injury, which is due to the fact that muscle contraction does not proceed normally and rapidly [26,27]. The two parameters enable the muscular composition of the studied muscular groups to be increased [28], correlated with the increase in the contraction time, and the decrease in the muscular displacement amplitude [12,29].…”

Section: Discussionmentioning

confidence: 99%

Effects of Knee Injury Length on Jump Inside Kick Performances of Wushu Player

et al. 2021

Self Cite

View full text Add to dashboard Cite

Background and Objectives: When performing the jump inside kick in Wushu, it is important to understand the rotation technique while in mid-air. This is because the score varies according to the mid-air rotation, and when landing after the mid-air rotation, it causes considerable injury to the knee. This study aimed to compare the differences in kinematic and kinetic variables between experienced and less experienced knee injuries in the Wushu players who perform 360°, 540°, and 720° jump inside kicks in self-taolu. Materials and Methods: The participants’ mean (SD) age was 26.12 (2.84) years old. All of them had suffered knee injuries and were all recovering and returning to training. The group was classified into a group with less than 20 months of injury experience (LESS IG, n = 6) and a group with more than 20 months of injury experience (MORE IG, n = 6). For kinematic measurements, jump inside kicks at three rotations were assessed by using high-speed cameras. For kinetic measurements, the contraction time and maximal displacement of tensiomyography were assessed in the vastus lateralis, vastus medialis, rectus femoris, biceps femoris, gastrocnemius lateralis, gastrocnemius medialis, and tibialis anterior. The peak torque, work per repetition, fatigue index, and total work of isokinetic moments were assessed using knee extension/flexion, ankle inversion/eversion, and ankle plantarflexion/dorsiflexion tests. Results: Although there was no difference at the low difficulty level (360°), there were significant differences at the higher difficulty levels (540° and 720°) between the LESS IG and the MORE IG. For distance and time, the LESS IG had a shorter jump distance, but a faster rotation time compared to those in the MORE IG. Due to the characteristics of the jump inside kick’s rotation to the left, the static and dynamic muscle contractility properties were mainly found to be higher in the left lower extremity than in the right lower extremity, and higher in the LESS IG than in the MORE IG. In addition, this study observed that the ankle plantarflexor in the LESS IG was significantly higher than that in the MORE IG. Conclusion: To become a world-class self-taolu athlete while avoiding knee injuries, it is necessary to develop the static and dynamic myofunctions of the lower extremities required for jumping. Moreover, it is considered desirable to train by focusing on the vertical height and the amount of rotation during jumping.

show abstract

“…The included studies evaluated the BF, RF, vastus lateralis (VL), vastus medialis (VM), semitendinosus (ST), and medial gastrocnemius (GM) muscles and the Dm, Tc, Td, Ts, Tr, Vrn, Vrd, Vc10 and Vc90 TMG measurement variables. For the analysis, Vrn was converted into Tc using the formula 24 . Vc90 was calculated using to determine the muscle contraction velocity 7 .…”

Section: Literature Reviewmentioning

confidence: 99%

Tensiomyography Variable Trend of Changes After Acute Muscle Fatigue Induced by Acute Exercise: a Systematic Review and Meta-analysis

Yeom

Lee

Jeon

2021

Preprint

View full text Add to dashboard Cite

Tensiomyography (TMG) has advantage in measuring fatigue. However, no studies have used a meta-analysis approach to analyze the trend of changes in TMG variables for acute muscle fatigue induced by an acute exercise. This study is the first systematic review and meta-analysis to establish criteria for measuring acute fatigue using TMG by quantifying trend of changes in TMG variables. Searches were conducted in Web of Science and Pubmed from December 6, 2020 to January 7, 2021. 16 studies were included that they used in TMG for measuring acute muscle fatigue that was caused by acute exercises in rectus femoris or biceps femoris. The meta-analysis results indicated that in the biceps femoris, showed a significant (p < .05) decrease in all TMG variables of the elite athletes. Also, in the overall effects of maximum displacement and mean velocity until 90% Dm (Vc90) showed significant (p < .05) decreasing trend. In the rectus femoris, showed a significant (p < .05) decreasing trend was found for maximum displacement (Dm) in the average person, while contraction time (Tc) showed a decreasing trend in elite athletes and overall. In conclusion, acute muscle fatigue was induced decreased Dm, Tc, Vc90 in the TMG measurement after an acute exercise. These results TMG could be used as a muscle fatigue indicator and help develop a more proper protocol for testing the response of body to muscle fatigue.

show abstract

Theory and usage of tensiomyography and the analysis method for the patient with low back pain

Cited by 22 publications

References 38 publications

Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography

Caffeine-Induced Effects on Human Skeletal Muscle Contraction Time and Maximal Displacement Measured by Tensiomyography

Effects of Knee Injury Length on Jump Inside Kick Performances of Wushu Player

Tensiomyography Variable Trend of Changes After Acute Muscle Fatigue Induced by Acute Exercise: a Systematic Review and Meta-analysis

Contact Info

Product

Resources

About