{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T07:14:58Z","timestamp":1783667698561,"version":"3.55.0"},"reference-count":39,"publisher":"Journal of Sports Science and Medicine","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["jsportscimed"],"abstract":"<jats:p>&lt;p&gt;Cardiac strain and myocardial work indices may provide additional information for performance stratification beyond traditional physiological assessments in martial arts, but their relevance to anaerobic and neuromotor performance remains insufficiently defined. This cross-sectional observational predictive modeling study assessed whether echocardiographic myocardial efficiency indices were associated with performance classification among national-level martial artists. A total of 180 athletes were assessed, and the primary comparative analysis used the top and bottom tertiles of a composite performance score to define higher-performance athletes and a lower-performance internal reference group, respectively, rather than a non-athlete control group. Echocardiographic indices included global longitudinal strain (GLS), global work efficiency (GWE), global wasted work (GWW), and myocardial performance index (MPI). Performance outcomes included Wingate anaerobic power, agility time, reaction time, Balance Error Scoring System (BESS) errors, and Finger-to-Nose Alternation Test (FTNAT) coordination. Higher-performance athletes showed greater peak power than the lower-performance reference group (11.7 \u00b1 1.3 vs. 9.3 \u00b1 1.2 W\/kg, p = 0.002), faster agility time (9.0 \u00b1 0.7 vs. 10.6 \u00b1 0.9 s, p = 0.001), and higher technical execution scores (8.4 \u00b1 1.0 vs. 5.6 \u00b1 1.4, p = 0.001). GLS magnitude was greater across myocardial segments, GWE was higher (96.8% vs. 92.1%, p = 0.002), and GWW was lower (9.4% vs. 13.2%, p = 0.003). GLS and GWE were associated with group classification in regression models, while lower MPI values were associated with shorter agility times and fewer balance errors, indicating better performance direction for both outcomes. These findings suggest that cardiac strain and myocardial work indices are associated with anaerobic and neuromotor performance in martial artists; however, longitudinal validation is required before these measures can be considered predictive markers for talent identification or training decisions.&lt;\/p&gt;<\/jats:p>","DOI":"10.52082\/jssm.2026.569","type":"journal-article","created":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T06:39:44Z","timestamp":1783665584000},"page":"569-585","source":"Crossref","is-referenced-by-count":0,"title":["Predictive Effect of Echocardiographic Assessment of Myocardial Efficiency on Martial Arts Performance"],"prefix":"10.52082","author":[{"given":"Honghong","family":"Song","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"29163","published-online":{"date-parts":[[2026,9,1]]},"reference":[{"key":"ref0","unstructured":"Abibillaev, D.A., Kocyigit, F., Baatyrbekova, A., Abdurasulova, A.K., Osmonaliev, K.R., Satybaldyev, S.A., Ismailov, Z.K., Kydyralieva, R.B., Salibaev, O.A., Kudaiberdiev, T.Z. (2025) Cardiac remodeling and global longitudinal strain in young male competitive athletes: A comparative study across different training modes. Heart, Vessels and Transplantation 9(1)."},{"key":"ref1","unstructured":"Hidayat, R., Nasution, S. A., Parlindungan, F., Dalimunthe, N., Alvianto, S., Widjanarko, N. D. (2024) Myocardial Performance Index to assess cardiac function in autoimmune connective tissue disease: a systematic review and meta-analysis. Lupus Science &#x0026; Medicine 11(2)."},{"key":"ref2","unstructured":"Huang, J., Mitchell, A. J., Garcia, E. V., Cooke, C. D., Folks, R., Pernetz, M., Goyal, A., Piccinelli, M., Nye, J. A. (2023) Left Ventricular Strain from Myocardial Perfusion PET Imaging: Method Development and Comparison to 2-Dimensional Echocardiography. Journal of Nuclear Medicine 64(6), 932-932."},{"key":"ref3","unstructured":"Jang, Y., Choi, H., Yoon, Y. E., Jeon, J., Kim, H., Kim, J., Jeong, D., Ha, S., Hong, Y., Lee, S. A., Park, J., Choi, W., Choi, H. M., Hwang, I. C., Cho, G. Y., Chang, H. J. (2024) An Artificial Intelligence-Based Automated Echocardiographic Analysis: Enhancing Efficiency and Prognostic Evaluation in Patients With Revascularized STEMI. Korean Circulation Journal 54(11), 743-756."},{"key":"ref4","unstructured":"Jouffroy, R., Hergault, H., Antero, J., Vieillard Baron, A., Mansencal, N. (2022) Relationship between echocardiographic characteristics and cardiac biomarkers during long-distance trail running. Frontiers in Cardiovascular Medicine 9."},{"key":"ref5","unstructured":"Kandels, J., St&#x00F6;be, S., Kogel, A., Hepp, P., Riepenhof, H., Droste, J. N., Stoeggl, T., Marshall, R. P., Rudolph, U., Laufs, U., Fikenzer, S., Hagendorff, A. (2023) Effect of maximum exercise on left ventricular deformation and its correlation with cardiopulmonary exercise capacity in competitive athletes. Echo Research &#x0026; Practice 10(1), 17."},{"key":"ref6","unstructured":"Kaya, H., Asoglu, R., Afsin, A., Tibilli, H., Kurt, E., Kafadar, S., Gulacti, U., Kafadar, H. (2022) Evaluation of myocardial performance index in patients with COVID-19: An echocardiographic follow-up study. Revista Portuguesa de Cardiologia 41(6), 455-461."},{"key":"ref7","unstructured":"Lau, E. S., Di Achille, P., Kopparapu, K., Andrews, C. T., Singh, P., Reeder, C., Al-Alusi, M., Khurshid, S., Haimovich, J. S., Ellinor, P. T., Picard, M. H., Batra, P., Lubitz, S. A., Ho, J. E. (2023) Deep Learning&#x2013;Enabled Assessment of Left Heart Structure and Function Predicts Cardiovascular Outcomes. Journal of the American College of Cardiology 82(20), 1936-1948."},{"key":"ref8","unstructured":"Lee, L., Addetia, K., Singh, A. (2022) Echocardiographic Evaluation of the Athlete&#x2019;s Heart: Focused Review and Update. Current Cardiology Reports 24, 1-10."},{"key":"ref9","unstructured":"Liu, B., Suthar, K., Gerula, C.M. (2025) Echocardiographic Updates in the Assessment of Cardiomyopathy. Current Cardiology Reports 27(1), 34."},{"key":"ref10","unstructured":"MacIver, D. H., Zhang, H., Johnson, C., Papatheodorou, E., Parry-Williams, G., Sharma, S., Oxborough, D. (2024) Global longitudinal active strain energy density (GLASED): age and sex differences between young and veteran athletes. Echo Research &#x0026; Practice 11(1), 17."},{"key":"ref11","unstructured":"Alsafi, Z., Malmgren, A., Gudmundsson, P., Stagmo, M., Dencker, M. (2017) Myocardial performance index in female athletes. Cardiovascular Ultrasound 15(1), 20."},{"key":"ref12","unstructured":"Maestroni, L., Turner, A., Papadopoulos, K., Sideris, V., Read, P. (2023) . Total score of athleticism: Profiling strength and power characteristics in professional soccer players after anterior cruciate ligament reconstruction to assess readiness to return to sport. The American Journal of Sports Medicine 51(12), 3063&#x2013;3071."},{"key":"ref13","unstructured":"Martinez, M. W., Kim, J. H., Shah, A. B., Phelan, D., Emery, M. S., Wasfy, M. M., Fernandez, A. B., Bunch, T. J., Dean, P., Danielian, A., Krishnan, S., Baggish, A. L., Eijsvogels, T. M. H., Chung, E. H., Levine, B. D. (2021) Exercise-Induced Cardiovascular Adaptations and Approach to Exercise and Cardiovascular Disease. Journal of the American College of Cardiology 78(14), 1453-1470."},{"key":"ref14","unstructured":"Mukhopadhyay, K. (2024) Echocardiographic Insights into Left Ventricular Functional Adaptation in Track and Field Athletes: A Comprehensive Review. Open Access Journal of Kinesiology and Sports Medicine 2, 1-11."},{"key":"ref15","unstructured":"Murray, J., Bennett, H., Bezak, E., Perry, R., Boyle, T. (2022) The effect of exercise on left ventricular global longitudinal strain. European Journal of Applied Physiology 122(6), 1397-1408."},{"key":"ref16","unstructured":"Oxborough, D., George, K., Cooper, R., Bhatia, R., Ramcharan, T., Zaidi, A., Gati, S., Prakash, K., Rakhit, D., Robinson, S., Stuart, G., Forster, J., Ackrill, M., Augustine, D., Malhotra, A., Papadakis, M., Castelletti, S., Pettemerides, V., Ring, L., Kenny, A., Baggish, A., Sharma, S. (2025) Echocardiography in the cardiac assessment of young athletes: a 2025 guideline from the British Society of Echocardiography (endorsed by Cardiac Risk in the Young). Echo Research &#x0026; Practice 12(1), 7-7."},{"key":"ref17","unstructured":"Palermi, S., Sperlongano, S., Mandoli, G. E., Pastore, M. C., Lisi, M., Benfari, G., Ilardi, F., Malagoli, A., Russo, V., Ciampi, Q., Cameli, M., D&#x2019;Andrea, A. (2023) Exercise Stress Echocardiography in Athletes: Applications, Methodology, and Challenges. Journal of Clinical Medicine 12, 7678-7678."},{"key":"ref18","unstructured":"Randazzo, M., Kanelidis, A., Kalantari, S., Smith, B., Nguyen, A., Chung, B., Swat, S., Sarswat, N., Salerno, C., Jeevanandam, V., Kim, G., Belkin, M., Grinstein, J. (2024) Myocardial Performance Score: A Novel Marker of Cardiac Power and Efficiency for Prognostication of Advanced Heart Failure. Circulation 150(Suppl_1), A4142993-A4142993."},{"key":"ref19","unstructured":"Sassi, R.H., Dardouri, W., Yahmed, M.H., Gmada, N., Mahfoudhi, M.E., Gharbi, Z. (2009) Relative and absolute reliability of a modified agility T-test and its relationship with vertical jump and straight sprint. Journal of Strength and Conditioning Research 23(6), 1644-1651."},{"key":"ref20","unstructured":"Schellenberg, J., Ahathaller, M., Matits, L., Kirsten, J., Kersten, J., Steinacker, J.M. (2023a) (2023a) Left Ventricular Global Longitudinal Strain as a Parameter of Mild Myocardial Dysfunction in Athletes after COVID-19. Journal of Cardiovascular Development and Disease 10(5)."},{"key":"ref21","unstructured":"Schellenberg, J., Matits, L., Bizjak, D. A., Kersten, J., Kirsten, J., Vollrath, S., Steinacker, J. M. (2023b) (2023b) Assessment of myocardial function and cardiac performance using left ventricular global longitudinal strain in athletes after COVID-19: a follow-up study. Frontiers in Cardiovascular Medicine 10."},{"key":"ref22","unstructured":"Bar-Or, O. (1987) The Wingate anaerobic test. An update on methodology, reliability and validity. Sports Medicine 4(6), 381-394."},{"key":"ref23","unstructured":"Spanakis, M., Fragkiadaki, P., Renieri, E., Vakonaki, E., Fragkiadoulaki, I., Alegakis, A., Kiriakakis, M., Panagiotou, N., Ovchinnikova, M. A., Tsatsakis, A. (2024) Advancing athletic assessment by integrating conventional methods with cutting-edge biomedical technologies for comprehensive performance, wellness, and longevity insights. Frontiers in Sports and Active Living 5."},{"key":"ref24","unstructured":"Turner, A. N. (2014). Total score of athleticism: A strategy for assessing\r\nan athlete's athleticism. Professional Strength & Conditioning\r\n33, 13\u201317. Retrieved from https:\/\/www.researchgate.net\/publication\/264457779_Total_Score_of_Athleticism_a_strategy_for_assessing_an_athlete%27s_athleticism"},{"key":"ref25","unstructured":"Tyurina, L.G., Khamidova, L.T., Rybalko, N.V., Gazaryan, G.A. (2024) The Importance of Echocardiographic Assessment of Early Systolic Prolongation in the Diagnosis of Acute Forms of Coronary Heart Disease. Medical Alphabet (35), 7-14."},{"key":"ref26","unstructured":"Wang, N., Rueter, P., Hibbert, T., Ng, M., Chandramohan, S., Osullivan, J., Kaye, D., Lal, S. (2024) Echocardiographic predictors of cardiovascular outcome in heart failure with preserved ejection fraction. European Heart Journal 45(Supplement_1), ehae666.793-ehae666.793."},{"key":"ref27","unstructured":"Wang, Y., Yin, L. (2024) Normal reference of myocardial work during exercise stress echocardiography and the doubt about wasted work. European Heart Journal 45(Supplement_1), ehae666.051-ehae666.051."},{"key":"ref28","unstructured":"Welford, A.T. (1986) Note on the Effects of Practice on Reaction Times. Journal of Motor Behavior 18(3), 343-345."},{"key":"ref29","unstructured":"Yang, J., You, F., Wang, J. (2024) Value of Echocardiographic Evaluation of Myocardial Performance Index in Predicting Major Adverse Cardiovascular Events Within 1 Year after Percutaneous Coronary Intervention in Patients with Coronary Heart Disease. The Heart Surgery Forum 27(7), E750-E756."},{"key":"ref30","unstructured":"Yasheng, Z., Zhao, R., Zhu, Y., Zhang, Z., Lv, Q., Xie, M., Zhang, L. (2025) Machine learning in echocardiography-based prediction model of cardiovascular diseases. Chinese Medical Journal 138(2)."},{"key":"ref31","unstructured":"Zhao, K., Liu, Y., Dong, L., Gao, B. (2022) Echocardiographic myocardial work in pre-adolescent male basketball players: a comparison with cardiopulmonary exercise test-derived aerobic capacity. Frontiers in Physiology 13."},{"key":"ref32","unstructured":"Zholshybek, N., Khamitova, Z., Toktarbay, B., Jumadilova, D., Khissamutdinov, N., Dautov, T., Rakhmanov, Y., Bekbossynova, M., Gaipov, A., Salustri, A. (2023) Cardiac imaging in athlete&#x2019;s heart: current status and future prospects. Cardiovascular Ultrasound 21(1), 21."},{"key":"ref33","unstructured":"Bell, D.R., Guskiewicz, K.M., Clark, M.A., Padua, D.A. (2011) Systematic review of the balance error scoring system. Sports Health 3(3), 287-295."},{"key":"ref34","unstructured":"Claessen, G., De Bosscher, R., Janssens, K., Young, P., Dausin, C., Claeys, M., Claus, P., Goetschalckx, K., Bogaert, J., Mitchell, A.M., Flannery, M.D., Elliott, A.D., Yu, C., Ghekiere, O., Robyns, T., Van De Heyning, C.M., Sanders, P., Kalman, J.M., Ohanian, M., Soka, M., Rath, E., Giannoulatou, E., Johnson, R., Lacaze, P., Herbots, L., Willems, R., Fatkin, D., Heidbuchel, H., La Gerche, A., Van Soest, S., Bekhuis, Y., Pauwels, R., De Paepe, J., Hespel, P., Dymarkowski, S., Dresselaers, T., Miljoen, H., Favere, K., Paelinck, B., Vermeulen, D., Witvrouwen, I., Hansen, D., Op&#x2019;t Eijnde, B., Thijs, D., Vanvoorden, P., Lefebvre, K., D&#x2019;Ambrosio, P., Rowe, S., Paratz, E., Brosnan, M.J. (2024) Reduced Ejection Fraction in Elite Endurance Athletes: Clinical and Genetic Overlap With Dilated Cardiomyopathy. Circulation 149(18), 1405-1415."},{"key":"ref35","unstructured":"Colombo, C., Kahakura, J.C., Succi, G.M., Scarsi, A.L.G., Zorzi, A.R., Teixeira, E.C.<\/given-names><suffix>Jr<\/suffix><\/name><name><surname>Oliveira<\/surname><given-names>A.M., Faganello, G.H., Cunha, A.B.A., Mastrocola, L.E., Bortolotto, L.A. (2024) Echocardiographic analysis of male and female adolescent basketball athletes. European Journal of Preventive Cardiology 31(Supplement_1), zwae175.274-zwae175.274."},{"key":"ref36","unstructured":"D'Andrea, A., Carbone, A., Radmilovic, J., Russo, V., Di Maio, M., Cacciapuoti, F., Bossone, E., Sperlongano, S., Formisano, T., Calabr&#x00F2;, R., Galderisi, M. (2022) Myocardial Work Efficiency in Physiologic Left Ventricular Hypertrophy of Power Athletes. Journal of Cardiovascular Echography 32(3), 154-159."},{"key":"ref37","unstructured":"Erevik, C. B., Kleiven, &#x00D8;., Fr&#x00F8;ysa, V., Bj&#x00F8;rkavoll-Bergseth, M., Chivulescu, M., Kl&#x00E6;boe, L. G., Dejgaard, L., Auestad, B., Skadberg, &#x00D8;., Melberg, T., Urheim, S., Haugaa, K., Edvardsen, T., &#x00D8;rn, S. (2024) Echocardiographic assessment of myocardial efficiency predicts exercise performance. European Journal of Sport Science 24(3), 319-329."},{"key":"ref38","unstructured":"Flanagan, H., Cooper, R., George, K. P., Augustine, D. X., Malhotra, A., Paton, M. F., Robinson, S., Oxborough, D. (2023) The athlete&#x2019;s heart: insights from echocardiography. 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