{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,19]],"date-time":"2026-09-19T12:07:37Z","timestamp":1789819657458,"version":"4.0.1"},"reference-count":40,"publisher":"Termedia Sp. z.o.o.","license":[{"start":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T00:00:00Z","timestamp":1758585600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T00:00:00Z","timestamp":1758585600000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T00:00:00Z","timestamp":1758585600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Human Kinetics"],"abstract":"<jats:p>In official judo competitions, athletes often participate in multiple bouts with short recovery intervals, leading to progressive fatigue that impacts neuromuscular performance. This study examined the acute effects of four simulated judo bouts on bilateral strength deficit (BLD) using metrics from countermovement jumps (CMJs). Thirteen male national-level judo athletes (21.4 \u00b1 2.9 years) participated in the study. Athletes performed both unilateral and bilateral CMJs in randomized order: first at baseline before the initial match, and then after each of the four subsequent matches. The CMJ metrics evaluated included peak and mean power, jump height, peak force, peak velocity, and vertical net impulse. The study used the typical error (TE) and the intraclass correlation coefficient (ICC) to assess relative and absolute reliability. To compare CMJ metrics across the matches, the Friedman test with Conover\u2019s post hoc analysis was conducted, with statistical significance set at p &lt; 0.05. The main findings showed excellent relative reliability, with an ICC greater than 0.85 for all variables in both limbs. Significant effects of the judo matches were observed only in the CMJ impulse (which decreased after the third match) and in BLD of impulse, which increased after the third match (p &lt; 0.05). No statistically significant changes were found in other CMJ metrics. These results suggest that while successive judo bouts induced significant fatigue and force deficits, detectable through changes in impulse, other CMJ metrics remained unaffected. This may indicate that the capacity to generate force quickly in the lower limbs is primarily impacted by successive judo bouts.<\/jats:p>","DOI":"10.5114\/jhk\/202147","type":"journal-article","created":{"date-parts":[[2025,9,23]],"date-time":"2025-09-23T13:53:13Z","timestamp":1758635593000},"source":"Crossref","is-referenced-by-count":2,"title":["Effects of Multiple Judo Bouts in the Bilateral Strength Deficit \non the Countermovement Jump Metrics"],"prefix":"10.5114","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1615-5464","authenticated-orcid":false,"given":"Rafael Lima","family":"Kons","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9146-9450","authenticated-orcid":false,"given":"Jonathan","family":"Ache-Dias","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2226-1979","authenticated-orcid":false,"given":"Filipe","family":"Estacio Costa","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4084-9474","authenticated-orcid":false,"given":"Juliano","family":"Dal Pupo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6127-437X","authenticated-orcid":false,"given":"Daniele","family":"Detanico","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3061","published-online":{"date-parts":[[2025,9,23]]},"reference":[{"key":"ref-1516821","doi-asserted-by":"crossref","unstructured":"Anders, J. P. V., Keller, J. L., Neltner, T. J., Housh, T. J., Schmidt, R. J., & Johnson, G. O. (2021). Task-specific performance fatigability and the bilateral deficit during isokinetic leg extensions. Journal of Musculoskeletal & Neuronal Interactions, 21(1), 4\u201312.","DOI":"10.3233\/IES-202178"},{"key":"ref-1516822","doi-asserted-by":"publisher","DOI":"10.2165\/00007256-199826040-00002"},{"key":"ref-1516823","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000003075"},{"key":"ref-1516824","doi-asserted-by":"publisher","DOI":"10.1519\/SSC.0000000000000772"},{"key":"ref-1516825","doi-asserted-by":"publisher","DOI":"10.1080\/02640414.2010.512641"},{"key":"ref-1516826","doi-asserted-by":"publisher","DOI":"10.1519\/jsc.0b013e318238ebac"},{"key":"ref-1516827","doi-asserted-by":"publisher","DOI":"10.1152\/japplphysiol.00637.2005"},{"key":"ref-1516828","doi-asserted-by":"publisher","DOI":"10.1519\/JSC.0000000000001125"},{"key":"ref-1516829","unstructured":"Bra\u010di\u010d, M., Supej, M., Peharec, S., Ba\u010di\u0107, P., & \u0106oh, M. (2010). An investigation of the influence of bilateral deficit on the counter movement jump performance in elite sprinters. Kinesiology, 42(1), 73\u201381."},{"key":"ref-1516830","doi-asserted-by":"publisher","DOI":"10.1007\/s00421-010-1761-7"},{"key":"ref-1516831","doi-asserted-by":"crossref","unstructured":"Calmet, M., Miarka, B., & Franchini, E. (2010). Modeling approaches of grasps in judo competition contests. International Journal of Performance Analysis in Sport, 10, 229\u2013240.","DOI":"10.1080\/24748668.2010.11868518"},{"key":"ref-1516832","doi-asserted-by":"crossref","unstructured":"Detanico, D., Dal Pupo, J., Franchini, E., & Dos Santos, S. G. (2012). Relationship of aerobic and neuromuscular indexes with specific actions in judo. Science & Sports, 27(1), 16\u201322. https:\/\/doi. org\/10.1016\/j.scispo.2011.01.010.","DOI":"10.1016\/j.scispo.2011.01.010"},{"key":"ref-1516833","doi-asserted-by":"publisher","DOI":"10.1519\/jsc.0000000000000746"},{"key":"ref-1516834","unstructured":"Franchini, E., Takito, M. Y., Nakamura, F. Y., Matsushigue, K. A., & Kiss, M. P. D. M. (2003). Effects of recovery type after a judo combat on blood lactate removal and on performance in an intermittent anaerobic task. Journal of Sports Medicine and Physical Fitness, 43, 424\u2013431."},{"key":"ref-1516835","doi-asserted-by":"publisher","DOI":"10.2165\/11538580-000000000-"},{"key":"ref-1516836","doi-asserted-by":"publisher","DOI":"10.1080\/24748668.2013.11868676"},{"key":"ref-1516837","doi-asserted-by":"publisher","DOI":"10.5114\/jhk\/186976"},{"key":"ref-1516838","doi-asserted-by":"publisher","DOI":"10.2165\/00007256-200131090-00001"},{"key":"ref-1516839","doi-asserted-by":"publisher","DOI":"10.1007\/s40279-014-0253-z"},{"key":"ref-1516840","doi-asserted-by":"publisher","DOI":"10.2165\/00007256-200030010-00001"},{"key":"ref-1516841","doi-asserted-by":"publisher","DOI":"10.1152\/jappl.1991.70.1.306"},{"key":"ref-1516842","unstructured":"International Judo Federation. (2020, September 20). IJF Rules 2017\u20132020. 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