{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T13:54:57Z","timestamp":1787320497561,"version":"build-2736575974"},"reference-count":34,"publisher":"Human Kinetics","issue":"11","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,11,1]]},"abstract":"\n \n Purpose<\/jats:bold>\n :\n <\/jats:italic>\n To investigate the effects of volume-matched plyometric training (PT) with different frequency distributions on physical performance and muscle soreness in adolescent soccer players.\n \n Methods<\/jats:bold>\n :\n <\/jats:italic>\n Thirty-four subelite players were allocated into 2 groups: PLYO-1 (n\u2009=\u200917, age\u2009=\u200916.02 [0.26]\u00a0y) underwent 1 PT session per week, while PLYO-3 (n\u2009=\u200917, age\u2009=\u200915.81 [0.37]\u00a0y) underwent 3 volume-matched PT sessions per week. The PT program lasted 9\u00a0weeks with an initial weekly volume of \u223c55\u00a0foot contacts, increasing by 10% per week. A 7-point Likert scale was employed to assess perceived muscle soreness before and after each PT session. All players were tested for countermovement horizontal and vertical jumps, 10-m sprint, and change-of-direction (COD)\u00a0performance using the modified 505 test (505mod).\n \n Results<\/jats:bold>\n :\n <\/jats:italic>\n After the 9-week experimental period, both groups exhibited significant improvements in countermovement horizontal-jump distance (\n P<\/jats:italic>\n \u2009<\u2009.001;\n d<\/jats:italic>\n \u2009=\u2009\u22120.55) and countermovement vertical-jump variables (jump height and modified reactive strength index,\n P<\/jats:italic>\n \u2009<\u2009.001;\n d<\/jats:italic>\n \u2009=\u2009\u22120.34 and\n d<\/jats:italic>\n \u2009=\u2009\u22120.33), and 505mod time (COD deficit) (\n P<\/jats:italic>\n \u2009<\u2009.001,\n d<\/jats:italic>\n \u2009=\u20091.09). However, no improvements were observed in the 10-m sprint time for PLYO-1 and PLYO-3 (\n P<\/jats:italic>\n \u2009>\u2009.911,\n d<\/jats:italic>\n \u2009=\u2009\u22120.12). The changes in perceived muscle soreness were significantly lower for PLYO-3 compared with PLYO-1 (\n P<\/jats:italic>\n \u2009<\u2009.001,\n d<\/jats:italic>\n \u2009=\u20091.04) throughout the experimental period.\n \n Conclusions<\/jats:bold>\n :\n <\/jats:italic>\n Employing weekly volume-matched PT conducted at different frequencies can help to maintain, or even enhance, jump and COD performance while differently impacting muscle soreness.\n <\/jats:p>","DOI":"10.1123\/ijspp.2025-0006","type":"journal-article","created":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T00:59:54Z","timestamp":1758848394000},"page":"1580-1589","source":"Crossref","is-referenced-by-count":3,"title":["Essential Role of Weekly High-Frequency Plyometric Training to Enhance Physical Performance and Manage Muscle Soreness in Male Adolescent Soccer Players"],"prefix":"10.1123","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-1636-164X","authenticated-orcid":true,"given":"Michele","family":"Trapletti","sequence":"first","affiliation":[{"name":"Department of Biomedical Sciences for Health, University of Milan, Milan, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2941-937X","authenticated-orcid":true,"given":"Damiano","family":"Formenti","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7452-6855","authenticated-orcid":true,"given":"Jason","family":"Moran","sequence":"additional","affiliation":[{"name":"School of Sport, Rehabilitation, and Exercise Sciences, University of Essex, Colchester, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1389-7596","authenticated-orcid":true,"given":"Giampiero","family":"Merati","sequence":"additional","affiliation":[{"name":"Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4420-2611","authenticated-orcid":true,"given":"Fabio","family":"Esposito","sequence":"additional","affiliation":[{"name":"Department of Biomedical Sciences for Health, University of Milan, Milan, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6080-5260","authenticated-orcid":true,"given":"Athos","family":"Trecroci","sequence":"additional","affiliation":[{"name":"Department of Biomedical Sciences for Health, University of Milan, Milan, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"100","reference":[{"issue":"10","key":"r1","series-title":"Sports Med","doi-asserted-by":"publisher","first-page":"859","DOI":"10.2165\/11318370-000000000-00000","article-title":"Neuro-musculoskeletal and performance adaptations to lower-extremity plyometric training","volume":"40","author":"Markovic G","year":"2010","unstructured":"Markovic G, Mikulic P. 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