{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T12:08:10Z","timestamp":1779883690824,"version":"3.53.1"},"reference-count":52,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T00:00:00Z","timestamp":1758240000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"\nPurpose<\/jats:title>\nThis study compared the effects of sprint interval training (SIT) versus high-intensity interval training (HIIT) on repeated sprint capacity and sport-specific performance in male tennis players.<\/jats:p>\n<\/jats:sec>\n\nMethods<\/jats:title>\nThirty collegiate tennis players (age: 22.39\u2009\u00b1\u20091.64 years) were randomly assigned to SIT (n\u2009=\u200915) or HIIT (n\u2009=\u200915) groups for an 8-week training intervention. Performance and physiological parameters were assessed using repeated sprint ability (RSA) test, hit-and-turn tennis test, and tennis-specific endurance test. Key metrics included maximal completed level, total time to exhaustion (TTE), repeated sprint parameters (RSATT, RSAbest, Sdec), maximal oxygen uptake (V<\/mml:mi>\u02d9<\/mml:mo><\/mml:mover><\/mml:math><\/jats:alternatives><\/jats:inline-formula>O\u2082max), ventilatory efficiency, and tennis performance index.<\/jats:p>\n<\/jats:sec>\n\nResults<\/jats:title>\nSignificant group\u2009\u00d7\u2009time interactions were observed for maximal completed level (F(1, 28)=22.649, p\u2009<\u20090.001, \u03b7p2<\/jats:sup>\u2009=\u20090.89), RSATT (F(1, 28) =39.74, p\u2009<\u20090.001, \u03b7p2<\/jats:sup>\u2009=\u20090.89), and ball accuracy (F(1, 28)=13.811, p\u2009<\u20090.001, \u03b7p2<\/jats:sup>\u2009=\u20090.901). The SIT group showed greater improvements in maximal completed level (4.00\u2009\u00b1\u20090.28 vs. 2.14\u2009\u00b1\u20090.28, p\u2009<\u2009.001), RSATT (\u22124.84\u2009\u00b1\u20090.33s vs. \u22121.87\u2009\u00b1\u20090.33s, p\u2009<\u20090.001), and ball accuracy (12.85\u2009\u00b1\u20091.71% vs. 3.86\u2009\u00b1\u20091.71%, p\u2009<\u20090.001). Both groups improved significantly in V<\/mml:mi>\u02d9<\/mml:mo><\/mml:mover><\/mml:math><\/jats:alternatives><\/jats:inline-formula>O\u2082max (SIT: 52.84\u2009\u00b1\u20094.22 to 64.50\u2009\u00b1\u20093.85\u2009mL.min-1<\/jats:sup>.kg-1<\/jats:sup>; HIIT: 51.79\u2009\u00b1\u20095.15 to 59.6\u2009\u00b1\u20094.44\u2009mL.min-1<\/jats:sup>.kg-1<\/jats:sup>, p\u2009<\u20090.001) and TTE (SIT: \u03b7p2<\/jats:sup>\u2009=\u20090.825; HIIT: \u03b7p2<\/jats:sup>\u2009=\u20090.59). Time to the onset of blood lactate accumulation (OBLA) and second ventilatory threshold (VT2) showed significant main effects of time (p\u2009<\u2009.001) without group differences.<\/jats:p>\n<\/jats:sec>\n\nConclusion<\/jats:title>\nWhile both protocols improved aerobic fitness, SIT demonstrated superior effectiveness in enhancing tennis-specific performance, particularly in repeated sprint ability and technical stability. These findings suggest that SIT might be a more time-efficient training strategy for improving sport-specific performance in tennis players.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0332705","type":"journal-article","created":{"date-parts":[[2025,9,19]],"date-time":"2025-09-19T21:52:48Z","timestamp":1758318768000},"page":"e0332705","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":1,"title":["Effects of sprint interval training compared to high intensity interval training on repeated sprint capacity and sport-specific performance in college-aged male tennis 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