SynthesisFrontiers in physiology2026
Effects of high-intensity interval training on cardiorespiratory fitness, jump, and sprint performance in male under-20 soccer players: a systematic review.
Synthesis in Frontiers in physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background and objectives: This systematic review and meta-analysis aimed to examine the effects of high-intensity interval training (HIIT) on cardiorespiratory fitness, jump performance and sprint performance in male under-20 soccer players. Materials and methods: A systematic search was conducted across PubMed, Medline, SportDiscus, CINAHL Complete, Scopus, and Web of Science up to March 2026. The review followed PRISMA guidelines and was prospectively registered in PROSPERO. Eligible studies were randomized controlled trials involving male soccer players younger than 20 years exposed to HIIT interventions. Methodological quality was assessed using the TESTEX scale, risk of bias with RoB 2, and certainty of evidence with GRADE. Results: Eight randomized controlled trials involving 203 participants were included. Interventions lasted 5 to 12 weeks, with two to three sessions per week. Meta-analysis showed that HIIT significantly improved VO Conclusions: HIIT may improve selected physical performance outcomes, particularly VO Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=1167616, identifier CRD420251167616.
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