{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T07:09:30Z","timestamp":1789456170817,"version":"build-2803163510"},"reference-count":35,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T00:00:00Z","timestamp":1788998400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T00:00:00Z","timestamp":1789430400000},"content-version":"vor","delay-in-days":5,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100004503","name":"Benha University","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100004503","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Sports Sci Med Rehabil"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Backgroun<\/jats:title>\n                    <jats:p>Speed, Agility, and Quickness (SAQ) training and small-sided games (SSGs) are widely used in youth football but impose different physical and football-specific demands. Evidence directly comparing their cardiovascular responses following a structured training intervention remains limited.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>To compare cardiovascular response patterns following an 8-week SAQ or SSG training programme in male youth football players.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>\n                      Thirty-six male youth football players were randomly allocated to an SAQ group (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200918) or an SSG group (\n                      <jats:italic>n<\/jats:italic>\n                      \u2009=\u200918). Cardiovascular outcomes were assessed before and after the 8-week intervention and included resting heart rate (HR), post-shuttle-run HR, systolic blood pressure (SBP), and diastolic blood pressure (DBP). Pre-to-post changes were examined using a two-way mixed-design analysis of variance, with time as the within-subject factor and group as the between-subject factor.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Both groups demonstrated reductions in all four cardiovascular outcomes. Significant time \u00d7 group interactions were observed for resting HR, post-shuttle-run HR, SBP, and DBP. SSG training produced greater numerical reductions in resting HR, SBP, and DBP, whereas SAQ training produced a slightly greater reduction in post-shuttle-run HR.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The findings indicate different cardiovascular response patterns following SAQ and SSG training rather than universal superiority of either modality. SSGs may be useful when cardiovascular conditioning is integrated with football-specific technical and tactical demands, whereas SAQ training provides a more targeted stimulus for acceleration, agility, and neuromuscular performance.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration<\/jats:title>\n                    <jats:p>ClinicalTrials.gov NCT07633210, registered on 03\/06\/2026. Retrospectively registered.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s13102-026-02048-2","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T06:35:47Z","timestamp":1789022147000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Comparative changes in cardiovascular measures following speed, agility, and quickness training and small-sided games in youth football players: a randomized trial"],"prefix":"10.1186","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0295-9683","authenticated-orcid":false,"given":"Mahmoud","family":"Al Sayed","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Meselhy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohamed","family":"Bakr","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"issue":"5","key":"2048_CR1","doi-asserted-by":"publisher","first-page":"313","DOI":"10.1007\/s40279-013-0029-x","volume":"43","author":"M Buchheit","year":"2013","unstructured":"Buchheit M, Laursen PB. 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