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Both intervention groups completed 3 repetitions of back-squat exercise (85% 1-repetition maximum), followed by speed bounding on either a 9\u00b0 or 0\u00b0 platform, twice weekly for 6\u00a0weeks in addition to their usual training, whereas the CON group received no intervention. The 50-m sprint test, leg muscular power, isokinetic strength of knee extensors and flexors, and the Hoffman reflex and volitional wave in soleus and gastrocnemius muscles were measured before and after the intervention. <jats:italic><jats:bold>Results<\/jats:bold>:<\/jats:italic> Following 6\u00a0weeks of training, both the\u00a0CT with incline speed bounding and the\u00a0CT with horizontal speed bounding groups displayed similar improvements (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05) in 10- and 20-m sprint times compared with prior training and the\u00a0CON group, of which the CT with incline speed bounding group showed a greater (<jats:italic>P\u2009&lt;<\/jats:italic>\u2009.05) 10-m sprint velocity. These changes were concomitant with significant increases in peak force (<jats:italic>P<\/jats:italic>\u2009&lt;\u2009.05) but not volitional wave amplitude and V:M<jats:sub>max<\/jats:sub> ratio in both muscles. However, the CON group did not show these improvements. <jats:italic><jats:bold>Conclusion<\/jats:bold>:<\/jats:italic> These findings indicate that incorporation of inclined speed bounding into CT over 6\u00a0weeks is more effective in improving sprint acceleration performance compared with horizontal CT, irrespective with Hoffman reflex modulations.<\/jats:p>","DOI":"10.1123\/ijspp.2024-0243","type":"journal-article","created":{"date-parts":[[2025,5,13]],"date-time":"2025-05-13T18:46:32Z","timestamp":1747161992000},"page":"925-933","source":"Crossref","is-referenced-by-count":0,"title":["Effects of Complex Training on Sprint Acceleration and Neuromuscular Performance in Young Male Sprinters: A Comparison Between Incline and Level Speed Bounding"],"prefix":"10.1123","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8534-0618","authenticated-orcid":true,"given":"Chanawat","family":"Sanpasitt","sequence":"first","affiliation":[{"name":"Faculty of Sports Science, Chulalongkorn University, Bangkok, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chaninchai","family":"Intiraporn","sequence":"additional","affiliation":[{"name":"College of Sports, Rangsit University, Lak-Hok, Pathumthani, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0861-7075","authenticated-orcid":true,"given":"Tossaporn","family":"Yimlamai","sequence":"additional","affiliation":[{"name":"Faculty of Sports Science, Chulalongkorn University, Bangkok, Thailand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"100","reference":[{"issue":"9","key":"r1","series-title":"J Sports Med Phys Fitness","doi-asserted-by":"publisher","first-page":"1202","DOI":"10.23736\/S0022-4707.20.11685-2","article-title":"Correlations between jump measures and competitive performance remain stable over time in top-level sprinters","volume":"61","author":"Loturco I","year":"2020","unstructured":"Loturco I, Fernandes V, Boullosa D, et\u00a0al. 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