{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T01:58:11Z","timestamp":1792807091349,"version":"4.5.0"},"reference-count":35,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"7","content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,7]]},"abstract":"Abstract<\/jats:title>\n \n Hill, V, Patterson, S, Buckthorpe, M, and Legg, HS. The acute effects of a preload upper-body power exercise on 50-m freestyle performance in youth swimmers.\n J Strength Cond Res<\/jats:italic>\n 38(7): 1295\u20131299, 2024\u2014This study aimed to investigate the acute effects of a medicine ball slam and the optimal recovery time required to induce a postactivation performance enhancement (PAPE) response on 50-meter freestyle swimming performance. Twenty-four (13 female, 11 male) competitive, adolescent swimmers (mean \u00b1\n SD<\/jats:italic>\n : age, 16.7 \u00b1 1.2 years; height, 173.3 \u00b1 6.7 cm; mass, 63.1 \u00b1 6.4 kg) participated in a randomized crossover study. After the PAPE intervention (3 \u00d7 5 medicine ball slams), subjects had 1-minute, 4-minute, and 8-minute recovery periods before a 50-m maximal freestyle swim. A 1-way repeated-measures ANOVA revealed that different recovery times elicited changes in 50-m performance (\n F<\/jats:italic>\n = 12.12,\n p<\/jats:italic>\n < 0.0005). After 4 minutes of recovery, 50-m performance was 1.6% (0.47 seconds) faster (95% confidence interval [CI] [0.17\u20130.77],\n p<\/jats:italic>\n < 0.001). When the data were split by sex, after 4 minutes of recovery, 50-m performance was 2% (0.64 seconds) faster for women (95% CI [0.279\u20130.998],\n p<\/jats:italic>\n < 0.001). In conclusion, an upper-body power exercise, before performance, can induce a PAPE response and enhance 50-m freestyle performance after a 4-minute recovery period.\n <\/jats:p>","DOI":"10.1519\/jsc.0000000000004792","type":"journal-article","created":{"date-parts":[[2024,6,20]],"date-time":"2024-06-20T11:13:48Z","timestamp":1718882028000},"page":"1295-1299","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":2,"title":["The Acute Effects of a Preload Upper-Body Power Exercise on 50-m Freestyle Performance in Youth Swimmers"],"prefix":"10.1519","volume":"38","author":[{"given":"Victoria","family":"Hill","sequence":"first","affiliation":[{"name":"Faculty of Sport, Technology and Health Sciences. St Mary's University, London, United Kingdom; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen","family":"Patterson","sequence":"additional","affiliation":[{"name":"Faculty of Sport, Technology and Health Sciences. St Mary's University, London, United Kingdom; and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Matthew","family":"Buckthorpe","sequence":"additional","affiliation":[{"name":"Faculty of Sport, Technology and Health Sciences. 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