20.500.12556/RUL-184489 The effects of two different recovery protocols on the 100-metre front-crawl performance of male swimmers The aim of this study was to ascertain whether passive recovery with additional sodium hydrogen carbonate (NaHCO$_3$‒) ingestion affected 100-m swimming speed differently from active recovery during a simulation of a typical competition, which consisted of two trials with a 60-min recovery period. Nine male swimmers (mean age 20.9 ±1.6 years, stature 1.81 ± 8.5 m and body mass 78.1 ± 12.9 kg) completed two maximal 100-m front-crawl swims separated by a 60-min active recovery and two maximal 100-m front-crawl swims separated by a 60-min passive recovery with NaHCO$_3$ ingestion on a different test day. The active recovery protocol resulted in lower [LA] than the recovery with NaHCO$_3$ ingestion (p<.05), while pH, pCO$_2$ and [HCO$_3$‒] were higher in the recovery with NaHCO$_3$ ingestion protocol (p<.01). Neither protocol had a significant effect on 100-m swim time. In conclusion, a 60-min active swimming recovery at 65% of maximal velocity on the 100-m crawl or a passive recovery with NaHCO$_3$ intake in the same time interval had no significant effect on the second swimming performance, despite the different effects on pH, [HCO$_3$‒], pCO$_2$, and [LA]. In both experimental conditions, no differences in swimming time were found between the first and the second swim. sport blood pH [HCO$_3$‒] ] lactate NaHCO$_3$ ingestion šport kri pH [HCO$_3$‒] laktat NaHCO$_3$ zaužitje true false true Angleški jezik Slovenski jezik Članek v reviji 2026-07-08 11:48:33 2026-07-08 11:48:34 2026-07-09 04:14:25 0000-00-00 00:00:00 2025 0 0 Str. 281-288 no. 2 Vol. 57 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 796.01-053.6 1848-638X 10.26582/k.57.2.12 268469251 37974_Strumbelj.pdf 37974_Strumbelj.pdf 1 CADCF3902AE58DCAEE9B3B4CF2CBAF43 fd6777cacec66136e5fce7c207a1607fe0f5039945e75b306084e0b982428fb3 913222c0-7ab2-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237337 https://hrcak.srce.hr/clanak/494492 1 11489b0d-7ab2-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=237335 Fakulteta za šport 0 0 0