In:
Journal of Strength and Conditioning Research, Ovid Technologies (Wolters Kluwer Health), Vol. 31, No. 9 ( 2017-09), p. 2423-2431
Abstract:
Neiva, HP, Marques, MC, Barbosa, TM, Izquierdo, M, Viana, JL, Teixeira, AM, and Marinho, DA. Warm-up for sprint swimming: race-pace or aerobic stimulation? A randomized study. J Strength Cond Res 31(9): 2423–2431, 2017—The aim of this study was to compare the effects of 2 different warm-up intensities on 100-m swimming performance in a randomized controlled trial. Thirteen competitive swimmers performed two 100-m freestyle time-trials on separate days after either control or experimental warm-up in a randomized design. The control warm-up included a typical race-pace set (4 × 25 m), whereas the experimental warm-up included an aerobic set (8 × 50 m at 98–102% of critical velocity). Cortisol, testosterone, blood lactate ([La − ]), oxygen uptake (V̇ o 2 ), heart rate, core (Tcore and Tcore net ) and tympanic temperatures, and rating of perceived exertion (RPE) were monitored. Stroke length (SL), stroke frequency (SF), stroke index (SI), and propelling efficiency (η p ) were assessed for each 50-m lap. We found that V̇ o 2 , heart rate, and Tcore net were higher after experimental warm-up ( d 〉 0.73), but only the positive effect for Tcore net was maintained until the trial. Performance was not different between conditions ( d = 0.07). Experimental warm-up was found to slow SF (mean change ±90% CL = 2.06 ± 1.48%) and increase SL (1.65 ± 1.40%) and η p (1.87 ± 1.33%) in the first lap. After the time-trials, this warm-up had a positive effect on Tcore net ( d = 0.69) and a negative effect on [La − ] ( d = 0.56). Although the warm-ups had similar outcomes in the 100-m freestyle, performance was achieved through different biomechanical strategies. Stroke length and efficiency were higher in the first lap after the experimental warm-up, whereas SF was higher after control warm-up. Physiological adaptations were observed mainly through an increased Tcore after experimental warm-up. In this condition, the lower [La − ] after the trial suggests lower dependency on anaerobic metabolism.
Type of Medium:
Online Resource
ISSN:
1064-8011
DOI:
10.1519/JSC.0000000000001701
Language:
English
Publisher:
Ovid Technologies (Wolters Kluwer Health)
Publication Date:
2017
detail.hit.zdb_id:
2142889-X
SSG:
31
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