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Effects of Dry-Land Strength and Conditioning Programs in Age Group Swimmers

Amaro, Nuno M.1,2; Marinho, Daniel A.2,3; Marques, Mário C.2,3; Batalha, Nuno P.2,4; Morouço, Pedro G.5

Journal of Strength and Conditioning Research: September 2017 - Volume 31 - Issue 9 - p 2447–2454
doi: 10.1519/JSC.0000000000001709
Original Research

Amaro, NM, Marinho, DA, Marques, MC, Batalha, N, and Morouço, PG. Effects of dry-land strength and conditioning programs in age group swimmers. J Strength Cond Res 31(9): 2447–2454, 2017—Even though dry-land S&C training is a common practice in the context of swimming, there are countless uncertainties over its effects in performance of age group swimmers. The objective was to investigate the effects of dry-land S&C programs in swimming performance of age group swimmers. A total of 21 male competitive swimmers (12.7 ± 0.7 years) were randomly assigned to the Control group (n = 7) and experimental groups GR1 and GR2 (n = 7 for each group). Control group performed a 10-week training period of swim training alone, GR1 followed a 6-week dry-land S&C program based on sets and repetitions plus a 4-week swim training program alone and GR2 followed a 6-week dry-land S&C program focused on explosiveness, plus a 4-week program of swim training alone. Results for the dry-land tests showed a time effect between week 0 and week 6 for vertical jump (p < 0.01) in both experimental groups, and for the GR2 ball throwing (p < 0.01), with moderate to strong effect sizes. The time × group analyses showed that for performance in 50 m, differences were significant, with the GR2 presenting higher improvements than their counterparts (F = 4.156; p = 0.007;

= 0.316) at week 10. Concluding, the results suggest that 6 weeks of a complementary dry-land S&C training may lead to improvements in dry-land strength. Furthermore, a 4-week adaptation period was mandatory to achieve beneficial transfer for aquatic performance. Additional benefits may occur if coaches plan the dry-land S&C training focusing on explosiveness.

1Life Quality Research Center, Polytechnic Institute of Leiria, Leiria, Portugal;

2Research Center in Sports, Health and Human Development, CIDESD, Vila Real, Portugal;

3Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal;

4Departament of Sport and Health, School of Science and Technology, University of Évora, Évora, Portugal; and

5Center for Rapid and Sustainable Product Development, Polytechnic Institute of Leiria, Marinha Grande, Portugal

Address correspondence to Pedro G. Morouço, pedro.morouco@ipleiria.pt.

Copyright © 2017 by the National Strength & Conditioning Association.