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Lookup NU author(s): Dr Iain SpearsORCiD
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© 2016 Human Kinetics, Inc.Purpose: To compare the effects of 2 repeated-sprint training programs on fitness in soccer. Methods: Fifteen semiprofessional soccer players (age: 24 ± 4 y; body mass: 77 ± 8 kg) completed 6 repeated-sprint training sessions over a 2-week period. Players were assigned to a straight-line (STR) (n = 8; 3-4 sets of 7 × 30 m) or change of direction (CoD) (n = 7; 3-4 sets of 7 × 20-m) repeated-sprint training group. Performance measures included 5-, 10-, and 20-m sprints, countermovement jump, Illinois agility, and Yo-Yo Intermittent Recovery Test level 1 (YYIRTL1) performance. Internal (heart rate) and external (global positioning system-derived measures) training loads were monitored throughout. Data were analyzed using magnitude-based inferences. Results: Internal and external loads were higher in the STR group than in the CoD group with large differences in maximum velocity (28.7%; ±90% confidence limits, 3.3%), moderate differences in mean heart rates (7.0%; ±1.4%) and PlayerLoad (17.6%; ±8.6%), and small differences in peak heart rates (3.0%; ±1.6%). Large improvements in 5-m (STR: 9.6%; ±7.0% and CoD: 9.4%; ±3.3%), 10-m (STR: 6.6%; ±4.6% and CoD: 6.7%; ±2.2%), and 20-m (STR: 3.6; ±4.0% and CoD: 4.0; ±1.7%) sprints were observed. Large and moderate improvements in YYIRTL1 performance were observed in the STR (24.0%; ±9.3%) and CoD (31.0%; ±7.5%), respectively. Between-groups differences in outcome measures were unclear. Conclusions: Two weeks of repeated-sprint training stimulates improvements in acceleration, speed, and high-intensity running performance in soccer players. Despite STR inducing higher internal and external training loads, training adaptations were unclear between training modes, indicating a need for further research.
Author(s): Taylor JM, Macpherson TW, McLaren SJ, Spears I, Weston M
Publication type: Article
Publication status: Published
Journal: International Journal of Sports Physiology and Performance
Year: 2016
Volume: 11
Issue: 8
Pages: 998-1004
Print publication date: 01/11/2016
Acceptance date: 02/04/2016
ISSN (print): 1555-0265
ISSN (electronic): 1555-0273
Publisher: Human Kinetics Publishers Inc.
URL: https://doi.org/10.1123/ijspp.2015-0608
DOI: 10.1123/ijspp.2015-0608
PubMed id: 26869020
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