Next Article in Journal
Rethinking Tourist Wellbeing through the Concept of Slow Adventure
Previous Article in Journal
Effects of Pre-Exercise High and Low Glycaemic Meal on Intermittent Sprint and Endurance Exercise Performance
Open AccessArticle

Effects of Linear Versus Changes of Direction Repeated Sprints on Intermittent High Intensity Running Performance in High-level Junior Football Players over an Entire Season: A Randomized Trial

1
School of Sport Sciences, Faculty of Health Sciences, UiT the Arctic University of Norway, 9037 Tromsø, Norway
2
Faculty of Education and Arts, Nord University, 7600 Levanger, Norway
3
Department of Sport Sciences and Clinical Biomechanics, Faculty of Health Sciences, University of Southern Denmark, 5230 Odense, Denmark
*
Author to whom correspondence should be addressed.
Sports 2019, 7(8), 189; https://doi.org/10.3390/sports7080189
Received: 4 July 2019 / Revised: 1 August 2019 / Accepted: 1 August 2019 / Published: 6 August 2019
Background: Changes of direction (COD) repeated sprints (RSs) might have greater relevance to football than linear RSs. We aimed to compare the effects of linear and COD RSs on intermittent high intensity running (HIR) over an entire season. Methods: In total, 19 high-level male football players (16–19 years) randomly performed linear RSs or COD RSs twice a week during their competitive season over 22 weeks. Yo-Yo intermittent recovery test level 2 (Yo-Yo IR2), and 10- and 20-m sprint was assessed pre-, mid- (11 weeks), and post-intervention (22 weeks). Maximal oxygen uptake (VO2max) was assessed pre- and post-intervention. Results: There was no interaction effect (time x group) in Yo-Yo IR2 (p = 0.36, pη2 = 0.06) or sprint tests (10 m: p = 0.55, pη2 = 0.04, 20 m: p = 0.28 pη2 = 0.08), and no change differences between groups. There was a main effect of time for Yo-Yo IR2 (p = 0.002, pη2 = 0.31) but not in sprints or VO2max. Conclusion: Linear and COD RS exercise twice a week over 22 weeks equally improves intermittent HIR performance but does not improve sprint time or aerobic power in high-level junior football players. However, due to our two-armed intervention, we cannot exclude possible effects from other exercise components in the players’ exercise program. View Full-Text
Keywords: soccer; repeated sprint; high intensity running soccer; repeated sprint; high intensity running
Show Figures

Figure 1

MDPI and ACS Style

Sagelv, E.H.; Selnæs, I.; Pedersen, S.; Pettersen, S.A.; Randers, M.B.; Welde, B. Effects of Linear Versus Changes of Direction Repeated Sprints on Intermittent High Intensity Running Performance in High-level Junior Football Players over an Entire Season: A Randomized Trial. Sports 2019, 7, 189.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop