Cover image of the article: Diurnal Variations in Physical Performances Related to Football in Young Soccer Players

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Diurnal Variations in Physical Performances Related to Football in Young Soccer Players

Authors

Hamdi ChtourouHamdi Chtourou ORCID2,*, Omar Hammouda1, Hichem Souissi1, Karim Chamari3, Anis Chaouachi1, Nizar Souissi3
2Research Unit, High Institute of Sport and Physical Education, Sfax University, Tunisia
1Research Laboratory Sports performance Optimization National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
3High Institute of Sport and Physical Education, Ksar-Sad, Manouba University, Tunisia
*Corresponding Author: National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia. Bp263, Ave Med Ali Akid, 1004 El Menzah, Tunis, Tunisia., h_chtourou@yahoo.fr. Email: h_chtourou@yahoo.fr

Asian Journal of Sports Medicine:Vol. 3, issue 3; 139-144
Published online:Aug 31, 2012
Article type:Research Article
Received:Jan 08, 2012
Accepted:Apr 12, 2012
How to Cite:Chtourou H, Hammouda O, Souissi H, Chamari K, Chaouachi A, et al. Diurnal Variations in Physical Performances Related to Football in Young Soccer Players. Asian J Sports Med. 2012;3(3):34604. doi: https://doi.org/10.5812/asjsm.34604

Abstract

Purpose:

This study investigated the effects of time-of-day on aerobic and anaerobic performances during the Yo-Yo, repeated sprint ability (RSA) and the Wingate tests in young soccer players.

Methods:

In a counterbalanced and a random order, twenty junior male soccer players completed the Yo-Yo, the RSA, and the Wingate tests at two different times-of-day: 07:00 and 17:00 h. During the Yo-Yo test, the total distance (TD) covered and the estimated maximal aerobic velocity (MAV) were determined. The peak power (PP) during each sprint, the percentage of decrement of PP (PD) and total work (Wtotal) during the RSA test were, also, measured. In addition, during the Wingate test, the peak (Ppeak) and mean (Pmean) powers were recorded.

Results:

During the Wingate test, Ppeak and Pmean were significantly higher at 17:00 than 07:00 h (P<0.05) with diurnal gains of 3.13.6 and 2.93.5% respectively. During the RSA test, PP during the first two sprints, Pdec and Wtotal were, also, higher in the evening (P<0.05) with amplitudes of 4.84.6, 3.13.0, 13.132.1, and 4.12.5% respectively. Likewise, TD and MAV during the Yo-Yo test were higher at 17:00 than 07:00 h with diurnal gains of 13.110.7 and 4.23.3 respectively.

Conclusions:

The present study confirms the daily variations of both aerobic and anaerobic performances during the Yo-Yo, the RSA, and the Wingate tests in trained young Tunisian soccer players.

Highlights

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Copyright

© 2012, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.

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