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Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests


Pojskic, H.; Åslin, E. V.; Krolo, A.; Jukić, I.; Uljevic, O.; Spasić, M.; Sekulic, D.
Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests // Frontiers in Physiology, 9 (2018), 506, 11 doi:10.3389/fphys.2018.00506 (međunarodna recenzija, članak, znanstveni)


Naslov
Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests

Autori
Pojskic, H. ; Åslin, E. V. ; Krolo, A. ; Jukić, I. ; Uljevic, O. ; Spasić, M. ; Sekulic, D.

Izvornik
Frontiers in Physiology (1664-042X) 9 (2018); 506, 11

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
football ; pre-planned agility ; non-planned agility ; conditioning capacities ; team sports

Sažetak
Agility is a significant determinant of success in soccer ; however, studies have rarely presented and evaluated soccer-specific tests of reactive agility (S_RAG) and non-reactive agility (change of direction speed - S_CODS) or their applicability in this sport. The aim of this study was to define the reliability and validity of newly developed tests of the S_RAG and S_CODS to discriminate between the performance levels of junior soccer players. The study consisted of 20 players who were involved at the highest national competitive rank (all males ; age: 17.0 +/- 0.9 years), divided into three playing positions (defenders, midfielders, and forwards) and two performance levels (U17 and U19). Variables included body mass (BM), body height, body fat percentage, 20-m sprint, squat jump, countermovement jump, reactive-strength-index, unilateral jump, 1RM-back-squat, S_CODS, and three protocols of S_RAG. The reliabilities of the S_RAG and S_CODS were appropriate to high (ICC: 0.70 to 0.92), with the strongest reliability evidenced for the S_CODS. The S__CODS and S__RAG shared 25-40% of the common variance. Playing positions significantly differed in BM (large effect-size differences [ES] ; midfielders were lightest) and 1RM-back- squat (large ES ; lowest results in midfielders). The performance levels significantly differed in age and experience in soccer ; U19 achieved better results in the S_CODS (t-test: 3.61, p < 0.05, large ES) and two S_RAG protocols (t-test: 2.14 and 2.41, p < 0.05, moderate ES). Newly developed tests of soccer-specific agility are applicable to differentiate U17 and U19 players. Coaches who work with young soccer athletes should be informed that the development of soccer- specific CODS and RAG in this age is mostly dependent on training of the specific motor proficiency.

Izvorni jezik
Engleski

Znanstvena područja
Kineziologija



POVEZANOST RADA


Ustanove
Kineziološki fakultet, Zagreb,
Kineziološki fakultet, Split

Profili:

Avatar Url Ante Krolo (autor)

Avatar Url Igor Jukić (autor)

Avatar Url Damir Sekulić (autor)

Avatar Url Miodrag Spasić (autor)

Avatar Url Ognjen Uljević (autor)

Citiraj ovu publikaciju

Pojskic, H.; Åslin, E. V.; Krolo, A.; Jukić, I.; Uljevic, O.; Spasić, M.; Sekulic, D.
Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests // Frontiers in Physiology, 9 (2018), 506, 11 doi:10.3389/fphys.2018.00506 (međunarodna recenzija, članak, znanstveni)
Pojskic, H., Åslin, E., Krolo, A., Jukić, I., Uljevic, O., Spasić, M. & Sekulic, D. (2018) Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests. Frontiers in Physiology, 9, 506, 11 doi:10.3389/fphys.2018.00506.
@article{article, year = {2018}, pages = {11}, DOI = {10.3389/fphys.2018.00506}, chapter = {506}, keywords = {football, pre-planned agility, non-planned agility, conditioning capacities, team sports}, journal = {Frontiers in Physiology}, doi = {10.3389/fphys.2018.00506}, volume = {9}, issn = {1664-042X}, title = {Importance of reactive agility and change of direction speed in differentiating performance levels in junior soccer players: reliability and validity of newly developed soccer-specific tests}, keyword = {football, pre-planned agility, non-planned agility, conditioning capacities, team sports}, chapternumber = {506} }

Časopis indeksira:


  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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