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Interrelationships and Shared Variance Among Three Field-Based Performance Tests in Competitive Youth Soccer Players.

Andrew D Fields1, Matthew A Mohammadnabi1, Oleg A Sinelnikov1

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Change of direction and explosive power are linked in young soccer players, but aerobic capacity is separate. Field tests like the T-test and countermovement jump show overlap, while the 20m shuttle run is distinct.

Keywords:
aerobic capacityathletic performancechange of directioncounter-movement jumpexplosive powerfield-based testingyouth soccer

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Youth Athlete Performance

Background:

  • Field-based testing is crucial for assessing soccer performance qualities.
  • Limited research explores shared variance between aerobic capacity, change of direction (COD), and explosive power in youth athletes.
  • Understanding these relationships informs effective training and testing protocols.

Purpose of the Study:

  • To investigate the relationships between the 20m shuttle run (20MSR), T-test (TT), and vertical countermovement jump (CMJ) in youth soccer players.
  • To determine the unique and overlapping contributions of these measures to performance.
  • To identify distinct physiological domains within soccer-specific physical qualities.

Main Methods:

  • Twenty-five competitive male youth soccer players (age 13.7 ± 0.8 years) participated.
  • Standardized assessments included the T-test (TT), vertical countermovement jump (CMJ), and 20m shuttle run (20MSR).
  • Pearson correlations and hierarchical multiple regression analyses were employed.

Main Results:

  • Significant correlations were found between TT and CMJ (r=-0.65), TT and 20MSR (r=-0.59), and CMJ and 20MSR (r=0.53).
  • CMJ explained 42.3% of TT variance; 20MSR did not significantly add to this model.
  • Aerobic capacity (20MSR) did not uniquely predict variance beyond neuromuscular measures (CMJ, TT).

Conclusions:

  • Change of direction and lower-body explosive power share a common physiological basis in young soccer players.
  • Aerobic capacity appears to be a distinct performance domain.
  • TT and CMJ show substantial shared variance, while 20MSR is more independent, supporting multi-modal testing batteries.