Reliability, Responsiveness, and Construct Validity of the V-cut Test in Football Players

Area of Science:

• Sports Science
• Biomechanics
• Football Performance Analysis

Background:

• Change of direction (COD) ability is crucial for football performance.
• Standardized tests are needed to reliably assess COD in football players.
• Understanding age-related and competitive level differences in COD is important for talent identification and training.

Purpose of the Study:

• To evaluate the reliability and responsiveness of the 25-m V-cut test in football players.
• To examine age-related differences in V-cut test performance.
• To investigate differences in V-cut test performance based on competitive level.

Main Methods:

• 289 male football players performed the V-cut test.
• Test-retest reliability was assessed in 34 players over 5-7 days.
• Responsiveness was analyzed in 86 young players over 12 weeks.
• Age-related (U-15 to U-20) and competitive level differences were examined.

Main Results:

• The V-cut test demonstrated high reliability (ICC=0.94, CV=0.8%).
• Responsiveness varied with maturity status (pre- and post-PHV showed significant improvement).
• Significant age-related (ES: 0.93-5.68) and competitive level (ES: 0.57-1.96) differences were observed, with better performance at higher ages and levels.

Conclusions:

• The V-cut test is a reliable measure of COD ability in football.
• The test can be used to monitor COD ability, considering player maturity.
• The V-cut test effectively differentiates between players of varying ages and competitive levels.