Expression of Concern: Svynos et al. Effects of Vertical and Horizontal Jumping Asymmetries on Linear and Change-of-Direction Speed Performance of Female Soccer Players. Appl. Sci. 2024, 14, 3901

Key Points

• To address concerns regarding the impact of jumping asymmetries on speed performance in female soccer players.
• Utilized performance assessments for jumping and speed metrics
• Focused on both linear and change-of-direction speed
• Analyzed gender-specific responses to training interventions
• Results concerning the relationship between jumping asymmetries and speed performance raised questions
• Implications for the validity of the training effects on speed were highlighted