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Updated: Jan 22, 2026
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Published on: June 10, 2025
Isokinetic strength differences between elite senior and youth female soccer players identifies training requirements
Steven James Eustace1, Richard Michael Page2, Matt Greig2
1School of Life Sciences Science & Health Building, Coventry University, 20 Whitefriars Street, Coventry, CV1 2DS, United Kingdom; Sports Injuries Research Group, Department of Sport and Physical Activity, Edge Hill University, St Helens Road, Ormskirk, L39 4QP, United Kingdom.
Objectives:
To compare traditional and angle-specific isokinetic strength of eccentric knee flexors and concentric knee extensors in female senior professional and youth soccer players.
Design:
Cross-sectional study design.
Setting:
University's Laboratory.
Participants:
A total of 34 players (17 seniors [age 25.31 ± 4.51 years; height 167.89 ± 7.04 cm; mass 63.12 ± 7.79 kg] and 17 youths [16.91 ± 1.16 years; height 165.92 ± 4.42 cm; mass 60.07 ± 4.48 kg]) from the Women's Super League 1 completed strength assessments at 180, 270 and 60°∙s-1.
Main Outcome Measures:
Peak torque (PT), dynamic control ratio (DCR), angle of peak torque (APT), functional range (FR), angle-specific torque (AST) and angle-specific DCR (DCRAST) were compared between age groups.
Results:
The PT (P = 0.016) AST (P = 0.041) were significantly higher in seniors compared to youths; however APT (P = 0.141), DCR (P = 0.524) FR (P = 0.821) and DCRAST (P = 0.053) were not significant between playing age.
Conclusion:
The use of absolute and angle-specific strength measures were able to distinguish between female playing ages, whereas DCR and DCRAST was unable to identify differences. The PT and AST metrics may be the most useful metrics to help identify and inform training needs, particularly in youths.
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