Functional hamstrings: quadriceps ratios in elite women's soccer players

Area of Science:

• Sports Science
• Biomechanics
• Human Movement

Background:

• Distinguishing physiological differences between starters and non-starters in elite women's soccer is crucial for performance analysis.
• Isokinetic strength testing provides objective measures of muscle function relevant to athletic performance.

Purpose of the Study:

• To compare isokinetic strength variables between starting and non-starting elite women's soccer players.
• To identify specific strength measures that differentiate playing status in this athlete cohort.

Main Methods:

• Maximal voluntary muscle actions of leg extensors (concentric) and flexors (eccentric) were assessed using an isokinetic dynamometer.
• Concentric peak torque (leg extensors), eccentric peak torque (leg flexors), and hamstrings:quadriceps (H:Q) ratio were measured at 1.047 rad·s⁻¹ and 4.189 rad·s⁻¹.
• A convenience sample included 10 starters and 7 non-starters.

Main Results:

• Concentric peak torque for leg extensors did not differ between starters and non-starters.
• Concentric peak torque for leg extensors was higher at 1.047 rad·s⁻¹ than 4.189 rad·s⁻¹ in both groups.
• Eccentric peak torque for leg flexors was significantly greater in starters compared to non-starters at 4.189 rad·s⁻¹.

Conclusions:

• Eccentric leg flexor strength at fast velocities is a key differentiator between starters and non-starters in elite women's soccer.
• This specific strength measure may serve as a valuable physiological marker for playing status.
• Further research could explore the implications for training and injury prevention programs.