Eccentric hamstring strength in elite track and field athletes on the British Athletics world class performance program

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ObjectivesThis novel study aims to provide unique data on eccentric hamstring strength in elite track and field athletes. DesignClinical measurement, cross-sectional study. SettingAcross two British Athletics performance centres. Participants44 elite British track and field athletes. Main outcome measuresEccentric hamstring force and torque were evaluated using the Nordbord device. Injury history and demographic data was collected to assess whether differences between gender, event group, limb symmetry and previous injury history were present. ResultsAverage peak force for males and females was 418.38N and 318.54N. Relative to body weight there were no gender differences (Male 5.21N.kg−1, Female 4.99N.kg−1) (p = 0.62). The right limb was significantly stronger in long sprint (400m athletes) (p = 0.00018) (d = 0.56). No differences in relative force or torque were observed between previously injured and non-injured limbs. ConclusionsThis study provides unique data in elite track and field athletes. Relative force per kilogram should be used when comparing male and female athletes. Unlike other studies, we found no difference in eccentric strength between previously injured and non-injured limbs. The novel finding of increased eccentric strength demonstrated in the right limb in 400m sprinters may be due to the asymmetric demands of bend running and may be considered normal.