The present study aimed to clarify kinematics among sprinters with similar step length but diŠer-ent step frequencies, and with similar step frequencies but diŠerent step lengths in sprinting. We collected kinematic data from 54 sprinters at approximately the 60 m point of a 100-m sprint using a high-speed camera. The sprinters within 0.5SD from the mean value of each of step frequency and length at top speed phase were included in thèSL-similar' (n=22, step frequency: 3.99-5.19 Hz, step length: 2.07-2.15 m) and thèSF-similar' (n=22, step frequency: 4.51-4.72 Hz, step length: 1.93-2.33 m) groups, respectively. In the SL-similar group, higher step frequency was correlated with shorter stance time (r=-0.899), and a more vertical thigh angle at take-oŠ (r=0.623). In the SF-similar group, longer step length was correlated with greater distance of the hip during ‰ight phase (r=0.847), and a larger vertical acceleration of the forward swinging leg relative to the hip (r=0.438). In conclusion, leg kinematics at touchdown and take-oŠ are important for high step frequency in similar step length, and forward swinging leg kinematics are important for long step length in similar step frequency.
CITATION STYLE
Toyoshima, R., & Sakurai, S. (2016). Kinematic Characteristics of High Step Frequency Sprinters and Long Step Length Sprinters at Top Speed Phase. International Journal of Sport and Health Science, 14(0), 41–50. https://doi.org/10.5432/ijshs.201515
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