Abstract
Purpose
Race walking is a very technical discipline of athletics, which is regulated by two peculiar constraints: straighten knee from heel strike to midstance and flight phase absence while race-walking. For this reason, several studies addressed technical factors as determinant of athletes’ performance. The aim of this study was to analyse differences in technique across athletes’ levels (regional—national—international), and describe race walking kinematics at increasing speeds.
Methods
Fifteen athletes race-walked for 1 min on a treadmill at increasing speeds (from 2.78 m s−1 to exhaustion). Three-dimensional kinematics data were recorded through a motion capture system sampling at 300 Hz.
Results
Step length, step frequency and flight time increased linearly with speed, but step length was the major determinant to raise speed. At increasing speeds, joints angles curves reported a backward time shift (e.g., anticipation of the movement), without altering joints range of motion, a further evidence of the rules influence on athletes’ technique. Among athletes’ levels the only difference found regarded the maximal race walking speed: international 4.97 ± 0.25 m s−1, national 4.61 ± 0.14 m s−1 and regional 4.22 ± 0.14 m s−1.
Conclusion
Athletes’ angular kinematics did not change increasing race-walking speed and did not show differences among athletes’ performance level. Further studies with combined metabolic and electromyography analyses are needed to better elucidate performance determinants and discriminate athletes’ level.
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Acknowledgments
We want to thank all the athletes for their enthusiastic participation in this study; coaches and athletic teams for the great willingness and support.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Pavei, G., La Torre, A. The effects of speed and performance level on race walking kinematics. Sport Sci Health 12, 35–47 (2016). https://doi.org/10.1007/s11332-015-0251-z
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DOI: https://doi.org/10.1007/s11332-015-0251-z