Cecilia-Gallego, P., Odriozola, A., Beltran-Garrido, J.V., Padulles-Riu, J.M., Alavarez-Hems, J. (2025)
The current motorized towing system devices are highly precise when selecting loads and achieving results. An increased use could expand the theoretical body on the effects of overspeed methods. Our objectives were to analyze the results of an overspeed intervention with a motorized towing system on the maximum running speed (MRS), the step length and rate, the flight and contact time, and the distance to the first support from the vertical projection of the center of masses, as well as to make a methodological proposal. Six young athletes (age: 16.71 ± 2.00 years) performed ten overspeed sessions with the assistance of 5.05 ± 0.53% of body weight at 105.83 ± 1.79% of maximum running speed, using the 1080 Sprint device. After the intervention, non-significant (p > .05) increases of 2.94% (95% CI: 0.25 – 5.62) of the voluntary maximum running speed were obtained with a large effect size (rB: 0.71; 95% CI: 0.00 – 0.95). The distance to the first support from the vertical projection of the center of masses presented significant differences (p < .05; drB: 1; 95% CI: 1 – 1). The non-significant maximum running speed increases cannot be neglected in high-level competition, where small differences in performance separate athletes. To choose the appropriate training load is key, and so a standardized methodology allowing the comparison of results is necessary.
Published: February 2, 2025