Hydraulic Resistance Device for Force, Power, and Force–Velocity–Power Profile Assessment During Resisted Sprints with Different Overloads
This study aimed to evaluate the ability of a hydraulic resistance device (HRD) to assess the force and power output and force–velocity–power profile of short sprints, while examining the effects of hydraulic overload on these outcomes. Twenty-eight amateur athletes performed 20 m sprints under mini...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/3/1064 |
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| Summary: | This study aimed to evaluate the ability of a hydraulic resistance device (HRD) to assess the force and power output and force–velocity–power profile of short sprints, while examining the effects of hydraulic overload on these outcomes. Twenty-eight amateur athletes performed 20 m sprints under minimal (MiL), moderate (MoL), and high (HiL) overloads. Sprint velocity was measured with the HRD, while resistance force (F<sub>r</sub>) was assessed from the pressure via the HRD and from the reaction force via the force plate (FP). Using velocity and F<sub>r</sub> during the sprints, maximal velocity (v<sub>max</sub>), average horizontal force (F<sub>avg</sub>), average power (P<sub>avg</sub>), and FvP profile variables (F<sub>0</sub>, v<sub>0</sub>, and P<sub>max</sub>) were calculated. A two-way ANOVA analysed the effects of overload and calculation method. In addition, a correlation between the HRD and FP measurements was evaluated. For all variables, very high to excellent correlation between the HRD and FP was observed (r ≥ 0.96). However, the F<sub>avg</sub>, P<sub>avg</sub>, F<sub>0</sub>, and P<sub>max</sub> calculated by the HRD were lower than the FP across all overloads (<i>η</i><sup>2</sup> ≥ 0.51; <i>p</i> < 0.001). Regardless of the method used, F<sub>avg</sub>, P<sub>avg</sub>, and F<sub>0</sub> were highest at HiL (<i>η</i><sup>2</sup> ≥ 0.38; <i>p</i> < 0.001), and v<sub>0</sub> was highest at MiL (<i>η</i><sup>2</sup> = 0.35; <i>p</i> < 0.001), whereas overload had no significant effect on P<sub>max</sub> (<i>η</i><sup>2</sup> = 0.01; <i>p</i> = 0.770). The HRD is a feasible means for monitoring force and power output during hydraulic resisted sprints but should not be directly compared to other resistance devices. HiL produced the highest F<sub>avg</sub>, P<sub>avg</sub>, and F<sub>0</sub> and may be optimal for increasing power output and improving acceleration performance. |
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| ISSN: | 2076-3417 |