Zapisane w:
| 1. autor: | |
|---|---|
| Format: | Recurso digital |
| Język: | angielski |
| Wydane: |
Zenodo
2025
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| Hasła przedmiotowe: | |
| Dostęp online: | https://doi.org/10.5281/zenodo.17187152 |
| Etykiety: |
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Spis treści:
- <p>The purpose of this study was to examine the acute effects of perceived maximal isometric midthigh pulls (IMTP) performed for at 3, 5, or 9 seconds on subsequent squat jump (SJ) height performance. Twenty-nine resistance-trained men and women (10 women; mean age 22.8 ± <em>SD</em> 2.9, years, height = 163.9 ± 7.5 cm, body mass = 68.3 kg, 19 men; mean age 23.4 ± <em>SD</em> 3.5 years, height = 175.6 ± 6.9 cm, body mass = 90.0 kg) completed 4 visits (3 experimental and 1 control) in a randomized order, at least 24 hours apart. Participants performed 3 SJ attempts before a single maximal IMTP contraction with 3 minutes of rest in between attempts and 15s, 3 minutes, and 6 minutes after. SJ attempts were performed at a knee angle of 90° and IMTP contractions from a knee angle set at 125-135° and hip angle at 140-150°. Subjects were divided into 2 groups (“high jumpers” and “jumpers”) to determine possible PAPE effects of IMTP contractions on subsequent SJ performance. No significant four-way interaction for condition × time × jumping level × sex (<em>p </em>= 0.468), was found for JH. No significant main effects were found for time (<em>p </em>= 0.945) or condition (<em>p </em>= 0.324). For flight time (FT), there was no significant four-way interaction for condition × time × jumping level × sex (<em>p</em> = 0.363). No significant main effects for time (<em>p</em> = 0.277) or condition were found (<em>p</em> = 0.544). For JH and FT, there were main effects for jumping level (<em>p </em>< 0.001) and sex (<em>p </em>< 0.001). Across all conditions, high jumpers and men demonstrated greater flight times compared to low jumpers and women. In conclusion, a single perceived maximal IMTP contraction activity performed for 3s, 5s, or 9s did not result in statistically significant changes in SJ performance in JH or FT.</p>