| Autor: |
Rago, Vincenzo, Nakamura, Fábio Yuzo, Suarez-Balsera, Carlos, Arnaiz-Lastras, Javier, Figueiredo, Pedro |
| Předmět: |
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| Zdroj: |
International Journal of Sports Physiology & Performance; Dec2024, Vol. 19 Issue 12, p1400-1408, 9p |
| Abstrakt: |
Purpose: We examined the reliability of force parameters derived from the isometric midthigh pull (IMTP) and their correlation with the functional capacities of young soccer players. Methods: Data were collected from 20 young professional soccer players within and between 2 sessions (after 1 wk) using a 1000-Hz force plate. Results: Performance outputs in all IMTP parameters were consistent and showed moderate to excellent reliability (intraclass correlation coefficient =.72–1.00) within and between sessions. However, all parameters reported a marginal ability to detect chronic changes in performance (smallest worthwhile change [SWC] < standard error of measurement [SEM]) except for peak vertical force (PF) parameters, which showed good usefulness (SWC > SEM). Absolute PF was correlated with the countermovement-jump (CMJ) total impulse (CMJ-TI; r =.54), whereas relative PF (to body mass) was correlated with CMJ height, CMJ peak power, and the last speed of the 30:15 Intermittent Fitness Test (VIFT; r =.40 to.63). IMTP time-dependent forces were correlated with CMJ-TI (r =.52 to.62). The IMTP impulse parameters were positively correlated with CMJ-TI (r =.48 to.58) and negatively with VIFT (r = −.44 to −.38). None of the IMTP parameters were correlated either with the CMJ mean propulsive force or with any linear acceleration times. Conclusions: All IMTP parameters can be adopted by practitioners involved with testing young soccer players based on their acceptable reliability criteria. However, caution should be taken when interpreting the time-dependent variables based on their marginal usefulness when assessing performance. Generally, a greater PF was associated with a greater vertical power based on its correlation to CMJ. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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