Self-preferred initial position could be a viable alternative to the standard squat jump testing procedure
Нема приказа
Аутори
Petronijević, Milan S.Garcia-Ramos, Amador
Mirkov, Dragan M.
Jarić, Slobodan
Valdevit, Zoran
Knežević, Olivera
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The purpose of this study was to compare both the magnitude and reliability of different variables (knee angle, squat depth, jump height [Hmax], maximum force [Fmax], and maximum power [Pmax]) between the standardized squat jump (SJ) and the SJ performed from the self-preferred position. Eleven team handball players (age: 19.5 +/- 1.1 years; height: 1.88 +/- 0.06 m; and body mass: 82.1 +/- 8.7 kg) and 13 physically active students (age: 20.5 +/- 0.9 years; height: 1.81 +/- 0.06 m; and body mass: 76.6 +/- 6.6 kg) were evaluated on 2 sessions during the standardized SJ (knee angle fixed at 90 degrees) and the self-preferred SJ (self-selected knee angle to maximize Hmax). Two blocks of both 3 standardized SJ and 3 self-preferred SJ were performed on the first session, whereas only 1 block was performed in the second session. The squat depth was smaller for the self-preferred SJ, whereas the knee angle, Fmax, and Pmax were higher for the self-preferred SJ (p lt 0.025). The magnitude of H...max did not significantly differ between both jump types. Most importantly, the reliability of the mechanical outputs (Hmax, Fmax, and Pmax) was generally higher for the self-preferred SJ (9 of 12 comparisons), whereas only in 2 of 12 comparisons the reliability was meaningfully higher for the standardized SJ. No differences were observed between presumably more (handball players) and less skilled individuals (physically active subjects). These results suggest that the self-preferred SJ should be recommended over the standardized SJ (90 degrees knee angle) because it is not only quicker and more ecologically valid, but could also provide the performance variables with higher reliability.
Кључне речи:
knee angle / squat depth / jump height / maximum force / maximum powerИзвор:
Journal of Strength & Conditioning Research, 2018, 32, 11, 3267-3275Издавач:
- Lippincott Williams & Wilkins, Philadelphia
Финансирање / пројекти:
- University of Granada under a postdoctoral grant (perfeccionamiento de doctores)
- Мишићни и неурални фактори хумане локомоције и њихове адаптивне промене (RS-175037)
- Неинвазивна модулација кортикалне ексцитабилности и пластицитета - Развој метода неинвазивне неуромодулације централног нервног система у испитивања физиолошких механизама, дијагностици и терапији (RS-175012)
DOI: 10.1519/JSC.0000000000002385
ISSN: 1064-8011
PubMed: 30540284
WoS: 000454033000035
Scopus: 2-s2.0-85058590061
Институција/група
Institut za medicinska istraživanjaTY - JOUR AU - Petronijević, Milan S. AU - Garcia-Ramos, Amador AU - Mirkov, Dragan M. AU - Jarić, Slobodan AU - Valdevit, Zoran AU - Knežević, Olivera PY - 2018 UR - http://rimi.imi.bg.ac.rs/handle/123456789/850 AB - The purpose of this study was to compare both the magnitude and reliability of different variables (knee angle, squat depth, jump height [Hmax], maximum force [Fmax], and maximum power [Pmax]) between the standardized squat jump (SJ) and the SJ performed from the self-preferred position. Eleven team handball players (age: 19.5 +/- 1.1 years; height: 1.88 +/- 0.06 m; and body mass: 82.1 +/- 8.7 kg) and 13 physically active students (age: 20.5 +/- 0.9 years; height: 1.81 +/- 0.06 m; and body mass: 76.6 +/- 6.6 kg) were evaluated on 2 sessions during the standardized SJ (knee angle fixed at 90 degrees) and the self-preferred SJ (self-selected knee angle to maximize Hmax). Two blocks of both 3 standardized SJ and 3 self-preferred SJ were performed on the first session, whereas only 1 block was performed in the second session. The squat depth was smaller for the self-preferred SJ, whereas the knee angle, Fmax, and Pmax were higher for the self-preferred SJ (p lt 0.025). The magnitude of Hmax did not significantly differ between both jump types. Most importantly, the reliability of the mechanical outputs (Hmax, Fmax, and Pmax) was generally higher for the self-preferred SJ (9 of 12 comparisons), whereas only in 2 of 12 comparisons the reliability was meaningfully higher for the standardized SJ. No differences were observed between presumably more (handball players) and less skilled individuals (physically active subjects). These results suggest that the self-preferred SJ should be recommended over the standardized SJ (90 degrees knee angle) because it is not only quicker and more ecologically valid, but could also provide the performance variables with higher reliability. PB - Lippincott Williams & Wilkins, Philadelphia T2 - Journal of Strength & Conditioning Research T1 - Self-preferred initial position could be a viable alternative to the standard squat jump testing procedure EP - 3275 IS - 11 SP - 3267 VL - 32 DO - 10.1519/JSC.0000000000002385 ER -
@article{ author = "Petronijević, Milan S. and Garcia-Ramos, Amador and Mirkov, Dragan M. and Jarić, Slobodan and Valdevit, Zoran and Knežević, Olivera", year = "2018", abstract = "The purpose of this study was to compare both the magnitude and reliability of different variables (knee angle, squat depth, jump height [Hmax], maximum force [Fmax], and maximum power [Pmax]) between the standardized squat jump (SJ) and the SJ performed from the self-preferred position. Eleven team handball players (age: 19.5 +/- 1.1 years; height: 1.88 +/- 0.06 m; and body mass: 82.1 +/- 8.7 kg) and 13 physically active students (age: 20.5 +/- 0.9 years; height: 1.81 +/- 0.06 m; and body mass: 76.6 +/- 6.6 kg) were evaluated on 2 sessions during the standardized SJ (knee angle fixed at 90 degrees) and the self-preferred SJ (self-selected knee angle to maximize Hmax). Two blocks of both 3 standardized SJ and 3 self-preferred SJ were performed on the first session, whereas only 1 block was performed in the second session. The squat depth was smaller for the self-preferred SJ, whereas the knee angle, Fmax, and Pmax were higher for the self-preferred SJ (p lt 0.025). The magnitude of Hmax did not significantly differ between both jump types. Most importantly, the reliability of the mechanical outputs (Hmax, Fmax, and Pmax) was generally higher for the self-preferred SJ (9 of 12 comparisons), whereas only in 2 of 12 comparisons the reliability was meaningfully higher for the standardized SJ. No differences were observed between presumably more (handball players) and less skilled individuals (physically active subjects). These results suggest that the self-preferred SJ should be recommended over the standardized SJ (90 degrees knee angle) because it is not only quicker and more ecologically valid, but could also provide the performance variables with higher reliability.", publisher = "Lippincott Williams & Wilkins, Philadelphia", journal = "Journal of Strength & Conditioning Research", title = "Self-preferred initial position could be a viable alternative to the standard squat jump testing procedure", pages = "3275-3267", number = "11", volume = "32", doi = "10.1519/JSC.0000000000002385" }
Petronijević, M. S., Garcia-Ramos, A., Mirkov, D. M., Jarić, S., Valdevit, Z.,& Knežević, O.. (2018). Self-preferred initial position could be a viable alternative to the standard squat jump testing procedure. in Journal of Strength & Conditioning Research Lippincott Williams & Wilkins, Philadelphia., 32(11), 3267-3275. https://doi.org/10.1519/JSC.0000000000002385
Petronijević MS, Garcia-Ramos A, Mirkov DM, Jarić S, Valdevit Z, Knežević O. Self-preferred initial position could be a viable alternative to the standard squat jump testing procedure. in Journal of Strength & Conditioning Research. 2018;32(11):3267-3275. doi:10.1519/JSC.0000000000002385 .
Petronijević, Milan S., Garcia-Ramos, Amador, Mirkov, Dragan M., Jarić, Slobodan, Valdevit, Zoran, Knežević, Olivera, "Self-preferred initial position could be a viable alternative to the standard squat jump testing procedure" in Journal of Strength & Conditioning Research, 32, no. 11 (2018):3267-3275, https://doi.org/10.1519/JSC.0000000000002385 . .