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Assessment of the force-velocity relationship during vertical jumps: influence of the starting position, analysis procedures and number of loads

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2020
Assessment_ofthe.pdf (950.7Kb)
Authors
Janićijević, Danica
Knežević, Olivera
Mirkov, Dragan M.
Perez-Castilla, Alejandro
Petrović, Miloš R.
Samozino, Pierre
Garcia-Ramos, Amador
Article (Accepted Version)
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Abstract
This study aimed to compare the reliability and magnitude of the force-velocity (F-V) relationship parameters between the squat jumps performed from the 90 degrees (SJ90) and self-preferred knee angle (SJ(pref)). A secondary aim was to explore the effect of the analysis procedure (force platform [FP] and Samozino's [SAM] method) and the number of loads tested (three- and two-point methods) on the F-V relationships. Twelve men were tested in two sessions during the SJ90 and SJ(pref). Two identical blocks of jumps were performed in each session against three external loads. The F-V relationship parameters (maximum force, maximum velocity, F-V slope and maximum power) were determined at each block through the FP and SAM procedures using the data collected under three (three-point method) or only the two most distant loads (two-point method). The average coefficient of variation (CV) of the four F-V parameters revealed a higher reliability for the SJ90 compared to the SJ(pref) (5.86% vs. 7....55%; CVratio = 1.29) with more pronounced differences using the FP (CVratio = 1.43) than the SAM procedure (CVratio = 1.14), and higher reliability for the SAM compared to the FP (6.14% vs. 7.27%; CVratio = 1.18). The SJ(pref) and SAM procedures provided comparable or higher magnitude of the F-V relationship parameters than the SJ90 and FP, respectively. The three- and two-point methods revealed a comparable reliability and trivial differences in the magnitude of the F-V relationship parameters. The routine testing procedure of the F-V relationship could be simplified using the SJ(pref), the SAM procedure and the two-point method.

Keywords:
Force platform / Samozino's method / multiple-point method / two-point method
Source:
European Journal of Sport Science, 2020, 20, 5, 614-623
Publisher:
  • Taylor & Francis Ltd, Abingdon
Funding / projects:
  • University of Granada under a post-doctoral grant (perfeccionamiento de doctores)
  • FPU15/03649
  • Muscular and Neural Factors of Human Locomotion and their Adaptation (RS-175037)
  • Noninvasive modulation of cortical excitability and plasticity - Noninvasive neuromodulation of the CNS in the study of physiological mechanisms, diagnosis and treatment (RS-175012)
Note:
  • This is the peer-reviewed version of the article: Janićijević, D.; Knežević, O.; Mirkov, D. M.; Perez-Castilla, A.; Petrović, M. R.; Samozino, P.; Garcia-Ramos, A. Assessment of the Force-Velocity Relationship during Vertical Jumps: Influence of the Starting Position, Analysis Procedures and Number of Loads. European Journal of Sport Science 2020, 20 (5), 614–623. https://doi.org/10.1080/17461391.2019.1645886
Related info:
  • Version of
    http://rimi.imi.bg.ac.rs/handle/123456789/1020
  • Version of
    https://doi.org/10.1080/17461391.2019.1645886

DOI: 10.1080/17461391.2019.1645886

ISSN: 1746-1391

PubMed: 31314671

WoS: 000480202200001

Scopus: 2-s2.0-85070293986
[ Google Scholar ]
22
14
URI
http://rimi.imi.bg.ac.rs/handle/123456789/1128
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
Institut za medicinska istraživanja
TY  - JOUR
AU  - Janićijević, Danica
AU  - Knežević, Olivera
AU  - Mirkov, Dragan M.
AU  - Perez-Castilla, Alejandro
AU  - Petrović, Miloš R.
AU  - Samozino, Pierre
AU  - Garcia-Ramos, Amador
PY  - 2020
UR  - http://rimi.imi.bg.ac.rs/handle/123456789/1128
AB  - This study aimed to compare the reliability and magnitude of the force-velocity (F-V) relationship parameters between the squat jumps performed from the 90 degrees (SJ90) and self-preferred knee angle (SJ(pref)). A secondary aim was to explore the effect of the analysis procedure (force platform [FP] and Samozino's [SAM] method) and the number of loads tested (three- and two-point methods) on the F-V relationships. Twelve men were tested in two sessions during the SJ90 and SJ(pref). Two identical blocks of jumps were performed in each session against three external loads. The F-V relationship parameters (maximum force, maximum velocity, F-V slope and maximum power) were determined at each block through the FP and SAM procedures using the data collected under three (three-point method) or only the two most distant loads (two-point method). The average coefficient of variation (CV) of the four F-V parameters revealed a higher reliability for the SJ90 compared to the SJ(pref) (5.86% vs. 7.55%; CVratio = 1.29) with more pronounced differences using the FP (CVratio = 1.43) than the SAM procedure (CVratio = 1.14), and higher reliability for the SAM compared to the FP (6.14% vs. 7.27%; CVratio = 1.18). The SJ(pref) and SAM procedures provided comparable or higher magnitude of the F-V relationship parameters than the SJ90 and FP, respectively. The three- and two-point methods revealed a comparable reliability and trivial differences in the magnitude of the F-V relationship parameters. The routine testing procedure of the F-V relationship could be simplified using the SJ(pref), the SAM procedure and the two-point method.
PB  - Taylor & Francis Ltd, Abingdon
T2  - European Journal of Sport Science
T1  - Assessment of the force-velocity relationship during vertical jumps: influence of the starting position, analysis procedures and number of loads
EP  - 623
IS  - 5
SP  - 614
VL  - 20
DO  - 10.1080/17461391.2019.1645886
ER  - 
@article{
author = "Janićijević, Danica and Knežević, Olivera and Mirkov, Dragan M. and Perez-Castilla, Alejandro and Petrović, Miloš R. and Samozino, Pierre and Garcia-Ramos, Amador",
year = "2020",
abstract = "This study aimed to compare the reliability and magnitude of the force-velocity (F-V) relationship parameters between the squat jumps performed from the 90 degrees (SJ90) and self-preferred knee angle (SJ(pref)). A secondary aim was to explore the effect of the analysis procedure (force platform [FP] and Samozino's [SAM] method) and the number of loads tested (three- and two-point methods) on the F-V relationships. Twelve men were tested in two sessions during the SJ90 and SJ(pref). Two identical blocks of jumps were performed in each session against three external loads. The F-V relationship parameters (maximum force, maximum velocity, F-V slope and maximum power) were determined at each block through the FP and SAM procedures using the data collected under three (three-point method) or only the two most distant loads (two-point method). The average coefficient of variation (CV) of the four F-V parameters revealed a higher reliability for the SJ90 compared to the SJ(pref) (5.86% vs. 7.55%; CVratio = 1.29) with more pronounced differences using the FP (CVratio = 1.43) than the SAM procedure (CVratio = 1.14), and higher reliability for the SAM compared to the FP (6.14% vs. 7.27%; CVratio = 1.18). The SJ(pref) and SAM procedures provided comparable or higher magnitude of the F-V relationship parameters than the SJ90 and FP, respectively. The three- and two-point methods revealed a comparable reliability and trivial differences in the magnitude of the F-V relationship parameters. The routine testing procedure of the F-V relationship could be simplified using the SJ(pref), the SAM procedure and the two-point method.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "European Journal of Sport Science",
title = "Assessment of the force-velocity relationship during vertical jumps: influence of the starting position, analysis procedures and number of loads",
pages = "623-614",
number = "5",
volume = "20",
doi = "10.1080/17461391.2019.1645886"
}
Janićijević, D., Knežević, O., Mirkov, D. M., Perez-Castilla, A., Petrović, M. R., Samozino, P.,& Garcia-Ramos, A.. (2020). Assessment of the force-velocity relationship during vertical jumps: influence of the starting position, analysis procedures and number of loads. in European Journal of Sport Science
Taylor & Francis Ltd, Abingdon., 20(5), 614-623.
https://doi.org/10.1080/17461391.2019.1645886
Janićijević D, Knežević O, Mirkov DM, Perez-Castilla A, Petrović MR, Samozino P, Garcia-Ramos A. Assessment of the force-velocity relationship during vertical jumps: influence of the starting position, analysis procedures and number of loads. in European Journal of Sport Science. 2020;20(5):614-623.
doi:10.1080/17461391.2019.1645886 .
Janićijević, Danica, Knežević, Olivera, Mirkov, Dragan M., Perez-Castilla, Alejandro, Petrović, Miloš R., Samozino, Pierre, Garcia-Ramos, Amador, "Assessment of the force-velocity relationship during vertical jumps: influence of the starting position, analysis procedures and number of loads" in European Journal of Sport Science, 20, no. 5 (2020):614-623,
https://doi.org/10.1080/17461391.2019.1645886 . .

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