Force-velocity-power variables derived from isometric and dynamic testing: metrics reliability and the relationship with jump performance

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F24%3A10487746" target="_blank" >RIV/00216208:11510/24:10487746 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V3v__qNebr" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V3v__qNebr</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.7717/peerj.18371" target="_blank" >10.7717/peerj.18371</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Force-velocity-power variables derived from isometric and dynamic testing: metrics reliability and the relationship with jump performance

Popis výsledku v původním jazyce

We investigated the convergent validity and intrasession reliability of force, velocity, and power (FVP) variables and the dynamic strength index (DSI) obtained from isometric midthigh pull (IMTP) and squat jump (SJ) testing. Fifteen male combat sports athletes (27 +/- 5 years, 77 +/- 9 kg, 1.76 +/- 0.1 m, 14 +/- 6% body fat) participated in a 2-days study. The first day involved testing familiarization, while the second was dedicated to IMTP and SJ testing. Maximal isometric force (F-iso) was obtained from IMTP, while mean force, mean velocity, jump height, and jump impulse (J) were gathered from SJ. To analyze the FVP, we calculated the linear relationship between force and velocity, which allowed us to obtain the slope of the relationship (S-FV), the theoretical velocity at zero force (V-0), and the theoretical maximal power (P-max). DSI was obtained as a ratio from SJ peak force and F-iso. The convergent validity was investigated using Spearman&apos;s rho coefficients to assess the relationships between jump height and J with F-iso, V-0, S-FV, P-max, and DSI. The intrasession reliability was assessed using intraclass correlation coefficients (ICC) and coefficient of variations (CV). All variables demonstrated acceptable reliability scores. ICC ranged from moderate to excellent, and the mean CV was &lt;10%. We found a &quot;very large&quot; correlation between jump J and P-max, while jump height was not correlated with any variable. In conclusion, the IMTP and SJ combination is a practical way to determine FVP producing capacities that can be reliably measured (intrasession). The P-max, derived from FVP, was correlated with jump performance, which might evidence the convergent validity of the method.

Název v anglickém jazyce

Force-velocity-power variables derived from isometric and dynamic testing: metrics reliability and the relationship with jump performance

Popis výsledku anglicky

We investigated the convergent validity and intrasession reliability of force, velocity, and power (FVP) variables and the dynamic strength index (DSI) obtained from isometric midthigh pull (IMTP) and squat jump (SJ) testing. Fifteen male combat sports athletes (27 +/- 5 years, 77 +/- 9 kg, 1.76 +/- 0.1 m, 14 +/- 6% body fat) participated in a 2-days study. The first day involved testing familiarization, while the second was dedicated to IMTP and SJ testing. Maximal isometric force (F-iso) was obtained from IMTP, while mean force, mean velocity, jump height, and jump impulse (J) were gathered from SJ. To analyze the FVP, we calculated the linear relationship between force and velocity, which allowed us to obtain the slope of the relationship (S-FV), the theoretical velocity at zero force (V-0), and the theoretical maximal power (P-max). DSI was obtained as a ratio from SJ peak force and F-iso. The convergent validity was investigated using Spearman&apos;s rho coefficients to assess the relationships between jump height and J with F-iso, V-0, S-FV, P-max, and DSI. The intrasession reliability was assessed using intraclass correlation coefficients (ICC) and coefficient of variations (CV). All variables demonstrated acceptable reliability scores. ICC ranged from moderate to excellent, and the mean CV was &lt;10%. We found a &quot;very large&quot; correlation between jump J and P-max, while jump height was not correlated with any variable. In conclusion, the IMTP and SJ combination is a practical way to determine FVP producing capacities that can be reliably measured (intrasession). The P-max, derived from FVP, was correlated with jump performance, which might evidence the convergent validity of the method.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30306 - Sport and fitness sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PeerJ

ISSN

2167-8359

e-ISSN

2167-8359

Svazek periodika

12

Číslo periodika v rámci svazku

November

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

18371

Kód UT WoS článku

001354516500004

EID výsledku v databázi Scopus

2-s2.0-85209213745