THE ANALYSIS METHOD RESULTS IN DIFFERENCES IN THE EVALUATION OF DROP JUMP KINETICS: PROOF OF CONCEPT AT THREE DROPPING HEIGHTS

Authors

Christos Chalitsios PhD, 1) Biomechanics Laboratory, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, Greece; 2) Research & Development Department, KINVENT Biomecanique, Montpellier, FranceFollow
Vassilios Panoutsakopoulos PhD, Biomechanics Laboratory, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, GreeceFollow
Iraklis A. Kollias, Biomechanics Laboratory, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, Thessaloniki, GreeceFollow

Category

Running & Jumping

Document Type

Paper

Abstract

The purpose of the study was to examine possible variations in estimating the initial DJ conditions (landing velocity) and consequently drop jump (DJ) performance and kinetics when using different force-recording instrumentation (i.e., number of force-plates) and analysis methods. Volleyball players (n = 10) executed DJs from 20, 40, and 60 cm. Differences in drop (DropH) and jump (Hjump) height, and DJ biomechanical parameters were examined with the nominal single (SFP) and double force-plate method (DFP), as well as the drop (DTM) and flight time (FTM) method. Results indicated that DropH was different than the nominal when the DFP and DTM were applied, leading to absolute percentage differences in Hjump ranging from 16.1% to 26.6% across drop heights. Sports scientists are suggested to use DFP for accurately measuring the initial DJ conditions.

Recommended Citation

Chalitsios, Christos PhD; Panoutsakopoulos, Vassilios PhD; and Kollias, Iraklis A. (2025) "THE ANALYSIS METHOD RESULTS IN DIFFERENCES IN THE EVALUATION OF DROP JUMP KINETICS: PROOF OF CONCEPT AT THREE DROPPING HEIGHTS," ISBS Proceedings Archive: Vol. 43: Iss. 1, Article 15.
Available at: https://commons.nmu.edu/isbs/vol43/iss1/15