The effects of localised fatigue on upper extremity jump shot kinematics and kinetics in team handball.
Autor: | Plummer, Hillary A., Oliver, Gretchen D. |
---|---|
Předmět: |
ANALYSIS of variance
ATHLETIC ability STATISTICAL correlation DYNAMICS EXERCISE physiology HANDBALL KINEMATICS LONGITUDINAL method PROBABILITY theory ROTATIONAL motion SHOULDER joint STATISTICS STATISTICAL power analysis DATA analysis THROWING (Sports) REPEATED measures design MOTION capture (Human mechanics) DATA analysis software MUSCLE fatigue |
Zdroj: | Journal of Sports Sciences; Jan2017, Vol. 35 Issue 2, p182-188, 7p |
Abstrakt: | Team handball is a popular sport worldwide that requires numerous throws to be made throughout the course of a game. Because of the upper extremity demands of repetitive throwing, it is possible that fatigue can alter the mechanics of a shot. The purpose of this study was to determine the influence of localised fatigue on jump shot kinematics and kinetics. Eleven male team handball players (23.1 ± 3.1 years; 185.1 ± 8.3 cm; 89.7 ± 12.2 kg) volunteered. An electromagnetic tracking system was used to examine the jump shot prior to and following localised fatigue. The fatiguing protocol consisted of throwing a 2.2 kg medicine ball into a rebounder until volitional fatigue. No significant kinematic or kinetic differences were observed following fatigue. Shoulder external rotation was −74.8 ± 14.9° prior to and −79.0 ± 14.7° following fatigue at MER. Scapula, external rotation at ball release (BR) prior to fatigue was −2.2 ± 7.0° and −3.2 ± 11.1° following fatigue. Scapular internal rotation, at maximum shoulder internal rotation (MIR), changed from 18.4 ± 11.2° to 20.4 ± 11.8°. Ball velocity decreased from19.8 m · s–1to 18.8 m · s–1(P = 0.12). Accuracy percentage in the pre-fatigue trials was 60.8 ± 14.1% and 52.8 ± 12.7% following fatigue (P = 0.20). While no significant changes were observed, it is possible that other fatiguing protocols that more closely represent the aerobic and throwing demands of the sport may have a greater effect on the kinematics and kinetics of the jump shot. [ABSTRACT FROM AUTHOR] |
Databáze: | Complementary Index |
Externí odkaz: |