Home > Riviste > The Journal of Sports Medicine and Physical Fitness > Fascicoli precedenti > The Journal of Sports Medicine and Physical Fitness 2018 May;58(5) > The Journal of Sports Medicine and Physical Fitness 2018 May;58(5):576-82

ULTIMO FASCICOLO
 

JOURNAL TOOLS

eTOC
Per abbonarsi
Sottometti un articolo
Segnala alla tua biblioteca
 

ARTICLE TOOLS

Publication history
Estratti
Permessi
Per citare questo articolo

 

ORIGINAL ARTICLE  EXERCISE PHYSIOLOGY AND BIOMECHANICS 

The Journal of Sports Medicine and Physical Fitness 2018 May;58(5):576-82

DOI: 10.23736/S0022-4707.17.07158-4

Copyright © 2017 EDIZIONI MINERVA MEDICA

lingua: Inglese

Lactacidemic variation and movement patterns during anaerobic power test

Vitor L. de ANDRADE 1, 2, Marcelo PAPOTI 1, 3, Eduardo ZAPATERRA CAMPOS 4, Carlos A. KALVA-FILHO 1, Ronaldo BUCKEN GOBBI 4, Luiz H. PALUCCI VIEIRA 1, Bruno SOUZA BEDO 1, Paulo R. PEREIRA SANTIAGO 1, 3

1 Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; 2 Institute of Biosciences, São Paulo State University, Rio Claro, Brazil; 3 School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil; 4 Department of Physical Education, São Paulo State University, Presidente Prudente, Brazil


PDF


BACKGROUND: After the Running Anaerobic Sprint Test (RAST) high blood lactate concentrations ([La-]) are found. However, no study verified the behavior of this metabolite during RAST. For this, the aim of the present study was to verify the implications of increase [La-] on movement patterns’ in RAST performance.
METHODS: Six healthy and active individuals (21.8±3.1 years, 70.9±10.8 kg and 179.7±3.3 cm) executed a standardized warm-up. Two minutes later, subjects performed RAST composed of six maximal 35-m bouts separated by 10 s of passive recovery. During RAST, 14 cameras monitored the subjects to determine tridimensional and bi-dimensional mechanics. [La-] were determined before warm-up, between each bout and after RAST.
RESULTS: Significant difference in performance were found after the fifth (5.1±0.1 s) and sixth (5.4±0.3 s; P<0.04) bout in relation to the first up to fourth effort. Fatigue indexes (FI% and FIREAL) were higher from fifth bout (19.2±9.4%; 19.3±10.9%; P<0.05). No significant difference was observed in [La-] on fifth and sixth bout (8.2±2.4 mM and 9.2±2.1 mM) however, both were different from all other bouts. Flight time was different between the fifth bout (0.16±0.03 s) when compared with the first (0.12±0.01 s; P=0.01) and second (0.13±0.02s; P=0.03) bouts.
CONCLUSIONS: RAST performance can be influenced by physiological changes. Biomechanical behavior does not alter performance without a sum of physiological events.


KEY WORDS: Soccer - Basketball - Football - Running - Lactates

inizio pagina