Time to task failure of the contralateral untrained limb after high load-low repetition eccentric and low load-high repetition resistance training
Motriz (Online)
;
23(2): e101619, 2017. graf
Article
Dans Anglais
| LILACS
| ID: biblio-841836
ABSTRACT
Abstract Aims:
Cross-training is the process whereby training of one limb gives rise to enhancements in the performance of the opposite, untrained limb and may be dependent on type of muscle contractions performed. The aim of this study was to investigate whether unilateral resistance training using eccentric contraction is more effective than concentric resistance training to improve time to task failure in the contralateral untrained limb.Methods:
Subjects completed 12 weeks of resistance training consisting of 36 sessions, using unilateral leg exercise. Sustained isometric knee extension performed at 50% of maxmal force until task failure for the contralateral untrained leg. Surface electromyography (EMG) signals were simultaneously recorded from contralateral untrained quadriceps (vastusmedialis, rectus femoris, and vastuslateralis).Results:
Time to task failure of the contralateraluntrained leg and associated EMG activitiessignificantly increased after 12 weeks ofunilateral resistance training(p<0.05). However, percent increase in time to task failure and EMG amplitude after eccentric resistance training was significantly higher than concentric resistance training (p<0.05).Conclusion:
This study concluded that unilateral eccentric resistancetraining is superior to concentric resistance training to increase time to task failure in the contralateral untrained limb.(AU)
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Exercice physique
/
Muscle quadriceps fémoral
/
Force musculaire
/
Entraînement en résistance
/
Contraction isométrique
Limites du sujet:
Adulte
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Motriz (Online)
Thème du journal:
EducaÆo F¡sica e Treinamento
/
Medicina Esportiva
/
Medicina F¡sica e ReabilitaÆo
Année:
2017
Type:
Article
Pays d'affiliation:
Iran
Institution/Pays d'affiliation:
University of Bojnord/IR
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