Home > Riviste > The Journal of Sports Medicine and Physical Fitness > Fascicoli precedenti > The Journal of Sports Medicine and Physical Fitness 2016 December;56(12) > The Journal of Sports Medicine and Physical Fitness 2016 December;56(12):1540-6

ULTIMO FASCICOLO
 

ARTICLE TOOLS

Publication history
Estratti
Per citare questo articolo

THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS

Rivista di Medicina, Traumatologia e Psicologia dello Sport


Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,215


eTOC

 

ORIGINAL ARTICLE  EPIDEMIOLOGY AND CLINICAL MEDICINE


The Journal of Sports Medicine and Physical Fitness 2016 December;56(12):1540-6

Copyright © 2016 EDIZIONI MINERVA MEDICA

lingua: Inglese

Muscle damage and repeated bout effect induced by enhanced eccentric squats

Giuseppe CORATELLA, Alessandro CHEMELLO, Federico SCHENA

Department of Neurological and Movement Sciences, University of Verona, Verona, Italy


PDF  


BACKGROUND: Muscle damage and repeated bout effect have been studied after pure eccentric-only exercise. The aim of this study was to evaluate muscle damage and repeated bout effect induced by enhanced eccentric squat exercise using flywheel device.
METHODS: Thirteen healthy males volunteered for this study. Creatine kinase blood activity (CK), quadriceps isometric peak torque and muscle soreness were used as markers of muscle damage. The dependent parameters were measured at baseline, immediately after and each day up to 96 hours after the exercise session. The intervention consisted of 100 repetitions of enhanced eccentric squat exercise using flywheel device. The same protocol was repeated after 4 weeks.
RESULTS: After the first bout, CK and muscle soreness were significantly greater (P<0.05) than baseline respectively up to 72 and 96 hours. Isometric peak torque was significantly lower (P<0.05) up to 72 hours. After the second bout, CK showed no significant increase (P>0.05), while isometric peak torque and muscle soreness returned to values similar to baseline after respectively 48 and 72 hours. All muscle damage markers were significantly lower after second compared to first bout.
CONCLUSIONS: The enhanced eccentric exercise induced symptoms of muscle damage up to 96 hours. However, it provided muscle protection after the second bout, performed four weeks later. Although it was not eccentric-only exercise, the enhancement of eccentric phase provided muscle protection.


KEY WORDS: Torque - Creatine kinase - Myalgia - Isometric contraction - Muscle strength

inizio pagina

Publication History

Issue published online: December 12, 2016
Article first published online: November 27, 2015
Manuscript accepted: November 25, 2015
Manuscript revised: November 11, 2015
Manuscript received: July 10, 2015

Per citare questo articolo

Coratella G, Chemello A, Schena F. Muscle damage and repeated bout effect induced by enhanced eccentric squats. J Sports Med Phys Fitness 2016;56:1540-6

Corresponding author e-mail

giuseppe.coratella@univr.it