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Erschienen in: Sport Sciences for Health 1/2015

01.04.2015 | Original Article

Isoload vs isokinetic eccentric exercise: a direct comparison of exercise-induced muscle damage and repeated bout effect

verfasst von: Giuseppe Coratella, Luciano Bertinato

Erschienen in: Sport Sciences for Health | Ausgabe 1/2015

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Abstract

Purpose

This study compared the exercise induced muscle damage and repeated bout effect after isoload vs isokinetic eccentric supra-maximal single session.

Methods

Thirty sport science male students were randomly divided in isokinetic (IK) and isoload (IL) eccentric training. Creatin kinase (CK) serum activity, muscle soreness and strength decrement measured both in dynamic and isometric modalities were recorded at baseline, immediately after and up to 4 days following 48 supramaximal IK or IL eccentric contractions. Same protocol was repeated after 4 weeks. A three-way repeated measures ANOVA was used to detect differences in dependent variables comparing group × bout × time.

Results

No three-way interaction occurred in dependent variables. Bout × time resulted in a significant interaction in all dependent variables. Muscle damage markers resulted significantly altered compared to baseline up to 4 days. However, IL showed significantly greater CK, muscle soreness and strength deficit compared to IK. All parameters were significantly reduced after second compared to first bout. Difference between IL and IK after second bout was not overall significant.

Conclusion

IK vs IL supra-maximal eccentric contraction is showed to have different muscle damage symptoms. Protection conferred by first bout reduced muscle damage after 4 weeks and decreased difference between IL and IK.
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Metadaten
Titel
Isoload vs isokinetic eccentric exercise: a direct comparison of exercise-induced muscle damage and repeated bout effect
verfasst von
Giuseppe Coratella
Luciano Bertinato
Publikationsdatum
01.04.2015
Verlag
Springer Milan
Erschienen in
Sport Sciences for Health / Ausgabe 1/2015
Print ISSN: 1824-7490
Elektronische ISSN: 1825-1234
DOI
https://doi.org/10.1007/s11332-014-0213-x

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