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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Repeated bout effect after maximal eccentric exercise
International Journal of Sports Medicine, Volume 28, No. 7, Year 2007
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Description
We hypothesized that a bout of high or low volume eccentric exercise would protect against muscle damage following a subsequent high volume bout and that adaptation would be attributable to neural changes, independent of the initial exercise volume. Sixteen males performed either 45 (ECC45) or 10 (ECC10) maximal eccentric contractions using the elbow flexors, followed by an ECC45 bout 2 weeks later. Damage markers were measured for the following 96 h; EMG and work done during the first 10 eccentric contractions were also recorded. CK, soreness, and decrements in MVC and range of motion (ROM) were greater in bout 1 than bout 2 (p < 0.01). Soreness, MVC and ROM were greater after the initial ECC45 bout compared to the initial ECC10 bout and the repeated bouts of ECC45 exercise in both groups (p < 0.01). Median frequency decreased from bout 1 to bout 2 (p < 0.001), no differences between groups were observed. An ECC45 bout of maximal eccentric exercise causes more initial damage than an ECC10 bout of maximal eccentric exercise, although both confer protection from subsequent ECC45 bouts of maximal eccentric contractions, which are attributable, at least in part, to a shift in the frequency content of EMG. © Georg Thieme Verlag KG Stuttgart.
Authors & Co-Authors
Howatson, Glyn
United Kingdom, Twickenham
St Mary’s University, Twickenham
van Someren, Ken A.
United Kingdom, Manchester
English Institute of Sport
Hortobágyi, Tibor
United States, Greenville
East Carolina University
Statistics
Citations: 92
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.1055/s-2007-964866
ISSN:
01724622