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Localization and quantification of muscle damage by magnetic resonance imaging following step exercise in young women

Eccentric exercise affects muscles differentially according to intensity, duration, and previous exposure to the specific exercise activity. We used T2‐weighted magnetic resonance imaging sequences to localize and quantify muscle damage following step exercise and to determine correlations between t...

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Bibliographic Details
Published in:Scandinavian journal of medicine & science in sports 2007-02, Vol.17 (1), p.76-83
Main Authors: Larsen, R. G., Ringgaard, S., Overgaard, K.
Format: Article
Language:English
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Summary:Eccentric exercise affects muscles differentially according to intensity, duration, and previous exposure to the specific exercise activity. We used T2‐weighted magnetic resonance imaging sequences to localize and quantify muscle damage following step exercise and to determine correlations between transverse relaxation time (T2) and other markers of muscle damage. Eight women performed two‐step exercise bouts (30 min) separated by 8 weeks. Blood samples, MR scans, measurements of muscle strength, and muscle soreness were obtained immediately before, after, and up to 9 days after each bout. Resting muscle T2 (40.3±0.6 ms) increased exclusively in m. Adductor magnus (AM) in the thigh performing eccentric contractions and peaked 3 days after bout 1 (73.5±9.7 ms, P
ISSN:0905-7188
1600-0838
DOI:10.1111/j.1600-0838.2006.00525.x