Time course of strength and echo intensity recovery after resistance exercise in women
Deutscher übersetzter Titel: | Der Zeitverlauf der Wiederherstellung der Kraft und der Echointensität nach Krafttraining bei Frauen |
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Autor: | Radaelli, Régis; Bottaro, Martim; Wilhelm, Eurico Nestor; Wagner, Dale R.; Pinto, Ronei Silveira |
Erschienen in: | Journal of strength and conditioning research |
Veröffentlicht: | 26 (2012), 9, S. 2577-2584, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 1064-8011, 1533-4287 |
DOI: | 10.1519/JSC.0b013e31823dae96 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201301000216 |
Quelle: | BISp |
Abstract
The purpose of this study was to evaluate the time course responses of strength, delayed-onset muscle soreness (DOMS), muscle thickness (MT), circumference (CIRC), and ultrasonography echo intensity (EI) after a traditional hypertrophic isoinertial resistance training session in young women. Ten (22.0 ± 3.2 years) healthy, untrained volunteers participated in the study. The resistance exercise session consisted of 4 sets of 10 repetitions at 80% of 1 repetition maximum (1RM) of the dominant arm elbow flexors. Maximum isometric elbow flexion peak torque (PT) at 90°, MT, and EI were recorded for both arms at baseline (PRE), immediately after exercise (0 hours) and at 24, 48, and 72 hours after exercise. Comparisons were made using a 2 × 5 mixed factor analysis of variance. There was a significant (p < 0.05) loss in PT and increase in MT at 0, 24, 48, and 72 hours. In contrast, EI increased only after 24, 48, and 72 hours, not at 0 hours. There were no significant changes in PT, DOMS, MT, and EI in the nondominant (control) arm after the exercise protocol. Our data suggest that after 4 sets of 80% of 1RM of unilateral elbow flexion resistance exercise, nonresistance trained women need >72 hours to fully recover muscle strength, MT, CIRC, and EI. Furthermore, the EI appears to be a sensitive and reliable method to assess MD. Verf.-Referat