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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Meneghel, Adilson J. Verlengia, Rozangela Crisp, Alex H. Aoki, Marcelo S. Nosaka, Kazunori da Mota, Gustavo R. Lopes, Charles R. |
| Description | Country affiliation: Brazil Author Affiliation: Meneghel AJ ( 1Human Performance Research Group-College of Health Science, Methodist University of Piracicaba (UNIMEP), Piracicaba, Sao Paulo, Brazil) |
| Abstract | The present study tested the hypothesis that resistance-trained individuals would also show less muscle damage in the second than in the first eccentric exercise bout (i.e., repeated bout effect) as shown in untrained individuals. This study investigated changes in indirect markers of muscle damage after 2 bouts of free weight eccentric exercise performed by 8 resistance-trained men. The participants (24.4 ± 1.2 years) performed 4 sets of 8 eccentric actions (3 seconds for each repetition) at 70% of eccentric 1 repetition maximum (1RM) load in a bench press exercise with 2 minutes of rest between sets, and repeated the same exercise 2 weeks later. Bench press 1RM, delayed onset muscle soreness (DOMS) assessed by a 6-point Likert scale, serum creatine kinase (CK) activity, and plasma prostaglandin E2 concentration (PGE2) were measured before and 24, 48, 72, and 96 hours after the exercise, and the changes were compared between bouts. The changes in the variables were smaller (p ≤ 0.05) after the second than the first bout indicated by a smaller decline in 1RM strength (first bout: -10.2 ± 1.0% vs. second bout: -5.7 ± 1.5%), peak DOMS (3.8 ± 0.4 vs. 1.7 ± 0.5), peak CK (637.3 ± 133.3 vs. 305.4 ± 63.6 IU·L), and peak PGE2 (761.2 ± 171.0 vs. 307.2 ± 48.3 pg·mL). These results show a typical repeated bout effect. Thus, it is concluded that the repeated bout effect occurs in resistance-trained individuals. |
| File Format | HTM / HTML |
| ISSN | 10648011 |
| Issue Number | 10 |
| Volume Number | 28 |
| e-ISSN | 15334287 |
| Journal | Journal of Strength and Conditioning Research |
| Language | English |
| Publisher | Lippincott Williams & Wilkins |
| Publisher Date | 2014-10-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Sport Sciences Muscle, Skeletal Pathology Myalgia Etiology Resistance Training Adverse Effects Weight Lifting Adult Creatine Kinase Blood Dinoprostone Exercise Test Humans Male Physiology Young Adult Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science |
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