Effects of strenuous exercise on serum myosin heavy chain fragments in male triathletes
| Autor: | J.-F. Marini, E Prou, Irène Margaritis, F Tessier |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Adult
Male medicine.medical_specialty Time Factors Strenuous exercise Physical Therapy Sports Therapy and Rehabilitation Physical exercise Muscle damage Major histocompatibility complex Recovery period Internal medicine Myosin medicine Humans Orthopedics and Sports Medicine Muscle Skeletal Creatine Kinase Exercise biology Myosin Heavy Chains Chemistry Skeletal muscle Isoenzymes medicine.anatomical_structure Endocrinology Biochemistry biology.protein Physical Endurance Creatine kinase |
| Zdroj: | International journal of sports medicine. 17(4) |
| ISSN: | 0172-4622 |
| Popis: | During the Nice Triathlon (June 26, 1994), the serum levels of type I myosin heavy chain (MHC) fragments and creatine kinase (CK and CK-MB) activities were assessed in 12 athletes in order to evaluate the exercise-induced muscle damage. Blood samples (BS) were taken 2 days before the event (baseline), on arrival, 6 and 24 h later, and 2 and 4 days later. The mean results (and SD) were respectively: MHC (microU.I-1): 142 (69), 156 (116), 242 (144), 1183 (574), 2603 (1405), 1002 (523); CK (U.I-1): 109 (27), 626 (267), 1188 (562), 1159 (442), 633 (385), 224 (119). The CK peak occurred at BS-6h for 8 subjects, and at BS-24h for the other ones. The MHC peak occurred at BS-48h in all the subjects. The CK-MB/CK ratios exhibited a profile similar to those described previously. Serum MHC peak values were correlated with CK ones (r = 0.67; p < 0.05). After a four-day recovery period, as the CK values had decreased, the MHC levels were still elevated. The main result of the study is the MHC peak occurrence at BS-48h in all the subjects. |
| Databáze: | OpenAIRE |
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