title: Relationship between serum creatine kinase activity following exercise-induced muscle damage and muscle fibre composition.
abstract: In this study, we examined the relationship between serum creatine kinase activity following exercise-induced muscle damage and muscle fibre composition. Seventeen untrained males volunteered and underwent a .[Vdot]O2max test, Wingate test, and an exercise-induced muscle damage protocol. Muscle soreness and blood samples were recorded before, immediately after, and 24, 48, 72, and 96 h after exercise. Biopsy samples from the vastus lateralis were collected one week after exercise-induced muscle damage and were assessed for muscle fibre composition. There was no significant relationship (P > 0.05) between muscle fibre composition and creatine kinase activity. A significant positive correlation (P < 0.05) was observed between soreness 48 h after exercise and type II and IIb fibres, and a significant negative correlation (P < 0.05) was observed between soreness 48 h after exercise and type I muscle fibres. Significant positive correlations were observed between soreness 48 h after exercise and the fatigue index, relative average power, and relative anaerobic capacity. Our results suggest that creatine kinase activity following exercise-induced muscle damage may not be related to muscle fibre proportions, and higher post-exercise muscular pain may be related to a predominance of type II muscle fibres and higher anaerobic capabilities.
authors.affiliation: Division of Mathematics and Science, North Carolina Wesleyan College, Rocky Mount, NC, USA.
authors.forename: Meir
authors.initials: M
authors.lastname: Magal
authors.forename: Charles L
authors.initials: CL
authors.lastname: Dumke
authors.forename: Zea G
authors.initials: ZG
authors.lastname: Urbiztondo
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Cavill
authors.forename: N Travis
authors.initials: NT
authors.lastname: Triplett
authors.forename: John C
authors.initials: JC
authors.lastname: Quindry
authors.forename: Jeff M
authors.initials: JM
authors.lastname: McBride
authors.forename: Yoram
authors.initials: Y
authors.lastname: Epstein
mesh_terms: D000328:Adult; D000693:Anaerobiosis; D001706:Biopsy; D003402:Creatine Kinase / Q000097:blood*; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology*; D018656:Muscle Fibers, Fast-Twitch / Q000378:metabolism*; D018657:Muscle Fibers, Slow-Twitch / Q000378:metabolism*; D010101:Oxygen Consumption; D010146:Pain / Q000097:blood; D005082:Physical Exertion / Q000502:physiology; D010809:Physical Fitness / Q000502:physiology; D052097:Quadriceps Muscle / Q000378:metabolism; D014891:Weight Lifting / Q000502:physiology; D055815:Young Adult
chemical_list: D003402:Creatine Kinase