title: Effect of whole-body periodic acceleration on exercise-induced muscle damage after eccentric exercise.
abstract: OBJECTIVE
  To examine the effects of whole-body periodic acceleration (pGz) on exercise-induced-muscle-damage (EIMD) -related symptoms induced by unaccustomed eccentric arm exercise.
  
  
  METHODS
  Seventeen active young men (23.4 ± 4.6 y) made 6 visits to the research facility over a 2-wk period. On day 1, subjects performed a 1-repetition-maximum (1RM) elbow-flexion test and were randomly assigned to the pGz (n = 8) or control group (n = 9). Criterion measurements were taken on day 2, before and immediately after performance of the eccentric-exercise protocol (10 sets, 10 repetitions using 120% 1RM) and after the recovery period. During subsequent sessions (24, 48, 72, and 96 h) these data were collected before pGz or passive recovery. Measurements included isometric strength (maximal voluntary contraction [MVC]), blood markers (creatine kinase, myoglobin, IL-6, TNF-α, TBARS, PGF2α, protein carbonyls, uric acid, and nitrites), soreness, pain, circumference, and range of motion (ROM).
  
  
  RESULTS
  Significantly higher MVC values were seen for pGz throughout the recovery period. Within-group differences were seen in myoglobin, IL-6, IL-10, protein carbonyls, soreness, pain, circumference, and ROM showing small negative responses and rapid recovery for the pGz condition.
  
  
  CONCLUSIONS
  Our results demonstrate that pGz can be an effective tool for the reduction of EIMD and may contribute to the training-adaptation cycle by speeding up the recovery of the body due to its performance-loss-lessening effect.
authors.affiliation: Dept of Teaching and Learning, Florida International University, Miami, FL.
authors.forename: Daniel H
authors.initials: DH
authors.lastname: Serravite
authors.forename: Arlette
authors.initials: A
authors.lastname: Perry
authors.forename: Kevin A
authors.initials: KA
authors.lastname: Jacobs
authors.forename: Jose A
authors.initials: JA
authors.lastname: Adams
authors.forename: Kysha
authors.initials: K
authors.lastname: Harriell
authors.forename: Joseph F
authors.initials: JF
authors.lastname: Signorile
mesh_terms: D000054:Acceleration; D000328:Adult; D001132:Arm / Q000502:physiology; D001696:Biomechanical Phenomena; D003402:Creatine Kinase / Q000097:blood; D016207:Cytokines / Q000097:blood; D015444:Exercise / Q000502:physiology*; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000293:injuries*; D063806:Myalgia / Q000503:physiopathology; D009211:Myoglobin / Q000097:blood; D009573:Nitrites / Q000097:blood; D050050:Protein Carbonylation; D020127:Recovery of Function; D019876:Sports Equipment; D055815:Young Adult
chemical_list: D016207:Cytokines; D009211:Myoglobin; D009573:Nitrites; D003402:Creatine Kinase