title: Relationships of isometric mid-thigh pull variables to weightlifting performance.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the relationship between weightlifting performance (snatch, clean and jerk, and total) and variables obtained from the isometric mid-thigh pull (IMTP).
  
  
  METHODS
  Twelve weightlifters, ranging from novice to advanced, performed the IMTP 10 days after a competition. Correlations were used to evaluate relationships between variables of the IMTP and absolute and scaled competition results.
  
  
  RESULTS
  Unscaled competition results correlated strongly with IRFD (0-200ms: r=0.567-0.645, 0-250ms: r=0.722-0.781) while results correlated weakly with Peak IRFD (5ms window, r=0.360-0.426). Absolute peak force values correlated very strongly with absolute values for the competition performance (r=0.830-0.838). Force at 100ms, 150ms, 200ms and 250ms also correlated strongly with competition results (r=0.643-0.647, r=0.605-0.636, r=0.714-0.732, r=0.801-0.804). Similar findings were noted for allometrically scaled values.
  
  
  CONCLUSIONS
  Measures of average IRFD probably represent a more relevant variable to dynamic performance than does Peak IRFD (5ms). Maximum isometric strength also is likely to have a strong role in weightlifting performance.
authors.affiliation: Department of Exercise and Sports Science, Center of Excellence For Sport Science and Coach Education East Tennessee State University, Johnson City, TN, USA - stonem@etsu.edu.
authors.forename: G
authors.initials: G
authors.lastname: Beckham
authors.forename: S
authors.initials: S
authors.lastname: Mizuguchi
authors.forename: C
authors.initials: C
authors.lastname: Carter
authors.forename: K
authors.initials: K
authors.lastname: Sato
authors.forename: M
authors.initials: M
authors.lastname: Ramsey
authors.forename: H
authors.initials: H
authors.lastname: Lamont
authors.forename: G
authors.initials: G
authors.lastname: Hornsby
authors.forename: G
authors.initials: G
authors.lastname: Haff
authors.forename: M
authors.initials: M
authors.lastname: Stone
mesh_terms: D005260:Female; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D053580:Muscle Strength / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D055070:Resistance Training / Q000379:methods*; D013848:Thigh / Q000502:physiology; D014891:Weight Lifting / Q000502:physiology*