title: Anaerobic work capacity's contribution to 5-km-race performance in female runners.
abstract: OBJECTIVE
  The purpose of this study was to examine the relationship between anaerobic characteristics and 5-km-race performance in trained female cross-country runners (N = 13).
  
  
  METHODS
  The runners performed 50-m sprints and a 5-km time trial on an outdoor 400-m track and maximal anaerobic (MART) and aerobic running tests on a motorized treadmill. Anaerobic characteristics were determined by the mean velocity of the 50-m sprint (v50m) and the peak velocity in the MART (vMART). The aerobic characteristics were obtained during the aerobic treadmill test and included maximal oxygen uptake (VO2max), running economy, and ventilatory threshold (VT).
  
  
  RESULTS
  Both the vMART (r = .69, P < .01) and VO2max (r = .80, P < .01) correlated with the mean velocity of the 5-km (v5km). A multiple-linear-regression analysis revealed that the combination of VO2max, vMART, and VT explained 81% (R2 = .81, P < .001) of the variation seen in the v5km. The vMART accounted for 31% of the total shared variance, while the combination of VO2max and VT explained the remaining 50%.
  
  
  CONCLUSIONS
  These results suggest that among trained female runners who are relatively matched, anaerobic energy production can effectively discriminate the v5km and explain a significant amount of the variation seen in 5-km-race performance.
authors.affiliation: Dept of Kinesiology and Health, Georgia State University, Atlanta, GA, USA.
authors.forename: Cory W
authors.initials: CW
authors.lastname: Baumann
authors.forename: Jeffrey C
authors.initials: JC
authors.lastname: Rupp
authors.forename: Christopher P
authors.initials: CP
authors.lastname: Ingalls
authors.forename: J Andrew
authors.initials: JA
authors.lastname: Doyle
mesh_terms: D015308:Anaerobic Threshold; D054874:Athletic Performance; D005080:Exercise Test; D005260:Female; D006801:Humans; D016014:Linear Models; D009119:Muscle Contraction; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000502:physiology*; D010101:Oxygen Consumption; D010807:Physical Endurance; D012123:Pulmonary Ventilation; D012420:Running; D013647:Task Performance and Analysis; D013997:Time Factors; D055815:Young Adult