title: Reduced high-intensity-running rate in collegiate women's soccer when games are separated by 42 hours.
abstract: OBJECTIVE
  During the competitive soccer season, women's intercollegiate matches are typically played on Friday evenings and Sunday afternoons. The efficacy of a 42-h recovery period is not well understood. This investigation was conducted to determine performance differences between Friday and Sunday matches during a competitive season.
  
  
  METHODS
  Ten NCAA Division I female soccer players (20.5±1.0 y, 166.6±5.1 cm, 61.1±5.8 kg) were monitored with 10-Hz GPS devices across 8 weekends with matches played on Friday evenings and Sunday afternoons. The players were outside backs, midfielders, and forwards. All players had to participate in a minimum of 45 min/match to be included in the study. Average minutes played, total distance covered, total distance of high-intensity running (HIR) (defined as running at a velocity equal to or exceeding 3.61 m/s for longer than 1 s), the number of HIR efforts, and the number of sprints were calculated for each match. Data for Friday vs Sunday matches were averaged and then compared using dependent t tests.
  
  
  RESULTS
  No differences were seen in minutes played, distance rate, or number of sprints between Friday and Sunday matches. A significant (P=.017) decrease in rate of HIR between Friday (25.37±7.22 m/min) and Sunday matches (22.90±5.70 m/min) was seen. In addition, there was a trend toward a difference (P=.073) in the number of efforts of HIR between Friday (138.41±36.43) and Sunday (126.92±31.31).
  
  
  CONCLUSIONS
  NCAA Division I female soccer players cover less distance of HIR in games played less than 48 h after another game. This could be due to various factors such as dehydration, glycogen depletion, or muscle damage.
authors.affiliation: Dept of Health and Human Sciences, Loyola Marymount University, Los Angeles, CA.
authors.forename: William P
authors.initials: WP
authors.lastname: McCormack
authors.forename: Jay R
authors.initials: JR
authors.lastname: Hoffman
authors.forename: Gabriel J
authors.initials: GJ
authors.lastname: Pruna
authors.forename: Tyler C
authors.initials: TC
authors.lastname: Scanlon
authors.forename: Jonathan D
authors.initials: JD
authors.lastname: Bohner
authors.forename: Jeremy R
authors.initials: JR
authors.lastname: Townsend
authors.forename: Adam R
authors.initials: AR
authors.lastname: Jajtner
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Stout
authors.forename: Maren S
authors.initials: MS
authors.lastname: Fragala
authors.forename: David H
authors.initials: DH
authors.lastname: Fukuda
mesh_terms: D054874:Athletic Performance; D005260:Female; D006801:Humans; D010807:Physical Endurance / Q000502:physiology*; D012420:Running / Q000502:physiology*; D012916:Soccer / Q000502:physiology*; D013647:Task Performance and Analysis; D013997:Time Factors; D055815:Young Adult