title: Measurement of pulmonary gas exchange variables and lactic anaerobic capacity during field testing in elite indoor football players.
abstract: OBJECTIVE
  The aims of this study were: 1) to examine the gas exchange responses of elite indoor football players to a repeated sprint ability (RSA) test; and 2) to verify whether or not the excess of carbon dioxide production (CO2excess) correlates with blood lactate accumulation during RSA field testing.
  
  
  METHODS
  Eleven elite male indoor football players were recruited. A preliminary incremental exercise test on a treadmill was performed to elicit V'O2max. Then, participants underwent an RSA test consisting in a shuttle running through a course with various changes of direction while wearing a portable gas analyzer able to provide values of oxygen uptake, carbon dioxide production, and CO2excess. BLa concentrations during recovery were also measured.
  
  
  RESULTS
  The main results were that: 1) during the RSA test subjects did not reached the V'O2max level achieved in the preliminary test; 2) during the RSA test BLa levels were higher compared with the preliminary test; 3) the peak BLa concentration during recovery was significantly correlated with the average CO2excess
  
  
  CONCLUSIONS
  It was concluded that the RSA test did not appear to be useful to elicit V'O2max. Rather, it seemed suitable to recruit subjects' lactic anaerobic capacity. Moreover, CO2excess appeared suitable for qualitatively estimate BLa accumulation during field testing.
authors.affiliation: Department of Medical Science, Sport Physiology Lab. University of Cagliari, Cagliari, Italy - crisafulli@tiscali.it.
authors.forename: L
authors.initials: L
authors.lastname: Angius
authors.forename: M
authors.initials: M
authors.lastname: Cominu
authors.forename: M
authors.initials: M
authors.lastname: Filippi
authors.forename: C
authors.initials: C
authors.lastname: Piredda
authors.forename: G M
authors.initials: GM
authors.lastname: Migliaccio
authors.forename: M
authors.initials: M
authors.lastname: Pinna
authors.forename: R
authors.initials: R
authors.lastname: Milia
authors.forename: F
authors.initials: F
authors.lastname: Tocco
authors.forename: A
authors.initials: A
authors.lastname: Concu
authors.forename: A
authors.initials: A
authors.lastname: Crisafulli
mesh_terms: D000328:Adult; D015308:Anaerobic Threshold / Q000502:physiology*; D002245:Carbon Dioxide / Q000378:metabolism; D005080:Exercise Test; D005500:Follow-Up Studies; D005538:Football / Q000502:physiology*; D006801:Humans; D007773:Lactates / Q000097:blood*; D008297:Male; D010100:Oxygen / Q000378:metabolism*; D011659:Pulmonary Gas Exchange / Q000502:physiology*; D055815:Young Adult
chemical_list: D007773:Lactates; D002245:Carbon Dioxide; D010100:Oxygen