PMID- 27028245 OWN - NLM STAT- MEDLINE DCOM- 20170531 LR - 20191210 IS - 1466-447X (Electronic) IS - 0264-0414 (Linking) VI - 35 IP - 4 DP - 2017 Feb TI - Validity of a single lactate measure to predict fixed lactate thresholds in athletes. PG - 385-392 AB - This study aimed to validate the use of a single blood lactate concentration measure taken following a 12 km h(-1) running stage (BLC(12)) to predict and monitor fixed blood lactate concentration (FBLC) thresholds. Three complementary studies were undertaken. Study I: the relationships between BLC(12) and the running speeds at FBLC of 3 mmol L(-1) (S3mM) and 4 mmol L(-1) (S4mM) measured during a multistage running field test were examined in 136 elite athletes. Study II: data from 30 athletes tested one year apart were used to test the predictive capacity of the equations obtained in Study I. Study III: 80 athletes were tested before and after an intensified training period to examine whether training-induced changes in FBLC thresholds could be predicted and monitored by BLC(12). Study I: BLC(12) was significantly (P < 0.001) and inversely related to S3mM (R(2) = 0.89) and S4mM (R(2) = 0.95). Study II: prediction models yielded robust correlations between the estimated and measured FBLC thresholds (r = 0.94-0.99; P < 0.001). Study III: estimated changes predicted actual training-induced changes in FBLC thresholds (r = 0.81-0.91; P < 0.001). This study gives empirical support to use a single lactate measure during a sub-maximal running field test as a simple, low-cost and practical alternative to FBLC thresholds in athletes. FAU - Garcia-Tabar, Ibai AU - Garcia-Tabar I AD - a Studies, Research and Sports Medicine Centre , Government of Navarre , Pamplona , Spain. FAU - Llodio, Inaki AU - Llodio I AD - a Studies, Research and Sports Medicine Centre , Government of Navarre , Pamplona , Spain. FAU - Sanchez-Medina, Luis AU - Sanchez-Medina L AD - a Studies, Research and Sports Medicine Centre , Government of Navarre , Pamplona , Spain. FAU - Asiain, Xabier AU - Asiain X AD - b Spanish Basque-ball Federation , Madrid , Spain. FAU - Ibanez, Javier AU - Ibanez J AD - a Studies, Research and Sports Medicine Centre , Government of Navarre , Pamplona , Spain. FAU - Gorostiaga, Esteban M AU - Gorostiaga EM AD - a Studies, Research and Sports Medicine Centre , Government of Navarre , Pamplona , Spain. LA - eng PT - Journal Article PT - Validation Study DEP - 20160330 PL - England TA - J Sports Sci JT - Journal of sports sciences JID - 8405364 RN - 0 (Biomarkers) RN - 33X04XA5AT (Lactic Acid) SB - IM MH - Adult MH - Anaerobic Threshold/*physiology MH - Athletes MH - Biomarkers/blood MH - Exercise Test MH - Humans MH - Lactic Acid/*blood MH - Male MH - Oxygen Consumption MH - Physical Conditioning, Human/*physiology MH - Reproducibility of Results MH - Running/*physiology MH - Soccer MH - Young Adult OTO - NOTNLM OT - OBLA OT - anaerobic threshold OT - elite athletes OT - endurance training OT - exercise testing EDAT- 2016/03/31 06:00 MHDA- 2017/06/01 06:00 CRDT- 2016/03/31 06:00 PHST- 2016/03/31 06:00 [pubmed] PHST- 2017/06/01 06:00 [medline] PHST- 2016/03/31 06:00 [entrez] AID - 10.1080/02640414.2016.1166392 [doi] PST - ppublish SO - J Sports Sci. 2017 Feb;35(4):385-392. doi: 10.1080/02640414.2016.1166392. Epub 2016 Mar 30.