Estimation of the Maximal Lactate Steady State in Junior Soccer Players.
This study aimed to predict the velocity corresponding to the maximal lactate steady state (MLSS(V)) from non-invasive variables obtained during an incremental maximal running test (University of Montreal Track Test, UMTT) and to determine whether a single constant velocity test (CVT), performed several days after the UMTT, could estimate the MLSS(V). During a period of 3 weeks, 20 male junior soccer players performed: (1) a UMTT, and (2) several 20-min CVTs to determine MLSS(V) to a precision of 0.35 km·h(-1). Maximal aerobic velocity (MAV) and velocity at 80% of maximum heart rate (V80%HRmax) were strong predictors of MLSS(V). A regression equation was obtained: MLSS(V)=(1.106·MAV) - (0.309·V(80%HRmax)) - 3.024; R2=0.60. Running velocity during CVT (V(CVT)) and blood lactate at 10 (La10) and 20 (La20) minutes further improved the MLSS(V) prediction: MLSS(V)=V(CVT)+0.26 - (0.812·ΔLa(20-10)); R2=0.66. MLSS(V) can be estimated from MAV and V(80%HRmax) during a single incremental maximal running test among a homogeneous group of soccer players. This estimation can be improved by performing an additional CVT. In terms of accuracy, simplicity and cost-effectiveness, the reported regression equations can be used for the assessment and training prescription of endurance in team sport players.
Studies, Research and Sports Medicine Centre, Government of Navarre, Pamplona, Spain.
I
I
Llodio
Studies, Research and Sports Medicine Centre, Government of Navarre, Pamplona, Spain.
I
I
Garcia-Tabar
Studies, Research and Sports Medicine Centre, Government of Navarre, Pamplona, Spain.
L
L
Sánchez-Medina
Studies, Research and Sports Medicine Centre, Government of Navarre, Pamplona, Spain.
J
J
Ibáñez
E M
EM
Gorostiaga
D000293:Adolescent; D015308:Anaerobic Threshold / Q000502:physiology*; D005080:Exercise Test / Q000379:methods*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D019344:Lactic Acid / Q000097:blood*; D008297:Male; D010806:Physical Education and Training; D010807:Physical Endurance / Q000502:physiology; D059385:Plyometric Exercise; D012044:Regression Analysis; D012420:Running / Q000502:physiology*; D012916:Soccer / Q000502:physiology*
D019344:Lactic Acid