Biology of Sport
pISSN 0860-021X    eISSN 2083-1862
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Journal Abstract
 
The midpoint between ventilatory thresholds approaches maximal lactate steady state intensity in amateur cyclists
Ana Belén Peinado, Dalton Muller Pessôa Filho, Vítor Díaz, Pedro José Benito, María Álvarez-Sánchez, Augusto García Zapico, Francisco Javier Calderón
Biol Sport 2016; 33(4):373-380
ICID: 1221812
Article type: Original article
IC™ Value: 10.00
Abstract provided by Publisher
 
The aim was to determine whether the midpoint between ventilatory thresholds (MPVT) corresponds to maximal lactate steady state (MLSS). Twelve amateur cyclists (21.0 ± 2.6 years old; 72.2 ± 9.0 kg; 179.8 ± 7.5 cm) performed an incremental test (25 W·min-1) until exhaustion and several constant load tests of 30 minutes to determine MLSS, on different occasions. Using MLSS determination as the reference method, the agreement with five other parameters (MPVT; first and second ventilatory thresholds: VT1 and VT2; respiratory exchange ratio equal to 1: RER = 1.00; and Maximum) was analysed by the Bland-Altman method. The difference between workload at MLSS and VT1, VT2, RER=1.00 and Maximum was 31.1 ± 20.0, -86.0 ± 18.3, -63.6 ± 26.3 and -192.3 ± 48.6 W, respectively. MLSS was underestimated from VT1 and overestimated from VT2, RER = 1.00 and Maximum. The smallest difference (-27.5 ± 15.1 W) between workload at MLSS and MPVT was in better agreement than other analysed parameters of intensity in cycling. The main finding is that MPVT approached the workload at MLSS in amateur cyclists, and can be used to estimate maximal steady state.

ICID 1221812

DOI 10.5604/20831862.1221812
 
FULL TEXT 1189 KB


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