Journal of Sports Science and Medicine
Journal of Sports Science and Medicine
ISSN: 1303 - 2968   
Ios-APP Journal of Sports Science and Medicine
Androit-APP Journal of Sports Science and Medicine
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©Journal of Sports Science and Medicine (2018) 17, 117 - 123

Research article
Effect of Endurance Training on The Lactate and Glucose Minimum Intensities
Pedro B. Junior1, Vitor L. de Andrade2, , Eduardo Z. Campos3, Carlos A. Kalva-Filho4, Alessandro M. Zagatto5, Gustavo G. de Araújo1, Marcelo Papoti4,5
Author Information
1 Federal University of Alagoas, Maceió/Alagoas, Brazil
2 Biosciences Institute, Universidade Estadual Paulista “Julio de Mesquita Filho”, Rio Claro, São Paulo, Brazil
3 Federal University of Pernambuco, Recife/Pernambuco, Brazil
4 Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
5 School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

Vitor L. de Andrade
✉ MSc Biosciences Institute, Department of Physical Education, São Paulo State University (UNESP) – Rio Claro/SP, Brazil
Email: vitor.luiz.de.andrade@gmail.com
Publish Date
Received: 20-09-2017
Accepted: 28-11-2017
Published (online): 01-03-2018
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ABSTRACT

Due to the controversy about the sensitive of lactate minimum intensity (LMI) to training and the need to develop other tool for aerobic fitness evaluation, the purpose of this study was to analyze the sensitivity of glucose minimum intensity (GMI) and LMI to endurance training. Eight trained male cyclists (21.4 ± 1.9 years, 67.6 ± 7.5 kg and 1.72 ± 0.10 m) were evaluated twice, before and after 12 weeks of training. GMI and LMI were calculated, respectively, by the lowest blood glucose and lactate values attained during an incremental test performed after a hyperlactemia induction, and VO2max was determined during standard incremental effort. The training was prescribed in three different zones and controlled by heart rate (HR). The training distribution was equivalent to 59.7%, 25.0% and 15.3% below, at and above anaerobic threshold HR respectively. The anaerobic threshold evaluated by GMI and LMI improvement 9.89 ± 4.35% and 10.28 ± 9.89 respectively, after training, but the VO2max 2.52 ± 1.81%. No differences were found between GMI and LMI in pre (218.2 ± 22.1 vs 215.0 ± 18.6 W) and post (240.6 ± 22.9 vs 237.5 ± 18.8 W) training situations. LMI and GMI were sensitive to 12-week aerobic training in cyclist; thus, both protocols can be used to assess aerobic adaptation, athletes diagnostic and prescribe training.

Key words: Anaerobic threshold, endurance capacity, cyclists


           Key Points
  • The lactate and glucose minimum intensities (GMI) can be used for monitoring training effects on cyclists
  • Although both GMI and lactate minimum intensities are important index of aerobic fitness, they cannot be used to determine aerobic fitness.
  • The polarized training was effective for improvements of maximal oxygen uptake on trained cyclists.
 
 
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