title: GEDAE-LaB: A Free Software to Calculate the Energy System Contributions during Exercise.
abstract: OBJECTIVE
  The aim of the current study is to describe the functionality of free software developed for energy system contributions and energy expenditure calculation during exercise, namely GEDAE-LaB.
  
  
  METHODS
  Eleven participants performed the following tests: 1) a maximal cycling incremental test to measure the ventilatory threshold and maximal oxygen uptake (V̇O2max); 2) a cycling workload constant test at moderate domain (90% ventilatory threshold); 3) a cycling workload constant test at severe domain (110% V̇O2max). Oxygen uptake and plasma lactate were measured during the tests. The contributions of the aerobic (AMET), anaerobic lactic (LAMET), and anaerobic alactic (ALMET) systems were calculated based on the oxygen uptake during exercise, the oxygen energy equivalents provided by lactate accumulation, and the fast component of excess post-exercise oxygen consumption, respectively. In order to assess the intra-investigator variation, four different investigators performed the analyses independently using GEDAE-LaB. A direct comparison with commercial software was also provided.
  
  
  RESULTS
  All subjects completed 10 min of exercise at moderate domain, while the time to exhaustion at severe domain was 144 ± 65 s. The AMET, LAMET, and ALMET contributions during moderate domain were about 93, 2, and 5%, respectively. The AMET, LAMET, and ALMET contributions during severe domain were about 66, 21, and 13%, respectively. No statistical differences were found between the energy system contributions and energy expenditure obtained by GEDAE-LaB and commercial software for both moderate and severe domains (P > 0.05). The ICC revealed that these estimates were highly reliable among the four investigators for both moderate and severe domains (all ICC ≥ 0.94).
  
  
  CONCLUSIONS
  These findings suggest that GEDAE-LaB is a free software easily comprehended by users minimally familiarized with adopted procedures for calculations of energetic profile using oxygen uptake and lactate accumulation during exercise. By providing availability of the software and its source code we hope to facilitate future related research.
authors.affiliation: Endurance Performance Research Group (GEDAE-USP), School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
authors.forename: Rômulo
authors.initials: R
authors.lastname: Bertuzzi
authors.affiliation: Systems and Software Group, Department of Computer Science, University of São Paulo, São Paulo, Brazil.
authors.forename: Jorge
authors.initials: J
authors.lastname: Melegati
authors.affiliation: Endurance Performance Research Group (GEDAE-USP), School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
authors.forename: Salomão
authors.initials: S
authors.lastname: Bueno
authors.affiliation: Sports Science Research Group, Department of Physical Education and Sports Science (CAV), Federal University of Pernambuco, Pernambuco, Brazil.
authors.forename: Thaysa
authors.initials: T
authors.lastname: Ghiarone
authors.affiliation: Endurance Performance Research Group (GEDAE-USP), School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
authors.forename: Leonardo A
authors.initials: LA
authors.lastname: Pasqua
authors.affiliation: Endurance Performance Research Group (GEDAE-USP), School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil.
authors.forename: Arthur Fernandes
authors.initials: AF
authors.lastname: Gáspari
authors.affiliation: Sports Science Research Group, Department of Physical Education and Sports Science (CAV), Federal University of Pernambuco, Pernambuco, Brazil.
authors.forename: Adriano E
authors.initials: AE
authors.lastname: Lima-Silva
authors.affiliation: Systems and Software Group, Department of Computer Science, University of São Paulo, São Paulo, Brazil.
authors.forename: Alfredo
authors.initials: A
authors.lastname: Goldman
mesh_terms: D000328:Adult; D015444:Exercise; D006801:Humans; D010101:Oxygen Consumption; D012984:Software; D055815:Young Adult