Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State
Objective. The aim of this study was to verify the possibility of lactate minimum (LM) determination during a walking test and the validity of such LM protocol on predicting the maximal lactate steady-state (MLSS) intensity. Design. Eleven healthy subjects (24.2±4.5 yr; 74.3±7.7 kg; 176.9±4.1 cm) pe...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1100/2012/769431 |
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| author | Guilherme Morais Puga Eduardo Kokubun Herbert Gustavo Simões Fabio Yuzo Nakamura Carmen Sílvia Grubert Campbell |
| author_facet | Guilherme Morais Puga Eduardo Kokubun Herbert Gustavo Simões Fabio Yuzo Nakamura Carmen Sílvia Grubert Campbell |
| author_sort | Guilherme Morais Puga |
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| description | Objective. The aim of this study was to verify the possibility of lactate minimum (LM) determination during a walking test and the validity of such LM protocol on predicting the maximal lactate steady-state (MLSS) intensity. Design. Eleven healthy subjects (24.2±4.5 yr; 74.3±7.7 kg; 176.9±4.1 cm) performed LM tests on a treadmill, consisting of walking at 5.5 km⋅h−1 and with 20–22% of inclination until voluntary exhaustion to induce metabolic acidosis. After 7 minutes of recovery the participants performed an incremental test starting at 7% incline with increments of 2% at each 3 minutes until exhaustion. A polynomial modeling approach (LMp) and a visual inspection (LMv) were used to identify the LM as the exercise intensity associated to the lowest [bLac] during the test. Participants also underwent to 2–4 constant intensity tests of 30 minutes to determine the MLSS intensity. Results. There were no differences among LMv (12.6±1.7%), LMp (13.1±1.5%), and MLSS (13.6±2.1%) and the Bland and Altman plots evidenced acceptable agreement between them. Conclusion. It was possible to identify the LM during walking tests with intensity imposed by treadmill inclination, and it seemed to be valid on identifying the exercise intensity associated to the MLSS. |
| format | Article |
| id | doaj-art-abaef0ce59614f1d8ed3fcc2eb85d896 |
| institution | Kabale University |
| issn | 1537-744X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-abaef0ce59614f1d8ed3fcc2eb85d8962025-08-20T03:39:37ZengWileyThe Scientific World Journal1537-744X2012-01-01201210.1100/2012/769431769431Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady StateGuilherme Morais Puga0Eduardo Kokubun1Herbert Gustavo Simões2Fabio Yuzo Nakamura3Carmen Sílvia Grubert Campbell4Catholic University of Brasília, 72022-900 Brasília, DF, BrazilInstitute of Bioscience, Department of Physical Education, São Paulo State University, 13506-900 Rio Claro, SP, BrazilCatholic University of Brasília, 72022-900 Brasília, DF, BrazilDepartment of Physical Education, State University of Londrina, 86051-990 Londrina, PR, BrazilCatholic University of Brasília, 72022-900 Brasília, DF, BrazilObjective. The aim of this study was to verify the possibility of lactate minimum (LM) determination during a walking test and the validity of such LM protocol on predicting the maximal lactate steady-state (MLSS) intensity. Design. Eleven healthy subjects (24.2±4.5 yr; 74.3±7.7 kg; 176.9±4.1 cm) performed LM tests on a treadmill, consisting of walking at 5.5 km⋅h−1 and with 20–22% of inclination until voluntary exhaustion to induce metabolic acidosis. After 7 minutes of recovery the participants performed an incremental test starting at 7% incline with increments of 2% at each 3 minutes until exhaustion. A polynomial modeling approach (LMp) and a visual inspection (LMv) were used to identify the LM as the exercise intensity associated to the lowest [bLac] during the test. Participants also underwent to 2–4 constant intensity tests of 30 minutes to determine the MLSS intensity. Results. There were no differences among LMv (12.6±1.7%), LMp (13.1±1.5%), and MLSS (13.6±2.1%) and the Bland and Altman plots evidenced acceptable agreement between them. Conclusion. It was possible to identify the LM during walking tests with intensity imposed by treadmill inclination, and it seemed to be valid on identifying the exercise intensity associated to the MLSS.http://dx.doi.org/10.1100/2012/769431 |
| spellingShingle | Guilherme Morais Puga Eduardo Kokubun Herbert Gustavo Simões Fabio Yuzo Nakamura Carmen Sílvia Grubert Campbell Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State The Scientific World Journal |
| title | Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State |
| title_full | Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State |
| title_fullStr | Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State |
| title_full_unstemmed | Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State |
| title_short | Aerobic Fitness Evaluation during Walking Tests Identifies the Maximal Lactate Steady State |
| title_sort | aerobic fitness evaluation during walking tests identifies the maximal lactate steady state |
| url | http://dx.doi.org/10.1100/2012/769431 |
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