Precisão da medida do limiar anaeróbio por meio do calorímetro portátil

Nogueira, Fernando dos Santos; Pompeu, Fernando

doi:10.1590/s0066-782x2010005000090

Cited by 4 publications

(4 citation statements)

References 38 publications

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“…Granja Filho et al (1) observed an intra-individual variation index of 5.5% for the O 2max . Nogueira and Pompeu (21) and Magrani and Pompeu (31) observed satisfactory indices for the measurements analysed in equipment used in this study. There are differences in the measures obtained by this equipment when they are compared with the ones derived from more sophisticated equipments (3.8% versus 5.5%), the ergospirometer here adopted was validated by another group (16) and is widely applied in Brazilian laboratories.…”

Section: Discussionsupporting

confidence: 57%

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Resposta da cinética de consumo de oxigênio e da eficiência mecânica delta de homens e mulheres em diferentes intensidades de esforço

Cerqueira¹,

Nogueira²,

Carvalho³

et al. 2011

Rev Bras Med Esporte

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Introduction and objective: Delta efficiency (DE) and oxygen uptake kinetics (K O 2 ) are influenced by muscle metabolic parameters and oxygen transport. The aim of this study was to determine the difference in DE and K O 2 in three effort intensities in both genders. Methods: Fifty-six subjects (26 women) were submitted to a graded maximal exercise test (GXT) on cycle ergometer to determine the maximum oxygen uptake ( O 2max ), maximal power output (W max ), anaerobic threshold (AT) and respiratory compensation point (RCP). The AT and RCP were determined using the V-slope and E / O 2 methods; the RCP using the relationship O 2 versus E both by two investigators. The DE and K O 2 have been considered as a slope between O 2 versus Watts and O 2 versus time (s), respectively, from the beginning of test until AT (S 1 ), from AT to RCP (S 2 ) and from RCP to O 2max (S 3 ), determined by linear regression analysis. Results: Regarding DE, significant differences were observed between S 1 versus S 2 (p = 0.001), S 1 versus S 3 (p = 0.001) and S 2 versus S 3 (p = 0.006). There was no significant difference (p = 0.060) or interaction (p = 0.062) between men and women. For K O 2 , significant differences were observed between S 1 versus S 3 (p = 0.001) and S 2 versus S 3 (p = 0.001) in both genders. Significant differences (p = 0.001) and interaction (p = 0.006) were observed between men and women, in the last parameter. Conclusions: DE decreases with increasing intensity of power output, but there are no differences when comparing men and women. On the other hand, women present faster K O 2 than men.

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Section: Discussionsupporting

confidence: 57%

“…Descriptive statistics through mean ± mean standard error (MSE) was applied. The mean of the results obtained by the two evaluators from the EqV and V-slope methods was considered as the AT (21) . The mean of the two investigators was also used the PCR.…”

Section: Discussionmentioning

confidence: 99%

Resposta da cinética de consumo de oxigênio e da eficiência mecânica delta de homens e mulheres em diferentes intensidades de esforço

Cerqueira¹,

Nogueira²,

Carvalho³

et al. 2011

Rev Bras Med Esporte

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show abstract

“…The measurements quality control should be assured through calibration, operation and assessment procedures conducted by experienced technicians (23) . Tests in which these care measures are taken present low variation in the repeated measurements in close moments (15)(16)(17)23,24) . The intra-individual daily variation, due to error and physiological fluctuations of VO 2 , V E and HR are (24) respectively 3.8%, 8.0% and 3.0%.…”

Section: Discussionmentioning

confidence: 99%

“…Tests in which these care measures are taken present low variation in the repeated measurements in close moments (15)(16)(17)23,24) . The intra-individual daily variation, due to error and physiological fluctuations of VO 2 , V E and HR are (24) respectively 3.8%, 8.0% and 3.0%. Granja Filho et al (17) observed intra-individual variation index of 5.5% for the VO 2max .…”

Section: Discussionmentioning

confidence: 99%

Influência do protocolo ergométrico na ocorrência de diferentes critérios de esforço máximo

Lemos

Nogueira

Pompeu

2011

Rev Bras Med Esporte

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Introduction and Objectives: The aim of this study was to investigate the influence of different exercise protocols in the onset of maximal effort parameters. Methods: Nine healthy individuals (23 ± 4 year old; 177 ± 10 cm; and 77.1 ± 16 kg) participated in three progressive exercise tests (PR1 -15 W•min-1, PR2 -50 W•3 min-1, and PR3 -50 W•5 min-1) in a cycle ergometer. Oxygen consumption was measured in open circuit and was calculated at 20 s intervals. The maximal effort parameters considered here were: plateau in oxygen consumption ≤ 150 mL•min-1; maximal heart rate ≥ 95% predicted by age; blood lactate concentration (8.0 mM; and RER ≥ 1.1. Results: The VO2 max was not different among exercise tests (2.68 ± 1.0; 2.58 ± 1.0 and 2.99 ± 1.3 L•min-1 for PR1; PR2 and PR3, p = 0.72). The highest plateau occurrence was in PR1 (5 individuals). The heart rate criterion was observed in 3 individuals in PR3, while the lactate criterion was fulfilled in 6 subjects in the same PR3 protocol. Regarding the RER parameter, only 6 subjects in PR1 achieved values ≥ 1.1. Conclusion: It was concluded that the maximal effort parameters evaluated in this study are influenced by the exercise test, even when there are no differences in the VO2 max .

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Lack of concordance amongst measurements of individual anaerobic threshold and maximal lactate steady state on a cycle ergometer

Arratibel-Imaz¹,

Calleja-González²,

Emparanza

et al. 2015

The Physician and Sportsmedicine

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The fixed threshold of 4 mmol/l or OBLA produces slightly different and higher results than those obtained with all the methods analyzed, including MLSS, meaning an overestimation of power in the individual anaerobic threshold. The Dickhuth-TKM, Dmax and Dickhuth-WLa methods defined a high concordance on a cycle ergometer. Dickhuth-TKM, Dmax, Dickhuth-WLa described a high concordance with the power calculated to know the MLSS.

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Precisão da medida do limiar anaeróbio por meio do calorímetro portátil

Abstract: Background: Many methods are used for determining the Anaerobic Threshold (AT) by means of sophisticated ergospirometer.

Cited by 4 publications

References 38 publications

Resposta da cinética de consumo de oxigênio e da eficiência mecânica delta de homens e mulheres em diferentes intensidades de esforço

Resposta da cinética de consumo de oxigênio e da eficiência mecânica delta de homens e mulheres em diferentes intensidades de esforço

Influência do protocolo ergométrico na ocorrência de diferentes critérios de esforço máximo

Lack of concordance amongst measurements of individual anaerobic threshold and maximal lactate steady state on a cycle ergometer

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