Blood lactate concentration at the maximal lactate steady state is not dependent on endurance capacity in healthy recreationally trained individuals

Smekal, Gerhard; Duvillard, Serge P. von; Pokan, Rochus; Hofmann, Peter; Braun, William A.; Arciero, Paul J.; Tschan, Harald; Wonisch, Manfred; Baron, Ramon; Bachl, Norbert

doi:10.1007/s00421-011-2283-7

Cited by 19 publications

(15 citation statements)

References 46 publications

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“…Lucia and co-workers [ 4 ] detected a high agreement between VT 1 and LT (321±8 W vs. 319±10 W) in elite endurance cyclists, and our data corroborates their findings in well trained cyclist. On the other hand, in an attempt to locate the VT 2 workload through a CBL test, Smekal et al [ 36 ] found that a value of 4.1±1.0 mMol·L -1 agrees with VT 2 in active and healthy men and women, which coincides with our findings ( Table 1 ). Nevertheless, Davis and co-workers [ 37 ] suggest that anaerobic thresholds have frequently been determined using blood lactate concentrations of less than 2 mMol·L -1 as a reference point.…”

Section: Discussionsupporting

confidence: 92%

“…In agreement with Skinner and McLellan [ 41 ], our results showed that MLSS does not correspond to VT 1 (aerobic threshold) or VT 2 (anaerobic threshold) but represents an intermediate intensity between both physiological events. This finding is important since numerous authors have proposed that the workload at VT 2 coincides with the one for MLSS [ 36 , 42 ], making it difficult for coaches and sport scientists to effectively communicate their findings and the effects produced by different training intensities. Other authors have tried to estimate the MLSS workload through CBL detected during a GXT.…”

Section: Discussionmentioning

confidence: 99%

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Validity and Reliability of Ventilatory and Blood Lactate Thresholds in Well-Trained Cyclists

et al. 2016

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PurposeThe purpose of this study was to determine, i) the reliability of blood lactate and ventilatory-based thresholds, ii) the lactate threshold that corresponds with each ventilatory threshold (VT1 and VT2) and with maximal lactate steady state test (MLSS) as a proxy of cycling performance.MethodsFourteen aerobically-trained male cyclists ( 62.1±4.6 ml·kg-1·min-1) performed two graded exercise tests (50 W warm-up followed by 25 W·min-1) to exhaustion. Blood lactate, and data were collected at every stage. Workloads at VT1 (rise in ;) and VT2 (rise in ) were compared with workloads at lactate thresholds. Several continuous tests were needed to detect the MLSS workload. Agreement and differences among tests were assessed with ANOVA, ICC and Bland-Altman. Reliability of each test was evaluated using ICC, CV and Bland-Altman plots.ResultsWorkloads at lactate threshold (LT) and LT+2.0 mMol·L-1 matched the ones for VT1 and VT2, respectively (p = 0.147 and 0.539; r = 0.72 and 0.80; Bias = -13.6 and 2.8, respectively). Furthermore, workload at LT+0.5 mMol·L-1 coincided with MLSS workload (p = 0.449; r = 0.78; Bias = -4.5). Lactate threshold tests had high reliability (CV = 3.4–3.7%; r = 0.85–0.89; Bias = -2.1–3.0) except for DMAX method (CV = 10.3%; r = 0.57; Bias = 15.4). Ventilatory thresholds show high reliability (CV = 1.6%–3.5%; r = 0.90–0.96; Bias = -1.8–2.9) except for RER = 1 and V-Slope (CV = 5.0–6.4%; r = 0.79; Bias = -5.6–12.4).ConclusionsLactate threshold tests can be a valid and reliable alternative to ventilatory thresholds to identify the workloads at the transition from aerobic to anaerobic metabolism.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Validity and Reliability of Ventilatory and Blood Lactate Thresholds in Well-Trained Cyclists

et al. 2016

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“…The MLSS constitutes another essential physiological event in endurance performance, as it is the maximal workload that can be maintained without elevations in blood lactate concentration (MLSS). Previous authors have proposed that MLSS workload coincides with the one for VT 2 (Smekal et al, 2012 ). In contrast to this assumption, recent investigations in cyclists elucidated that MLSS may correspond to a lower exercise intensity of VT 2 and matches better with the midpoint between both ventilatory thresholds (Pallarés et al, 2016 ; Peinado et al, 2016 ).…”

Section: Discussionmentioning

confidence: 78%

The Relationship Between Lactate and Ventilatory Thresholds in Runners: Validity and Reliability of Exercise Test Performance Parameters

et al. 2018

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The aims of this study were (1) to establish the best fit between ventilatory and lactate exercise performance parameters in running and (2) to explore novel alternatives to estimate the maximal aerobic speed (MAS) in well-trained runners. Twenty-two trained male athletes (trueV˙O2max 60.2 ± 4.3 ml·kg·min−1) completed three maximal graded exercise tests (GXT): (1) a preliminary GXT to determine individuals' MAS; (2) two experimental GXT individually adjusted by MAS to record the speed associated to the main aerobic–anaerobic transition events measured by indirect calorimetry and capillary blood lactate (CBL). Athletes also performed several 30 min constant running tests to determine the maximal lactate steady state (MLSS). Reliability analysis revealed low CV (<3.1%), low bias (<0.5 km·h−1), and high correlation (ICC > 0.91) for all determinations except V-Slope (ICC = 0.84). Validity analysis showed that LT, LT+1.0, and LT+3.0 mMol·L−1 were solid predictors of VT1 (−0.3 km·h−1; bias = 1.2; ICC = 0.90; p = 0.57), MLSS (−0.2 km·h−1; bias = 1.2; ICC = 0.84; p = 0.74), and VT2 (<0.1 km·h−1; bias = 1.3; ICC = 0.82; p = 0.9l9), respectively. MLSS was identified as a different physiological event and a midpoint between VT1 (bias = −2.0 km·h−1) and VT2 (bias = 2.3 km·h−1). MAS was accurately estimated (SEM ± 0.3 km·h−1) from peak velocity (Vpeak) attained during GXT with the equation: MASEST (km·h−1) = Vpeak (km·h−1) * 0.8348 + 2.308. Current individualized GXT protocol based on individuals' MAS was solid to determine both maximal and submaximal physiological parameters. Lactate threshold tests can be a valid and reliable alternative to VT and MLSS to identify the workloads at the transition from aerobic to anaerobic metabolism in well-trained runners. In contrast with traditional assumption, the MLSS constituted a midpoint physiological event between VT1 and VT2 in runners. The Vpeak stands out as a powerful predictor of MAS.

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“…Previous studies in experimental model and clinical studies have shown that lactate concentration in the steady state is independent of resistance capacity [13][14][15] . In humans, particularly, Beneke, Hütler, Leithäuser 11 verified that MLSS as well as MLSS intensity are independent of performance, however, subjects with higher performance have higher MLSS workloads.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of maximal lactate steady state in middle-aged hypertensive women

Ferreira

Jarrete

Esposti

et al. 2018

Motriz: rev. educ. fis.

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The aim of this study was to investigate the lactate response in physically inactive hypertensive women submitted to the treadmill maximal lactate steady state (MLSS) protocol. Methods: Twenty-two hypertensive women (40-64 years) performed a familiarization period of walking on the treadmill following by one incremental test for estimating the initial workload for exercise testing. MLSS protocol was composed by walking in a treadmill during thirty minutes with fixed velocity in 5.5 km/h. Incline was used for determination of the intensity of each volunteer. Blood samples were collected from the ear lobe in the rest period, minute 10 th and at the end of the test (minute 30 th or at exhaustion time point) for lactate analysis. Results: Hypertensive women showed a lower lactate concentration at MLSS (3.25 ± 0.81 mmol/L) as compared with data obtained in the literature (4 mmol/L), approximately 18.8%. Neither inclines nor age affected MLSS parameters in the population. A positive and strong correlation was found between incline and MLSS, as well as incline and lactate level at minute 30 th , even when adjusted by age factor. Conclusion: Physically inactive hypertensive women show a lower MLSS than the average established in the literature but within the range of variations previously reported. Furthermore, a higher MLSS incline correlates positive and directly with higher lactate concentrations for the same aerobic capacity regardless of age.

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Blood lactate concentration at the maximal lactate steady state is not dependent on endurance capacity in healthy recreationally trained individuals

Cited by 19 publications

References 46 publications

Validity and Reliability of Ventilatory and Blood Lactate Thresholds in Well-Trained Cyclists

Validity and Reliability of Ventilatory and Blood Lactate Thresholds in Well-Trained Cyclists

The Relationship Between Lactate and Ventilatory Thresholds in Runners: Validity and Reliability of Exercise Test Performance Parameters

Evaluation of maximal lactate steady state in middle-aged hypertensive women

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