Blood lactate parameters related to aerobic capacity and endurance performance

Yoshida, Takayoshi; Chida, Mamoru; Ichioka, Masahiko; Suda, Yoshihiro

doi:10.1007/bf00696368

Cited by 153 publications

(93 citation statements)

References 28 publications

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“…Numerous earlier studies reported an association between lactate and ventilatory thresholds and exercise performance (3,19,25,26,50). However, these studies focused on the relationships among direct blood lactate measurements (19,26,50) or indirect methods using gas exchange (3,25), but not between blood-and ventilation-based methods and exercise performance. Moreover, these associations have not been thoroughly explored in hot or cool environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have aimed to compare different methods to determine the lactate and ventilatory thresholds using different protocols (9,11,35,40), although it is difficult to draw conclusions, as the results heavily depend on the specific methodologies used (e.g., cycle or treadmill, duration of exercise stage, blood sampling site). Others have attempted to investigate the relationship between lactate or ventilatory threshold and exercise performance in thermoneutral conditions (6,19,50). However, these studies commonly fail to standardize the comparisons to a specific environmental condition (laboratory vs. field) or activity (treadmill vs. road running) when comparing lactate or ventilatory threshold with exercise performance.…”

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confidence: 99%

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Lactate threshold predicting time-trial performance: impact of heat and acclimation

Lorenzo

Minson

Babb

et al. 2011

Journal of Applied Physiology

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Lorenzo S, Minson CT, Babb TG, Halliwill JR. Lactate threshold predicting time-trial performance: impact of heat and acclimation. J Appl Physiol 111: 221-227, 2011. First published April 28, 2011 doi:10.1152/japplphysiol.00334.2011The relationship between exercise performance and lactate and ventilatory thresholds under two distinct environmental conditions is unknown. We examined the relationships between six lactate threshold methods (blood-and ventilation-based) and exercise performance in cyclists in hot and cool environments. Twelve cyclists performed a lactate threshold test, a maximal O2 uptake (V O2max) test, and a 1-h time trial in hot (38°C) and cool (13°C) conditions, before and after heat acclimation. Eight control subjects completed the same tests before and after 10 days of identical exercise in a cool environment. The highest correlations were observed with the blood-based lactate indexes; however, even the indirect ventilation-based indexes were well correlated with mean power during the time trial. Averaged bias was 15.4 Ϯ 3.6 W higher for the ventilation-than the blood-based measures (P Ͻ 0.05). The bias of blood-based measures in the hot condition was increased: the time trial was overestimated by 37.7 Ϯ 3.6 W compared with only 24.1 Ϯ 3.2 W in the cool condition (P Ͻ 0.05). Acclimation had no effect on the bias of the blood-based indexes (P ϭ 0.51) but exacerbated the overestimation by some ventilation-based indexes by an additional 34.5 Ϯ 14.1 W (P Ͻ 0.05). Blood-based methods to determine lactate threshold show less bias and smaller variance than ventilation-based methods when predicting time-trial performance in cool environments. Of the blood-based methods, the inflection point between steady-state lactate and rising lactate (INFL) was the best method to predict time-trial performance. Lastly, in the hot condition, ventilation-based predictions are less accurate after heat acclimation, while blood-based predictions remain valid in both environments after heat acclimation. heat stress; heat acclimation; heat acclimatization; critical power; endurance exercise SEVERAL PHYSIOLOGICAL PARAMETERS, namely, maximal O 2 uptake (V O 2max ), lactate threshold, ventilatory threshold, fraction of slow-twitch fibers, and running economy, are known to be related to (or predictive of) endurance exercise performance (12,13,19). As the margins for success in athletic competition are often quite small, coaches, athletes, and physiologists have long been interested in assessing an individual athlete's lactate or ventilatory threshold, in an effort to use such information to design more effective training plans, optimize an athlete's performance, or make race-day predictions. The terms "lactate threshold" and "ventilatory threshold" have generally been used to define the highest work rate or O 2 uptake (V O 2 ) at which athletes can maintain their efforts over a specified time frame. To the best of our knowledge, no study has focused on simultaneously determining the accuracy of lactate threshold vs. ventila...

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Lactate threshold predicting time-trial performance: impact of heat and acclimation

Lorenzo

Minson

Babb

et al. 2011

Journal of Applied Physiology

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“…B l o o d l a c t a t e c o n c e n t r a t i o n ( L A ) d u r i n g submaximal exercise is closely related to aerobic capacity, especially, lactate threshold (LT) and OBLA (Onset of Blood Lactate Accumulation) are indicators of aerobic capacity better or at least no worse than V ・ of aerobic capacity better or at least no worse than ・ of aerobic capacity better or at least no worse than O 2 max [Yoshida et al, (1987) ; Tokmakidis et al, (1998)]. Because LT in particular can be measured in light to moderate submaximal exercise, it has possibilities for safe and accurate evaluation, in older people.…”

Section: Introductionmentioning

confidence: 99%

Simple Assessment of Lactate Threshold by Means of the Bench Stepping in Older Population

Ayabe

Yahiro

Mori

et al. 2003

Int. J. Sport Health Sci.

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The purpose of this study was to develop a simple assessment of lactate threshold (LT) in older people. Two-hundreds and nine subjects, aged 65 to 90 years old, performed a bench stepping test by means of a 20 cm bench at 10 to 35 ascends per minute of the stepping rate. In 52 of 209 subjects, we determined the metabolic equivalents corresponding to exercise intensity of which lactate (LA) increased 0.1, 0.2, 0.3, 0.4, 0.5 and 1 mmol/l from baseline level, LA corresponding to the baseline level and 2 mmol/l (METs@LAr+0.1, METs@LAr+0.2, METs@LAr+0.3, METs@LAr+0.4, METs@LAr+0.5, METs@LAr+1, METs@LAr and METs@LA2), in addition to LT. We calucurated exercise intensity equivalent to fi xed LA levels by both a standard aseessment using a liner regression between exercise intensity (logexercise inetsnity) and LA (log-LA) ranged above LT, and a simple assessment using a liner regression between log-exercise inetsnity and log-LA ranged bellow and above 2 mmol/l of LA. Using the standard assessment, no signifi cant difference was confi rmed between METs@LAr+0.1 (4.7±0.8 METs) and LT (4.6±0.7 METs). In regard to METs corresponding to other LA, using the standard assessment, METs@LAr (4.5±0.8 METs) was signifi cantly lower (p<0.05), and the rest (4.8±0.8 -5.6±0.8 METs) were signifi cantly higher (p<0.01), compared with LT. There was no signifi cant difference between METs@LAr+0.1 determined using standard assessment and simple assessment (4.6±0.9 METs). Also METs@LAr+0.1 determined by the simple assessment had high correlation and good limit agreement with LT (r=0.900, p<0.001 and 0.0±0.8 METs), as well as METs@LAr+0.1 determined by the standard assessment (r=0.930, p<0.001 and 0.0±0.6 METs). In 90% of men and 92%of women, LA reached 2 mmol/l at an intensity of 20, 25 or 30 ascends/minute. The method of evaluating exercise intensity corresponding to 0.1 mmol/l above resting level of LA using a stepping rate of 15, 20, 25 and 30 ascends/minute on a 20 cm platform, taking LA of 2 mmol/l as the termination criteria, can be considered valid as a simple assessment of LT in older individuals.

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“…As lactate accumulation/removal ratio is considered a good marker of aerobic capacity [58,59], we subjected all mice at 4 months of age to a 28-minute constant load test (at 85% of the maximal speed reached during the incremental test) and measured the lactate accumulation in the bloodstream every 7 minutes (Figure 2(a)). WT mice displayed a typical lactate accumulation curve, increasing from baseline (0.09 ± 0.30 mmol/L) to a peak at the 14th minute of 2.87 ± 0.90 mmol/L, followed by a plateau.…”

Section: Aerobic Training Increased Functional Output Andmentioning

confidence: 99%

Aerobic Training Prevents Heat-Strokes in Calsequestrin 1 Knockout Mice by Reducing Oxidative Stress

Guarnier

Serano

Michelucci

et al. 2018

Biophysical Journal

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Calsequestrin-1 knockout (CASQ1-null) mice suffer lethal episodes when exposed to strenuous exercise and environmental heat, crises known as exertional/environmental heatstroke (EHS). We previously demonstrated that administration of exogenous antioxidants (N-acetylcysteine and trolox) reduces CASQ1-null mortality during exposure to heat. As aerobic training is known to boost endogenous antioxidant protection, we subjected CASQ1-null mice to treadmill running for 2 months at 60% of their maximal speed for 1 h, 5 times/week. When exposed to heat stress protocol (41°C/1 h), the mortality rate of CASQ1-null mice was significantly reduced compared to untrained animals (86% versus 16%). Protection from heatstrokes was accompanied by a reduced increase in core temperature during the stress protocol and by an increased threshold of response to caffeine of isolated extensor digitorum longus muscles during in vitro contracture test. At cellular and molecular levels, aerobic training (i) improved mitochondrial function while reducing their damage and (ii) lowered calpain activity and lipid peroxidation in membranes isolated from sarcoplasmic reticulum and mitochondria. Based on this evidence, we hypothesize that the protective effect of aerobic training is essentially mediated by a reduction in oxidative stress during exposure of CASQ1-null mice to adverse environmental conditions.

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Blood lactate parameters related to aerobic capacity and endurance performance

Cited by 153 publications

References 28 publications

Lactate threshold predicting time-trial performance: impact of heat and acclimation

Lactate threshold predicting time-trial performance: impact of heat and acclimation

Simple Assessment of Lactate Threshold by Means of the Bench Stepping in Older Population

Aerobic Training Prevents Heat-Strokes in Calsequestrin 1 Knockout Mice by Reducing Oxidative Stress

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