Blood lactate accumulation in intermittent supramaximal exercise

Rieu, Michel; Duvallet, Alain; Scharapan, L.; Thieulart, L.; Ferry, Arnaud

doi:10.1007/bf00640669

Cited by 20 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Experiments in vitro using frog sartorious muscle have shown that extracellular pH and bicarbonate concentration can influence lactate and H + efflux from the muscle, and are also related to tension recovery (Mainwood and Worsley-Brown, 1975 Renaud 1989). Furthermore, Rieu et al (1988) also observed a decrease in 'delta' lactate values when blood lactate concentration was increased by repeated 45 s treadmill runs at 175% VO 2 max. Similar findings were reported by McCartney et al (1986) and Spriet et al (1989).…”

Section: Discussionmentioning

confidence: 84%

Effects of previous dynamic arm exercise on power output during repeated maximal sprint cycling

Bogdanis

Nevill

Lakomy

1994

Journal of Sports Sciences

View full text Add to dashboard Cite

This study examined the effects of elevating blood lactate concentration by arm exercise on subsequent performance during repeated 30 s sprints with the legs. Eight male students performed two 30 s cycle ergometer sprints separated by 6 min of recovery, on two occasions. On one occasion the subjects performed only the two 30 s cycle ergometer sprints ('legs'), while on the other occasion 5 min of heavy arm cranking preceded the two sprints ('arms and legs'). Blood lactate concentration was determined from capillary samples at rest, after a standardized warm-up and 3 and 5 min following each exercise bout. In the 'legs' condition, the peak power output (PPO) and mean power output (MPO) in the second sprint were 92% (P < 0.05) and 85% (P < 0.01) of the values attained during the first sprint, respectively. Prior arm exercise, which increased blood lactate to 11.0 +/- 0.6 mM, had no effect on PPO and MPO during the first cycle ergometer sprint (approximately 4% drop, N.S.). However, in the second sprint after prior arm exercise, PPO was 10% lower than the PPO attained during the corresponding sprint in the 'legs' condition (sprint 2 'arms and legs' 963 +/- 42 W, sprint 2 'legs' 1074 +/- 60 W, P < 0.05), while MPO was better maintained (sprint 2 'arms and legs' 517 +/- 17 W, sprint 2 'legs' 549 +/- 24 W, N.S.). The rate of blood lactate accumulation after both cycle ergometer sprints was considerably decreased (by approximately 50%) when blood lactate levels were pre-elevated by arm crank exercise.(ABSTRACT TRUNCATED AT 250 WORDS)

show abstract

Section: Discussionmentioning

confidence: 84%

Effects of previous dynamic arm exercise on power output during repeated maximal sprint cycling

Bogdanis

Nevill

Lakomy

1994

Journal of Sports Sciences

View full text Add to dashboard Cite

show abstract

“…It appears that the dissociation between the recovery oxygen consumption and the accumulation and fate of lactate, along with the influence of a number of factors that stimulate mitochondrial respiration after exercise, undermine its use. [19,20] This discredits the traditional concept of paying back a debt that was incurred during exercise by restoring anaerobic stores. Factors known to elevate oxygen consumption during recovery that are not directly related to anaerobic energy release during exercise include an elevation in temperature, increases in hormonal activity and the general elevated energy needs associated with a return to homeostasis.…”

Section: Methods Used To Evaluate Energy Releasementioning

confidence: 99%

Energy System Interaction and Relative Contribution During Maximal Exercise

Gastin¹

2001

Sports Medicine

714

517

View full text Add to dashboard Cite

“…The use of oxygen debt as a measure of the anaerobic capcity, however, has been discredited by several authors (6, 30, 40). Hermansen (6) suggested that the influence of several factors affecting the resting oxygen uptake was the cause of a lack of confidence in the method, but it appears that the dissociation between the recovery oxygen consumption and the accumulation and fate of lactate, along with the influence of a number of factors which stimulate mitochondrial respiration after exercise, undermine its potential use (57,69). It has been found that the preferential fate of lactate is as a substrate for oxidation and not glycogen resynthesis (57, 70) and it therefore does not represent extra oxygen consumption, as lactate merely replaces other substrates in oxidation.…”

Section: Oxygen Debtmentioning

confidence: 99%

Quantification of anaerobic capacity

Gastin

1994

Scandinavian Med Sci Sports

View full text Add to dashboard Cite

Review ar tideQuantification of anaerobic capacitv Gastin PB. Quantification of anaerobic capacity. Scand J Med Sci Sports 1994: 4: 91-112. 0 Munksgaard, 1994 Anaerobic capacity may be defined as the maximal amount of ATP formed by the anaerobic processes during a single bout of maximal exercise. While several methods have been presented to measure a person's anaerobic capacity, none have become universally accepted. The muscle biopsy technique provides information on the anaerobic energy release from direct measures of ATP and CP breakdown and muscle lactate concentrations. As a practical measure of anaerobic capacity, the method may be limited, as it is an invasive, skilled technique. Furthermore, it has the limitation of measuring relative changes in concentrations, not amounts, such that the anaerobic contribution is estimated from estimates of the active muscle mass involvement. Measurement of lactate in blood after exhaustive exercise has frequently been used, but several factors suggest that, while it provides an indication of the extent of anaerobic glycolysis, it cannot be used as a quantitative measure of the anaerobic energy yield. The mean power during an all-out effort on a bicycle ergometer has also been assumed to be a measure of anaerobic capacity, yet it provides only an indication of the ability to maintain high power outputs. Concerns over the duration of the test, the protocol and type of ergometer used and the contribution of the aerobic energy system to the energy supply also limit its validity as a measure of anaerobic capacity. The oxygen debt, defined as the recovery oxygen uptake above resting metabolic rates, has been discredited as a valid and reliable measure of the anaerobic capacity, as it is generally acknowledged that mechanisms other than the metabolism of lactate also contribute to the post-exercise oxygen uptake. The recent work of M e d b~ et al. in re-examining the issue of oxygen deficit has created considerable interest in its use as a measure of anaerobic capacity. The measurement of oxygen deficit directly depends on the accurate assessment of the energy cost of the work completed. This is not difficult during submaximal exercise, as the steady-state oxygen uptake represents the energy costs. During exhaustive supramaximal exercise, the validity of the maximal accumulated oxygen deficit as a measure of the anaerobic capacity has been questioned, as the energy cost is estimated and not measured, either by assuming a given mechanical efficiency or by extrapolating the submaximal relationship between work intensity and oxygen uptake to supramaximal levels. Despite these theoretical objections, the maximal accumuiated oxygen deficit method remains a promising measure of the anaerobic capacity, as it provides a non-invasive means of quantifying the anaerobic energy release during exhaustive exercise.The energy required for muscle contraction comes from the splitting of adenosine triphosphate (ATP).As ATP stores in the muscle are limited, well regulated chemical pathways exi...

show abstract

Blood lactate accumulation in intermittent supramaximal exercise

Cited by 20 publications

References 28 publications

Effects of previous dynamic arm exercise on power output during repeated maximal sprint cycling

Effects of previous dynamic arm exercise on power output during repeated maximal sprint cycling

Energy System Interaction and Relative Contribution During Maximal Exercise

Quantification of anaerobic capacity

Contact Info

Product

Resources

About