Evidence map›Paper›PMID 31124324›Full record

ReviewPhysiological reports2019

The maximal metabolic steady state: redefining the 'gold standard'.

Andrew M Jones, Mark Burnley, Matthew I Black, David C Poole, Anni Vanhatalo

Abstract readReview
PubMed Full text at PMC Publisher
In one paragraph

Review in Physiological reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
133citing papers in PubMed, 7 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

133 citing papers in PubMed, 7 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Trial
  9. Trial
  10. Trial
  11. Trial
  12. Trial
  13. Effect of low- and high-carbohydrate diets on swimming economy: a crossover study.Journal of the International Society of Sports Nutrition · 2020
    Trial
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

73 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Andrew M JonesSport and Health Sciences, University of Exeter, St. Luke's Campus, Exeter, United Kingdom.
Mark BurnleySchool of Sport and Exercise Sciences, University of Kent, Medway, United Kingdom.
Matthew I BlackSport and Health Sciences, University of Exeter, St. Luke's Campus, Exeter, United Kingdom.
David C PooleDepartment of Kinesiology, Kansas State University, Manhattan, Kansas.
Anni VanhataloSport and Health Sciences, University of Exeter, St. Luke's Campus, Exeter, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The maximal lactate steady state (MLSS) and the critical power (CP) are two widely used indices of the highest oxidative metabolic rate that can be sustained during continuous exercise and are often considered to be synonymous. However, while perhaps having similarities in principle, methodological differences in the assessment of these parameters typically result in MLSS occurring at a somewhat lower power output or running speed and exercise at CP being sustainable for no more than approximately 20-30 min. This has led to the view that CP overestimates the 'actual' maximal metabolic steady state and that MLSS should be considered the 'gold standard' metric for the evaluation of endurance exercise capacity. In this article we will present evidence consistent with the contrary conclusion: i.e., that (1) as presently defined, MLSS naturally underestimates the actual maximal metabolic steady state; and (2) CP alone represents the boundary between discrete exercise intensity domains within which the dynamic cardiorespiratory and muscle metabolic responses to exercise differ profoundly. While both MLSS and CP may have relevance for athletic training and performance, we urge that the distinction between the two concepts/metrics be better appreciated and that comparisons between MLSS and CP, undertaken in the mistaken belief that they are theoretically synonymous, is discontinued. CP represents the genuine boundary separating exercise in which physiological homeostasis can be maintained from exercise in which it cannot, and should be considered the gold standard when the goal is to determine the maximal metabolic steady state.

Indexed as

Energy MetabolismModels, BiologicalMuscle ContractionMuscle StrengthAnimalsHumansLactic AcidMuscle FatigueMuscle, SkeletalOxidation-ReductionTerminology as TopicTime FactorsLactic AcidFatiguemetabolismperformance

Identifiers

PMID31124324
PMCPMC6533178

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.