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Record W1964000264 · doi:10.1056/nejm200008313430907

Exercise Limitation in Health and Disease

2000· review· en· W1964000264 on OpenAlexaff
Norman L. Jones, Kieran J. Killian

Bibliographic record

VenueNew England Journal of Medicine · 2000
Typereview
Languageen
FieldMedicine
TopicCardiovascular and exercise physiology
Canadian institutionsMcMaster UniversityHamilton Health SciencesMcMaster University Medical Centre
Fundersnot available
KeywordsMedicineVO2 maxPhysical therapyOxygen deliveryPhysical exercisePhysical medicine and rehabilitationOxygenCardiologyInternal medicineHeart rateBlood pressure

Abstract

fetched live from OpenAlex

Classic studies of the factors that limit exercise revealed that exercise capacity is reduced at high altitudes1 and in persons with cardiopulmonary disorders.2 Because animal muscle deprived of oxygen rapidly fatigues and produces lactic acid,3 these findings suggested that inadequate oxygen delivery limits exercise. Maximal oxygen consumption (V̇O2max) became the primary measure of exercise capacity, and mechanisms related to the delivery of oxygen to the muscles were considered the main factors determining exercise capacity. These principles dominate the conventional interpretation of clinical exercise tests.4,5 PhysiologyNormal Exercise PerformanceExercise can be categorized as follows: short-term maximal exercise, . . .

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: none
GenreCandidate signal: Review · Consensus signal: Review
Teacher disagreement score0.006
Threshold uncertainty score0.021

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0020.000
Bibliometrics0.0030.003
Science and technology studies0.0010.001
Scholarly communication0.0020.002
Open science0.0010.001
Research integrity0.0020.002
Insufficient payload (model declined to judge)0.0060.003

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.044
GPT teacher head0.347
Teacher spread0.303 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreReview

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations221
Published2000
Admission routes1
Has abstractyes

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