Evidence map›Paper›PMID 15039259›Full record

ArticleBritish journal of sports medicine2004

Reliability and validity of measures taken during the Chester step test to predict aerobic power and to prescribe aerobic exercise.

J P Buckley, J Sim, R G Eston, R Hession, R Fox

3 registry-linked trialsAbstract readValidation Study
PubMed Full text at PMC Publisher
In one paragraph

Article in British journal of sports medicine, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 78 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 3 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.

NCT00689793 phase4completednot on this mapstarted 2008, after this paper: background citation

Clinical Evaluation of Iron Treatment Efficiency Among Non-anemic But Iron-deficient Female Blood Donors : a Randomized Controlled Trial

TypeinterventionalSponsorUniversity of LausanneRan2008 to 2011Enrolled154ConditionsFatigue, Iron DeficiencyArmsFerrous sulphate, Placebo
NCT02717650 nacompletednot on this mapstarted 2016, after this paper: background citation

Development; Feasibility/Safety and Validation of the Alfred Step Test Exercise Protocol (A-STEP) Developed for Adults With Cystic Fibrosis:

TypeinterventionalSponsorThe AlfredRan2016 to 2024Enrolled7ConditionsCystic Fibrosis, Fibrosis, Lung Diseases, Respiratory DiseasesArmsA-STEP, A-STEP (New Protocol), Comparator: CPET cycle ergometer (Gold Standard)
NCT04231838 naunknown statusnot on this mapstarted 2021, after this paper: background citation

A Randomised Controlled International Multicentre Study Evaluating Changes in Metabolic Syndrome in Smokers With Type 2 Diabetes Mellitus After Switching From Tobacco Cigarettes to Combustion-Free Nicotine Delivery Systems: DIASMOKE Study

TypeinterventionalSponsorEclat Srl.Ran2021 to 2026Enrolled576ConditionsCardiovascular Risk Factor, Diabetes Mellitus, Type 2ArmsTOBACCO CIGARETTES, COMBUSTION-FREE NICOTINE DELIVERY SYSTEMS (C-F NDS)
3 · Its place in the literature

Who cites it

78 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

J P BuckleyKeele University, Stoke, UK. j.p.buckley@keele.ac.jp
J Sim
R G Eston
R Hession
R Fox

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the reliability and validity of measures taken during the Chester step test (CST) used to predict VO(2)max and prescribe subsequent exercise.

methodsThe CST was performed twice on separate days by 7 males and 6 females aged 22.4 (SD 4.6) years. Heart rate (HR), ratings of perceived exertion (RPE), and oxygen uptake (VO(2)) were measured at each stage of the CST.

resultsRPE, HR, and actual VO(2) were the same at each stage for both trials but each of these measures was significantly different between CST stages (p<0.0005). Intertrial bias +/-95% limits of agreement (95% LoA) of HR reached acceptable limits at CST stage IV (-2+/-10 beats/min) and for RPE at stages III (0.2+/-1.4) and IV (0.5+/-1.9). Age estimated HRmax significantly overestimated actual HRmax of 5 beats/min (p = 0.016) and the 95% LoA showed that this error could range from an underestimation of 17 beats/min to an overestimation of 7 beats/min. Estimated versus actual VO(2) at each CST stage during both trials showed errors ranging between 11% and 19%. Trial 1 underestimated actual VO(2)max by 2.8 ml/kg/min (p = 0.006) and trial 2 by 1.6 ml/kg/min (not significant). The intertrial agreement in predicted VO(2)max was relatively narrow with a bias +/-95% LoA of -0.8+/-3.7 ml/kg/min. The RPE and %HRmax (actual) correlation improved with a second trial. At all CST stages in trial 2 RPE:%HRmax coefficients were significant with the highest correlations at CST stages III (r = 0.78) and IV (r = 0.84).

conclusionCST VO(2)max prediction validity is questioned but the CST is reliable on a test-retest basis. VO(2)max prediction error is due more to VO(2) estimation error at each CST stage compared with error in age estimated HRmax. The HR/RPE relation at >50% VO(2)max reliably represents the recommended intensity for developing cardiorespiratory fitness, but only when a practice trial of the CST is first performed.

Indexed as

AdultAnthropometryExerciseExercise TestFemaleHeart RateHumansMaleOxygen ConsumptionPhysical ExertionPhysical FitnessReproducibility of Results

Identifiers

PMID15039259
PMCPMC1724781

What OpenQuestion holds

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Registered trials

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.