Student or educator? Sign up with your school email and get 6 months of Pro free.
CoChat
Sign Up
Cited by 286

The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.

The six-minute walk test and body weight-walk distance product in healthy Brazilian subjects

Open access
Iwama, A.M., Andrade, G.N., Shima, P., Tanni, S.E., Godoy, I., Dourado, V.Z.·2009·Brazilian Journal of Medical and Biological Research
DOI 10.1590/s0100-879x2009005000032
Open this paper in CoChat — free account

Abstract

We assessed the 6-min walk distance (6MWD) and body weight x distance product (6MWw) in healthy Brazilian subjects and compared measured 6MWD with values predicted in five reference equations developed for other populations. Anthropometry, spirometry, reported physical activity, and two walk tests in a 30-m corridor were evaluated in 134 subjects (73 females, 13-84 years). Mean 6MWD and 6MWw were significantly greater in males than in females (622 +/- 80 m, 46,322 +/- 10,539 kg.m vs 551 +/- 71 m, 36,356 +/- 8,289 kg.m, P < 0.05). Four equations significantly overestimated measured 6MWD (range, 32 +/- 71 to 137 +/- 74 m; P < 0.001), and one significantly underestimated it (-36 +/- 86 m; P < 0.001). 6MWD significantly correlated with age (r = -0.39), height (r = 0.44), body mass index (r = -0.24), and reported physical activity (r = 0.25). 6MWw significantly correlated with age (r = -0.21), height (r = 0.66) and reported physical activity (r = 0.25). The reference equation devised for walk distance was 6MWDm = 622.461 - (1.846 x Ageyears) + (61.503 x Gendermales = 1; females = 0); r2 = 0.300. In an additional group of 85 subjects prospectively studied, the difference between measured and the 6MWD predicted with the equation proposed here was not significant (-3 +/- 68 m; P = 0.938). The measured 6MWD represented 99.6 +/- 11.9% of the predicted value. We conclude that 6MWD and 6MWw variances were adequately explained by demographic and anthropometric attributes. This reference equation is probably most appropriate for evaluating the exercise capacity of Brazilian patients with chronic diseases.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1590/s0100-879x2009005000032

Cites

29 of 29 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 29 references

Cited by

See all 286

Metadata

Authors
Iwama, A. M., Andrade, G. N., Shima, P., Tanni, S. E., Godoy, I., & Dourado, V. Z.
Venue
Brazilian Journal of Medical and Biological Research
Publisher
FapUNIFESP (SciELO)
Published
2009-10-02
Volume
42
Issue
11
Pages
1080-1085
ISSN
  • 0100-879X (ISSN-L)
  • 1414-431X
DOI
10.1590/s0100-879x2009005000032
OpenAlex
W2098062494
Cited by
286
References
29
FWCI
30.32
Type
journal article
Language
en
Open access
gold

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: The six-minute walk test and body weight-walk distance product in healthy Brazilian subjects. https://app.cochat.ai/papers/10.1590/s0100-879x2009005000032
The paper
Iwama, A. M., Andrade, G. N., Shima, P., Tanni, S. E., Godoy, I., & Dourado, V. Z. (2009). The six-minute walk test and body weight-walk distance product in healthy Brazilian subjects. Brazilian Journal of Medical and Biological Research. https://doi.org/10.1590/s0100-879x2009005000032

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.