Download PDFPDF
Associations of cardiorespiratory fitness and body mass index with incident restrictive spirometry pattern
Compose Response

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Author Information
First or given name, e.g. 'Peter'.
Your last, or family, name, e.g. 'MacMoody'.
Your email address, e.g.
Your role and/or occupation, e.g. 'Orthopedic Surgeon'.
Your organization or institution (if applicable), e.g. 'Royal Free Hospital'.
Statement of Competing Interests


  • A rapid response is a moderated but not peer reviewed online response to a published article in a BMJ journal; it will not receive a DOI and will not be indexed unless it is also republished as a Letter, Correspondence or as other content. Find out more about rapid responses.
  • We intend to post all responses which are approved by the Editor, within 14 days (BMJ Journals) or 24 hours (The BMJ), however timeframes cannot be guaranteed. Responses must comply with our requirements and should contribute substantially to the topic, but it is at our absolute discretion whether we publish a response, and we reserve the right to edit or remove responses before and after publication and also republish some or all in other BMJ publications, including third party local editions in other countries and languages
  • Our requirements are stated in our rapid response terms and conditions and must be read. These include ensuring that: i) you do not include any illustrative content including tables and graphs, ii) you do not include any information that includes specifics about any patients,iii) you do not include any original data, unless it has already been published in a peer reviewed journal and you have included a reference, iv) your response is lawful, not defamatory, original and accurate, v) you declare any competing interests, vi) you understand that your name and other personal details set out in our rapid response terms and conditions will be published with any responses we publish and vii) you understand that once a response is published, we may continue to publish your response and/or edit or remove it in the future.
  • By submitting this rapid response you are agreeing to our terms and conditions for rapid responses and understand that your personal data will be processed in accordance with those terms and our privacy notice.
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Vertical Tabs

Other responses

  • Published on:
    How to interpret spirometry data in 2023? The new criteria to retain the diagnosis of ventilatory impairments
    • Helmi BEN SAAD, Professor of physiology and functional exploration. University of Sousse, Farhat HACHED Hospital, Heart Failure (LR12SP09) Research Laboratory, Sousse, Tunisia

    I read with interest the Saavedra et al.’s study1 aiming to evaluate the associations of cardiorespiratory fitness and body-mass-index with incident restrictive-ventilatory-impairment (RVI). The study’ rational is interesting since the RVI is frequent (eg; prevalence: 3 to 50%).2 One strong point of the aforementioned study1 was the use of the 2012 global-lung-function-initiative (GLI) task force of multi-ethnic norms for spirometry (GLI-2012).3 Saavedra et al.1 retained the diagnosis of a RVI in front of the combination of a low forced-vital-capacity (FVC) (ie; FVC < lower-limit-of-normal (LLN)) and a normal ratio between forced-expiratory-volume-in-one-second (FEV1) and FVC (ie; FEV1/FVC ≥ LLN). Saavedra et al.1 followed some “old” approaches. In 2022, the European-respiratory-society and the American-thoracic-society (ERS/ATS) published a “new” technical standard on interpretive strategies for lung function tests.4 This guidelines should be considered by researchers in the field of sports medicine.4 The definition applied by Saavedra et al.1 to retain the diagnosis of a RVI is questionable, and the following two points need to be clarified: i) what is a low spirometric data?, ii) what is a RVI?
    What is a low spirometric data?
    Interpretation of spirometric data necessitates 2 steps: i) comparison of the spirometric data with these of reference.4 5 , and ii) comparison of the data’ value with the distinctive thresholds of the main ventilatory-impairment not...

    Show More
    Conflict of Interest:
    None declared.