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Participation in physical activity is associated with reduced nocturnal hypoxaemia in males

David Stevens, Sarah Appleton, Yohannes Melaku, Sean Martin, Robert Adams, Gary Wittert on behalf of the MAILES investigators
ERJ Open Research 2021 7: 00852-2020; DOI: 10.1183/23120541.00852-2020
David Stevens
1Sleep Health, Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
2Centre for Nutritional and Gastrointestinal Diseases, South Australian Health & Medical Research Institute, Adelaide, SA, Australia
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  • For correspondence: david.stevens@flinders.edu.au
Sarah Appleton
1Sleep Health, Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
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Yohannes Melaku
1Sleep Health, Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
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  • ORCID record for Yohannes Melaku
Sean Martin
3Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
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Robert Adams
1Sleep Health, Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA, Australia
4Respiratory and Sleep Services, Southern Adelaide Local Health Network, SA, Adelaide, Australia
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Gary Wittert
3Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
5Freemasons Centre for Male Health and Health and Wellbeing, The University of Adelaide, and the South Australian Health and Medical Research Institute, SA, Australia
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  • FIGURE 1
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    FIGURE 1

    Consort diagram showing number, and reasons, for exclusion from analysis. MAILES: Men Androgen Inflammation Lifestyle Environment and Stress; FAMAS: Florey Adelaide Men's Aging Study; NWAHS: North West Adelaide Health Study; OSA: obstructive sleep apnea; MVPA: moderate to vigorous physical activity.

  • FIGURE 2
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    FIGURE 2

    Cross-sectional associations between moderate to vigorous physical activity (MVPA) in 2010 and obstructive sleep apnea metrics. X-axis indicates log-transformed unstandardised β. Adjustments: age, body mass index, study group (Florey Adelaide Men's Aging Study versus North West Adelaide Health Study), income, serum testosterone, serum C-reactive protein, cardiovascular disease status, diabetes status, hypertension status, Missing data: MVPA difference: 36; income: 20; testosterone: 66; inflammation: 65; diabetes status: 12; cardiovascular disease status: 14; blood pressure: 26; mean O2 desaturation: 1. AHI: apnoea/hypopnoea index; REM: rapid eye movement; T90%: amount of sleep with oxygen saturation <90%.

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    FIGURE 3

    Cross-sectional associations between changes in moderate to vigorous physical activity (MVPA) from baseline (2002–2006) to 2010 (MVPA-Δ) and obstructive sleep apnea metrics. X-axis indicates log-transformed unstandardised β. Adjustments: age, body mass index, study group (Florey Adelaide Men's Aging Study versus North West Adelaide Health Study), income, serum testosterone, serum C-reactive protein, cardiovascular disease status, diabetes status, hypertension status Missing data: MVPA: 35; income: 20; testosterone: 66; inflammation: 65; diabetes status: 12; cardiovascular disease status: 14; blood pressure: 26; mean O2 desaturation: 1. AHI: apnoea/hypopnoea index; REM: rapid eye movement; T90%: amount of sleep with oxygen saturation <90%.

Tables

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  • TABLE 1

    Polysomnographic characteristics of study participants

    Age years60±17
    Body mass index kg·m−228.5±5.3
    AHI events·h−115.7±15.2
    REM AHI events·h−119.0±20.0
    Mean oxygen desaturation %4.2±1.0
    T90% %3.5±3.4
    Mean hypopnoea duration s23.2±6.0
    Mean apnoea duration s21.3±8.2
    MVPA-2010 h4.5±5.6
    MVPA-Δ h0.3±4.3

    Data are presented as median±interquartile range. AHI: apnoea/hypopnoea index; REM: rapid eye movement; T90%: amount of sleep with oxygen saturation <90%; MVPA: moderate to vigorous physical activity; MVPA-2010: time spent undertaking MVPA during 2010 collection; MVPA-Δ: change in time spent undertaking MVPA from baseline (2002–2006) to 2010.

    • TABLE 2

      Percentage change in obstructive sleep apnoea (OSA) metrics for each hour increase in MVPA-2010 and MVPA-Δ

      OSA indexMVPA-2010MVPA-Δ
      AHI events·h−1−0.5−0.6
      REM AHI events·h−1−0.1−0.1
      Mean oxygen desaturation %−0.2#−0.3#
      T90% %−2.0#−1.5#
      Mean hypopnoea duration s−0.06−0.1
      Mean apnoea duration s−0.14−0.35#

      MVPA-2010: time spent undertaking moderate to vigorous physical activity (MVPA) during 2010 collection; MVPA-Δ: change in time spent undertaking MVPA from baseline (2002–2006) to 2010; AHI: apnoea/hypopnoea index; REM: rapid eye movement; T90%: amount of sleep with oxygen saturation <90%. #: significant association.

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        Supplementary material 00852-2020.supplement

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      Vol 7 Issue 2 Table of Contents
      ERJ Open Research: 7 (2)
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      Participation in physical activity is associated with reduced nocturnal hypoxaemia in males
      David Stevens, Sarah Appleton, Yohannes Melaku, Sean Martin, Robert Adams, Gary Wittert
      ERJ Open Research Apr 2021, 7 (2) 00852-2020; DOI: 10.1183/23120541.00852-2020

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      Participation in physical activity is associated with reduced nocturnal hypoxaemia in males
      David Stevens, Sarah Appleton, Yohannes Melaku, Sean Martin, Robert Adams, Gary Wittert
      ERJ Open Research Apr 2021, 7 (2) 00852-2020; DOI: 10.1183/23120541.00852-2020
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