Influence of water immersion on the airway impedance measured by forced oscillation technique

Hoshi, Daisuke; Fukuie, Marina; Tamai, Shinsuke; Momma, Reiko; Tarumi, Takashi; Sugawara, Jun; Watanabe, Koichi

doi:10.1016/j.resp.2021.103779

Cited by 2 publications

(2 citation statements)

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“…In a previous study, the reduction of tidal volume occurred with higher intensity exercise (approximately 80% VO 2peak ) (Sheldahl et al, 1987 ). In addition, a previous study reported that water immersion decreased vital capacity by about 100–200 ml (de Andrade et al, 2014 ; Hoshi et al, 2021 ). However, tidal volume during moderate WC in this study was about 1250 ml, and hydrostatic pressure may not have much effect on this volume.…”

Section: Discussionmentioning

confidence: 94%

“…Elevated hydrostatic pressure places an extra load on the respiratory system and increases the work of breathing. This consequently may cause respiratory muscle fatigue (Bréchat et al, 2013 ; Hoshi et al, 2021 ; Pendergast et al, 2015 ). However, the decreased spirometry values observed in our study may not only reflect respiratory muscle fatigue.…”

Section: Discussionmentioning

confidence: 99%

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Respiratory function and breathing response to water‐ and land‐based cycling at the matched oxygen uptake

Hoshi

Fukuie

Hashitomi

et al. 2022

Physiological Reports

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The impact of underwater exercise on respiratory function remains unclear when its metabolic rate is matched with exercise performed on land. Therefore, we compared the breathing responses and respiratory function during and after water (WC)-and land (LC)-based cycling performed at the matched oxygen uptake (VO 2 ). Twelve healthy men performed 15 min of incremental WC and LC on separate days. During WC, participants cycled continuously at 30, 45, and 60 rpm (stages 1, 2, and 3) for 5 min each. During LC, participants cycled at 60 rpm for 15 min while wattage was increased every 5 min and adjusted to match VO 2 to the WC condition. Breathing patterns during cycling and spirometry data before and after cycling were collected. VO 2 during WC and LC was similar. Respiratory rate (WC: 27 ± 3 vs. LC: 23 ± 4 bpm, p = 0.012) and inspiratory flow (WC: 1233 ± 173 vs. LC: 1133 ± 200 ml/s, p = 0.035) were higher and inspiratory time (WC: 1.0 ± 0.1 vs. LC: 1.2 ± 0.2 s, p = 0.025) was shorter at stage 3 during WC than LC. After WC, forced vital capacity (p = 0.010) significantly decreased while no change was observed after LC. These results suggest that at similar metabolic rates during WC and LC, breathing is slightly shallower during WC which may have chronic effects on respiratory muscle function after multiple bouts of aquatic cycling.Underwater exercise may be beneficial for respiratory muscle rehabilitation when performed on a chronic basis.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Respiratory function and breathing response to water‐ and land‐based cycling at the matched oxygen uptake

Hoshi

Fukuie

Hashitomi

et al. 2022

Physiological Reports

Self Cite

View full text Add to dashboard Cite

show abstract

Changes in Respiratory Muscle Pressure of Healthy Individuals with Different Levels of Immersion in Water: Observational Study

GÜRPINAR,

ÖZYÜREK,

ELVAN

et al. 2023

Journal of Basic and Clinical Health Sciences

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Introduction Understanding the physiological effects of immersion, particularly on pulmonary dynamics in healthy individuals is important to predict and interpret the physiological responds in unhealthy group. The aim of our study is to evaluate the inspiratory and expiratory muscle strength and cough strength in healthy individuals during water immersion at different water depths. Methods A cross-sectional study was conducted in 24 healthy individuals with the mean age 20.0 years. Respiratory muscle strength test and cough force were tested on dry land and in pool at iliac crests, xiphoid appendix of the sternum and clavicles levels. Measurements were randomized at each level. The Friedman test was used for repeated measures with Wilcoxon signed ranks test with Bonferroni correction was applies to compare the variables. Results A significant difference between dry land and immersion in water of different levels for MEP (p=0.001) and PEF (p= 0.015). multiple comparisons showed no difference between levels in PEF (p

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Influence of water immersion on the airway impedance measured by forced oscillation technique

Cited by 2 publications

References 19 publications

Respiratory function and breathing response to water‐ and land‐based cycling at the matched oxygen uptake

Respiratory function and breathing response to water‐ and land‐based cycling at the matched oxygen uptake

Changes in Respiratory Muscle Pressure of Healthy Individuals with Different Levels of Immersion in Water: Observational Study

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