Biomechanics and regulation of external respiration under conditions of five-day dry immersion

Biomechanics and regulation of external respiration under conditions of five-day dry immersion Full article

Journal

Human Physiology
ISSN: 1608-3164 , E-ISSN: 0362-1197

Output data

Year: 2013, Volume: 39, Number: 7, Pages: 767-771 Pages count : 5 DOI: 10.1134/S0362119713070153

Authors

Popova Y.A. ¹ , Suvorov A.V. ¹ , D'yachenko A.I. ^1,2 , Kolesnikov V.I. ¹

Affiliations

1	Institute of Biomedical Problems, Russian Academy of Sciences
2	Prokhorov Institute of General Physics, Russian Academy of Sciences

The functional state of external respiration and the features of its regulation in healthy persons were studied under conditions of microgravity simulated using dry immersion. The lung volume, the ratio of thoracic and abdominal components during quiet breathing and performing various respiratory maneuvers, as well as the parameters that characterize the regulation of breathing (the duration of breath holding and the ability to voluntarily control respiratory movements), were recorded during the baseline period, on days 2 and 4 of dry immersion, and after the end of the dry immersion. It has been shown that the breathing pattern did not significantly change under conditions of dry immersion compared to the baseline period; however, the inspiratory reserve volume increased (p < 0.05), while the expiratory reserve volume decreased (p < 0.01). Dry immersion did not alter pulmonary ventilation, yet most of the subjects trended toward an increase in the contribution of the abdominal component of breathing movements during quiet breathing and demonstrated a statistically significant increase in this parameter during the lung vital capacity maneuver. The durations of the inspiratory and expiratory maximal breath holding under conditions of immersion did not differ from the background values. During the immersion, the accuracy of voluntary control of breathing increased. We believe that immersion, similar to microgravity, leads to changes in the reserve lung volume, which are partly because of changes in the body position; changes in relative contributions of the thoracic and abdominal components in the breathing movements; and changes in voluntary breath regulation.

Popova Y.A. , Suvorov A.V. , D'yachenko A.I. , Kolesnikov V.I.
Biomechanics and regulation of external respiration under conditions of five-day dry immersion
Human Physiology. 2013. V.39. N7. P.767-771. DOI: 10.1134/S0362119713070153 OpenAlex

Попова Ю.А. , Суворов А.В. , Дьяченко А.И. , Колесников В.И.
Биомеханика и регуляция внешнего дыхания в условиях 5-суточной иммерсии
Авиакосмическая и экологическая медицина. 2011. Т.45. №6. С.26-31.

OpenAlex:

W2073640151

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