Decker Szonja, Horváth Tamás, Takács Johanna, Koller Akos
Research Center for Sports Physiology, Hungarian University of Sports Science, 1123 Budapest, Hungary.
Department of Morphology & Physiology, Faculty of Health Sciences, Semmelweis University, 1088 Budapest, Hungary.
J Clin Med. 2024 Dec 21;13(24):7825. doi: 10.3390/jcm13247825.
: The COVID-19 pandemic highlighted that body positions substantially affected the mortality rate. We hypothesized that body position modulates the contribution of abdominal (AB) and thoracic breathing (TB) to the breathing cycle (BC), as well as respiratory rate (RR). In addition, we hypothesized that physical activity level can increase the contribution of abdominal breathing. : Thus, we used plethysmography respiratory belts to measure changes in abdominal (AB) and thoracic (TB) circumferences, their ratio (AB/TB), and respiratory rate (RR) under resting conditions. Measurements were taken in four body positions-standing (St), sitting (Si), supine (Su), and prone (Pr)-for two groups of young adults (aged 21 ± 2 years) with different physical activity levels (low and high PA). : The AB/TB ratios significantly differed between the body positions (Si: 45.5/54.5%, St: 40.5/59.5%, Su: 56.8/43.2%, Pr: 52.2/47.8% ( < 0.001)). AB was significantly the highest in Su and lowest in Si and St ( < 0.001). There was a significant difference in respiratory rate (RR) between the four body positions ( = 0.005). RR in the four body positions was the following: Si: 15.1, St: 15.0, Su: 13.7, and Pr: 14.4. RR was the lowest in Su (13.7), where AB was the highest (56.8%), and RR was the highest in Si (15.1) and St (15.0), where TB was higher compared to Su ( < 0.001). PA significantly affected the various body positions' AB/TB ratio and RR. The high PA group showed a significant difference in the AB/TB ratio between the body positions ( < 0.001). The low PA group showed a significant difference in RR between the body positions ( = 0.025). : In young, healthy adults, we found that body position significantly influenced the abdominal/thoracic breathing ratio during the breathing cycle. The supine position showed the highest contribution of abdominal breathing, which correlated with the lowest respiratory rate. Additionally, a higher level of physical activity increased the contribution of abdominal breathing in the Si, Su, and St positions, suggesting a more energy-efficient breathing pattern. These findings suggest the potentials for breathing pattern monitoring and position-based interventions to improve healthcare outcomes and enhance sports performance and recovery.
新冠疫情凸显出身体姿势对死亡率有重大影响。我们推测，身体姿势会调节腹部呼吸（AB）和胸部呼吸（TB）对呼吸周期（BC）的贡献以及呼吸频率（RR）。此外，我们推测身体活动水平会增加腹部呼吸的贡献。因此，我们使用体积描记呼吸带测量两组不同身体活动水平（低PA和高PA）的年轻成年人（21±2岁）在静息状态下腹部（AB）和胸部（TB）周长的变化、它们的比例（AB/TB）以及呼吸频率（RR）。测量在四种身体姿势下进行，即站立（St）、坐着（Si）、仰卧（Su）和俯卧（Pr）。身体姿势之间的AB/TB比例存在显著差异（Si：45.5/54.5%，St：40.5/59.5%，Su：56.8/43.2%，Pr：52.2/47.8%（<0.001））。腹部周长在仰卧位时显著最高，在坐位和站立位时最低（<0.001）。四种身体姿势之间的呼吸频率（RR）存在显著差异（=0.005）。四种身体姿势下的RR如下：Si：15.1，St：15.0，Su：13.7，Pr：14.4。RR在仰卧位时最低（13.7），此时腹部周长最高（56.8%），RR在坐位（15.1）和站立位（15.0）时最高，此时胸部呼吸比仰卧位时更高（<0.001）。身体活动水平显著影响不同身体姿势下的AB/TB比例和RR。高PA组身体姿势之间的AB/TB比例存在显著差异（<0.001）。低PA组身体姿势之间的RR存在显著差异（=0.025）。在年轻健康的成年人中，我们发现身体姿势在呼吸周期中显著影响腹部/胸部呼吸比例。仰卧位时腹部呼吸的贡献最高，这与最低的呼吸频率相关。此外，较高的身体活动水平增加了坐位、仰卧位和站立位时腹部呼吸的贡献，表明呼吸模式更节能。这些发现表明呼吸模式监测和基于姿势的干预在改善医疗保健结果、提高运动表现和促进恢复方面具有潜力。
