Wells J A, Smyth R J, Rebuck A S
Am Rev Respir Dis. 1986 Dec;134(6):1125-8. doi: 10.1164/arrd.1986.134.6.1125.
The present study was designed to assess differences in compartmental contributions to ventilation between cycle pedaling and treadmill walking. Eight subjects performed submaximal cycle (CE) and treadmill (TM) exercise. The mean maximal work loads were not significantly different between the 2 modes of exercise. Ventilation (VE), oxygen uptake (VO2), and respiratory inductance plethysmography (RIP) were measured continuously during both modes of exercise. During both TM and CE, VE measured by RIP was found to correlate significantly with VE measured by pneumotachometer. Although the ventilation/work load relationship for CE exceeded that for TM in all subjects, when changes in rib cage (RC) and abdominal (ABD) tidal volume responses were expressed relative to changes in VE, no significant differences were found between TM and CE (RC, p greater than 0.05; ABD, p greater than 0.05). When these changes in tidal volume were expressed relative to changes in work load and independent of ventilation, there were no significant differences between separate compartmental responses during TM or CE (RC, p greater than 0.05; ABD, p greater than 0.05). We conclude that while absolute degrees of ventilation at a given work load differ between cycling and walking, the postural and ventilatory differences between these forms of exercise do not appear to induce differences in the relative contributions of the rib cage or the abdomen to tidal breathing.
本研究旨在评估在蹬自行车和跑步机行走过程中，各腔室对通气的贡献差异。八名受试者进行了次最大强度的自行车运动（CE）和跑步机运动（TM）。两种运动模式下的平均最大工作负荷无显著差异。在两种运动模式期间，持续测量通气量（VE）、摄氧量（VO2）和呼吸感应体积描记法（RIP）。在TM和CE过程中，发现通过RIP测量的VE与通过呼吸流速仪测量的VE显著相关。尽管在所有受试者中，CE的通气量/工作负荷关系超过了TM，但当胸廓（RC）和腹部（ABD）潮气量反应的变化相对于VE的变化表示时，TM和CE之间未发现显著差异（RC，p>0.05；ABD，p>0.05）。当这些潮气量变化相对于工作负荷变化表示且与通气无关时，TM或CE期间各腔室单独反应之间无显著差异（RC，p>0.05；ABD，p>0.05）。我们得出结论，虽然在给定工作负荷下，骑自行车和行走时的绝对通气程度不同，但这些运动形式之间的姿势和通气差异似乎不会导致胸廓或腹部对潮式呼吸的相对贡献出现差异。
