RELATIONSHIP OF SUBJECTIVE TOLERANCE OF RESPIRATOR LOADS TO PHYSIOLOGIC EFFECTS AND PSYCHOPHYSICAL LOAD SENSITIVITY
RELATIONSHIP OF SUBJECTIVE TOLERANCE OF RESPIRATOR LOADS TO PHYSIOLOGIC EFFECTS AND PSYCHOPHYSICAL LOAD SENSITIVITY
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DOI：
10.1097/00043764-198908000-00014
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发表时间：
1989-08-01
影响因子：
3.2
通讯作者：
LOISIDES, P
中科院分区：
文献类型：
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作者：
HARBER, P;SHIMOZAKI, S;LOISIDES, P
在这项研究中，呼吸机负荷的主观耐受性与生理效应和心理物理负荷敏感性相关的程度进行了研究。52名正常志愿者在跑步机上行走，同时通过各种呼吸器类型的阻力和死腔负荷进行呼吸。视觉模拟量表测量知觉的运动时间限制和不适都与负荷所施加的解释性工作有关。呼吸时间与不适有关，但与时间限制无关。通过幅度估计方法测量对附加电阻性负载（LSS）的心理物理敏感性。客观测量的LSS较高的人比LSS较低的人有更大的主观不耐受呼吸器的使用。这些发现表明，主观呼吸耐受性与个人的心理物理特征和实际的生理效应有关。此外，不适可能与实际运动限制无关。
The degree to which subjective tolerance of respirator loads is related to physiologic effects and to psychophysical load sensitivity was investigated in this study. Fifty-two normal volunteers walked on a treadmill while breathing through a variety of respirator-type resistance and dead-space loads. Visual analog scales measuring perceived time limit of exercise and discomfort were both related to the ventilatory work imposed by the loads. Respiratory timing was related to discomfort but not to time limit. Psychophysical sensitivity to added resistive loads (LSS) was measured by the magnitude estimation method. Persons with higher objectively measured LSS had greater subjective intolerance induced by respirator use than persons of lower LSS. These findings suggest that subjective respirator tolerance is related to a person''s psychophysical characteristics and to the actual physiologic effects. Furthermore, discomfort may be dissociated from actual exercise limitation.