Objectives

To assess the test-retest reliability of inspiratory load detection and load magnitude perception tests in healthy volunteers.

Design

Cohort of convenience.

Setting

Respiratory physiology laboratory.

Participants

Twenty healthy adults.

Interventions

On two separate occasions participants performed tests of inspiratory loading. Participants breathed through custom made resistive tubing and were asked to indicate when they detected a different resistance during inspiration. In a second test participants rated the magnitude of presented inspiratory loads using the modified Borg score.

Main Outcome Measures

Intra-class Correlation Coefficient (ICC_2,1) values for repeated tests of inspiratory load detection threshold and load magnitude rating.

Results

ICC_2,1 values ranged from 0.657–0.786 for load detection testing and 0.739 to 0.969 for rating of load magnitude.

Conclusions

The tests are simple and reliable measures of inspiratory load detection and magnitude rating. They can be used in future research to determine the effectiveness of interventions to reduce the effort of breathing in health and disease.

中文翻译：

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吸气阻力负荷大小及检测试验的可靠性。

目标

评估健康志愿者吸气负荷检测和负荷幅度感知试验的重测信度。

设计

方便的队列。

环境

呼吸生理学实验室。

参与者

二十个健康的成年人。

干预

在两个不同的场合，参与者进行了吸气负荷测试。参与者通过定制的电阻管呼吸，并被要求指出他们在吸气过程中何时检测到不同的阻力。在第二个测试中，参与者使用修改后的 Borg 评分来评估所呈现的吸气负荷的大小。

主要观察指标

类内相关系数 (ICC _2,1 ) 值，用于重复测试吸气负荷检测阈值和负荷量级额定值。

结果

ICC _2,1值的范围为 0.657–0.786（用于负载检测测试）和 0.739 至 0.969 的负载量级额定值。

结论

这些测试是吸气负荷检测和幅度评级的简单而可靠的措施。它们可用于未来的研究，以确定干预措施的有效性，以减少健康和疾病呼吸的努力。