Ratings of perceived effort during expiratory pressure tasks in healthy adults

IF 1.9 4区医学 Q3 PHYSIOLOGY

Respiratory Physiology & Neurobiology Pub Date : 2024-09-24 DOI:10.1016/j.resp.2024.104356

Avery E. Dakin , Michelle S. Troche

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引用次数: 0

Abstract

Purpose

Expiratory muscle strength training (EMST) is a resistance exercise used to improve maximal expiratory pressure and airway protective functions (cough and swallow) in clinical populations. Although ratings of perceived exertion/effort (RPE) are commonly used in exercise prescription and monitoring, they have been underutilized in EMST and require investigation. Our study aims were to: (1) examine how healthy adults rate their effort using the EMST-150 device and MicroRPM respiratory manometer; (2) assess variability in RPE; and (3) compare RPE and relative expiratory pressures obtained from the two devices.

Method

Healthy adults completed thirty randomized expiratory maneuvers into a respiratory manometer and an EMST-150 device. RPE was measured using the Borg Category Ratio Scale. Linear mixed multilevel models were used for Aim 1 and 3, and coefficient of variation was used for Aim 2.

Results

Twenty healthy adults (Median age: 24.5 years) participated. Results demonstrated a strong positive relationship between resistive load and perceived effort when using both devices. Intra-individual variability in perceived effort decreased as resistive load increased. Participants produced an average of 18.2 % lower expiratory pressure when blowing into the manometer (relative to their maximum) than when blowing into the EMST device.

Discussion

Our results support the utilization of RPE in EMST research and clinical practice. The addition of RPE as a measure of intensity during respiratory exercise prescription may be used in future research to help refine EMST protocols and improve rehabilitation outcomes.

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健康成年人在完成呼气压力任务时对感知努力程度的评分。

目的：呼气肌力训练（EMST）是一种阻力运动，用于改善临床人群的最大呼气压力和气道保护功能（咳嗽和吞咽）。虽然在运动处方和监测中通常使用体力/努力值（RPE），但在呼气肌力训练中却未得到充分利用，因此需要对其进行研究。我们的研究目的是(1) 研究健康成年人如何使用 EMST-150 设备和 MicroRPM 呼吸压力计评价自己的努力程度；(2) 评估 RPE 的可变性；(3) 比较两种设备获得的 RPE 和相对呼气压力：方法：健康成年人使用呼吸压力计和 EMST-150 设备完成 30 次随机呼气操作。使用博格分类比率量表测量相对呼气压力。目标 1 和 3 采用线性混合多层次模型，目标 2 采用变异系数：20 名健康成年人（中位年龄：24.5 岁）参加了研究。结果表明，在使用两种设备时，阻力负荷与感知努力之间存在很强的正相关关系。随着阻力负荷的增加，感知用力的个体内变异性降低。参与者向压力计吹气时（相对于最大值）产生的呼气压力比向 EMST 设备吹气时平均低 18.2%：我们的研究结果支持在 EMST 研究和临床实践中使用 RPE。在呼吸运动处方中增加 RPE 作为强度测量方法可用于未来的研究，以帮助完善 EMST 方案并改善康复效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Respiratory Physiology & Neurobiology 医学-呼吸系统

CiteScore

4.80

自引率

8.70%

发文量

104

审稿时长

54 days

期刊介绍： Respiratory Physiology & Neurobiology (RESPNB) publishes original articles and invited reviews concerning physiology and pathophysiology of respiration in its broadest sense. Although a special focus is on topics in neurobiology, high quality papers in respiratory molecular and cellular biology are also welcome, as are high-quality papers in traditional areas, such as: -Mechanics of breathing- Gas exchange and acid-base balance- Respiration at rest and exercise- Respiration in unusual conditions, like high or low pressure or changes of temperature, low ambient oxygen- Embryonic and adult respiration- Comparative respiratory physiology. Papers on clinical aspects, original methods, as well as theoretical papers are also considered as long as they foster the understanding of respiratory physiology and pathophysiology.