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首页> 外文学位 >Respiratory sensation in normal subjects: The relationship between inspiratory motor drive and perception during resistive loading and pressure threshold loading.
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Respiratory sensation in normal subjects: The relationship between inspiratory motor drive and perception during resistive loading and pressure threshold loading.

机译：正常受试者的呼吸感觉：阻力负荷和压力阈值负荷期间吸气运动驱动与知觉之间的关系。

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摘要

This study had two primary purposes, the first was to determine the effect of inspiratory muscle strength training (IMST) on load detection (LD), magnitude estimation (ME) and respiratory related evoked potentials (RREP). The second purpose was to compare cross modality matching, using handgrip, with a numerical scale, Borg scale, for expressing breathing difficulty during ventilatory loading. Two types of ventilatory load were used: resistive load (DeltaR) and pressure threshold load (APT). Two experiments were performed.;Twenty-three subjects completed the experiments. The subjects were trained at 75% MIP, 6 breaths a set, 4 sets a day for a total of 4 weeks. The results showed that high intensity-low repetition pressure threshold IMST significantly increased maximum inspiratory pressure (MEP), accompanied with decreased P 0.1. The MEP increased from 97.8 +/- 3.81 cmH2O to 132.2 +/- 4.5 cmH2O, while P0.1 decreased from 1.53 +/- 0.14 cmH2O to 1.19 +/- 0.11 cmH2O. The IMST did not affect LD of DeltaR but decreased LD of DeltaPT. The slope of log Pm-log HG did not change. The subjects generated less Pm/MIP but reported the similar handgrip response. The early latency components of the RREP: P1, Nf, P1a and N1, were not affected by IMST.;Handgrip and Borg scale ME were compared in the second experiment. The identical protocols were followed. The result showed that the subjects reported significantly lower Borg scale values but similar handgrip values. It is believed that subjects have the tendency to change their points of reference with the handgrip, which gives the Borg scale better repeatability.;In summary, IMST can significantly improve muscle strength and decrease inspiratory drive, which results in decreased load perception. Decreased perception can be reflected in decreased detection of loads and a decreased ME of loads if the Borg scale is used. Both handgrip and Borg scale successfully represented how subjects sensed load levels within a single session. When comparing between sessions, cross modality matching with the handgrip failed to register consistent values because the subjects tended to change their points of reference from one session to the next. The Borg scale, in contrast, showed good repeatability.
机译：这项研究有两个主要目的，第一个目的是确定吸气肌肉力量训练（IMST）对负荷检测（LD），强度估计（ME）和呼吸相关诱发电位（RREP）的影响。第二个目的是使用手柄和数字量表Borg量表比较交叉方式匹配，以表达呼吸负荷时的呼吸困难。使用了两种类型的通气负荷：电阻负荷（DeltaR）和压力阈值负荷（APT）。进行了两个实验。；二十三个受试者完成了实验。对受试者进行75％MIP训练，一组6次呼吸，每天4组，共4周。结果表明，高强度-低重复压力阈值IMST显着增加了最大吸气压力（MEP），同时降低了P 0.1。 MEP从97.8 +/- 3.81 cmH2O增加到132.2 +/- 4.5 cmH2O，而P0.1从1.53 +/- 0.14 cmH2O减少到1.19 +/- 0.11 cmH2O。 IMST不影响DeltaR的LD，但降低了DeltaPT的LD。 log Pm-log HG的斜率没有变化。受试者产生较少的Pm / MIP，但报告了相似的手柄反应。 RREP的早期延迟组件：P1，Nf，P1a和N1不受IMST的影响；在第二个实验中比较了Handgrip和Borg标度ME。遵循相同的方案。结果表明，受试者报告的Borg量表值明显较低，但握力值相似。相信受试者倾向于通过握柄改变其参考点，这使博格量表具有更好的可重复性。总之，IMST可以显着提高肌肉力量并减少吸气驱动力，从而导致负荷感知降低。如果使用Borg量表，则感知的减少可以反映为减少的负载检测和减少的ME负载。握力和Borg量表均成功代表受试者在单个会话中如何感测负荷水平。在会话之间进行比较时，使用手柄的跨模态匹配无法记录一致的值，因为对象倾向于将其参考点从一个会话更改为下一个会话。相反，伯格量表显示出良好的可重复性。

著录项

  • 作者

    Huang, Chien Hui.;

  • 作者单位

    University of Florida.;

  • 授予单位 University of Florida.;
  • 学科 Biology Animal Physiology.;Health Sciences Rehabilitation and Therapy.
  • 学位 Ph.D.
  • 年度 2001
  • 页码 117 p.
  • 总页数 117
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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