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首页> 外文学位 >Diaphragm and parasternal muscle recruitment, thoracoabdominal motion, and dyspnea responses to upper extremity exercise with normal breathing and inspiratory resistance breathing.
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Diaphragm and parasternal muscle recruitment, thoracoabdominal motion, and dyspnea responses to upper extremity exercise with normal breathing and inspiratory resistance breathing.

机译：正常呼吸和吸气阻力呼吸对上肢运动的肌和胸骨旁肌肉募集，胸腹运动和呼吸困难反应。

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摘要

Reduced upper extremity endurance is a response to dyspnea in chronic obstructive pulmonary disease (COPD). Physiological mechanisms contributing to this response include the competitive roles of the respiratory muscles during unsupported upper extremity exercise (UUEE) in COPD. The respiratory muscles are recruited to assist respiration and stabilize the chest wall during UUEE. The purpose of this quasi-experimental laboratory investigation was to describe and compare physiological responses of the respiratory muscles to arm exercise under two conditions: normal and inspiratory resistance breathing. The specific aims of the study were to: (1) determine the effect of UUEE on diaphragm and parasternal muscle electromyogram (EMG) signal amplitudes, the pattern of thoracoabdominal motion measured with Respitrace plethysmography, and the intensity of dyspnea measured with the visual analog scale; (2) identify relationships between EMG amplitudes, thoracoabdominal motion, and dyspnea; and, (3) compare respiratory muscle EMG amplitudes, the pattern of thoracoabdominal motion, and dyspnea between normal and resistance breathing. The sample consisted of 18 normal adult subjects between the ages of 33 and 47. Data were collected during arm rest and UUEE. Subjects served as their own controls.;Pertinent study findings are: (a) UUEE resulted in significant increases in inspiratory diaphragm EMG amplitudes, and inspiratory and expiratory parasternal muscle EMG amplitudes during normal breathing; (b) arm exercise was also associated with prolonged and dysphasic parasternal muscle contractions; (c) expiratory contraction of the inspiratory muscles occurred with asynchronous breathing patterns and in association with an increase of the sensation of dyspnea; (d) breathing against resistance resulted in significant increases in diaphragm, rib cage and accessory muscle recruitment, and significant increases in the sensation of dyspnea; and, (e) significant negative correlations were observed between the sensation of dyspnea and inspiratory diaphragm and parasternal muscle recruitment, such that dyspnea increased as recruitment of the diaphragm and parasternal muscle fibers decreased. These findings add to the knowledge of: (a) respiratory muscle recruitment during rest and arm exercise with normal breathing and inspiratory resistance breathing; and (b) the relationship between respiratory muscle recruitment and dyspnea. The findings also suggest clinical roles for: (a) dyspnea ratings in evaluation of patients with COPD, and (b) diaphragmatic breathing in the management of dyspnea in COPD.
机译：上肢耐力降低是对慢性阻塞性肺疾病（COPD）中呼吸困难的反应。导致此反应的生理机制包括COPD中无支撑的上肢运动（UUEE）期间呼吸肌的竞争作用。在UUEE期间，应募集呼吸肌肉以协助呼吸并稳定胸壁。这项准实验性实验室研究的目的是描述和比较两种条件下呼吸肌肉对手臂锻炼的生理反应：正常呼吸和吸气阻力呼吸。该研究的具体目的是：（1）确定UUEE对diaphragm肌和胸骨旁肌肌电图（EMG）信号幅度的影响，通过Respitrace体积描记法测量的胸腹运动模式以及通过视觉模拟量表测量的呼吸困难强度; （2）确定肌电图振幅，胸腹运动和呼吸困难之间的关系； （3）比较正常呼吸和阻力呼吸之间的呼吸肌肌电振幅，胸腹运动模式和呼吸困难。该样本由18位年龄在33至47岁之间的正常成年人组成。在休息和UUEE期间收集数据。受试者作为自己的对照。相关研究发现是：（a）UUEE导致正常呼吸过程中吸气E肌EMG幅度以及吸气和呼气胸骨旁肌EMG幅度明显增加； （b）手臂运动还与胸骨旁胸骨的肌肉延长和吞咽困难有关； （c）呼吸方式不同步并伴随呼吸困难的感觉而发生的呼吸肌的呼气收缩； （d）抵抗阻力的呼吸导致diaphragm肌，肋骨笼和辅助肌肉募集明显增加，呼吸困难的感觉明显增加； （e）呼吸困难和吸气diaphragm肌的感觉与胸骨旁肌的吸收之间存在显着的负相关，因此呼吸困难随着the肌和胸骨旁肌纤维的吸收减少而增加。这些发现增加了对以下方面的认识：（a）在休息和手臂锻炼期间呼吸正常，呼吸和吸气阻力呼吸恢复。 （b）呼吸肌募集与呼吸困难之间的关系。该发现还表明以下临床作用：（a）在评估COPD患者中的呼吸困难等级，以及（b）在COPD呼吸困难的处理中进行diaphragm肌呼吸。

著录项

  • 作者

    Breslin, Eileen Hanafin.;

  • 作者单位

    University of California, San Francisco.;

  • 授予单位 University of California, San Francisco.;
  • 学科 Nursing.;Animal Physiology.
  • 学位 D.N.S.
  • 年度 1989
  • 页码 163 p.
  • 总页数 163
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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