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首页> 外文期刊>Clinical Practice >The Effects of Neurocognitive and Physical Tasks on End-Tidal Carbon Dioxide Levels and Respiratory Rate in Healthy Individuals - A Pilot Study
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The Effects of Neurocognitive and Physical Tasks on End-Tidal Carbon Dioxide Levels and Respiratory Rate in Healthy Individuals - A Pilot Study

机译：神经认知和身体任务对健康个体潮气末二氧化碳水平和呼吸频率的影响-一项初步研究

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Objective: A significant proportion of the Canadian population experiences breathing related health problems that may impact day-to-day living. Individuals with post-concussion syndrome may also report deficits in neurocognitive and physical abilities. Recent findings may suggest breathing to be linked to deficits commonly observed in this population. Research exploring breathing patterns within a concussed population, however, is relatively novel. The purpose of this pilot study was to explore the effects of completing a neurocognitive test versus a physical task on end-tidal carbon dioxide (ETCO_(2)) and respiratory rate in a healthy population. Subjects: Eleven healthy participants (7 males, 4 females; age M=23.7 years; SD=4.9 ) were recruited to participate in the pilot study. Methods: Participants had their ETCO_(2) and respiratory rate recorded before and during a neurocognitive and physical task in a single 45-60 minute session. General demographic information was collected in addition to anthropomorphic measures (i.e., weight and height). The Nijmegen Questionnaire was also completed to assess breathing pattern. Baseline breathing data was then measured at rest in a sitting position before and during the completion of neurocognitive testing using the Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) battery. Baseline breathing data was then measured at rest in a standing position before and during four walking trials that varied in walking speed and treadmill elevation. There were also two minute breaks between each task and trial. Data were analyzed using Dependent Samples T-Tests and One-way Repeated Measures ANOVAs. The rejection criteria were at an alpha level p<.05. Results: Statistically significant increases were observed in respiratory rate (t (10)=-5.52, p =.001) during the ImPACT; ETCO_(2) (F (4,7)=14.18, p =.002) during all four walking trials; and respiratory rate (F (4,7)=7.02, p =.01) during three walking trials (i.e., slow self-selected walking speed at 5% grade, slow self-selected walking speed at -5% grade, and fast self-selected walking speed at 0% grade). No significant changes were observed in ETCO_(2) during the ImPACT battery or in respiratory rate during a slow self-selected walking speed at 0% grade. Conclusion: The current pilot study suggests that neurocognitive and physical tasks may result in changes in the ETCO_(2) and respiratory rate in a healthy population. These changes may be due to cognitive loading and increased physical demands on the cardiorespiratory system. Future investigations are warranted in examining the effects of completing similar neurocognitive and physical tasks in a concussed population.
机译：目标：很大一部分加拿大人口经历与呼吸有关的健康问题，可能会影响日常生活。脑震荡后综合症患者也可能报告神经认知和身体能力不足。最近的发现可能表明呼吸与该人群中常见的缺陷有关。然而，在脑震荡人群中探索呼吸模式的研究相对较新。这项初步研究的目的是探讨在健康人群中完成神经认知测验与体力劳动对潮气末二氧化碳（ETCO_（2））和呼吸频率的影响。受试者：招募了11名健康受试者（男7例，女4例;年龄M = 23.7岁; SD = 4.9）参加了这项初步研究。方法：参与者在一次神经认知和身体任务之前和期间的45-60分钟内记录其ETCO_（2）和呼吸频率。除拟人化指标（即体重和身高）外，还收集了一般人口统计信息。奈梅亨问卷也已完成，以评估呼吸模式。然后，使用立即脑震荡后评估和认知测试（ImPACT）电池，在完成神经认知测试之前和期间，在休息姿势下测量基线呼吸数据。然后在四次步行试验之前和期间，以站立姿势测量静止呼吸时的基线呼吸数据，这些试验的步行速度和跑步机高度有所不同。每个任务和试用之间也有两分钟的休息时间。使用相关样本T检验和单向重复测量方差分析分析数据。拒绝标准为α水平p <.05。结果：在ImPACT期间观察到呼吸频率的统计学显着增加（t（10）= -5.52，p = .001）;在所有四次步行试验中，ETCO_（2）（ F（4,7）= 14.18， p = .002）;和三项步行试验中的呼吸频率（i F（4,7）= 7.02，i p = .01）（即，慢速自选行走速度为5％级，慢速自选行走速度为- 5％的坡度，以及0％的坡度的快速自选行走速度）。在ImPACT电池期间，ETCO_（2）或在0％坡度下缓慢的自行选择的步行速度期间，呼吸频率均未观察到显着变化。结论：目前的初步研究表明，神经认知和身体活动可能会导致健康人群的ETCO_（2）和呼吸频率发生变化。这些变化可能是由于认知负荷和心肺系统对身体的需求增加所致。有必要进行进一步的研究，以检查在脑震荡人群中完成类似的神经认知和身体任务的影响。

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