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Effects of the Q-Collar During High-Intensity Cycling Exercise

2026年9月1日 更新者：University of Northern Iowa

Cardiovascular, Cerebral, and Performance Responses to Q-Collar™ Use in a 5-km Cycling Time Trial

This study examined the effects of wearing the Q-Collar during high-intensity cycling exercise. Eleven recreationally trained male participants completed two 5-kilometer cycling time trials: one while wearing the Q-Collar and one without the Q-Collar. During and after each trial, researchers measured cardiovascular responses, brain oxygenation, blood lactate, perceived exertion, cognitive performance, and cycling performance. The purpose of the study was to determine whether wearing the Q-Collar affects physiological responses, cognitive function, or performance during high-intensity exercise.

研究概览

地位

完全的

条件

干预/治疗

详细说明

This randomized crossover study examined the effects of Q-Collar use during high-intensity cycling exercise. Recreationally trained male participants completed two laboratory testing sessions in randomized order: a 5-kilometer cycling time trial while wearing the Q-Collar and a 5-kilometer cycling time trial without the Q-Collar. The Q-Collar applies mild bilateral compression to the internal jugular veins and is designed to increase cerebral blood volume.

During each trial, cardiovascular responses were assessed continuously, while prefrontal cortex oxygenation was measured using functional near-infrared spectroscopy. Blood lactate and ratings of perceived exertion were assessed during exercise, and cognitive performance was evaluated before and after each cycling trial. Cycling performance was also recorded.

The study was designed to determine whether wearing the Q-Collar alters physiological responses to high-intensity exercise, particularly cardiovascular function and prefrontal cortex oxygenation, and whether these responses are accompanied by changes in cognitive or cycling performance. The crossover design allowed each participant to complete both conditions and therefore serve as his own control.

研究类型

介入性

注册 (实际的)

11

阶段

  • 不适用

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习地点

  • 美国
    • Iowa
      • Cedar Falls、Iowa、美国、50614
        • University of Northern Iowa

参与标准

研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

  • 成人

接受健康志愿者

是的

描述

Inclusion Criteria:

  • Male participants
  • 18-35 years old
  • Recreationally trained
  • Provided written informed consent
  • Achieved a maximal oxygen consumption (VO₂max) classified as "good" or "excellent" during cardiopulmonary exercise testing

Exclusion Criteria:

  • Failure to meet the required "good" or "excellent" VO₂max classification during cardiopulmonary exercise testing
  • Outside age range

学习计划

本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。

研究是如何设计的？

设计细节

  • 主要用途：基础科学
  • 分配：随机化
  • 介入模型：交叉作业
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：Q-Collar Then Control
Participants completed a 5-kilometer cycling time trial while wearing the Q-Collar, followed by a control 5-kilometer cycling time trial without the Q-Collar after a washout period of at least 72 hours.
设备：Q-Collar™
The Q-Collar™ is a wearable neck device that applies mild bilateral compression to the internal jugular veins. Participants wore the Q-Collar during a 5-kilometer cycling time trial. The device was individually fitted according to manufacturer guidelines and remained in place throughout the exercise trial.
实验性的：Control Then Q-Collar
Participants completed a control 5-kilometer cycling time trial without the Q-Collar, followed by a 5-kilometer cycling time trial while wearing the Q-Collar after a washout period of at least 72 hours.
设备：Q-Collar™
The Q-Collar™ is a wearable neck device that applies mild bilateral compression to the internal jugular veins. Participants wore the Q-Collar during a 5-kilometer cycling time trial. The device was individually fitted according to manufacturer guidelines and remained in place throughout the exercise trial.

研究衡量的是什么？

主要结果指标

结果测量
措施说明
大体时间
Prefrontal Cortex Oxygenation
大体时间：All throughout each 5-kilometer cycling time trial, approximately 10 minutes
Changes in prefrontal cortex oxygenated hemoglobin were continuously measured using functional near-infrared spectroscopy during 5-kilometer cycling time trials performed with and without the Q-Collar. Data were evaluated across kilometer time points.
All throughout each 5-kilometer cycling time trial, approximately 10 minutes

次要结果测量

结果测量
措施说明
大体时间
Cycling Time-Trial Performance
大体时间：At completion of each 5-kilometer cycling time trial, approximately 30 seconds
Time in seconds required to complete the 5-kilometer cycling time trial was recorded for the Q-Collar and control conditions.
At completion of each 5-kilometer cycling time trial, approximately 30 seconds
Choice Reaction Time
大体时间：At baseline, 5 minutes into exercise, immediately post-exercise, and 10 minutes post-exercise during each experimental visit, approximately 2 minutes at each time point
Choice reaction time was assessed using a computerized Stroop task. Reaction time and response accuracy were evaluated across the Q-Collar and control conditions.
At baseline, 5 minutes into exercise, immediately post-exercise, and 10 minutes post-exercise during each experimental visit, approximately 2 minutes at each time point
Heart Rate
大体时间：During each 5-kilometer cycling time trial, approximately 10 minutes
Heart rate was continuously assessed using cardiac impedance and compared across the Q-Collar and control conditions.
During each 5-kilometer cycling time trial, approximately 10 minutes
Stroke Volume
大体时间：During each 5-kilometer cycling time trial, approximately 10 minutes
Stroke volume was continuously assessed using cardiac impedance and compared across the Q-Collar and control conditions.
During each 5-kilometer cycling time trial, approximately 10 minutes
Cardiac Output
大体时间：During each 5-kilometer cycling time trial, approximately 10 minutes
Cardiac output was continuously assessed using cardiac impedance and compared across the Q-Collar and control conditions.
During each 5-kilometer cycling time trial, approximately 10 minutes
Blood Lactate
大体时间：Immediately following each 5-kilometer cycling time trial, approximately 1 minute
Blood lactate concentration (mmol/L) was measured from an earlobe capillary blood sample immediately following each cycling time trial.
Immediately following each 5-kilometer cycling time trial, approximately 1 minute
Rating of Perceived Exertion
大体时间：Immediately following each 5-kilometer cycling time trial, approximately 30 seconds
Rating of perceived exertion was assessed using the Borg 6-20 scale immediately following each 5-kilometer cycling time trial.
Immediately following each 5-kilometer cycling time trial, approximately 30 seconds

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

赞助

University of Northern Iowa

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2024年3月20日

初级完成 (实际的)

2024年5月8日

研究完成 (实际的)

2024年5月8日

研究注册日期

首次提交

2026年8月27日

首先提交符合 QC 标准的

2026年9月1日

首次发布 (实际的)

2026年9月9日

研究记录更新

最后更新发布 (实际的)

2026年9月9日

上次提交的符合 QC 标准的更新

2026年9月1日

最后验证

2026年9月1日

更多信息

与本研究相关的术语

关键字

其他研究编号

  • IRB-FY24-97

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

IPD 计划说明

There is no current plan for public sharing of individual participant data; however, de-identified data may be considered upon reasonable request.

药物和器械信息、研究文件

研究美国 FDA 监管的药品

不

研究美国 FDA 监管的设备产品

是的

在美国制造并从美国出口的产品

不

此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.

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