Diaphragmatic Facilitation and Upper Extremity Performance in Volleyball Players
2026年8月25日 更新者：Kubra Kardes、Istinye University
Immediate Effects of Diaphragmatic Facilitation on Upper Extremity Performance in Volleyball Players
The diaphragm contributes to both respiration and trunk stabilization. Effective diaphragmatic function may support postural control, force transfer, and upper extremity performance during dynamic activities. However, evidence regarding the immediate effects of manual diaphragmatic facilitation on upper extremity performance in athletes remains limited.
This study aims to investigate the immediate effects of manual diaphragmatic facilitation on upper extremity performance and respiratory function in actively participating volleyball players. Participants will receive an approximately 15-minute session of manual diaphragmatic facilitation. Pulmonary function, respiratory muscle strength, and upper extremity strength, stability, and endurance will be assessed immediately before and after the intervention. Assessments will include spirometry, maximal inspiratory and expiratory pressures, the Medicine Ball Throw Test, the Closed Kinetic Chain Upper Extremity Stability Test, and the Scapular Endurance Test.
研究概览
研究类型
介入性
注册 (估计的)
50
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
-
-
-
Istanbul、土耳其（türkiye）、34010
- 招聘中
- Istinye University
-
接触：
- Kubra Kardes, Asst.Prof
- 电话号码：05387115631
- 邮箱：kubrakoce@gmail.com
-
-
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:
- Aged between 18 and 30 years.
- Regularly participating in volleyball for at least one year.
- Training at least twice per week or actively participating in volleyball at the league or tournament level.
- No history of a serious upper extremity or trunk injury within the previous six months, i-including injuries affecting the shoulder, scapular region, or spine.
- No diagnosed chronic respiratory disease, including asthma, chronic obstructive pulmonary disease, or allergic bronchitis.
- Willing and able to provide written informed consent.
Exclusion Criteria:
- History of surgery involving the upper extremity, spine, or trunk within the previous six months, including shoulder arthroscopy or spinal disc surgery.
- Presence of an active musculoskeletal injury, including tendinopathy, bursitis, or ligament injury.
- Presence of a diagnosed respiratory disease, including asthma, chronic obstructive pulmonary disease, or bronchiectasis.
- Presence of a diagnosed postural or spinal deformity that may affect study assessments, including scoliosis, clinically significant kyphosis, or clinically significant lordosis.
- History of a neurological or cardiovascular disease.
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：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：双倍的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
|
实验性的：Intervention Group
Diaphragmatic Facilitation Group
|
Following a standardized dynamic warm-up, participants in the intervention group will receive a single session of manual resisted diaphragmatic facilitation.
|
|
实验性的：Control Group
Sham Control Group
|
Participants in the control group will complete the same dynamic warm-up protocol, followed by a sham intervention consisting of superficial, non-facilitatory palpation and general breathing instructions.
|
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 |
|---|---|---|
|
Forced Vital Capacity
大体时间：4 weeks
|
Forced vital capacity is the maximum volume of air that a participant can forcibly exhale after taking the deepest possible breath.
It will be measured by spirometry and recorded in liters.
Higher values generally indicate greater ventilatory capacity, whereas lower values may indicate reduced pulmonary capacity or expiratory limitation.
|
4 weeks
|
|
Forced Expiratory Volume in One Second
大体时间：4 weeks
|
Forced expiratory volume in one second is the volume of air that a participant can forcibly exhale during the first second of a forced expiratory maneuver.
It will be measured by spirometry and recorded in liters.
Higher values generally indicate better expiratory airflow, whereas lower values may indicate reduced expiratory airflow.
|
4 weeks
|
|
Ratio of Forced Expiratory Volume in One Second to Forced Vital Capacity
大体时间：4 weeks
|
The ratio of forced expiratory volume in one second to forced vital capacity represents the proportion of the forced vital capacity exhaled during the first second of a forced expiratory maneuver.
It will be calculated from spirometric measurements and reported as a percentage.
Higher values generally indicate a greater proportion of air expelled during the first second, whereas lower values may indicate expiratory airflow limitation.
The results will be interpreted with consideration of age- and sex-appropriate reference values.
|
4 weeks
|
|
Maximal Inspiratory Pressure
大体时间：4 weeks
|
Maximal inspiratory pressure will be used to assess inspiratory muscle strength, primarily reflecting the function of the diaphragm and other inspiratory muscles.
The measurement will be repeated three times, and the highest valid value will be recorded in centimeters of water.
A higher absolute pressure value indicates greater inspiratory muscle strength, whereas a lower absolute pressure value indicates weaker inspiratory muscle strength.
|
4 weeks
|
|
Maximal Expiratory Pressure
大体时间：4 weeks
|
Maximal expiratory pressure will be used to assess expiratory muscle strength, particularly the strength of the abdominal and other expiratory muscles.
The measurement will be repeated three times, and the highest valid value will be recorded in centimeters of water.
A higher pressure value indicates greater expiratory muscle strength, whereas a lower pressure value indicates weaker expiratory muscle strength.
|
4 weeks
|
|
Medicine Ball Throw Distance
大体时间：4 weeks
|
Upper extremity explosive power will be assessed using the Medicine Ball Throw Test.
The participant will sit with the back supported against a wall and the legs extended and will be instructed to throw the medicine ball as far as possible.
Throwing distance will be measured in meters.
A longer distance indicates greater upper extremity explosive power, whereas a shorter distance indicates lower explosive power.
|
4 weeks
|
|
Closed Kinetic Chain Upper Extremity Stability Test Score
大体时间：4 weeks
|
Upper extremity stability, strength, power, and endurance will be assessed using the Closed Kinetic Chain Upper Extremity Stability Test.
The participant will assume a push-up position with the hands placed on two markers positioned 90 centimeters apart.
The participant will alternately move each hand across the body to touch the opposite marker during the specified test period.
The total number of valid touches will be recorded.
A higher number of touches indicates better upper extremity functional performance and stability, whereas a lower number indicates poorer performance.
|
4 weeks
|
|
Scapular Muscular Endurance Time
大体时间：4 weeks
|
The functional endurance of the scapular stabilizing muscles will be assessed using the Scapular Muscular Endurance Test.
An appropriately sized wooden rod will be positioned between the participant's elbows while both scapulae are maintained in a neutral position.
The length of time for which the participant can maintain the standardized test position will be recorded in seconds.
A longer duration indicates greater scapular muscular endurance, whereas a shorter duration indicates lower scapular muscular endurance.
|
4 weeks
|
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。
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 (估计的)
2026年8月30日
初级完成 (估计的)
2026年11月15日
研究完成 (估计的)
2026年11月30日
研究注册日期
首次提交
2026年8月21日
首先提交符合 QC 标准的
2026年8月21日
首次发布 (实际的)
2026年8月25日
研究记录更新
最后更新发布 (实际的)
2026年8月27日
上次提交的符合 QC 标准的更新
2026年8月25日
最后验证
2026年8月1日
更多信息
与本研究相关的术语
其他相关的 MeSH 术语
其他研究编号
- 2025/07
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
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.