Respiratory Function and Athletic Performance in Professional Soccer Players
2026年5月23日 更新者：Yunus Emre Tutuneken、Istinye University
Association Between Respiratory Function and Athletic Performance Parameters in Professional Soccer Players: A Cross-Sectional Study
This prospective observational study aims to investigate the relationship between respiratory function and multidimensional athletic performance parameters in professional soccer players.
The primary hypothesis of the study is that soccer players with enhanced respiratory function and superior respiratory muscle strength will exhibit optimized motor performance outcomes and shorter (faster) reactive reaction times.
Investigators will evaluate respiratory muscle strength, spirometric pulmonary functions, dynamic balance, core and abdominal endurance, and reactive visuomotor reaction times during a single testing session within the competitive season.
調査の概要
状態
まだ募集していません
詳細な説明
Professional soccer players from Istanbulspor A.S. Football Club will be screened and enrolled based on strict eligibility criteria.
Eligible athletes will undergo a comprehensive, single-session testing protocol designed to prevent fatigue-related bias.
Testing will commence with a baseline pulmonary function assessment and respiratory muscle strength evaluation (maximal inspiratory pressure [MIP] and maximal expiratory pressure [MEP]).
Following a standardized rest interval, dynamic balance will be quantified using the Y-Balance Test (YBT).
Subsequently, reactive visuomotor reaction times will be measured using the wireless BlazePod LED system.
Finally, participants will execute higher-intensity, sport-specific performance assessments, including the isometric plank test for core endurance, a 60-second timed sit-up test for abdominal muscular endurance, and the T-drill test for agility.
A standardized 10-minute seated rest interval will be strictly enforced between all physical assessments to ensure full physiological recovery.
Bivariate correlation models will be utilized to analyze the direct relationships between respiratory indicators and performance indices.
研究の種類
観察的
入学 (推定)
31
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
はい
サンプリング方法
非確率サンプル
調査対象母集団
The study population will consist of elite-level athletic professionals, specifically young adult male professional soccer players.
Participants will be recruited from a licensed professional football club actively competing in national league training and competition schedules.
説明
Inclusion Criteria:
- Participants will be actively competing, licensed professional soccer players. -Participants will be engaged in regular, team-based training and competitive match schedules.
- Participants will voluntarily provide written informed consent before any study-related physical performance assessments are conducted.
Exclusion Criteria:
- Participants will be excluded if they present with an acute upper or lower respiratory tract infection that could potentially affect pulmonary function or maximal respiratory muscle performance.
- Participants will be excluded if they have a documented history of major cardiothoracic surgery.
- Participants will be excluded if they have any diagnosed respiratory and/or cardiovascular disorder associated with dyspnea or impaired pulmonary mechanics.
- Participants will be excluded if they present with any condition that elevates clinical risk during maximal inspiratory and expiratory pressure assessments.
- Participants will be excluded if they have sustained an acute musculoskeletal injury within the preceding 6 weeks that could compromise maximal physical exertion during sport-specific performance testing.
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
研究はどのように設計されていますか？
デザインの詳細
この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Maximal Expiratory Pressure (MEP)
時間枠：2 hours
|
Description: Respiratory muscle strength will be assessed using a portable digital respiratory pressure meter.
Participants will execute a maximal expiratory maneuver from total lung capacity after full inspiration while wearing a nose clip.
The highest reproducible value from at least three technically acceptable trials will be recorded in centimeters of water (cmH₂O).
|
2 hours
|
|
Maximal Inspiratory Pressure (MIP)
時間枠：2 hour
|
Description: Respiratory muscle strength will be assessed using a portable digital respiratory pressure meter.
Participants will perform a maximal inspiratory maneuver from residual volume following complete expiration while wearing a nose clip.
The highest reproducible value from at least three technically acceptable trials will be recorded in centimeters of water (cmH₂O).
|
2 hour
|
|
Reactive Visuomotor Reaction Time
時間枠：2 hours
|
Cognitive-motor reaction speed will be quantified using a wireless LED pod system arrayed in an equidistant semi-circular matrix.
Participants will utilize their dominant lower limb to deactivate randomly illuminated pods as quickly as possible across 10 sets of 22 randomized stimuli.
The mean reaction time across the challenge will be recorded in milliseconds (ms).
|
2 hours
|
|
Dynamic Postural Stability (Y-Balance Test)
時間枠：2 hours
|
Functional reach capacity and dynamic balance will be quantified using a standardized Y-Balance Test apparatus.
While maintaining a single-leg stance, participants will push indicator blocks in the anterior, posteromedial, and posterolateral directions.
The maximum reach distance from three successful trials for each direction will be normalized to leg length and used to calculate a comprehensive Composite Score percentage (%) for both limbs.
|
2 hours
|
|
Static Core Stabilization Endurance (Prone Plank Test)
時間枠：2 hours
|
Isometric core endurance will be quantified using the isometric prone plank test on a high-density mat.
Participants will support their body weight exclusively on their forearms and toes, maintaining a strict neutral horizontal alignment of the head, spine, hips, and ankles.
The test will be terminated when the participant voluntarily discontinues or fails to maintain correct alignment.
Total duration will be recorded in seconds (sec).
|
2 hours
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Forced Vital Capacity (FVC)
時間枠：2 hours
|
Pulmonary function will be evaluated using a computerized spirometry system in accordance with ATS/ERS guidelines.
Participants will perform a maximal inspiratory effort followed by a rapid and forceful expiration sustained until complete exhalation.
The highest reproducible value will be expressed both as an absolute volume in liters (L) and as a percentage of predicted reference values (FVC%).
|
2 hours
|
|
Forced Expiratory Volume in 1 Second (FEV1%)
時間枠：2 hours
|
Pulmonary function will be evaluated using a computerized spirometry system in accordance with ATS/ERS guidelines.
The volume of air exhaled during the first second of the FVC maneuver will be extracted.
The highest reproducible value will be expressed both as an absolute volume in liters (L) and as a percentage of predicted reference values (FEV1%).
|
2 hours
|
|
Peak Expiratory Flow (PEF)
時間枠：2 hours
|
Pulmonary function will be evaluated using a computerized spirometry system in accordance with ATS/ERS guidelines.
The maximum flow rate achieved during the forced expiratory maneuver will be measured.
The highest reproducible value will be expressed in liters per second (L/s) and as a percentage of predicted reference values (PEF%).
|
2 hours
|
|
Dynamic Abdominal Endurance (60-Second Sit-Up Test)
時間枠：2 hours
|
Dynamic muscular endurance of the abdominal wall will be evaluated using a timed sit-up protocol.
From a supine position with knees flexed at 90° and hands crossed over the chest, participants will flex the trunk until the elbows touch the knees, then return to the baseline position.
The total number of correctly executed repetitions completed within exactly 1 minute (reps) will be recorded.
|
2 hours
|
|
Change-of-Direction Speed and Agility (T-Drill Test)
時間枠：2 hours
|
On-field agility and change-of-direction speed will be quantified using a standardized T-configuration cone course monitored by electronic timing gates.
Participants will perform forward sprinting, lateral side-shuffling, and backpedaling maneuvers through the course.
The fastest completion time out of three successful trials will be recorded in seconds (sec).
|
2 hours
|
協力者と研究者
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スポンサー
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (推定)
2026年5月25日
一次修了 (推定)
2026年7月5日
研究の完了 (推定)
2026年7月10日
試験登録日
最初に提出
2026年5月23日
QC基準を満たした最初の提出物
2026年5月23日
最初の投稿 (実際)
2026年6月1日
学習記録の更新
投稿された最後の更新 (実際)
2026年6月1日
QC基準を満たした最後の更新が送信されました
2026年5月23日
最終確認日
2026年5月1日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。