Respiratory Muscle Strength and Jiu-Jitsu-Specific Performance in Male Brazilian Jiu-Jitsu Athletes
2026年8月26日 更新者:Halic University
Relationship of Maximal Inspiratory and Expiratory Pressures With Jiu-Jitsu-Specific Anaerobic Performance and Static Kimono Grip Endurance in Male Brazilian Jiu-Jitsu Athletes: A Cross-Sectional Study
Brazilian Jiu-Jitsu (BJJ) is an intermittent combat sport that requires repeated high-intensity efforts and sustained gripping.
This analytical cross-sectional study will examine whether respiratory muscle strength is associated with BJJ-specific anaerobic performance and static kimono grip endurance in adult male BJJ athletes.
Forty athletes will attend three assessment visits separated by 48 to 72 hours.
Maximal inspiratory pressure, maximal expiratory pressure, and spirometric indices (forced vital capacity [FVC], forced expiratory volume in 1 second [FEV1], FEV1/FVC ratio, and peak expiratory flow [PEF]) will be measured at the first visit.
The Jiu-Jitsu Anaerobic Performance Test and the Maximum Static Kimono Grip Test will be completed at the other two visits in randomized order.
The primary analysis will examine the association between maximal inspiratory pressure and the total number of valid repetitions completed during the Jiu-Jitsu Anaerobic Performance Test.
Spirometric indices will be evaluated as secondary outcomes.
調査の概要
状態
状態
まだ募集していません
条件
条件
詳細な説明
This is an analytical cross-sectional observational study involving 40 male Brazilian Jiu-Jitsu athletes aged 18 to 40 years.
Assessments will be completed during three visits separated by 48 to 72 hours.
At Visit 1, eligibility will be assessed and written informed consent will be obtained.
Demographic and sport-related information, including self-reported height, body weight, and Brazilian Jiu-Jitsu experience, will be recorded.
Spirometry will be performed using acceptable and repeatable forced expiratory maneuvers in accordance with current ATS/ERS technical standards.
Forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), FEV1/FVC ratio, and peak expiratory flow (PEF) will be recorded; percent-predicted and z-score values will also be documented when available.
Respiratory muscle strength will be assessed as maximal inspiratory pressure (MIP) and maximal expiratory pressure (MEP).
Participants will perform at least five acceptable maneuvers for each pressure measurement, with up to eight attempts when necessary.
The highest acceptable value meeting reproducibility criteria will be recorded in cmH2O.
At Visits 2 and 3, participants will complete the Jiu-Jitsu Anaerobic Performance Test (JJAPT) and the Maximum Static Kimono Grip Test on separate days in randomized order.
Before each performance test, participants will complete a standardized sport-specific warm-up.
The JJAPT consists of five 60-second work bouts separated by 45 seconds of passive recovery.
A partner whose body weight is within 5% of the participant's self-reported body weight will be used, and the total number of valid butterfly-guard lifting repetitions will be recorded.
For the static kimono grip test, a kimono is wrapped around a horizontal bar and the participant maintains a suspended position with maximal elbow flexion for as long as possible; performance is recorded in seconds.
The primary analysis will assess the relationship between MIP and JJAPT total valid repetitions.
Secondary analyses will assess MEP in relation to JJAPT performance and MIP and MEP in relation to static kimono grip endurance.
Spirometric indices will be summarized descriptively and examined in exploratory secondary analyses in relation to the performance outcomes.
Self-reported body weight and Brazilian Jiu-Jitsu experience in months will be considered as prespecified covariates.
研究の種類
研究の種類
観察的
入学 (推定)
入学
40
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究場所
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-
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Istanbul、トルコ(Türkiye)、34337
- Roger Gracie Academy Turkey
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コンタクト:
- Omer Guliyev
- 電話番号:+90 534 786 70 90
- メール:omerguliyev@rgaistanbul.com
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主任研究者:
- Muhammed Hüseyin Pekeren
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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
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
Adult male Brazilian Jiu-Jitsu athletes who train regularly at clubs or academies in Istanbul, Türkiye, and meet the prespecified eligibility criteria.
Participants will be recruited by non-probability sampling.
説明
Inclusion Criteria:
- Male sex
- Age 18 to 40 years
- At least 1 year of Brazilian Jiu-Jitsu experience
- Brazilian Jiu-Jitsu training on at least 2 days per week during the previous 3 months
- Familiarity with gi/kimono training and the butterfly-guard lifting movement
- Ability to safely and technically perform the Maximum Static Kimono Grip Test and the Jiu-Jitsu Anaerobic Performance Test
- Provision of written informed consent
Exclusion Criteria:
- Diagnosed cardiovascular, respiratory, neurological, metabolic, or musculoskeletal condition that may affect maximal testing or participant safety
- Active pain, acute injury, or relevant surgery during the previous 6 months
- Current regular use of cigarettes, electronic cigarettes, or inhaled nicotine products
- Medical advice to avoid maximal physical effort
- Regular use of medication that may materially affect study measurements
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
グループ/コホートの数
1
コホートと介入
グループ/コホートグループ/コホート |
|---|
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Male Brazilian Jiu-Jitsu Athletes
Adult male Brazilian Jiu-Jitsu athletes who train regularly and complete spirometric pulmonary function, respiratory muscle strength, BJJ-specific anaerobic performance, and static kimono grip endurance assessments.
No intervention will be assigned.
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この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Jiu-Jitsu Anaerobic Performance Test Total Valid Repetitions
時間枠:At Visit 2 or Visit 3, within 6 days after Visit 1
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Total number of valid butterfly-guard lifting repetitions completed across five 60-second work bouts separated by 45 seconds of passive recovery.
Higher values indicate better BJJ-specific anaerobic performance.
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At Visit 2 or Visit 3, within 6 days after Visit 1
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二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Maximal Inspiratory Pressure
時間枠:At Visit 1
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The highest acceptable maximal inspiratory pressure meeting prespecified reproducibility criteria, recorded in centimeters of water (cmH2O).
Higher values indicate greater inspiratory muscle strength.
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At Visit 1
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Maximal Expiratory Pressure
時間枠:At Visit 1
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The highest acceptable maximal expiratory pressure meeting prespecified reproducibility criteria, recorded in centimeters of water (cmH2O).
Higher values indicate greater expiratory muscle strength.
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At Visit 1
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Maximum Static Kimono Grip Test Time
時間枠:At Visit 2 or Visit 3, within 6 days after Visit 1
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Maximum time, in seconds, that the participant maintains a suspended position with maximal elbow flexion while gripping a kimono wrapped around a horizontal bar.
Higher values indicate greater static kimono grip endurance.
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At Visit 2 or Visit 3, within 6 days after Visit 1
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Forced Vital Capacity (FVC)
時間枠:At Visit 1
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Forced vital capacity measured by spirometry and recorded in liters (L).
Percent-predicted and z-score values will also be documented when available.
Higher values generally indicate greater ventilatory volume, with interpretation based on appropriate reference limits.
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At Visit 1
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Forced Expiratory Volume in 1 Second (FEV1)
時間枠:At Visit 1
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Forced expiratory volume in the first second measured by spirometry and recorded in liters (L).
Percent-predicted and z-score values will also be documented when available.
Higher values generally indicate greater expiratory volume in the first second, interpreted using appropriate reference limits.
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At Visit 1
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FEV1/FVC Ratio
時間枠:At Visit 1
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Ratio of forced expiratory volume in the first second to forced vital capacity, calculated from acceptable spirometry maneuvers and recorded as a ratio and percentage.
The z-score and lower limit of normal will be documented when available; lower values may indicate airflow limitation.
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At Visit 1
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Peak Expiratory Flow (PEF)
時間枠:At Visit 1
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Peak expiratory flow obtained during acceptable forced spirometry maneuvers and recorded in liters per second (L/s).
The highest acceptable value will be recorded.
Higher values indicate greater maximal expiratory flow.
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At Visit 1
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協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
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)
研究開始
2026年10月1日
一次修了 (推定)
一次修了
2027年4月1日
研究の完了 (推定)
研究の完了
2027年4月1日
試験登録日
最初に提出
最初に提出
2026年8月25日
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
2026年8月26日
最初の投稿 (実際)
最初の投稿
2026年8月31日
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
2026年8月31日
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
2026年8月26日
最終確認日
最終確認日
2026年8月1日
詳しくは
本研究に関する用語
その他の研究ID番号
その他の研究ID番号
- HALICU-BJJ-2209-001
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
未定
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
いいえ
米国FDA規制機器製品の研究
いいえ
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