Nordic vs Blood Flow Restriction Nordic Exercise in Elite Female Pole Vaulters
Effects of Nordic Hamstring Exercise and Blood Flow Restriction-Assisted Nordic Hamstring Exercise on Hamstring Strength, Muscle Morphology and Functional Performance in Elite Adolescent Female Pole Vaulters: A Randomized Controlled Trial
調査の概要
状態
詳細な説明
Hamstring muscles play a crucial role in sprinting, acceleration, deceleration, and explosive athletic performance. Nordic Hamstring Exercise is widely recommended for increasing eccentric hamstring strength and reducing injury risk. However, evidence regarding the additional effects of blood flow restriction during Nordic Hamstring Exercise is limited, particularly in elite adolescent female athletes.
This randomized controlled trial aims to investigate whether adding blood flow restriction to Nordic Hamstring Exercise enhances adaptations in hamstring muscle strength, muscle morphology, and functional performance compared with conventional Nordic Hamstring Exercise and routine training alone.
Thirty-six elite adolescent female pole vaulters aged 12-18 years will be recruited from the Turkish Olympic Preparation Center. Participants will be allocated using block randomization into three groups:
Nordic Hamstring Exercise Group Blood Flow Restriction Nordic Hamstring Exercise Group Control Group Intervention groups will perform supervised exercise sessions three times weekly for eight weeks. The control group will continue regular training activities without additional hamstring-specific intervention.
Assessments will include hamstring muscle strength measured with a MicroFET2 handheld dynamometer, muscle morphology assessed using ultrasonography, and functional performance evaluated using a 30-meter sprint test.
研究の種類
入学 (推定)
段階
- 適用できない
連絡先と場所
研究連絡先
- 名前：İdil Esin Ünlü, Assist. Prof. Dr.
- 電話番号：+90 506 515 66 22
- メール：idil.unlu@toros.edu.tr
研究場所
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Adana、トルコ（Türkiye）
- 募集
- Adana Olympic Preparation Center
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コンタクト：
- Burçin Uğur, PHD
- 電話番号：+90 507 772 17 72
- メール：burcnugur@yahoo.com
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参加基準
適格基準
就学可能な年齢
- 子
- 大人
健康ボランティアの受け入れ
説明
Inclusion Criteria:
- Female athletes aged between 12 and 18 years.
- Elite pole vault athletes actively participating in organized training and competition.
- Minimum of 1 year of regular pole vault training experience.
- Participation in regular training at least 3 times per week.
- Ability to participate in an 8-week exercise program.
- Written informed assent from the athlete and written informed consent from a parent or legal guardian.
Exclusion Criteria:
- Any lower extremity musculoskeletal injury within the previous 6 months.
- Previous hamstring muscle surgery.
- Current pain or injury limiting sports participation.
- Neurological disorders affecting movement or balance.
- Cardiovascular conditions contraindicating exercise training or blood flow restriction.
- Any contraindication to blood flow restriction training.
- Participation in another structured hamstring strengthening program during the study period.
- Inability or unwillingness to comply with study procedures.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：他の
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：Nordic Hamstring Exercise
Participants will perform a supervised Nordic Hamstring Exercise program three times per week for 8 weeks in addition to their routine pole vault training.
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Participants will perform a supervised Nordic Hamstring Exercise program three times per week for 8 weeks in addition to their routine pole vault training.
The exercise program will be progressively increased according to participant tolerance and training progression.
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実験的：Blood Flow Restriction-Assisted Nordic Hamstring Exercise
Participants will perform Nordic Hamstring Exercise combined with blood flow restriction training three times per week for 8 weeks in addition to their routine pole vault training.
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articipants will perform a supervised Nordic Hamstring Exercise program combined with individualized blood flow restriction training three times per week for 8 weeks in addition to their routine pole vault training.
Blood flow restriction will be applied using pneumatic cuffs at a predetermined percentage of arterial occlusion pressure.
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介入なし：Control
Participants will continue their routine sports training without additional hamstring-specific exercise intervention.
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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
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Hamstring Muscle Strength
時間枠：Baseline and 8 weeks
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Isometric hamstring muscle strength will be assessed bilaterally using a MicroFET2 handheld dynamometer.
Three measurements will be recorded and the average value will be used for analysis.
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Baseline and 8 weeks
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Hamstring Muscle Thickness
時間枠：Baseline and 8 weeks
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Hamstring muscle thickness will be evaluated bilaterally using ultrasonography.
Three measurements will be obtained and averaged.
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Baseline and 8 weeks
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Hamstring Cross-Sectional Area
時間枠：Baseline and 8 weeks
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Cross-sectional area of the hamstring muscle will be assessed bilaterally using ultrasonography.
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Baseline and 8 weeks
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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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30-Meter Sprint Performance
時間枠：Baseline and 8 weeks
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Sprint performance will be assessed using a 30-meter sprint test.
The average of three trials will be used for analysis.
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Baseline and 8 weeks
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協力者と研究者
スポンサー
出版物と役立つリンク
一般刊行物
- Ripley NJ, Cuthbert M, Comfort P, McMahon JJ. Effect of additional Nordic hamstring exercise or sprint training on the modifiable risk factors of hamstring strain injuries and performance. PLoS One. 2023 Mar 2;18(3):e0281966. doi: 10.1371/journal.pone.0281966. eCollection 2023.
- Vianna KB, Rodrigues LG, Oliveira NT, Ribeiro-Alvares JB, Baroni BM. A Preseason Training Program With the Nordic Hamstring Exercise Increases Eccentric Knee Flexor Strength and Fascicle Length in Professional Female Soccer Players. Int J Sports Phys Ther. 2021 Apr 1;16(2):459-467. doi: 10.26603/001c.19452.
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
- 25.05.2026-05/82
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?
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