Flywheel Training Effects on Power and Performance in Youth Olympic Weightlifters (FLY-WL)
2026年5月28日 更新者：Ahmed Awad Ahmed Hassan、New Damietta University Hospital
Effects of Flywheel Inertial Training on Lower-Limb Power, Trunk Stability, and Olympic Weightlifting Performance in Youth Athletes
This study investigated the effects of flywheel inertial training on lower-limb power, trunk stability, and Olympic weightlifting performance in youth athletes.
Eighteen youth Olympic weightlifters were allocated to a flywheel training group or a control group.
Both groups continued their regular weightlifting training over a 10-week intervention period.
The experimental group performed additional flywheel-based exercises twice weekly.
Outcomes included measures of lower-limb power, trunk inclination during lifting, weightlifting performance, and technical error frequency.
調査の概要
詳細な説明
This study investigated the effects of flywheel inertial training on lower-limb power, trunk stability, and Olympic weightlifting performance in youth athletes. Flywheel training is an eccentric-overload method that has been suggested to enhance neuromuscular adaptations, particularly in power and movement control. Eighteen youth Olympic weightlifters participated in this controlled intervention study and were allocated into a flywheel training group and a control group.
Both groups continued their regular Olympic weightlifting training program, which included technical practice of the snatch and clean, strength exercises, and general physical preparation. The experimental group additionally performed flywheel-based exercises twice per week over a 10-week training period. The intervention was progressively structured to ensure appropriate load adaptation and technical execution.
Outcome measures included assessments of lower-limb power, trunk inclination during lifting positions, performance in the snatch and clean, and technical error frequency. Pre- and post-intervention comparisons were used to evaluate the effects of the training program.
研究の種類
介入
入学 (実際)
18
段階
- 適用できない
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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Damietta、エジプト、34517
- Damietta University, Faculty of Sports Science
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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
就学可能な年齢
- 子
健康ボランティアの受け入れ
はい
説明
Inclusion Criteria:
- Male youth Olympic weightlifters aged 13-17 years
- Actively participating in structured Olympic weightlifting training
- Technical ability to perform snatch and clean lifts
- Free from musculoskeletal injury at the time of participation
- Medically fit for resistance training and high-intensity exercise
Exclusion Criteria:
- Presence of injury limiting participation in training or testing
- Absence rate greater than 20% of training or intervention sessions
- Participation in additional structured lower-limb eccentric or flywheel training outside the study program
- Any medical condition contraindicating resistance training
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
- 主な目的：処理
- 割り当て：非ランダム化
- 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：Flywheel Inertial Training Group
Participants in this group performed their regular Olympic weightlifting training program combined with additional flywheel inertial training twice per week for 10 weeks.
The flywheel training included lower-limb and trunk exercises such as squats, split squats, Romanian deadlifts, pulling variations, and anti-rotation core exercises.
The training was progressively structured to ensure appropriate eccentric overload and technical control.
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Flywheel inertial training was performed twice weekly for 10 weeks in addition to regular Olympic weightlifting training.
The program included lower-limb and trunk exercises such as squats, split squats, Romanian deadlifts, pulling variations, and core stabilization exercises.
The training emphasized eccentric overload and progressive resistance to enhance power production and movement control.
他の名前：
Participants performed conventional Olympic weightlifting training including snatch and clean and jerk technique practice, squats, pulling exercises, strength exercises, mobility exercises, and general physical preparation according to the regular training program.
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アクティブコンパレータ：Control Group (Traditional Weightlifting Training)
Participants in this group continued their regular Olympic weightlifting training program only, which included snatch and clean technique practice, strength exercises, pulling derivatives, squats, mobility work, and general physical preparation, without any additional flywheel training.
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Participants performed conventional Olympic weightlifting training including snatch and clean and jerk technique practice, squats, pulling exercises, strength exercises, mobility exercises, and general physical preparation according to the regular training program.
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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 |
|---|---|---|
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Snatch Performance
時間枠：Baseline and 10 weeks post-intervention
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Snatch performance was assessed as the best successful snatch lift completed by each participant according to technical criteria.
The unit of measurement was kilograms (kg).
The outcome was analyzed as the change in kilograms from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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Clean Lift Performance
時間枠：Baseline and 10 weeks post-intervention
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Clean lift performance was assessed as the best successful clean lift completed by each participant without performing the jerk phase.
The unit of measurement was kilograms (kg).
The outcome was analyzed as the change in kilograms from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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Countermovement Jump Height
時間枠：Baseline and 10 weeks post-intervention
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Countermovement jump height was measured to assess lower-limb explosive power.
The unit of measurement was centimeters (cm).
The outcome was analyzed as the change in centimeters from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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Trunk Inclination Angle During Snatch Receiving Position
時間枠：Baseline and 10 weeks post-intervention
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Trunk inclination angle was measured during the lowest stable snatch receiving position using video-based kinematic analysis.
The angle was measured from the vertical reference line passing through the hip joint.
The unit of measurement was degrees (°).
The outcome was analyzed as the change in degrees from baseline to 10 weeks.
A lower angle indicates a more upright trunk position.
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Baseline and 10 weeks post-intervention
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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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Squat Jump Height
時間枠：Baseline and 10 weeks post-intervention
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Squat jump height was measured to assess concentric lower-limb power.
The unit of measurement was centimeters (cm).
The outcome was analyzed as the change in centimeters from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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Standing Long Jump Distance
時間枠：Baseline and 10 weeks post-intervention
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Standing long jump distance was measured to assess horizontal lower-limb explosive power.
The unit of measurement was centimeters (cm).
The outcome was analyzed as the change in centimeters from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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Trunk Inclination Angle During Clean Receiving Position
時間枠：Baseline and 10 weeks post-intervention
|
Trunk inclination angle was measured during the lowest stable clean receiving position using video-based kinematic analysis.
The angle was measured from the vertical reference line passing through the hip joint.
The unit of measurement was degrees (°).
The outcome was analyzed as the change in degrees from baseline to 10 weeks.
A lower angle indicates a more upright trunk position.
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Baseline and 10 weeks post-intervention
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Total Weightlifting Performance
時間枠：Baseline and 10 weeks post-intervention
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Total weightlifting performance was calculated as the sum of the best successful snatch lift and the best successful clean lift without jerk.
The unit of measurement was kilograms (kg).
The outcome was analyzed as the change in kilograms from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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Technical Error Frequency During Snatch and Clean Attempts
時間枠：Baseline and 10 weeks post-intervention
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Technical-error frequency was calculated from video analysis by counting the total number of observed technical errors during selected snatch and clean attempts.
The coded errors included excessive trunk inclination, forward or backward jump during receiving, unstable receiving position, loss of balance during recovery, and visible bar path deviation.
The unit of measurement was number of errors.
The outcome was analyzed as the change in number of errors from baseline to 10 weeks.
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Baseline and 10 weeks post-intervention
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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。
捜査官
- 主任研究者：Ahmed Hassan, PhD、Faculty of Sports Science, Damietta University
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 (実際)
2025年12月20日
一次修了 (実際)
2026年2月27日
研究の完了 (実際)
2026年2月27日
試験登録日
最初に提出
2026年5月22日
QC基準を満たした最初の提出物
2026年5月28日
最初の投稿 (実際)
2026年6月3日
学習記録の更新
投稿された最後の更新 (実際)
2026年6月3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28日
最終確認日
2026年5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
- DU-FLY-2026
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?
はい
IPD プランの説明
Individual participant data (IPD) collected in this study will include anthropometric data, performance measures (snatch, clean, jump tests), trunk kinematic variables, and technical error scores.
De-identified data will be shared with qualified researchers upon reasonable request for secondary analysis.
IPD 共有時間枠
Data will become available after publication of the primary results and will remain accessible for a period of 5 years following publication.
IPD 共有アクセス基準
Access to the de-identified dataset will be granted upon reasonable request to the principal investigator.
Requests must include a brief research proposal and will be evaluated for scientific merit and ethical compliance.
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
- SAP
- ICF
- ANALYTIC_CODE
試験データ・資料
-
個人参加者データセット
情報識別子：OSF Registry: bc4mp情報コメント：De-identified individual participant data (IPD) will be available upon reasonable request to the principal investigator after publication. Access is restricted to academic research purposes and subject to ethical approval where required. Supporting materials including study protocol, statistical analysis plan, and analytic code are available via the Open Science Framework (OSF) registry.
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
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。