Cadence Modulation to Improve Well-Being, Kinematics and Aerobic Performance in Cyclists
調査の概要
詳細な説明
In the first session, each individual will be asked to fill out a questionnaire to regarding cycling experience, prior bike fits (with data sheets when available), and injury history. Maximal aerobic capacity (VO2max) will be determined. During the test, subjects will be asked rate exertion. Before testing, the system will be calibrated with known oxygen and carbon dioxide concentrations. During the test, subjects will be asked to breathe normally through a low dead space bidirectional turbine. Inspired and expired gases will be analyzed for concentrations of O2 and CO2, to determine alveolar gas exchange. Total ventilation (VE), respiratory rate, oxygen consumption (VO2), carbon dioxide (VCO2) will be measured, and respiratory exchange ratio (RER; VCO2/VO2) will be calculated continuously during the test and expressed as a 30-second rolling average.
Participants will return 48 hours later, at which time EOC will be determined after a moderate intensity prolonged cycling exercise (PCE) at seven different cadences. Cadences from 50rpm to 110rpm will be randomly generated and introduced every 3 minutes, followed by a 3 minute cool down at FCC at 40% PP (Figure Subjects will then be pair matched by gender and randomized into control (FCC) or EOC modulation groups.
48 hours following EOC testing, subject will return for a second progressive maximal cycling test performed at FCC or EOC based on group assignment.
Subjects will then participate in a 6 week high intensity training (HIIT) indoor cycling program at their prescribed cadence (FCC or EOC), using cadence meters. Training will consist of three non-consecutive days each week for 60 min, and alternate between two HIIT workouts. Resistance will be increased to meet the HIIT requirement, while cadence will remain at FCC or EOC. Subjects will be asked to warm-up at a light (3/10) workload for 10 minutes, followed by HIIT consisting of 4 minutes at an intensity of 8/10 on the modified Borg, and 90 seconds recovery (2/10). This will be repeated 8 times, followed by 10 minutes of cool down. The alternating HIIT workout will include a 10 minute warm up, followed by 12 intervals lasting 2 minutes at an RPE of 9/10 and 3 minutes of recovery. The session will conclude with a 10 minute cool down.
Within one week of completing their training program, subjects will return for their fourth and final study visit, at which time a VO2max test and kinematic data collection will be repeated at FCC or EOC.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
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Wisconsin
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Madison、Wisconsin、アメリカ、53705
- University of Wisconsin
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-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- An experienced cyclist will be defined as one with at least 5 years of cycling experience and 5000 miles of training on a road bike with a clipless pedal system.
- Able to tolerate strenuous, maximal exercise and comply with a 6 week training protocol
- Have access to an indoor trainer or spin bike with a cadence sensor in order to train 3 times per week for 60 minutes
Exclusion Criteria:
- Taking medication which could impact cardiovascular function or performance (stimulants, beta-blockers, e.g.)
- Significant cardiac or pulmonary disease (congenital cardiac disease, uncontrolled hypertension, uncontrolled asthma, e.g.)
- Musculoskeletal injuries that preclude a maximal cycling effort and participation in training program
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：なし
- 介入モデル：単一グループの割り当て
- 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 |
|---|---|
|
他の：Cycling Cadence Modulation
3 initial visits to collect baseline information; 6-week HIIT indoor cycling program at the individual prescribed cadence; final study visit for post-intervention measures.
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6-week high intensity training (HIIT) indoor cycling program, described later, at their prescribed cadence (FCC or EOC), using cadence meters.
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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 |
|---|---|---|
|
Time to exhaustion T(max)
時間枠：Baseline
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time to reach exhaustion
|
Baseline
|
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Ventilatory threshold (VT)
時間枠：Baseline
|
Baseline
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|
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Maximal cardiac output
時間枠：Baseline
|
Baseline
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Maximal stroke volume
時間枠：Baseline
|
Baseline
|
|
|
decreased trunk lean
時間枠：Baseline
|
decrease in degree of lean in truck
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Baseline
|
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decreased ankle dorsiflexion
時間枠：Baseline
|
decrease in amount of ankle dorsiflexion
|
Baseline
|
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decreased knee splay
時間枠：Baseline
|
decreased degree of knee splay
|
Baseline
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Improved VO2 max
時間枠：6 weeks
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Increased maximum O2 volume
|
6 weeks
|
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Increased O2 consumption at VT
時間枠：6 weeks
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Improved oxygen consumption at ventilatory threshold
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6 weeks
|
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Time to VT
時間枠：6 weeks
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Improved time to reach ventilatory threshold
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6 weeks
|
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Time to T(max)
時間枠：6 weeks
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Improved time to reach exhaustion
|
6 weeks
|
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decreased trunk lean
時間枠：6 weeks
|
decrease in degree of lean in truck
|
6 weeks
|
|
decreased ankle dorsiflexion
時間枠：6 weeks
|
decrease in amount of ankle dorsiflexion
|
6 weeks
|
|
decreased knee splay
時間枠：6 weeks
|
decreased degree of knee splay
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6 weeks
|
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change in overall soreness and fatigue
時間枠：6 weeks
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decrease in reported soreness and fatigue as measured and reported via Metrifit software
|
6 weeks
|
協力者と研究者
捜査官
- 主任研究者：Andrew M Watson, MD、University of Wisconsin, Madison
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
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
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。