Ecklonia Cava Supplementation and Cycling Performance
Acute Ecklonia Cava Supplementation Fails to Enhance Performance in Trained Cyclists
The goal of this clinical trial (randomised, double-blind, placebo-controlled crossover study) is to investigate whether supplementation with Ecklonia cava, a natural extract derived from brown seaweed, affects exercise performance and physiological responses in trained cyclists.
The main questions it aims to answer are:
Does Ecklonia cava supplementation improve cycling performance, including power output during steady-state exercise and short maximal sprints? Does Ecklonia cava supplementation influence physiological responses to exercise, such as blood glucose, blood lactate, heart rate, and oxygen consumption?
Researchers will compare Ecklonia cava supplementation to a placebo (a look-alike substance with no active ingredients) to determine whether the supplement has any effect on performance or physiological responses.
In this crossover design, all participants will receive both the Ecklonia cava supplement and the placebo on separate occasions, with a washout period between conditions.
Participants will:
Ingest either Ecklonia cava or a placebo 30 minutes before exercise testing Complete a 60-minute cycling protocol at a moderate intensity Perform repeated short-duration maximal sprint efforts following the steady-state exercise Attend laboratory testing sessions under both supplement and placebo conditions Undergo measurements of physiological responses, including blood glucose, blood lactate, heart rate, oxygen consumption, and respiratory exchange ratio Have exercise performance assessed through measures of power output during cycling
調査の概要
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
-
-
-
Kingston upon Thames、イギリス、KT1 2EE
- Department of Applied and Human Sciences
-
-
参加基準
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
説明
Inclusion Criteria:
- experienced in cycling (defined as completing at least four hours of cycle training per week with a minimum of two years of experience)
Exclusion Criteria:
- Smoker
- cardiovascular disease
- anti-hypertensive medication
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：処理
- 割り当て：ランダム化
- 介入モデル：クロスオーバー割り当て
- マスキング：ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
プラセボコンパレーター：プラセボ補充
|
Placebo Supplementation
|
|
実験的：Ecklonia Cava Supplementation
|
Ecklonia Cava Supplementation
|
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 |
|---|---|---|
|
Peak Power Output During Sprint Performance (Watts)
時間枠：Immediately after the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
Peak power output achieved during 20-second maximal sprint efforts performed following a fixed-intensity (55% Wmax) 60-minute cycling protocol
|
Immediately after the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
|
Mean Power Output During Sprint Performance (Watts)
時間枠：Immediately after the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
Mean power output recorded during repeated 20-second maximal sprint efforts following steady-state cycling
|
Immediately after the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
|
Blood Lactate Concentration During Sprint Cycling (mmol/L)
時間枠：Repeated sprint cycling (3) completed immediately after the 60-minute submaximal cycling protocol, a blood sample taken 2 minutes after each sprint cycling bout. Following each 30-minute supplementation protocol.
|
Blood lactate concentration measured following each repeated sprint efforts (3)
|
Repeated sprint cycling (3) completed immediately after the 60-minute submaximal cycling protocol, a blood sample taken 2 minutes after each sprint cycling bout. Following each 30-minute supplementation protocol.
|
|
Blood Glucose Concentration During Sprint Cycling (mmol/L)
時間枠：Repeated sprint cycling (3) completed immediately after the 60-minute submaximal cycling protocol, a blood sample taken 2 minutes after each sprint cycling bout. Following each 30-minute supplementation protocol.
|
Blood glucose concentration measured following repeated sprint efforts
|
Repeated sprint cycling (3) completed immediately after the 60-minute submaximal cycling protocol, a blood sample taken 2 minutes after each sprint cycling bout. Following each 30-minute supplementation protocol.
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Heart Rate During Submaximal Cycling (beats per minute)
時間枠：During the 60-minute submaximal cycling protocol, 30 minutes after supplementation (each condition)
|
Average heart rate measured during a 60-minute steady-state cycling protocol performed at 55% maximal power output
|
During the 60-minute submaximal cycling protocol, 30 minutes after supplementation (each condition)
|
|
Blood Lactate Concentration During Submaximal Cycling (mmol/L)
時間枠：Every 20-minutes during the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
Blood lactate concentration measured during steady-state cycling at 55% maximal power output
|
Every 20-minutes during the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
|
Blood Glucose Concentration During Submaximal Cycling (mmol/L)
時間枠：Every 20-minutes during the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
Blood glucose concentration measured during steady-state cycling at 55% maximal power output
|
Every 20-minutes during the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
|
Oxygen Consumption (VO₂) During Submaximal Cycling (ml/kg/min)
時間枠：During the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
Oxygen consumption measured using indirect calorimetry during steady-state cycling
|
During the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
|
Respiratory Exchange Ratio (RER) During Submaximal Cycling
時間枠：During the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
Respiratory exchange ratio measured during steady-state cycling using expired gas analysis
|
During the 60-minute submaximal cycling protocol, 30 minutes after supplementation
|
協力者と研究者
スポンサー
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。