SIT LESS 4: How Does Reducing Sitting Time Improve Glucose and Lipid Metabolism? (SITLESS4)
SIT LESS 4: How Does Reducing Sitting Time Improve Glucose and Lipid Metabolism? A Study to Identify Underlying Mechanisms
Research has shown that replacing sitting time with low intensity physical activity (such as slowly walking and standing) has beneficial effects on metabolic health, like insulin sensitivity, comparable to improvements after sitting all day in combination with 1h streneous exercise.
The main objective of this study is to investigate the underlying mechanisms responsible for improved insulin sensitivity after 4 days of sitting less compared to sitting and exercise in healthy obese women. Our secondary objective is to investigate the effects of sitting less on cardio metabolic parameters.
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
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Maastricht、オランダ
- Maastricht University Medical Centre
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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:
- Signed informed consent
- Caucasian
- Postmenopausal women
- Aged 45-70 years at start of the study
- Body mass index (BMI) 25 - 35 kg/m2
- Stable dietary habits (no weight loss or gain >5kg in the past 3 months)
- Sedentary lifestyle (not more than 2,5 hours of exercise per week in the past 3 months)
Exclusion Criteria:
- Not able to complete the sitless try-out day according to the protocol
- Active diseases (cardiovascular, diabetes, liver, kidney, cancer or other)
- No use of medication interfering with investigated study parameters (as determined by responsible physician)
- Alcohol consumption of >2 servings per day
- Smoking in the past 6 months
- Participation in another biomedical trial which may have an effect on insulin sensitivity less than one month before the start of the study (screening visit)
- Mental or physical disability which interferes with physical activity
- Subjects with contra-indications for magnetic resonance imaging (MRI)
- Reported participation in night shift work 2 weeks prior to the start of the study (screening visit) and during study participation. Night work is defined as working between midnight and 6.00 AM.
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:防止
- 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: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:Sit regime
Subjects will follow the sit regime during four days.
Each day consists of 14 hours sitting, 1 hour walking and 1 hour standing and 8 hours sleeping.
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Activity regime of 4 days followed by a test day.
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実験的:Sit less regime
Subjects will follow the sit less regime during four days.
Each day will consist of 9 hours sitting, 3 hours walking, 4 hours standing and 8 hours sleeping.
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Activity regime of 4 days followed by a test day.
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実験的:Exercise regime
Subjects will follow the exercise regime during four days.
Each day will consist of 13 hours sitting, 1 hour walking, 1 hour standing, 1 hour exercise and 8 hours sleeping.
The cycle session will be at approximately 60% maximal power.
Exact cycling intensity and duration will be calculated to ensure equal total energy expenditure between the sitting less and the exercise regime.
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Activity regime of 4 days followed by a test day.
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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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Insulin sensitivity
時間枠:Day 5 of intervention period
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2-step hyperinsulinemic euglycemic clamp
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Day 5 of intervention period
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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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ex vivo skeletal muscle mitochondrial respiration
時間枠:Day 5 of intervention period
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oxygraph
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Day 5 of intervention period
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substrate oxidation
時間枠:Day 5 of intervention period
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indirect calorimetry RER
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Day 5 of intervention period
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Intrahepatic lipid content
時間枠:Day 5 of intervention period
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magnetic resonance spectroscopy
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Day 5 of intervention period
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Blood pressure
時間枠:Day 5 of intervention period
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average resting blood pressure over 30 minutes
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Day 5 of intervention period
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Plasma cardio metabolic markers
時間枠:Day 5 of intervention period
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endothelial dysfunction score (average Z-score of log transformed plasma sVCAM1, sICAM1 and sE-selectin)
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Day 5 of intervention period
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協力者と研究者
出版物と役立つリンク
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。
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