Response Variability to Exercise

Официальное название

Response Variability to Exercise in Adults

Обзор

In this proposal, the investigators challenge the assumption that following the physical activity guidelines implies benefit for ALL adults, and that if benefit is not achieved in response to first line therapy, it will be by simply exercising more. Thus, for improving cardiorespiratory fitness and cardiometabolic risk factors, unanswered questions include: 1) To what extent, regardless of increasing exercise intensity or amount, is exercise not associated with benefit? Demonstration of a resistance to benefit through exercise in a substantial number of adults would be a novel and important finding, would counter the assumptions of many if not most health care practitioners, and could have immediate and direct application in all health care settings. 2) To what extent will non-responders to first line therapy (150 min/wk) be required to increase exercise intensity or amount to achieve benefit? 3) To what extent will failure to improve CRF segregate (be associate with) with cardiometabolic risk factors? The investigators propose that adults who remain exercise resistant for improvement in CRF and cardiometabolic risk despite increasing amount or intensity are at high risk of metabolic disease and consequently, are candidates for alternative treatment strategies.

Подробное описание

The trial has two objectives:

Primary objective: After 16 weeks of first line therapy (150 min/wk of MPA), does increasing exercise intensity or amount for 16 weeks improve cardiorespiratory fitness (CRF, VO2peak) deferentially depending on the CRF response at 16 weeks.

Secondary objective: Determine whether common cardiometabolic risk factors segregate/cluster with respect to variation in CRF to first line therapy in adults, and, whether clinically meaningful improvements in cardiometabolic risk factors segregate with improvement in CRF.

Вмешательства

• Поведенческое Low amount, low intensity exercise
  Participants will exercise under supervision. Exercise dose will vary by amount and intensity
• Поведенческое Low amount, high intensity exercise
  Participants will exercise under supervision. Exercise dose will vary by amount and intensity
• Поведенческое High amount, high intensity exercise
  Participants will exercise under supervision. Exercise dose will vary by amount and intensity

Первичные конечные точки

• Cardiorespiratory Fitness [Срок оценки: Measured at baseline and every 4 weeks for 32 weeks.]

Вторичные конечные точки (10)

• Change in glucose [Срок оценки: Measured at baseline, 16 and 32 weeks.]
• Change in blood lipids [Срок оценки: Measured at baseline, 16 and 32 weeks.]]
• Change in insulin [Срок оценки: Measured at baseline, 16 and 32 weeks.]]
• Change in triglycerides [Срок оценки: Measured at baseline, 16 and 32 weeks.]
• Change in body fat [Срок оценки: Measured at baseline, 16 and 32 weeks]
• Change in abdominal fat [Срок оценки: Measured at baseline, 16 and 32 weeks.]
• Change in lean body mass [Срок оценки: Measured at baseline 16 and 32 weeks.]
• Change in subcutaneous fat [Срок оценки: Measured at baseline, 16 and 32 weeks.]
• Change in obesity phenotype [Срок оценки: Measured at baseline 16 and 32 weeks.]
• Change on body weight [Срок оценки: Measured at baseline, 16 and 32 weeks.]

Критерии участия

Критерии включения

• Sedentary lifestyle (planned physical activity for one day per week or less).
• Weight stable (± 2 kg) for 6 months prior to the beginning of the study.
• BMI between 20 and 40 kg/m2.

Критерии исключения

• Physical impairment which would make the intervention very difficult or unsafe according to doctor's advice.
• Diabetes, current smokers.
• Plan to move from the area in next 8 months.

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Да

Дизайн исследования

Распределение

Рандомизированное

Модель

Параллельные группы

Маскирование

Открытое

Основная цель

Лечение

Центры проведения

Канада · 1 центр

• School of Kinesiology and Health Studies, Queen's University — Kingston

Публикации

• Ross R, Day AG, Stotz PJ, Wade S, Cooke R, Miller E, Liberatore N, Lamarche B. Response variability to exercise (REVISE): Study rationale, design and methods. Contemp Clin Trials Commun. 2025 Jul 5;46:101519. doi: 10.1016/j.conctc.2025.101519. eCollection 2025 Aug. PMID 40688055

Идентификаторы

NCT: NCT05496751 · Ross2022

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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