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临床试验/NCT00692601
NCT00692601已完成1 期

Effect of Differing Doses of A Sweet Pepper Extract - Capsiate (A Capsaicin Analogue) - On Energy Expenditure and Blood Parameters in Humans During Exercise

Hamilton Health Sciences Corporation2 个研究点 分布在 1 个国家目标入组 12 人开始时间: 2008年4月最近更新:
适应症

试验速览

阶段
1 期
状态
已完成
入组人数
12
试验地点
2
主要终点
Respiratory Exchange Ratio (RER) for substrate use

研究概览

简要总结

Capsiate is a non-pungent analogue of capsaicin, the component of hot peppers that makes them hot or spicy. Unlike capsaicin, capsiate is not spicy or hot. Ingestion of capsiate has been shown to increase resting oxygen consumption, body temperature, and the burning of fat. As such, capsiate appears to act in a manner similar to that of many other substances that energize us, increase our alertness and cause a rushing feeling by affecting a system in our body that is responsible for the release of adrenaline. The major difference, however, is that capsiate is broken down in the stomach into two components: vanilla and a fatty acid, and is not absorbed as capsiate into the blood stream at all. This implies that the way capsiate works is likely by acting on the cells in the gut (before it is broken down)rather than affecting all other cells in the body as it would do if it ended up in the blood. Therefore, the gut cells are thought to be the ones responsible for triggering the full-body adrenaline response. In any case, the use of capsiate has been shown to be effective in preventing weight gain and as such it may represent a possible therapy for treating obesity. Many obesity-related programs not involving medication advocate the use of diet and/or exercise. However, one of the biggest problems with weight loss from dieting alone is a general decrease in our body's ability to burn the food we eat as energy. This very problem is the reason for why people turn to adrenaline-releasing drugs like caffeine and ephedra. Unfortunately though, if too much is consumed, there is a high risk of bad side-effects. However, low dose caffeine/ephedra compounds (that are within specified FDA limits) have recently been reported to be effective. Moreover, these compounds are used with great frequency by people attempting to lose weight.

Given that capsiate increases body temperature, promotes the burning of body fat and has an exceptionally great side-effect profile, it looks to be a very effective supplement for use in treatment of obesity and overweight. As such, it would be important to test this supplement along with exercise. This is because consuming capsiate with exercise may enhance its effectiveness in increasing the burning of body fat. The primary purpose of this study is to examine the response of young healthy males to a 90 minute bout of moderate intensity cycling after having consumed 0 mg, 3 mg, or 10 mg of capsiate.

详细描述

Hypotheses

Based on the rationale and brief background above we propose the following substantive hypotheses:

  1. Ingestion of capsiate 30min prior to exercise will elevate resting and exercising oxygen consumption (VO2) in a hierarchical manner: 10>3>0mg
  2. Respiratory exchange ratio will be shifted toward greater lipid oxidation (i.e., toward 0.7) in a hierarchical manner: 10>3>0mg

Our secondary hypotheses are:

  • A greater rise in glycerol and FFA at rest and during exercise in a hierarchical manner: 10>3>0mg
  • A greater rise in catecholamine (Epinephrine and Norepinephrine) concentrations in a hierarchical manner: 10>3>0mg

研究设计

研究类型
Interventional
分配方式
Randomized
干预模型
Crossover
主要目的
Basic Science
盲法
Triple (Participant, Investigator, Outcomes Assessor)

入排标准

年龄范围
18 Years 至 30 Years(Adult)
性别
Male
接受健康志愿者

入选标准

  • Healthy men
  • Recreationally active
  • Non-smokers
  • Age 18-30 years
  • Favourable (low risk) answers on Standard Health Questionnaire (part of approved consent form)
  • Peak VO2 of > 40 ml/kg/min
  • Recruited from the local McMaster University campus or surrounding community.

排除标准

  • Contraindicated health conditions which would render someone "clinically" unhealthy i.e. diabetes, liver, kidney abnormalities, etc.
  • Possible allergies to the study products (Capsiate or Placebo)
  • The use of foods, other natural health products or pharmaceuticals that may interact with the study products
  • The use of natural health products that alter the outcome measures of the trial

结局指标

主要结局

Respiratory Exchange Ratio (RER) for substrate use

时间窗: breath by breath analysis of oxygen uptake and carbon dioxide release (recorded as the average oxygen uptake and carbon dioxide relsease every 30 seconds)

次要结局

  • Heart Rate(measured 8 times over 180 minutes)
  • Blood Pressure monitoring(measured 8 times over 180 minutes)
  • Blood biomarkers (blood glucose, glycerol, lactate, Free fatty acids [FFA])(measured 6 times over 180 minutes)
  • Plasma Catecholamines (Epinephrine, norepinephrine)(measured 6 times over 180 minutes)

研究者

申办方类型
Other

研究点 (2)

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