Comparing The Rehydration Properties Of Two Sports / Hydration Drinks And Water, Following Exercise In The Heat
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 17
- 试验地点
- 1
- 主要终点
- Net water Balance
研究概览
简要总结
It is well-established that exercise has many health benefits. During exercise in temperate/hot conditions, sweating is necessary to dissipate heat. This sweating typically results in dehydration, which may impair physical and mental performance. Therefore, following exercise, effective rehydration is important to restore an optimal hydration state and therefore physical and mental performance. If an individual only rehydrates with water, though, it is unlikely that they will fully rehydrate as plain water is not very well-retained by the body, due to its lack of carbohydrate and electrolytes. For this reason, sports/ hydration drinks are likely to aid in better rehydration, due to their carbohydrate and electrolyte content. This project aims to compare the rehydration effectiveness and glucose responses to two sports / hydration drinks and water (with different carbohydrate and electrolyte contents).
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
- None
入排标准
- 年龄范围
- 18 Years 至 50 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •- Training/performing > 1 hrs a week
排除标准
- •Pregnant, attempting to become pregnant, or breastfeeding.
- •Diabetic.
- •You have adverse events/reactions in response to fingertip capillary blood sampling which includes, but is not limited to; fainting and/or serious bruising.
- •History of heat-related illness.
- •History of heart failure, pulmonary hypertension, embolism, or other pulmonary heart disease.
- •Previously diagnosed with COPD, emphysema, bronchitis or similar respiratory illness.
- •Have a history of severe allergic reactions.
- •History of kidney issues.
- •Regular use of non-steroidal anti-inflammatory medications.
- •Any other medical conditions / medications that may interfere with an individuals ability to safely perform exercise in the heat and experience dehydration.
- •Allergies/intolerances to any of the following ingredients: Glucose Syrup, Acid (Citric Acid), Acidity Regulator (Sodium Citrate), Extract of Black Carrot, Watermelon, pomegranate, lime, Preservatives (Potassium Sorbate, Dimethyl Dicarbonate), Stabilisers (Acacia Gum), Sweeteners (Aspartame, Acesulfame K), Antioxidant (Ascorbic Acid), Flavourings, Niacin (Vitamin B3).
- •Elite athlete subject to doping tests
研究组 & 干预措施
Water
Consumption of a water volume (from water) equal to 150% of body mass loses from exercise-induced hypohydration
干预措施: Water (Other)
Glucose-based sports drink
Consumption of a water volume (from a glucose-based sports drink) equal to 150% of body mass loses from exercise-induced hypohydration
干预措施: Glucose-based sports drink (Other)
Fruit beverage
Consumption of a water volume (from a fruit beverage) equal to 150% of body mass loses from exercise-induced hypohydration
干预措施: Fruit beverage (Other)
结局指标
主要结局
Net water Balance
时间窗: Baseline (pre-exercise), post-exercise, and 0, 1, 2, 3, and 4 h post-rehydration
(\[post-exercise body mass (kg) - Pre-exercise body mass (kg)\] x 1000) + water volume consumed (g) - cumulative urine output during rehydration period (g)
Cumulative urine volume
时间窗: 0, 1, 2, 3, and 4 h post-rehydration
Total urine volume
时间窗: Sum of urine produced at 0, 1, 2, 3, and 4 h post-rehydration
Total urine volume produced during the rehydration period
Water retention
时间窗: 4 h post-rehydration
(\[water volume consumed (g) - total urine volume produced during the rehydration period (g)\] / water volume consumed (g)) x 100
次要结局
- Hyperglycaemia incidence(The 2 h period following rehydration)
- Blood glucose concentration(Baseline (pre-exercise), post-exercise, and 0, 0.25, 0.5, 0.75, 1, 1.5, and 2 h post-rehydration)
- Blood glucose area under the curve(The 2h period following rehydration)
- Hypoglycaemia incidence(The 2 h period following rehydration)
- Urine osmolality(Baseline (pre-exercise), post-exercise, and 0, 1, 2, 3, and 4 h post-rehydration)
- Body mass(Baseline (pre-exercise) and post-exercise (approximately 2 h post-baseline, depending on sweat losses during cycling in the heat))
- Thirst(Baseline (pre-exercise), towards the end of each 10 minute block of exercise (cycling in the heat), post-exercise, and 0, 1, 2, 3, and 4 h post-rehydration)
- Gastrointestinal comfort(Baseline (pre-exercise), post-exercise, and 0, 1, 2, 3, and 4 h post-rehydration)
- Rating of perceived exertion (RPE)(Measured towards the end of each 10 minute block of exercise (cycling in the heat). Up to 8 blocks lasting a total of 120 minutes (10 minutes of cycling, followed by 5 minutes of rest), depending on body mass loss.)
- Thermal sensation(Measured towards the end of each 10 minute block of exercise (cycling in the heat). Up to 8 blocks lasting a total of 120 minutes (10 minutes of cycling, followed by 5 minutes of rest), depending on body mass loss.)
- Time in environmental chamber(Up to 120 minutes, depending on body mass losses during cycling in the heat)
- Laboratory temperature(Baseline (pre-exercise), post-exercise, and 0, 1, 2, 3, and 4 h post-rehydration)
- Environmental chamber temperature(Measured towards the end of each 10 minute block of exercise (cycling in the heat). Up to 8 blocks lasting a total of 120 minutes (10 minutes of cycling, followed by 5 minutes of rest), depending on body mass loss.)
- Laboratory humidity(Baseline (pre-exercise), post-exercise, and 0, 1, 2, 3, and 4 h post-rehydration)
- Environmental chamber humidity(Measured towards the end of each 10 minute block of exercise (cycling in the heat). Up to 8 blocks lasting a total of 120 minutes (10 minutes of cycling, followed by 5 minutes of rest), depending on body mass loss.)
研究者
Loris Juett
Lead Research Scientist
Nottingham Trent University