- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03154216
Milk as a Recovery Beverage After Exercise for Improving Metabolic Health
The Effect of Milk as a Recovery Beverage After Exercise on Next-day Postprandial Triglycerides
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Cardiovascular disease is the leading cause of death in Canada with annual direct and indirect costs estimated at $22 billion. Fasting lipid levels are associated with elevated risk of cardiovascular disease; however, postprandial lipids - the level of TG after a meal, are very potent predictors of cardiovascular disease risk because most of an individual's day is spent in the postprandial state. This problem is especially evident in obese individuals, who have an elevated postprandial TG response. An acute session of exercise is beneficial for reducing postprandial TG; however, caloric consumption immediately after exercise can attenuate this beneficial effect.
Carbohydrate quality may influence postprandial lipid response. Carbohydrates can be classified by their glycemic index (GI), where high GI carbohydrates are rapidly digested and result in large elevations in blood glucose. Low GI carbohydrates are digested slowly and result in a smaller, more gradual rise in blood glucose. High GI carbohydrates are associated with an elevated risk of cardiovascular disease and increased weight gain; whereas low GI carbohydrates are associated with a reduced risk of cardiovascular disease and decreased weight gain. As mentioned above, one of the main benefits of an acute session of exercise is to reduce TG levels after a subsequent meal. For example, an evening exercise session reduces the blood TG response after a high-fat breakfast provided the next day. This effect is negated if high GI beverages (i.e. sugar-sweetened drinks) are consumed immediately after exercise. Sports drinks such as Gatorade, and skim milk or chocolate milk are the leading beverages promoted for consumption during recovery after exercise. Gatorade has a high GI (i.e. GI=89) due to the inclusion of high amounts of simple sugars, whereas milk has a low GI (i.e. GI=34). Milk may therefore be a healthier choice for consumption after exercise.
No study has determined the effects of consuming low GI milk after an exercise session on next-day postprandial TG. Considering that consuming beverages after exercise is common practice and can influence blood lipid profiles, investigation into effects of low GI milk versus high GI recovery beverages is required.
The aim of this proposal is to determine if replacing calories expended during an evening session of endurance exercise with low GI milk can improve postprandial TG after a meal the next morning. We propose to look at the effects of consuming skim milk compared to Gatorade after endurance exercise on the blood TG, other lipids, glucose levels, and blood pressure responses after a high-fat meal consumed the morning after the exercise.
Our objective is to determine the effect of consuming milk after an evening exercise session on blood triglyceride response to a high fat meal the next morning. This will be compared to: A condition where exercise is performed followed by consumption of a high glycemic index Gatorade beverage; a condition where only exercise is performed with no after-exercise caloric consumption; a condition where neither exercise nor beverage is consumed in the evening. After each of these conditions, a high fat breakfast will be consumed the following morning (about 10 hours after the end of the exercise session). Blood will be collected before the breakfast and for 6 hours after the breakfast to determine postprandial metabolic response.
Our secondary objectives are to determine the effect of each condition on postprandial insulin, high density lipoprotein, apolipoprotein B, total cholesterol, and free fatty acids, and muscle fat oxidation. Blood pressure will also be assessed immediately after the evening exercise session and beverage consumption and continue throughout the night and throughout the postprandial period the next day.
Our primary hypothesis is that consuming low glycemic index milk after the evening exercise session will be superior to consuming Gatorade for reducing postprandial triglycerides the next morning.
Our secondary hypotheses are that consuming low glycemic index milk after the evening exercise session will be superior to consuming Gatorade for improving other metabolic measures (i.e. increasing high density lipoproteins, plasma free fatty acids, and fat oxidation, and reducing apolipoprotein B, low density lipoproteins, total cholesterol, and blood pressure) during the postprandial period after a high-fat meal.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Saskatchewan (SK)
-
Saskatoon, Saskatchewan (SK), Canada, S7N5B2
- College of Kinesiology, University of Saskatchewan
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Body mass index of 25 or greater
- 18-44 years of age
Exclusion Criteria:
- diabetics
- smokers
- those taking medications for cholesterol or glucose
- those who are allergic to milk
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Exercise only
90 minutes of exercise
|
90 minutes of moderate-intensity walking exercise on a treadmill
|
Experimental: Exercise and high glycemic index drink
90 minutes of exercise followed by consumption of high-glycemic index Gatorade drink matched for calories expended during the exercise
|
90 minutes of moderate-intensity walking exercise on a treadmill
Beverage to be consumed after exercise
|
Experimental: Exercise and low glycemic index drink
90 minutes of exercise followed by consumption of low-glycemic index milk drink matched for calories expended during the exercise
|
90 minutes of moderate-intensity walking exercise on a treadmill
Beverage to be consumed after exercise
|
No Intervention: No exercise and no beverage
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in blood triglycerides
Time Frame: Change from baseline to 6 hours
|
Triglyceride levels after a high-fat breakfast
|
Change from baseline to 6 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in blood glucose
Time Frame: Change from baseline to 6 hours
|
Glucose levels after a high-fat breakfast
|
Change from baseline to 6 hours
|
Change in fat oxidation
Time Frame: Change from baseline to 6 hours
|
Fat oxidation after a high-fat breakfast
|
Change from baseline to 6 hours
|
Change in low density lipoproteins
Time Frame: Change from baseline to 6 hours
|
Low density lipoproteins after a high-fat breakfast
|
Change from baseline to 6 hours
|
Change in high density lipoproteins
Time Frame: Change from baseline to 6 hours
|
High density lipoproteins after a high fat breakfast
|
Change from baseline to 6 hours
|
Change in total cholesterol
Time Frame: Change from baseline to 6 hours
|
Total cholesterol after a high-fat breakfast
|
Change from baseline to 6 hours
|
Change in insulin level
Time Frame: Change from baseline to 6 hours
|
Insulin level after a high-fat breakfast
|
Change from baseline to 6 hours
|
Change in blood pressure
Time Frame: Change from baseline to 16 hours
|
Blood pressure after exercise and beverage consumption
|
Change from baseline to 16 hours
|
Collaborators and Investigators
Sponsor
Collaborators
Publications and helpful links
General Publications
- Kaviani M, Chilibeck PD, Yee P, Zello GA. The effect of consuming low- versus high-glycemic index meals after exercise on postprandial blood lipid response following a next-day high-fat meal. Nutr Diabetes. 2016 Jul 4;6(7):e216. doi: 10.1038/nutd.2016.26.
- Gao R, Rapin N, Elnajmi AM, Gordon J, Zello GA, Chilibeck PD. Skim milk as a recovery beverage after exercise is superior to a sports drink for reducing next-day postprandial blood glucose and increasing postprandial fat oxidation. Nutr Res. 2020 Oct;82:58-66. doi: 10.1016/j.nutres.2020.08.007. Epub 2020 Aug 19.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 16-300
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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