Investigating the Effects of Beta-Hydroxy-Beta-Methylbutyrate on Glucose Handling in Older and Younger Men.
- Conditions
- Insulin ResistanceAge Problems
- Interventions
- Dietary Supplement: Beta-Hydroxy-Beta-MethylbutyrateOther: Placebo
- Registration Number
- NCT03018496
- Lead Sponsor
- University of Nottingham
- Brief Summary
This study intends to examine the effect of a commercially available nutritional supplement, Beta-hydroxy-beta-methylbutyrate(HMB) on whole-body responses to a sugar load.
- Detailed Description
One change associated with human aging is a reduction in "fitness", both in terms of how far or quickly a person can run/cycle/swim and also in how well their blood vessels work. Additionally a person's metabolic fitness decreases; this is how well the body copes with nutrition and is why, for example, older people have a higher risk of diseases like type 2 diabetes. Previous studies have shown that as people become less fit, they are at increased risk of suffering a complication whilst undergoing surgery. It has also been shown that measuring how fit someone is, is better at predicting the risk of a surgical complication than purely using a person's age alone. Lots of research has shown that exercise can potentially reverse some of the age-related declines in fitness, however most has used long sessions of continuous exercise over a long period of time. High-intensity interval training (HIT), whereby people cycle on an exercise bike very hard for a minute, followed by a short rest, repeated over the course of 15 minutes can rapidly improve a person's fitness. However not everyone will be able to, or indeed want to participate in exercise this strenuous; therefore this research seeks to explore whether other options, such as dietary supplements can improve aspects of fitness
This study intends to examine the effect of giving a dietary supplement on the way a person's body handles the glucose (from carbohydrates/ sugars) in a meal. Previous work has shown that taking a beta-hydroxy beta-methyl butyrate (HMB) supplement may improve may improve a patient's response to glucose, however the evidence is not clear. HMB is a commercially available nutritional supplement providing a compound that the body produces each time protein is consumed, and is most commonly used by bodybuilders to help gain muscle.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- Male
- Target Recruitment
- 20
- Healthy volunteers
- Aged 18-35 or 65-85
- Male
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Current participation in a formal exercise regime
-
A BMI < 18 or > 32 kg·m2
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Active cardiovascular disease:
o uncontrolled hypertension (BP > 160/100), angina, heart failure (class III/IV), Significant arrhythmia, right to left cardiac shunt, recent cardiac event
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Taking beta-adrenergic blocking agents,
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Cerebrovascular disease:
o previous stroke, aneurysm (large vessel or intracranial), epilepsy
-
Respiratory disease including:
o pulmonary hypertension, significant COPD, uncontrolled asthma,
-
Metabolic disease:
o hyper and hypo parathyroidism, untreated hyper and hypothyroidism, Cushing's disease, type 1 or 2 diabetes
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Active inflammatory bowel or renal disease
-
Malignancy
-
Clotting dysfunction
-
Significant musculoskeletal or neurological disorders
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Family history of early (<55y) death from cardiovascular disease
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Arm && Interventions
Group Intervention Description Younger Men Beta-Hydroxy-Beta-Methylbutyrate Healthy male adults aged 65-85 Subjects will receive both HMB and placebo on separate visits in a crossover fashion Older Men Beta-Hydroxy-Beta-Methylbutyrate Healthy male adults aged 18-35 Subjects will receive both HMB and placebo on separate visits in a crossover fashion Older Men Placebo Healthy male adults aged 18-35 Subjects will receive both HMB and placebo on separate visits in a crossover fashion Younger Men Placebo Healthy male adults aged 65-85 Subjects will receive both HMB and placebo on separate visits in a crossover fashion
- Primary Outcome Measures
Name Time Method Matsuda Index of insulin sensitivity 180 minutes after a 75g oral glucose load Assessed from arterialised venous blood samples
Cederholm index of insulin sensitivity 180 minutes after a 75g oral glucose load Assessed from arterialised venous blood samples
- Secondary Outcome Measures
Name Time Method Area-Under-Curve Insulin Concentration 180 minutes after a 75g oral glucose load Assessed from arterialised venous blood samples
Area-Under-Curve Glucose Concentration 180 minutes after a 75g oral glucose load Assessed from arterialised venous blood samples
Femoral Artery Blood flow 15 minutes, 60 minutes and 120 minutes after a 75g oral glucose load Assessed using duplex ultrasonography of the superficial femoral artery of the right leg
Trial Locations
- Locations (1)
University Of Nottingham
🇬🇧Derby, United Kingdom