Type2 Diabetes Mellitus
Conditions
Brief summary
The aim of this study was to verify the effect of a combined supplementation \[n-3 PUFA (known to induce anti-inflammatory effects) plus vitamin E (known for its antioxidant properties)\] on lipidic, glycemic, redox status and inflammatory parameters in type 2 diabetic patients. In addition, considering that exercise, at high intensities, can induce a transient inflammatory state and increase oxidative stress (OS) markers, the investigators tested if our nutritional intervention could attenuate this response within this population (thus, using high intensity exercise as inductor of acute inflammatory/OS state).
Detailed description
Herein the investigators tested the effect of eight weeks of omega-3 polyunsaturated fatty acid (n-3 PUFA) and vitamin E supplementation before and after an acute high intensity exercise bout on lipid profile, glycemic, redox and inflammatory parameters in type 2 diabetic (T2DM) patients. Thirty T2DM patients, without chronic complications, took part in this study. Blood and urine samples were collected after 12 h-fasting state for baseline biochemical analysis. Thereafter, subjects performed an incremental workload VO2max test on a cycle ergometer to determine the load of the high intensity submaximal exercise. On the following week, blood samples were collected before and immediately after the exercise test for measurements of oxidative stress (OS) and high-sensitivity C-reactive protein (hs-CRP). Afterwards, participants were randomly allocated into two groups: placebo (gelatin) and n-3 PUFA (capsules containing 180 mg of eicosapentaenoic acid, 120 mg of docosahexaenoic acid and 2 mg of vitamin E). Three capsules were ingested daily for eight weeks. Then, the examination protocol and the exercise test were repeated and the samples collected.
Interventions
DIETARY_SUPPLEMENTn-3 PUFA Group
Participants received n-3 PUFA capsules (capsules containing 180 mg of eicosapentaenoic acid, 120 mg of docosahexaenoic acid and 2 mg of vitamin E). Three capsules were ingested daily for eight weeks, distributed between breakfast, lunch and dinner.
DIETARY_SUPPLEMENTPlacebo Group
Participants received capsules containing 500 mg of gelatin.Three capsules were ingested daily for eight weeks, distributed between breakfast, lunch and dinner.
Sponsors
Federal University of Rio Grande do Sul
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
SINGLE (Subject)
Intervention model description
The selected subjects were referred to the University laboratory. During their first visit, the subjects were submitted to perform the first high intensity sub-maximal test. In the same day, volunteers received the supplementation capsules that should be taken throughout eight weeks, as described in the supplementation section. The subjects were randomly assigned to two groups: (1) group placebo and (2) n-3 PUFA group. After the supplementation period, all subjects reported back to hospital to biochemical testing and thereafter to the university exercise laboratory for the second high intensity sub-maximal test, following the same protocol described above.
Eligibility
Sex/Gender
ALL
Age
40 Years to 60 Years
Healthy volunteers
No
Inclusion criteria
* Clinical diagnosis of Type 2 Diabetes * Male and female * Age between 40 and 60 years old. * Must be able to do exercise
Exclusion criteria
* Smoking; * Clinical diagnosis of kidney, pulmonary or heart diseases
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes on hs-CRP (High-sensitivity C reactive protein) | Measured before the supplementation (baseline) and after eight weeks of supplementation | Marker of inflammation expressed in mg/dL |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Changes on F2-isoprostanes | Measured before the supplementation (baseline) and after eight weeks of supplementation | Marker of oxidative stress expressed in ng/mL |
| Changes on thiobarbituric acid reactivity | Measured before the supplementation (baseline) and after eight weeks of supplementation | Marker of oxidative stress expressed in nmol/mL |
| Changes on Total Antioxidant activity | Measured before the supplementation (baseline) and after eight weeks of supplementation | Marker of oxidative stress expressed in contains per minute |
Countries
Brazil
Outcome results
None listed