AI Article Synopsis

  • This study investigated how combining exercise with either a low or high glycemic index diet affects metabolic syndrome in older adults.
  • Over 12 weeks, participants engaged in regular exercise while following one of the two diets, resulting in similar reductions in body weight, insulin resistance, and metabolic syndrome severity for both diet groups.
  • The findings suggest that exercise and weight loss can effectively improve metabolic syndrome risk, regardless of whether individuals adopt a low or high glycemic index diet.

Article Abstract

Background: The efficacy of combining carbohydrate quality with exercise on metabolic syndrome risk is unclear. Thus, we determined the effects of exercise training with a low (LoGIx)- or high (HiGIx)-glycemic index diet on the severity of the metabolic syndrome (Z-score).

Methods: Twenty-one adults (66.2±1.1 years; BMI=35.3±0.9 kg/m2) with the metabolic syndrome were randomized to 12 weeks of exercise (60 min/day for 5 days/week at about 85% HRmax) and provided a LoGIx (n=11) or HiGIx (n=10) diet. Z-scores were determined from: blood pressure, triglycerides (TGs), high-density lipoproteins (HDLs), fasting plasma glucose (FPG), and waist circumference (WC) before and after the intervention. Body composition, aerobic fitness, insulin resistance, and nonesterfied fatty acid (NEFA) suppression were also assessed.

Results: LoGIx and HiGIx diets decreased body mass and insulin resistance and increased aerobic fitness comparably (p<0.05). LoGIx and HiGIx diets decreased the Z-score similarly as each intervention decreased blood pressure, TGs, FPG and WC (p<0.05). The HiGIx diet tended to suppress NEFA during insulin stimulation compared with the LoGIx diet (p=0.06).

Conclusions: Our findings highlight that exercise with weight loss reduces the severity of the metabolic syndrome whether individuals were randomized to a HiGIx or a LoGIx diet.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3586384PMC
http://dx.doi.org/10.1159/000342084DOI Listing

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