None listed
Conditions
Brief summary
The metabolic syndrome (MS) is a term used to describe the clustering of metabolic risk factors, such as abdominal obesity, insulin resistance, dyslipidaemia and elevated blood pressure. It is estimated that 20-25% of the world’s adult population have the metabolic syndrome. Having the risk factors associated with the MS leads to an increased risk of developing cardiovascular disease (CVD) and such individuals are also five times more likely to develop Type 2 diabetes. The root causes of the MS are described as being a combination of being overweight or obese, physical inactivity and genetic factors. Cardiovascular disease is a major cause of death in Australia and most industrialized countries. Atherosclerosis is the main cause of CVD. The initiation of atherosclerosis is the accumulation of lipid deposited by circulating lipoproteins within the arterial wall. Postprandial lipaemia (after meal blood lipid appearance) induced by eating a fatty meal increases circulating levels of lipid. Increased postprandial lipid levels have the potential to deposit into the arterial wall and develop into an atherosclerotic lesion. However, exercise decreases postprandial lipaemia as an acute (short-term) effect after a single bout. The aim of this study was to investigate whether a single 30-minute bout of resistance, aerobic or combined exercise at moderate intensity would decrease postprandial lipaemia, glucose and insulin levels of a high fat meal consumed 14 hours after the exercise bout, as well as increase resting energy expenditure and increase fat oxidation in overweight and obese individuals compared to no exercise. We also compared the effects of the different exercise modalities.
Interventions
The study was a randomized cross-over design examining the postprandial effects of different types of exercise in the evening prior to a breakfast meal. Subjects were randomized on four occasions, each one-week apart, to each intervention, either no exercise (control), 30 minutes of aerobic exercise on a treadmill, 30 minutes of resistance exercise (leg press, leg curl, leg extension, bench press, rear deltoid row) or a combination of 15 minutes of aerobic exercise and 15 minutes of resistance e
The study was a randomized cross-over design examining the postprandial effects of different types of exercise in the evening prior to a breakfast meal. Subjects were randomized on four occasions, each one-week apart, to each intervention, either no exercise (control), 30 minutes of aerobic exercise on a treadmill, 30 minutes of resistance exercise (leg press, leg curl, leg extension, bench press, rear deltoid row) or a combination of 15 minutes of aerobic exercise and 15 minutes of resistance exercise. A postprandial response was measured following the breakfast meal.
Sponsors
Curtin University of Technology
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Open (masking not used)
Eligibility
Sex/Gender
All
Age
50 Years to 67 Years
Healthy volunteers
No
Inclusion criteria
Overweight or moderately obese postmenopausal women and men who were sedentary.
Exclusion criteria
Diabetes mellitus, pre-existing heart conditions, pregnant or lactating, smokers, gastrointestinal tract surgery, any other major illness.
Outcome results
None listed