When it comes to losing weight spending hours exercising may not be the most effective option. Mads Rosenkilde and colleagues at the University of Copenhagen (Denmark) conducted a randomized controlled study on 60 sedentary and moderately overweight young men to examine the effects of increasing doses of aerobic exercise on weight loss. Half of the men were assigned to exercise for an hour a day, while the second half only had to exercise for 30 minutes. Results showed that, on average, the men who exercised 30 minutes a day lost 3.6 kg in 3 months, while those who exercised for a whole hour only lost 2.7 kg. The reduction in body mass was about 4 kg for both groups. Furthermore, participants who exercised for just 30 minutes burned more calories than expected. “Exercising for a whole hour instead of a half does not provide any additional loss in either body weight or fat,” concluded PhD student Rosenkilde.
Rosenkilde M, Auerbach PL, Reichkendler MH, Ploug T, Stallknecht BM, Sjödin A. Body fat loss and compensatory mechanisms in response to different doses of aerobic exercise - a randomized controlled trial in overweight sedentary males. Am J Physiol Regul Integr Comp Physiol. 2012 Aug 1.
Metabolic abnormalities such as obesity and high blood pressure may accelerate cognitive decline, say researchers.
Anthocyanins, antioxidant pigments found in fruit and vegetables, have been found to improve the blood lipid profile of people with high cholesterol.
New research suggests that exercising for just 30 minutes is as effective for weight loss as a whole hour.
Spouses of people who have a sudden heart attack are at increased risk of depression, anxiety, and suicide, even if their partner survives.
Regular consumption of olive oil may help to reduce cardiovascular risk by improving the function of cells that line the blood vessels.
Exposure to a compound produced when food is cooked with dry heat has been linked to the development of abdoinal obesity, and type 2 diabetes in mice.
Drinking three cups of green tea each day shown to help elderly people with metabolic syndrome lose weight and trim their waistline.
A commercially available acai berry product has been found to significantly lengthen the lifespan of fruit flies.
Study results suggest that daily vitamin D supplementation can reduce the risk of aqcuiring respiratory infections in winter.
People with severe coronary artery disease have been found to have higher-than-normal levels of the plastic bisphenol-A (BPA) in their urine.
Middle-aged adults who regularly engage in leisure-time physical activity for more than a decade may enhance their heart health.
More than six in 10 Americans walk for transportation or for fun, relaxation, or exercise.
A program integrating balance activities into everyday routines boosts functional capacity and independent living.
Men who complete weight training for at least 150 minutes per week are at 34% lower risk of developing type-2 diabetes.
Exercise appears to be effective in reducing beta-amyloid formation, a defining characteristic of Alzheimer's Disease, in a lab animal model.
Physical activity – either mild or intense and before or after menopause – may reduce breast cancer risk, but substantial weight gain may negate these benefits.
Young men who play volleyball, basketball or other load-bearing sports for four hours a week or more increase their bone mass.
Americans spend, on average, only about two hours each week participating in sports and fitness activities.
A daily glass of tomato juice helps to reduce markers of oxidative stress, particularly after exercise.
Regular jogging increases the life expectancy of men by 6.2 years and women by 5.6 years.
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46. Hormone Health: DHEA
Dehydroepiandrosterone (DHEA) is the most abundant hormone in the human body. It is involved in the manufacture of testosterone, estrogen, progesterone, and corticosterone. The decline of DHEA with age parallels that of HGH (see Tip 43), so by the age of 65, our bodies make only 10 to 20% of what they did at age 20.
DHEA supplementation has been shown in various clinical studies to enhance the immune response against infection. It also has been reported to be valuable against cancer, coronary artery disease, and osteoporosis. DHEA also increases muscle mass and reduces fat mass...