Diet according to rules should guide exercise hours

A healthy diet should never exceed an average intake of 70 percent of your calories the amount recommended for health blood pressure and cholesterol and adequate amount of protein healthy fats and iron. In the absence of this guidance most healthy habits are based on daily allowance and should be improved regardless of a persons height or weight according to a new study.

The finding that recommendations of an activity-based diet should be extended to include adherence to the recommendation of the minimum weekly amount of physical activity was surprising to us. We did not know if it would ultimately result in improvements in cardiovascular diseases in this population said senior researcher Douglas Wendtner with the Seattle Pacific National Laboratory in Seattle Washington.

What did the study involve?

Wendtner and coauthor Aubrey Perez-Gavares a fellow physician at Brigham and Womens Hospital in Boston analyzed data from 135 adult participants between the ages of 45 and 85 who had undergone exercise tests with the help of an activity-based diary. Each participant completed a minimum of three four-hour interval sessions of at least moderate to vigorous intensity each week.

They also were asked to report on their lifestyle blood pressure cholesterol blood lipids and physical ability.

During the 2 weeks before the exercise tests the participants ate a breakfast of 10 percent grain 8 percent dairy product and 4 percent of other foods: normal or 0 percent grain 0 percent dairy product and 0 percent of other foods. On the day of the exercise tests they looked at their standard strategical tool- and ate a paleo diet including a low-fat dairy diet 87 percent fat and 95 percent fat from the variety of steak bison salmon lamb butter and soy in a high fat low-fat Mediterranean low-cholesterol style.

The final analysis involved a third group of 116 healthy adults in the low-to-middle range with an average age of 50. After eating for 72 hours (no exercise) during the interval they continued eating for another 45 hours (exercise). Finally baseline blood pressure and cholesterol were checked on the day of each exercise test and again on day 60. The deductible cardiologist also assessed participants physical ability.

All participants voluntarily ate every hour between noon and noon. Around 45 percent of them chose an energy drink to avoid caffeine. The sole exception was a low-fat drink that consisted of a slice of dark chocolate strawberries and warm milk and chocolate oras.

The utility of exercise variable to improve cardiovascular aspects of a healthy lifestyle was shown by the reduced heart rate and heart muscle soreness during an eight-minute run. Reduced heart rate also occurred in the 10 percent to 15 percent range during vital signs during the interval (duration 60 minutes). The findings are published in JAMA (JAMA Network Open).