Breaking up workouts may burn fat faster

YAHOO!HEALTH
Reuters

Breaking up an exercise session, by adding a rest period in between, may boost a workout's fat-burning efficiency, a team of Japanese and Danish researchers reports.

When men exercised for two 30-minute stretches, taking a 20-minute rest break in between, they burned more fat than when they exercised for a single 60-minute session, and then rested afterward, Dr. Kazushige Goto of the University of Tokyo and colleagues found.

Current recommendations on exercise for preventing or treating obesity emphasize longer exercise sessions, Goto and his team note in the Journal of Applied Physiology. But there is evidence that following one exercise session with another workout may increase fat metabolism, they add.

To investigate, the researchers had seven healthy men complete one long workout and then two shorter workouts on exercise bicycles, measuring several different indicators of fat metabolism. All exercised at 60 percent of their maximum level of exertion.

When the men performed the two shorter exercise sessions, their blood levels of free fatty acids and other substances rose during the rest period, indicating greater fat metabolism. Levels of these substances also were higher during an hour-long rest period after the two-part exercise session.

Greater fat metabolism was recorded during each of the rest periods in the two-part session than during the rest period following the single, longer workout.

The men also showed lower levels of insulin and blood glucose during the second phase of the two-part exercise session.

While the proportion of total calories burned did not differ between the two workouts, fat represented nearly 77 percent of the calories burned in the recovery period after the two-part exercise session, compared with about 56 percent of calories burned in the recovery period after the single long exercise session.

Although a single bout of prolonged exercise is often performed in response to a physician's advice to exercise more, exercising for the same amount of time but with rest periods in between may be more effective, especially for sedentary or overweight individuals, the researchers conclude.

SOURCE: Journal of Applied Physiology, June 2007.

Psalm 23

Because
The Lord is my Shepherd
My Father-figure, my guide,
I shall not want.
I shall not lack anything – for the Lord will provide all I need.
He maketh me to lie down in green pastures,
He gives sweet rest and comfort in Him.
He leadeth me beside the still waters.
He calms my heart with the refreshing water of His Word.
He restoreth my soul.
Where I have been broken – He healed, and heals.
Where I had lost touch with Him, He brought me back.
He leadeth me in the paths of righteousness
He keeps me from sin and leads me in the way I should go,
as a father does for His son, and as a Shepherd guides His sheep.
For His name’s sake.
So that I cannot take any pride in my own righteousness, but that in all I do,
My Shepherd would receive all glory.
Yea, though I walk through the valley
The dark, lonesome valley
Of the Shadow of Death
Though death threatens my very being,
I will fear no evil, for Thou art with me.
Because my Shepherd leads, I have no reason to fear for my life.
Thy rod and thy staff, they comfort me.
As I learn discipline from my Shepherd, I am comforted and assured of His love.
Thou preparest a table before me
Always giving and delighting the sheep You care for,
In the presence of mine enemies
So that they will acknowledge the greatness and majesty of You, my Shepherd.
My cup runneth over.
You never cease to lavish your abundant grace upon me.
Surely goodness and mercy shall follow me
On this weary path, Your kindness and gentle patience encompass me wherever I may be
All the days of my life
The good days, and the bad days
And I will dwell in the house of the Lord
In the Good Shepherd’s green pastures
Forever.

Amen.
May it be.