It's the first time I've heard of it, but I often do my morning workout in a fasted state. I just get up, drink a glass of water and hit the road or the pool, though I don't necessarily forego carbs at dinner.
Below are some comments from the article/study. 3 week study with 21 people is a very small sample/time frame... I saw no mention of total calories.....
"After three weeks, the athletes in the sleep-low group were grumbling about evening hunger. The sleep-low volunteers also had lost body fat, while the other athletes had not.Their times on the 10-kilometer running leg at the end of the race were faster by about 75 seconds, or 3 percent, than at the start of the study. "
My thoughts on when I read the above - they were hungry , therefore calorie restricted , they lost weight because they were calorie restricted, they were faster because they lost weight. Although I think a 75 second improvement over a 10k for already trained athetes is a very suspect 3 week improvement.
Further to Tim's point, IMO a study with so few subjects is not very convincing, particularly with the differences between the groups being so small. There are plenty of large scale, well regarded studies that show carbohydrates are the fuel that endurance athletes need to power their training and help the body repair after wkos. The above study appears to be suggesting something different. I would be happy to give references to such studies if there is any interest.
I do 100% of my morning workouts (which is 95% of all of my workouts) fasted. This means easy or intense workouts. I would expect that the improvement in speed was purely from lower weight and not from better fitness.
Lots of other lengthy discussions in da haus about becoming Fat adapted.
Lots of different things work for lots of different people. I don't have the "life capacity" to workout at night, so unlikely I'll be the EN beta tester on this one...
The biggest problem I see with this study is to make a low carb diet work for an athlete they have to be low carb long term. If you feed your body carbs in the morning and at lunch it's going to be looking for that easy energy in the evening and if you don't provide that easy energy it will have to switch back to fat adapted. If you're going to go low carb you have to be ALL IN. Tim is high carb and it works for him. John and I are low carb and it works for us. But we know that we cannot do high carbs part of the day and low carbs the rest of the day.
Comments
It's the first time I've heard of it, but I often do my morning workout in a fasted state. I just get up, drink a glass of water and hit the road or the pool, though I don't necessarily forego carbs at dinner.
Below are some comments from the article/study. 3 week study with 21 people is a very small sample/time frame... I saw no mention of total calories.....
"After three weeks, the athletes in the sleep-low group were grumbling about evening hunger. The sleep-low volunteers also had lost body fat, while the other athletes had not.Their times on the 10-kilometer running leg at the end of the race were faster by about 75 seconds, or 3 percent, than at the start of the study. "
My thoughts on when I read the above - they were hungry , therefore calorie restricted , they lost weight because they were calorie restricted, they were faster because they lost weight. Although I think a 75 second improvement over a 10k for already trained athetes is a very suspect 3 week improvement.
There are plenty of large scale, well regarded studies that show carbohydrates are the fuel that endurance athletes need to power their training and help the body repair after wkos. The above study appears to be suggesting something different. I would be happy to give references to such studies if there is any interest.
Lots of other lengthy discussions in da haus about becoming Fat adapted.
Lots of different things work for lots of different people. I don't have the "life capacity" to workout at night, so unlikely I'll be the EN beta tester on this one...