Translation of "Sustaining" in Japanese

I had a sustaining breakfast.

栄養のある朝食をとった。

- I had a sustaining breakfast.
- I ate a nutritious breakfast.
- I had a healthy breakfast.

栄養のある朝食をとった。

Especially over the last 20 years, the purported link between progressive welfare policies and economic failure in the Northern European countries seems to point to the difficulty of sustaining both full social welfare and international competitivity.

特に約２０年前から、高福祉政策が経済的破綻につながったとされる北欧諸国が示すように、福祉の充実と国際競争力維持の両立は困難なものであると言える。